NUCLEAR POWER PLANT MOCHOVCE
COMPLETION OF UNIT 3 AND 4
General technical requirements on special
fittings for NPP
Úvodní údaje/INTRODUCTORY DATA
A
REVIZNÍ LIST/REVISION SHEET
Datum
/ Date
Rev.
Kapitola
/ Chapter
Popis změny
/ Change description
01
10.12.2009
First edition
02
6.4.2010
Second edition
Document Number:
Rev.: 01
Ver.: 01
ID:
MO34-KPR-8-M-04798
Page: 2/134
VALVES FOR EQUIPMENT AND PIPELINES
OF NUCLEAR POWER PLANTS
GENERAL TECHNICAL CONDITIONS
VTP (OTT) 87A
WITH CHANGES from November 9, 1991
Table of contents
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
General data.................................................................................................... 7
Classification.................................................................................................. 8
Characteristics of products ............................................................................. 9
Requirements for material and semi-finished goods.................................... 16
Requirements for welded connections ......................................................... 17
The requirements for manufacture ............................................................... 18
Requirements for resistance against external effects ................................... 20
Requirements for reliability ......................................................................... 25
Completeness ............................................................................................... 27
Marking, preservation and packing.............................................................. 29
Acceptance rules .......................................................................................... 31
Requirements for inspection of materials and products ............................... 33
Instructions for transport and storage........................................................... 43
Instructions for operation ............................................................................. 44
Safety requirements...................................................................................... 45
Guarantees .................................................................................................... 46
Appendixes
Appendix No.1: Operating substances of nuclear power plants with reactors…….................47
Appendix No.2: Changes of operating substance parameters………………………………..56
Appendix No.3: Basic technical parameters and characteristics …………………………….61
Appendix No.4: Values of loading from piping……………………………………………...64
Appendix No.5: Tables of modification of welding of the ends of piping ……………...….75
Appendix No.6: Passport for fitting ………………………………………………………...84
Appendix No.7: Construction dimensions of fittings ……………………………………….87
Appendix No.8: Materials …………………………………………………………………..91
Appendix No.9: Special requirements for drives and electric parts of fittings ……………..96
Appendix No.10.: Electric wiring diagram……………………………………………… 118
Appendix No. 11 Allowed materials for valves basic details utilization…………. ……. 130
Appendix No. 12 Materials used for facing by welding of sealing and leading surfaces in the
valves………………………………………………………………… 132
-4-
Preamble
The Technical condition “General Requirements on special Valves for NPP” is issued in the
same status as per original text coming from updated version in 1991.
The applicability of this technical condition, mainly Appendix No.9 and No.10, have to be
verified and harmonized with the requirements of the Revision of Basic Design approved by
UJD NR, supporting work packages and with the requirements of Contract Technical
Specification valid for each individual Contractors involved in the completion of unit 3 & 4
of Mochovce NPP.
However, the Revision of Basic Design, the supporting work packages and Contract
Technical Specification have highest priority compared to this technical condition.
The Contractor which intent to use this technical condition as a input for the detailed design
development, manufacturing, test, erection and commissioning must clearly identify in the
relevant documentation the paragraphs and parts which are applicable for their purposes.
The Contractor is also responsible to verify that the input data here enclosed are not in
conflicts with the requirements of the Revision of Basic Design, supporting work packages
and Technical specification.
Whenever the Technical condition requirements are not applicable for specific topics the
Contractor is responsible to clearly state in the relevant design documentation (CEQP 1st
stage and Purchase Technical Specification for equipment/components/systems) the relevant
desing parameters or refer to valid and approved documentation coming from Revision of
Basic Design, supporting work packages or approved documentation developed in the frame
of Detailed Design.
•
Usability of PNM34088381 in the Purchase Technical Specifications
The purchase specification shall contains explicitly which parts of this technical condition is
applicable. Additional or new requirements not foreseen in this technical conditions shall be
included coming from Revision of Basic Design and valid documentation within MO34
completion
•
Usability of PNM34088381 in the Classified Equipment Quality Plan
The Classified Equipment Quality Plan shall contains explicitly which parts of this technical
condition is applicable. Additional or new requirements not foreseen in this technical
conditions shall be included coming from Revision of Basic Design and valid documentation
within MO34 completion
-5-
Introduction
These “General Technical Conditions” x) are related to the valvesxx) of nominal inner
diameter of DN 10 – 1600 for working overpressure ranging from 0.004 MPa (0.04 atp) to 20
MPA (200 atp) and for temperature of working medium up to 300°C intended for nuclear
power plants and reactors of the VVER type and channel uranium-graphite reactors
(including RBMK) that are installed on the equipment and pipelines, which the “Rules for
Construction and Safe Operation of Equipment and Pipelines of Nuclear Power Plants” are
related to and also the valves of the aforementioned equipment, which the requirements of
“NPP Rules” are related to, which must be stated in the order for development.
VTP-87 are binding for all ministries, offices, organizations and enterprises that
design, manufacture or operate the valves for nuclear facilities (AES, ATEC, AST, ASPT)
and reactors of the aforementioned types.
VTP-87 were prepared on the basis of the following normative-technical documents:
“Rules for Construction and Safe Operation of the Equipment”xxx) and pipelines of the
nuclear power plants PN AE G-7-008-89”;
“AES Equipment and pipelines, Welds and weld deposits, Basic provisions PN AE G7-009-89” (OP)
“AES Equipment and pipelines, Welds and weld deposits, Inspection Rules, PN AE
G-7-010-89” (PK)
“Standards for calculation of AES equipment and pipelines strength, PN AE-7-00286” (NRP)
“Basic provisions for assurance of nuclear facilities safety (OPB-88) PN AE G-1-01189”
“Special conditions for delivery of equipment, instruments, materials and products for
nuclear power facilities” Moscow, 1987.
“Steel castings for AES, Rules for Inspection PN AE G-7-025-90xxxx)
“Standards for designing seismic resistant AES, PN AE G-5-006-87”
x)
In the text bellow, these General Technical conditions are identified as VTP-87.
The valve here and also in the text bellow means the valve including the drive (manual, electrical etc.) and
other accessories.
xxx)
In the text bellow:
- „Rules for Construction …“ are identified as „AES Rules“.
- „AES equipment and pipelines, Welds and weld deposits, Basic provisions.“ are identified as OP.
- „AES Equipment and pipelines, Welds and weld deposits, Basic provisions." are identified as PK
- „Standards for strength calculations …" Are identified as NRP.
- „Basic provisions for safety assurance …“ are identified as OPB.
- „Special conditions for deliveries of equipment, instruments.“ are identified as „Special conditions“.
xxxx)
It will enter into force on April 1, 1992
xx)
-6-
1. GENERAL DATA
1.1 The Valve designed according to these VTP-87 must meet the requirements of
“AES Rules”.
1.2 Technical conditions (hereinafter referred to as “TC” are prepared for the
particular type of valve, whose technical requirements must correspond to all
requirements specified in these VTP-87 for the particular type of valve. This is
confirmed by a record in TC. It is allowed that instead of repeating the
requirements from VTP-87, references to corresponding items of VTP-87 would
be stated.
TC can be completed with the data approved by both the customer and the
supplier.
If the additional data are in contradiction, partially or fully, with the requirements
of arbitrary items of VTP-87, TC must also be approved by Gosatomenergonadzor
of RF.
1.3 TC must state an example of identification of the valve for the order.
-7-
2. CLASSIFICATION
Table 1
1A
Design overpressure
MPa (kp/cm2)
up to 20 (200)
2 BIIa
higher than 5 (51)
2 BIIb
up to 5 (51)
2 BIIIa
higher than 5 (51)
2 BIIIb
higher than 1.7 (17.3)
up to 5 (51)
up to 1.7 (17.3) and lower
than atmospheric pressure
(vacuum)
higher than 5 (51)
higher than 1.7 (17.3)
up to 5 (51)
up to 1.7 (17.3) and lower
than atmospheric pressure
(vacuum)
2 BIIIc
3 CIIIa
3 CIIIb
3 CIIIc
Determination and conditions of operation
The valve that is related to Safety Class 1 according to
OPB-88 (Group A according to AES Rules)
The valve that is related to Safety Class 2 according to
OPB-88 (Group B according to “AES Rules”) working
permanently or periodically in the contact with heat
carrier with radioactivity higher or equal to 10-15Ci/1
or working with heat conductor with radioactivity
smaller than 10-15Ci/1, but inaccessible for operators
during operation
The valve that is related to Safety Class 2 according to
OPB-88 (Group B according to “AES Rules”) working
with heat conductor with radioactivity smaller than 1015
Ci/1, accessible for operators during operation
The valve related to Safety Class 3 according to OPB88 (Group C according to “AES Rules”)
Note: 1 The valve inaccessible for operators during operation means the valve, which the
access is not related to when the reactor is working.
2. Identification of the system in accordance with OPB-88 and “AES Rules” is issued by the
general designer of NPP and reactor building in the order, and it is stated in TC and technical
and operation data card of the valve. Both the class and group of valve are also given on
drawings.
-8-
3. CHARACTERISTICS OF PRODUCTS
3.1 The valves are manufactured and delivered for parameters of the medium given in
Tables 2 and 3.
Table 2
Bellows valves
Parameter
Design (max.
working) overpressure
Design temperature
Unit
MPa
2.5
4.0
8.6
°C
250
250
300
Values of parameter
11.0
14.0
300
335
18.0
20.0
350
300
Table 3
Slide valves, check and control valves
Parameter
Design (max.
working) overpressure
Design temperature
Unit
MPa
1.6
2.5
4.0
Values of parameter
12.0
8.6
11.0
14.0
18.0
20.0
°C
200
250
250
250
335
350
300
300
300
Notes: 1. The parameters for the other types of valves are stated in TC.
2. All newly developed valves must correspond to the stated series.
3.2 This point has been cancelled.
3.3 The basic technical data and characteristics of valves must be stated in TC for each
product in the form of the table according to Annex 3. The parameters of the valve (pressure,
temperature), material of the body, type of control, dimension of connecting pipeline,
assembly site (under the containment our outside the containment) with transmitter of remote
control or without it.
3.4 The valves are intended for operation with one or several working media listed in Annex
1.
The particular working medium, which the valves were designed for, is stated in TC in the
table according to Annex 3.
When placing the request for development of a new valve, the customer shall specify
particular working media.
-9-
3.5 The flow part of the valve must not have greater loss coefficients than:
ξ ≤ 1.0
ξ ≤ 1.5
ξ ≤ 1.5
ξ ≤ 3.0
ξ ≤ 3.0
ξ ≤ 6.0
ξ ≤ 5.5
ξ ≤ 7.5
ξ ≤ 7.0
ξ ≤ 9.0
ξ ≤ 60
ξ ≤ 110
in slide valves
in slide valves
in quickly-acting valves
in hermetic valves
in check valves
in check valves
in bellows valves
in bellows valves
in bellows valves
in bellows valves
in KIP valves
in KIP valves
DN > 200
DN < 200
DN > 150
DN > 50
DN > 50
at flow rate
DN > 50
under valve cone
DN < 50
at flow rate
DN< 50
above valve cone
DN > 50
at flow rate under the valve cone
at flow rate above the valve cone
Note:
The loss coefficient for the particular valve is specified on the basis of prototype tests, is
approved by the customer and state in TC.
3.6. The assembly position of the closing and quick-acting valves on the pipeline DN < 50 is
arbitrary, on DN > 50 is arbitrary in the upper hemisphere against the guide horizontal plane;
the recommended position is vertical.
3.7 All closing valves must be designed for the full pressure gradient in flow rate from both
sides.
The pressure gradient on the closing valve in its relocation is approved at the technical
specifications, and shall be stated in TC.
3.8 In normal operating mode, water velocity in the pipeline is up to 5 m/s, velocity of steam
and gas is up to 60 m/s; water velocity up to 7.5 m/s and velocity of steam and gas up to 100
m/s is admissible for the period of 1,000 hours during service life of the valve. In the valves
of the SAOZ (The active cooling zone system) and SAOR (The active reactor protection
system) systems, short-term increase of water velocity up to 25 m/s is allowed in emergency
mode for the period of 10 hr/year, which shall be stated in the order and in TC.
3.9 The valves are usually welded to the equipment and pipeline. Relief valves and hermetic
valves can be connected by flanges. Counterflanges delivered together with the valve can be
butt welded.
Dimensions and shape of welded ends are given in Annex 5.
3.10 Tightness of flap of check valves is determined by tests using water at working
overpressure and temperature of 20°C ± 10°C. The leakage must not exceed:
for DN < 100
for 100 < DN < 200
for 200 < DN < 300
for 300 < DN < 800
- 3 cm3/min.
- 7 cm3/min.
- 12 cm3/min.
- 25 cm3/min.
-10-
The size of leakages in design pressure gradient in check valves of the primary circuit in
overpressure Px) = 18 MPa, DN 125, 250, 300 shall be approved at preparation of TC.
Leakages in flap of check valves shall be determined on the basis of results of
prototype tests, and shall be approved by the customer.
Leakage of flap of control valves shall be determined in accordance with GOST
23866-87 with fully closed flap and full pressure gradient. The class according to GOST
23866-87 shall be determined by the general designer of AES.
Leakages in two- and multi-saddle valves shall be determined according to the results
of prototype tests, and approved by the customer.
Tightness of flap of closing and quick-acting valves of DN > 300 must correspond to
Class 1, and in valves of DN > 300 to Class 2 according to GOST 9544-75.
For straight valves of hydraulic discharge, leakage of flap up to 1 litre/hr is allowed.
If the inlet and outlet nominal inner diameter are not identical (DN), and in case of
two-side flow rate, leakages are allowed according to the outlet nozzle.
3.11 The check valves must close in interruption of flow of medium and must open at
pressure gradient p = 0.03 MPa (the pressure gradient will be determined with final validity
at prototype tests and is approved by the customer before start of deliveries).
3.12 Sliding valves for vacuum must be designed in such a way to ensure both
impermeability and tightness in the flap at a pressure up to 0.004 MPa.
The requirements for tightness of the flap are specified in the order.
The sliding valves must be equipped with a special nozzle allowing filling the inner
space of body with water with closed flap in order to ensure tightness.
3.13 The design of valves must allow washing of both internal and external surfaces by
decontaminating solutions (electrical drives are decontaminated only on the external surface).
The design of valves for radioactive heat conductor (determined in Point 9.4 of OSP72/87) must allow possibility of draining the heat conductor, liquids and decontamination
solutions.
In decontamination of external surfaces, removal (draining) of the sued solutions must
be ensured in maximum degree.
The material of valves and completing parts that are not equipped with protective
coating as well as the surfaces with protective coating must be resistant against corrosion in
the respective decontamination solutions.
Washing and decontamination are carried out using the following solutions:
Stainless steels:
1st composition: a) 40 g/l of NaOH (KOH) + 5 g/l of KMnO4 (40 g of sodium hydroxide
(potassium hydroxide) + 5 g/l of potassium permanganate)
b) 30 g/l of H2C2O4 + (0.5 g/l of H2O2 or 1 g/l of HNO3) /30 g /l of oxalic
acid + (0.5 g/l of hydrogen peroxide or 1 g/l of nitric acid)
At first, decontamination is carried out using the solution a), then the solution b). After each
stage, rinsing by condensate is carried out.
Rinsing by each solution lasts up to 10 hours/year.
Frequency once yearly
Temperature of solution up to 95°C
x)
P – here and in the text bellow always means design P.
-11-
2nd composition: a) 6 g/l of H3BO3 + 1 g/l of KMnO4 (6 g/l of boric acid + 1 g/l of potassium
permanganate
b) 1 g/l of H3C6H5O7 + 4 g/l of C10H16O6N2 + N2H4 . 2H2O up to pH = 5.0 5.5 (1 g/l of citric acid + 4 g/l of ethylenediaminetetraacetic acid +
hydrazine hydrate up to pH = 5 - 5.5).
At first, decontamination is carried out by the solution a), in which the solution b) is dosed
without rinsing. After decontamination, rinsing by the condensate is carried out.
Duration of rinsing by the solution a) ……………………….. up to 5 hr/year
b) ……………………….. up to 10 hr/year
Frequency: once per 4 years
Temperature of solution a) ……………….. up to 95°C
b) ………………. up to 95°C
rd
3 composition: 50 g/l of HNO3 + 5 g/l of H2C2O4 (50 g/l of nitric acid + 5 g/l of oxalic acid)
After decontamination, rinsing using the condensate is carried out.
Frequency once yearly
Temperature of solution up to 95°C
Duration of rinsing up to 10 hr/year
4th composition: a) 20 g/l of H2C2O4 + NH3 up to pH = 2.0 (20 g/l of oxalic acid +
ammonium up to pH = 2.0)
b) 5 g/l of H2O2 (5 g/l of hydrogen peroxide)
Decontamination is carried out by the solution a), in which the solution b) is periodically
added until the concentration of hydrogen peroxide that equals to 5 g/l is achieved. After
decontamination, rinsing using the condensate is carried out
Duration of rinsing up to 15 hours
Frequency once per 2 years
Temperature up to 95°C
5th composition: a) 40 g/l of NaOH (KOH) + 5 g/l of KMnO4 (40 g/l of sodium hydroxide
(potassium hydroxide) + 5 g/l of potassium permanganate)
b) 25 g/l of C10H6O6C2A2 + 5 g/l of HCHO (HNO3) (25 g/l of sodium salt of
chromotropic acid (DCHK) + 5 g/l of citric acid (nitric acid)
At first, decontamination is carried out by the solution a),, then by the solution b). After each
stage, rinsing by the condensate is carried out.
Duration of rinsing by each solution up to 1.5 hour
Frequency 10 times per year
Temperature up to 95°C
6th composition: up to 5 g/l of KMnO4 + 5 g/l of HNO3 + 30 g/l of OEDF
(oxyethylenediphosphoric acid)
After decontamination, rinsing by the condensate is carried out.
Duration of rinsing 1 hour
Frequency 10 times per year
Temperature up to 95°C
-12-
Carbon steels
7th composition: 50 g/l of H3PO4 + 10 g/l of C10H14O8N2Na2 + 0.2 g/l of C7H5NS2 (50 g/l of
orthophosphoric acid + 10 g/l of sodium salt of ethylenediaminetetraacetic
acid a 0.2 g/l of Kaptax)
After decontamination, rinsing by the condensate is carried out.
Duration of rinsing up to 10 hours/year
Frequency once yearly
Temperature up to 95°C
In addition to the above, carbon steels must be resistant against the 4th composition.
The materials of valves with protective coating must be resistant against compositions 4 and
7.
Maximum concentrations of chemicals with purity of min “C” (Purity C belongs to
substances with the content of min. 98% of the basic chemical) are stated in compositions 1 –
7.
Compositions 1 - 5 are used for internal decontamination, compositions 6 and 7 are used both
for internal and external decontamination.
3.14 Electrical devices, sensors and solenoid valves must not be immersed in tubs with
decontamination solutions. Decontamination modes for electrical equipment are determined
in TC, and are approved by the customer.
3.15 The closing valves must have a local indicator of the closing member position.
Necessity of the closing member local position indicator for other types of valve shall be
determined by the customer (designing organization) with request for development of valves
after approval by the designing-construction inspection of Gospromatomenergonadzor.
3.16 Requirements for remote signalling of the valve working member position.
3.16.1 In closing valves with electrical drives, switches (limit switches) are anticipated for
remote signalling of end positions.
In manually operated valves (by hand wheel, remote controller, cone gear) there must exist a
modification equipped with limit switches for remote signalling of end positions and
intermediate position of the flap in the control room. The demand for installation of limit
switches shall be discussed at ordering the development of new valve, and shall be stated in
the order.
3.16.2 Necessity of installation of remote indicators of closing member position for other
types of valves is determined by the customer (designing organization) in request for
development
after
approval
by
the
designing-construction
inspection
of
Gospromatomenergonadzor.
3.16.3 The valves of equipment and pipelines of Classes A and B , where we do not
anticipate relocation of the closing members and that can have effect on safety of AES must
have the device for forming the signals on the position of flap for the information-computer
systems in the entire range of stroke of valve, which shall be discussed in ordering the
development
after approval by the designing-construction inspection of
Gospromatomenergonadzor.
-13-
3.17 In manually operated valves, the force on hand wheel must not exceed:
- in relocation of the flap – 295 N
- in rejection of the flap from end position or in additional sealing under the condition that
opening and closing are not carried out more frequently than once daily - 735 N save the
valves with the impact wheel.
3.18 The valves with packing seal of the spindle installed on the equipment and pipelines
with radioactive working medium must be equipped with drainage of ingresses from the
intermediate seal space into the system of organized drainage of ingresses with a pressure of
0.09 = 0.15 MPa. The inner diameter of nozzles for drainage of ingresses is DN 10 (14 x 2).
This requirement is not related to the KIP packing seal valves.
3.19 The design of safety valves must allow the change of adjustment of opening
overpressure within the range of 7% of nominal opening overpressure.
3.20 In outage of electrical current, the position of flap in valves with electrical drive must
not be changed.
3.21 When turning the hand wheel clockwise, the valve must be closed.
3.22 Adjustments of moment switch in valves with electrical drive must correspond to the
data in TP in the given table (according to the specimen in Annex 3) for achievement
tightness of the flap.
3.23 In specification of the designing of valves for the primary circuit, equipment and
reactors VVER 100 and RBKM, the customer shall specify the changes in parameters listed
in Annex 2.
3.24 The valves of the secondary circuit must preserve functionality in heating and cooling
the working medium up to 150°C/hr (at least 2,000 heating-cooling cycles).
In specification of the development of valves both for the primary and secondary
circuit, more precise and additional requests for changes in parameters of working media can
be specified.
Installation of sensors for control of heating rate is not required, as a rule, for the
valves. Installation of sensors for control of heating rate is carried out in individual cases
based on the customer’s request, or on the basis of the valve designer’s decision.
3.25 Strength calculation of valves must be carried out taking into account maximum allowed
loads from the pipelines listed in Annex No. 4. The values of load must be stated in TC.
The valve must not be used as the pipeline support.
The tables in annex state maximum allowed loads from the pipelines and treatment of
ends for welding that apply to the pipelines assembled from tubes manufactured in the USSR.
In case if the tubes delivered from other countries are used, with different treatment of
ends for welding and with different maximum allowed loads, particular TC can be completed
with corresponding annexes after their approval by the customer. The highest allowed loads
from pipelines must not exceed the values given in Annex 4.
-14-
3.26 Impermeability of the valve (tightness against the external environment) must not be
disturbed in case of failure of the switching off devices of the electrical drive at arbitrary
position of the flap.
3.27 The valve must be repairable without cutting out from the pipeline for major overhaul.
This requirements doe not apply to undetachable check valves.
3.28 The time that is necessary for opening and closing the closing valves must not be longer
than:
- in quick-acting valves with electrical drive or pneumatic drive …………… 10 secondsx)
- in valves with electrical drive, DN 10 – 150 ………………………………. up to 60 seconds
- in sliding valves of DN 100 – 400 …………………………………………. up to 1.5 min.
- in sliding valves of DN > 400 …………………………………………….. up to 3 min.
The particular time of opening (closing) of the valve shall be stated in TC and TZ.
3.29 TC mast include the drawing of the valve with clearance capacity (including mounting
dimensions), connecting dimensions, dimensions of welding ends, type of weld seam, places
for additional anchorage to the building structures giving allowed loads on the anchorage
points. Clearance capacities of valves are given in Annex 7.
In the types of valves that are not listed in Annex 7, the clearance capacities and
connection dimensions shall be approved during preparation of TC.
3.30 Based on a separate order, the closing valve can be equipped with the built-in lock
preventing anticipated opening or closing of the valve. Necessity of installation of the lock
shall be negotiated in ordering the design, and shall be stated in the order.
3.31 Based on the special customer’s request, the valve must be delivered in design resistant
against vibration. The requirements for resistance against vibration are given by the
customer, and are discussed with the manufacturer of the valve.
3.32 In closing valves with the upper flap, the electrical drive in the “open” position can be
switched off by a moment switch. This must be stated in TC.
3.33 The design of valves working with two-phase and boiling media must take into account
the use of coatings and other constructional measures for protection of the body and internal
structure of valves and adjacent pipelines against erosion effects.
3.34 In newly processed and completed structure of Safety Class 1, 2 and 3a according to
OPB-88, the system of defects diagnostics and determination of deviations from normal
function must be taken into account as a rule. The diagnostics system is determined for each
particular typical dimension in specification of the development.
x)
To be specified in TC
-15-
4. REQUIREMENTS FOR MATERIAL AND SEMI-FINISHED GOODS
4.1 For manufacture of basic components of valves, the materials corresponding to the
requirements of “AES Rules” and Annex 11 are allowed.
TC for the materials that are not listed in “AES Rules must be approved by the procedure
prescribe in “AES Rules”.
4.2 The semi-finished goods must correspond to the requirements of standards and technical
conditions for the semi-finished goods or products listed in Annex 9. to “AES Rules”.
4.3 The valves from stainless steel with surface larger than 10-2 m2 that are in contact with
heat conductor of the primary circuit must not have the contents of cobalt higher than 0.2%.
The request for limitation of the cobalt content does not apply to bellows.
-16-
5. REQUIREMENTS FOR WELDED CONNECTIONS
5.1 The filler metal for welding, welded connections and weld deposits must meet the
requirements of OP, PK and technical documentation including the programmed or schemetable of quality inspections approved in the established order.
5.2 The materials for weld bead of sealing surfaces of valve shall be determined by the
designer of valve, and approved by the customer at the stage of preparation of the technical
documentation for the particular valve (technical project or TC).
The materials recommended by Annex 12 shall be selected for weld bead of sealing
surfaces; the use of new materials must be approved by Gospromatomenergonadzor.
-17-
6. THE REQUIREMENTS FOR MANUFACTURE
6.1 Before installation, the components and sub-groups must be cleaned from scale, rust, dirt,
fats and conservation agents.
Non-burred edges or batter are not allowed.
6.2 In valves welded from pressings or forged, the roughness of surfaces coming into contact
with radioactive working substance must observe the instructions on working drawings and
must not be worse than Ra = 6.3 (Rz = 40).
Roughness up to 12.5 (Rz 80) is allowed on poorly accessible places.
Roughness of external surfaces must not be higher than Ra 100 (Rz 500), or must
correspond to the requirements of non-destructive tests
6.3 Roughness of the surface of cast parts of the body must meet the requirements of PN AE
G-7-025-90.
The requirements for roughness of the other parts of castings are given in the design
documentation.
6.4 The cylindrical portion of the spindle passing through the packing seal must not have
roughness worse than Ra 0.2 (Rz 1.6). In bellows valves, roughness of the spindle in the area
of secondary packing seal can be maximum Ra 0.8 (Rz 3.2).
6.5 If deviations of shape and position are not stated in the drawings, deviations according to
GOST 25069-81 are valid.
6.6 Tolerances of angles that are not stated in the drawings shall be governed by GOST
25670-83.
6.7 Sharp edges, transitions and notches are not allowed in mechanical machining of
components, until they are prescribed by the design documentation.
Chamfering-off edges and blunting notches that is not prescribed by the drawing must be
carried out using the radius or chamfered edge of 0.2 – 0.5 mm.
At points of the change in shape and thickness of the wall, the transition arch with a diameter
of at least 0.2 x thickness of the thinner wall must be present.
6.8 Welding valve must be delivered with machined ends of nozzles for welding.
The thickness of nozzles is determined based on the condition of equal strength with
the pipeline. The strength of the nozzle can be higher than the strength of pipeline, if the
requirements of “AES Rules” related to welded connections have been met.
Connecting dimensions of the pipelines connected to the valve shall be determined by
the customer according Annex 5.
6.9 Packing seal must be installed to the stuffing-box chamber using the technology ensuring
the correct function of the stuffing-box.
-18-
6.10 The height of stuffing-box must be such that in tightening the stuffing-box, the cover of
stuffing-box can reach up to the stuffing-box space min. 3 mm, maximum up to one third of
its length.
6.11 The difference in hardness of semi-finished goods of screws and nuts or the difference
in hardness of threads of screws and nuts must be at least 12 HB, while hardness of the nut
must be smaller than the hardness of the screw.
6.12 The valves, their nodes and parts manufactures from carbon steel shall be covered by
protective coatings according to the technological instructions of the manufacturer agreed
with the customer.
Mark of coatings must be stated in TC.
6.13 The valves with nominal inner diameter of DN 50, independently on the method of
control must have places allowing their anchorage to the building structures. Anchorage must
withstand the load from seismic effects, from own mass of the valve and drive, the load from
pipelines according to tables in Annex 4.
The manner of anchorage and allowed loads shall be stated in TC.
6.14 In valves with installed electrical drive, it must be possible to rotate the drive around the
spindle axis by multiples of 45°.
6.15 The valves with installed electrical drive must have places allowing their anchorage to
the building structures with design load like in Point 6.13.
The manner of anchorage and allowed loads shall be stated in TC.
6.16 In valves with upper flap, possibility of tightness inspection must be ensured.
6.17 Sealing of the flanged connection of the body with cover is carried out wither metal to
metal (by lapping) or using the sealing. The design of valves for radioactive medium must
ensure possibility of additional sealing by sealing weld at operation of AES.
-19-
7. REQUIREMENTS FOR RESISTANCE AGAINST EXTERNAL EFFECTS
7.1 The parameters of the environment under normal operation in areas accessible for
operators are as follows:
- temperature
5 – 40°C
- pressure
0.1 MPa (1 kp/cm2)
- relative humidity 75% at 40°C
7.2 Parameters under containment of AES with VVER reactors are given in Table 5.
7.3 Parameters of the environment in areas of AES with RBMK reactors are given in Table 6
7.4 Parameters of the environment for particular valve shall be determined by the customer in
specification of the design of new valve.
7.5 Valves and their completing components intended for safety systems and installed under
the containment (in the hermetic zone) must preserve functionality during emergency
conditions and after them specified in Tab. 5 and 6. The valve and completing components
must also ensure performance of at least 10 working cycles, namely during emergency mode
of large leakage and after reduction of parameters (after-emergency mode). The requirement
for preserving functionality does not relate to control valves.
It is admitted that functionality of the valve would be confirmed on the basis of
verification of functionality of completing components with imitation load.
After ending the large emergency mode, the valves are inspected and repaired, if
necessary.
7.6 The valves working in the systems important for AES safety (seismic resistant) must
preserve their strength, tightness and functionality within the range of values specified in TC
during seismic event and after its end. (MRZ for the valves of Class I and II, PZ for the
valves of Class III)
The other valves (seismic resistant) must preserve their strength and impermeability
during seismic event and even after its end.
Seismic resistance of the valve shall be confirmed by calculation or experimentally.
Functionality of the valve shall be confirmed experimentally.
Calculation of seismic resistance of the valves shall be carried out according to
“Standards fir calculation of strengths of equipment and pipelines of AES”.
The calculation shall be carried out using anticipated fixed anchorage of nozzles.
Own frequencies of the valve shall be determined.
For the valves with own frequencies lower than 20 Hz, the calculation shall be carried
out using either the dynamic analysis method (DAM) or the linear-spectral method (LSM).
-20-
Table 5
Parameters of the environment under the containment with VVER reactors
Parameter
Normal operating
Operating mode with
Emergency mode of
mode
disturbed heat removal
“small leakage”
1
2
3
4
Temperature, °C
20 + 60
5 + 75
up to 90
Absolute pressure, MPa
0.085 + 0.1032
0.05 + 0.12
Up to 0.17
Relative humidity, %
up to 90
up to 100
Mixture of steam and air
Levels of radiation, rad/hr
up to 100
up to 100
up to 100
Time of duration of mode, hours
up to 15
Frequency of the origin of mode,
1
0.5
events/year
Pressure after emergency event,
0.05 + 0.12
MPa
Temperature after emergency event,
5 + 60
°C
Time of duration of emergency
up to 5
pressure and temperature, hours
Time of duration of afterup to 720
emergency pressure and
temperature, hours
-21-
Emergency mode of “large
leakage”
5
up to 150
up to 0.5
Mixture of steam and air
up to 105
1/30
0.05 + 0.12
5 + 60
up to 10
up to 720
Notes:
1) Integral dose of radiation during 30 years of NPP operation: a) without inclusion of emergency mode of large leakage – 3 . 107 rad.
2) Test pressure of containment and the equipment located in it: 0.05 - 0.56 MPa
3) Tests of the containment under pressure of 0.56 MPa shall be carried out once yearly before commissioning of NPP. The pressure is
increased stepwise for the period of 4 days (96 hours), full pressure is maintained for 1 day
4) Increasing of pressure to 0.17 MPa for the period of 2 days (48 hours). The test is carried out once per 2 years.
5) Air temperature at tests – up to 60°C
6) In emergency mode, intensive solution spraying is used containing 16 g/kg of boric acid with addition of 3 g/kg of potassium hydroxide
or 150 mg/kg hydrazine hydrate.
7) In emergency mode of small leakage, temperature of solution is 5 to 90°C
In emergency mode of large leakage, temperature of solution is 5 to 150°C
8) In NPP with tropical climate, temperature in heat removal disturbation mode is 5 to 85°C
9) In mode of small leakage: time for increasing pressure from 0.085 MPa to 0.17 MPa and temperature from 20°C to 90°C is 60 s; time for
reduction of pressure from 0.17 MPa to 0.05 MPa is 30 minutes, temperature from 90°C to 20°C is approx. 8 s (stepwise).
10) In mode of large leakage: time for increasing pressure from 0.085 MPa to 0.5 MPa and temperature from 20°C to 150°C is 8 s; time for
reduction of pressure from 0.5 MPa to 0.05 MPa is 3 hours; temperature from 150°C to 20°C – stepwise.
-22-
Table 6
Parameters of the environment in rooms with RBMK reactors
Parameter
Normal operating mode
In attended areas
In boxes
1
Temperature, °C
Pressure, MPa
Time of duration of mode
2
5 – 40
0.1
permanently
3
5 – 70
0.1
permanently
Relative humidity, %
Frequency of the origin of mode,
events/year
Levels of radiation, rad/hr
up to 75
permanently
95 ± 3
permanently
Emergency mode
in boxes induced
by the loss of
equipment
tightness
4
up to 105
up to 0,05
6 hours
10-4
2.8 . 10-3
Emergency mode of “large leakage” in hermetic box
5
150
0.5
6
125
0.25
From beginning of
emergency event
5 s – 6 hr
Mixture of steam and water
7/30
up to 5.206
Note: For operating mode in disturbance of heat removal see Tab. 5
-23-
7
100
When using DAM, the valve is calculated for three-component synthesized seismic load
lasting for 20 seconds standardize to 30 ms-2 in both horizontal axes and 20 ms-2 in the
vertical direction.
When using LSM, 30 ms-2 in arbitrary horizontal direction and 20 ms-2 in vertical direction
are entered at the point of anchorage of nozzles.
In valves whose first own frequency is higher than 20 Hz, the calculation is carried out quasi
statically. Linear distributed load with acceleration of 30 ms-2 in the nozzle axis and 80 ms-2
in the drive gravity centre is taken into account in the arbitrary horizontal direction as the
effect of the event.
In valves with the first own frequency higher than 33 Hz, the calculation is carried out
statically for uniformly distributed loads by forces arising from acceleration of 30 ms-2.
If the calculation does not confirm seismic resistance of the valve, it is necessary to carry out
measures resulting in reduction of strain of the valve and/or to change its design.
The strength, tightness and function of the valve is verified by experimental methods during
action of test loads.
Particular parameters at tests shall be determined based on an agreement between the
customer and the designer of the valve, while accepted design seismic loads are taken into
account.
During tests, the valve is attached (clamped) behind nozzles, until a different method of
anchorage is prescribed in TC.
The test of the valve is carried out simultaneously in three mutually perpendicular axes. If this
requirement cannot be fulfilled, it is admissible to carry out seismic tests in three mutually
perpendicular directions sequentially.
The tests are carried out in the rage of frequencies from 1 to 30 Hz.
The level of excitation in the vertical direction is 70% of the level of the horizontal excitation.
It is proven that own frequency of the valve is higher than 10 Hz, it is admissible to carry out
tests from 5 Hz higher. The strength of valve at values bellow 5 Hz is checked using quasi
static calculation provided that uniformly distributed acceleration of 30 ms-2 acts along the
entire height of the valve (for MRZ).
In individual cases, the levels of seismic load can be changed taking into account particular
conditions of operation based on the customer’s request approved by the designer of the
valve.
On the basis of the customer’s approval, confirmation of seismic resistance of valve is
admitted based on the results of calculation or experimental verification of seismic resistance
of valve prototypes of analogical design.
Tests of seismic resistance are carried out according to the programs and methodologies
approved by the designing organization, construction organization and the customer.
-24-
8. REQUIREMENTS FOR RELIABILITY
8.1 The valves save undetachable check valves belong to the category of repairable renovated
products with the prescribed mode of renovations given by the operation time. Preventive
inspections are allowed during operation and in necessary cases, repairs (new sealing of
stuffing boxes, replenishment of lubrication etc.) are also allowed, but the soonest after
10,000 hours of continuous operation of the equipment.
After 4 years (30,000 operating hours), inspections are carried out. When using
diagnostic means of valves during operation, based on the decision approved by the main
designing organisation (VNIIAM, CKBA) and by the local atomic supervisory authority
(GPAN), inspection is allowed without dismantling the valve.
Anticipated service life (up to disposal) of removable parts and accessories is 10 years.
Anticipated service life (up to disposal) of components of bodies is 30 years.
8.2 The prescribed number of cycles (service life in cycles) for
hours) is:
- in sliding valves …………………………………………….
- in check valves ……………………………………………..
- in closing valves ……………………………………………
- in safety valves ……………………………………………..
- in closing-throttling valve ………………………………….
- in quick-acting valves with electrical or pneumatic drive ....
- in check valves and closing valves of safety systems ……..
the period of 4 years (30,000
1,000 cycles
2,700 cycles
3,000 cycles
200 cycles
500 cycles
500 cycles
500 cycles
Service life of control valve is determined in hours.
Working mode: quantity of closings per one hours and extent of regulation shall be
determined in the order.
On the basis of inspection, the mentioned service life can be extended for further period, but
max. for 10 years.
Inspection of undetachable check valves of the Butterfly type is carried out maximum once
per 10 years of operation.
8.3 Probability of failure free operation for the design number of cycles (4 years) must be at
least:
- in valves with electrical drive ………………………………………………….. 0.95
- in valves with remote control ………………………………………………….. 0.96
- in manually operated valves …………………………………………………… 0.98
- in quick-acting isolating valves, check valves and closing valves, safety
valves intended for safety systems and important for safety when carrying
out 25 cycles for 4 years ……………………………………………………….. 0.995
In valves with built-in gearbox in the control, probability of failure free operation must be at
least:
- in valves with electrical drive ………………………………………………….. 0.93
- in valves with remote control ………………………………………………….. 0.94
- in manually operated valves …………………………………………………… 0.96
In control valves, probability of failure free operation during 30,000 hours (4 years) must be
at least:
-25-
- in valves installed to safety systems ………………………………………….. 0.96
- in valves installed into the systems important for safety …………………….. 0.94
- in valves under normal operating conditions ………………………………… 0.90
8.4 Calculation of probability of failure free operation is carried out at the stage of preparation
of the project (designing) and in the valves intended for safety systems it is confirmed either
on the basis of tests or on the basis of operation monitoring.
8.5 In valves intended for safety systems, confidence level for calculation of the lower
confidence probability limit of failure free operation is 0.95.
In valves for normal operation, the confidence level is stated in the test schedule.
-26-
9. COMPLETENESS
The complete delivery consists of the valve and accessories.
9.1 Product
9.1.1 Valve with electrical drive DN < 300 with electrical drive installed on the valve.
In valves with electrical drive DN > 300, delivery of the valve with the dismantled drive in a
common package is allowed.
9.1.2 Omitted
9.1.3 The limit switches of end positions of closing member are installed on the valve (see
Point 3.16) or packed in accordance with TC on switches of valve.
9.1.4 The set of spare parts corresponding to the ZIP list (spare parts, tools and other
accessories). The particular list will be prepared during approval of TC.
9.1.5 The set of test rings of all dimensions with one end machined for check welds according
to PK at the customer. Necessity of delivery of check rings, their quantity and dimensions are
stated in ordering the valves.
9.1.6 The quick-acting valve with pneumatic drive is delivered together with air distributors
and limit switches.
9.1.7 Counterflanges and connecting screws in flanged valves (Necessity of delivery will be
determined during approval of TC).
The valves of Group A and B with the body-cover connection, if it is prescribed in the design
documentation, must be completed with the equipment allowing inspection of tightness of
bolts. In valves of Group A the necessity of this equipment must be confirmed by AES.
9.2 The original technical documentation is delivered in the following extent:
a) technical and operation data card according Annex 6,
b) drawings of components undergoing quick wear and tear,
c) strength calculation of components of bodies carried out according to standards for
calculation of strength (NRP), or extract from the strength calculation in accordance with
OPB,
d) technical description including recommendation for carrying out repairs and operating
instructions
e) technical and operation data card, technical description, operating instructions and
dimensional sketches (if they are not stated in the technical description or in the operating
instructions) for completing parts,
f) packing (delivery) note.
9.2.1. The technical and operation data card is delivered with each valve with inner diameter
larger than 150 mm, safety valves (both main and ancillary).
In valves DN 150 and smaller, issuance of one technical operation data card is allowed for
maximum 50 pc of valves.
-27-
The other documentation, safe strength calculation and drawings of components of bodies and
components under going quick wear according to Point 9.2 is delivered in two sets per one
group of products send based on one contract or one trans, if it is stated in the contract giving
serial numbers of all products, which it is related to.
The strength calculation and drawings of body and quickly worn components of each
dimension are delivered with the first product in one copy for each trans.
The group means a group of products of the same type, identical DN, Pvyp, made of steel of
the same mark in quantity of max. 200 pc.
9.2.2. The original documentation is delivered to the customer together with delivery of
valves.
-28-
10. MARKING, PRESERVATION AND PACKING
10.1. The manufacturer of valves must make marking on the valve body, at the visible place,
containing the following data:
1. Name or sign of manufacturer
2. Serial number
3. Year of manufacturer
4. Design over pressure in the body
5. Design temperature in the body
6. Nominal inner diameter DN
7. Arrow marking the direction of flow rate (at allowed unilateral flow)
8. Type of working medium (liquid –l, gas-g, steam-s)
9. Class and group of valve according to OTT – 87
10. Identification of the product
10.2. For the period of transport and storage, the valve must be preserved according to the
instruction for preservation approved by the customer.
The connecting parts, spindles and other unpainted components shall be preserved by grease
K-17 according to GOST 10877 – 76 or by other preservation agent approved by the
customer.
10.3. Machined welding ends of valves made of pearlitic steel are not painted or preserved up
to the distance of 20 mm from the end.
10.4. Packaging of valves, completing parts and components must ensure integrity of products
during transport and storage. The method of packaging shall be determined in TC. In this, it is
recommended taking into account:
- the valve, set of spare parts, electrical drive, tools, operating packing seal of the spindle shall
be packed into the box lined with waterproof paper and shall be secured in such a way to
prevent mutual movements. The package must protect the valves and completing parts against
mechanical and climatic influences.
- the products up to DN 50 shall be packed in advance into welded polyethylene packages.
Polyethylene foil or other materials preventing pollution or moisture are used for packaging
of valves over DN 50 and valves with electrical drive. Inhibitors are put inside the package
from foil in valves from carbon steel. The package must protect the products during transport
and storage.
- in order to eliminate manifestation of electrochemical corrosion of surfaces in contact with
the stuffing-box sealing, the sealing valves save KIP valves are delivered with transport
packing sealing of the “AS” type according to GOST 5152 – 77 saturated with inhibitor "G-2”
according to TP 6-02-880-73 or with water-glycerine solution or sodium nitrate or by other
similar solutions. If it is guaranteed that electrochemical corrosion of the spindles and
stuffing-box chambers will not occur, delivery of valves operating packing sealing is allowed.
- before putting the valves into operation, transport packing seal will be replaced with the
operating packing seal delivered together with the valve.
-29-
even other methods of packaging are allowed after discussion with the customer
the valves must be stored in places secured against action of fallout and direct sun beams.
10.5. The nozzles of the valve must be covered by blinds protecting the inner spaces of the
valve against penetration of dirt and moisture and preventing damage to weld edges.
Variant of inner packaging according to GOST 9.014-78 (VU-9)
10.6. The documentation belonging into the delivery according to Point 9.2 must be packed in
water proof envelope that is inserted into the box together with the first product.
One copy of the packing (delivery) notes must be inserted into the box. The second copy
shall be attached in the water proof envelope in the external surface of the box.
10.7. The date of preservation, type of protection, variant of inner packaging, storage
conditions, duration of protection without preservation shall be stated in the accompanying
documentation to the preserved products.
-30-
11. ACCEPTANCE RULES
11.1 Acceptance and inspection of quality of individual operations, details of assembles and
completed products shall be carried out by the technical inspection authorities in accordance
with requirements of technical (design documentation) including the schedule of quality
control of the valve manufacturer.
11.2. The materials and components whose quality corresponds to the requirements of the
“AES Rules” and technical documentation are allowed for manufacture and assembly, which
were taken over by the technical inspection authorities of the manufacturer.
11.3. Acceptance of components, subassemblies and products in the serial production shall be
carried out by representatives of GAEN in accordance with the determined “Acceptance
Volumes”.
11.4. The products taken over by the manufacturer’s technical inspection department are
submitted to the representatives of GAEN for acceptance.
11.5. The prototypes of valves are submitted to acceptance tests accordance with the
requirements of GOST 15.001-88. The serial samples undergo acceptance, periodical and type
test in accordance with the requirements of TC.
11.6. In acceptance test, the manufacturer must carry out external inspection of each product
and:
a) test of strength and impermeability of details of valve and welds working under
overpressure
b) test of function and smoothness of the run
c) tests of tightness of flap, spindle sealing (if it not replaced after test), tightness of the
connection between the body and cover, tightness of the upper flap (in valves with organized
leakage drainage) etc.
d) test of vacuum tightness against the surroundings (in valves working under absolute
pressure < 0.1 MPa and bellows valves).
Other types and scopes of tests are determined by TC or by programmes of test. x)
11.7. The periodical test of valves manufactured according to the same TC shall be carried out
by the manufacturing plan or by the specialized organization with invitation of the
representatives of designing and the customer at least once per 3 years. The objective is to
confirm stability of qualitative indicators. Duration and conditions of test as well as the
quantity of products that should be tested shall be determined in TC and in the technical
documentation of the product.
11.8. The type test must be carried out in the change of design or in the change of
technological procedures, if these changes can have effect on the technical characteristics on
the product.
x)
The valve equipped with completing parts and completing nodes is admitted to tests.
-31-
The test shall be carried out by the manufacturing plan or by the specialized
organization according to he scheduled and methodology discussed with the customer. The
results of test will be summarized into the final act and shall be delivered to the customer.
11.9. The test of prototypes is carried out according to the schedule of tests discussed with the
customer.
11.10. It is allowed to confirm stability or quality on the results of monitoring and operation
or on the basis of the results of collection of information on operation reliability of the valve.
-32-
12. REQUIREMENTS FOR INSPECTION OF MATERIALS AND PRODUCTS
12.1. Inspection of material
12.1.1 Requirements of this section of OTT – 87 are related to the basis parts of the valve.
The basis parts of the valve are those, who failure can result in the loss of tightness of the
valve against the surroundings.
12.1.2 Depending on the class of the valve, the semi-finished goods intended for manufacture
must be tested by tests specified in Table 7.
Table 7
Types of inspections of material of basic parts
(save connecting components)
Type of inspection
1a
1. Chemical analysis
2. Inspection of the ferrite content in
austenitic steel
3. Inspection of macrostructure
4. Tensile test at normal temperature
5. Tensile test at increased temperature
6. Notch .toughness test at normal
temperature (corrosion resistance in
austenitic steel)
7. Determination of critical fragility
temperature
8. Inspection of resistance of austenitic
steels against intercrystalline corrosion
(corrosion resistance in martensiteaustenitic steels)
9. Inspection of content of non-metallic
impurities in anticorrosive steels
10. Ultrasonic inspection
11. X-ray or ultrasonic testing of castings
12. Liquid penetrant inspection or magnetic
particle method
13. Pressure test of castings
Class and group of valve
2B
2B
IIIb
IIIc
+
+
+
+
+
+
2B
IIa
+
+
2B
IIb
+
+
2B
IIIa
+
+
3C
IIIa
+
+
3C
IIIb
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-
+
-
+
+
+
+
+
+
+
-
+
+
+
+
+
+
+
+
+
+
+
+
+
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Notes to Table 7:
1. The type and extent of inspections of semi-finished goods can be completed based on
customer’s request
2. The list of spare parts must be stated in TC for the particular valve.
3. Determination of ferrite phase shall be carried out only for semi-finished goods of
welded parts. In semi-finished goods of non-welded parts, ferrite phase shall be
determined on the basis of the requirements given in the drawing.
4. When carrying out tensile test , the following characteristics are required as
acceptance ones:
Hot tensile test (at design temperature) shall be carried out in semi-finished goods of
the parts working at temperature of medium higher than 100°C.
5. The notch toughness test shall be carried out in cases, when tko is not determined.
6. Determination of critical temperature of fragility shall not be carried out in cases
specified in Point 5.3.2 of “AES Rules”.
-33-
7. Ultrasonic inspection of rolled materials with a diameter (thickness) of 20 mm can be
carried out at the closest higher dimension of the semi-finished goods. Ultrasonic
inspection of forgings can be carried out on the basic semi-finished goods.
8. The scope of inspection and evaluation of quality of castings shall be carried out
according to PN AE G-7-025-90
9. Inspection of castings using the liquid penetrant and magnetic particle methods shall
be carried out in accordance with PN AE G-7-025-90, in the other semi-finished goods
at points determined in the drawing.
10. The overpressure test of tubes and castings shall be carried out according to the
instructions on the drawings.
12.1.3 Methods of inspections and instructions for acceptance of the semi-finished goods shall
be stated in TC for the semi-finished goods or the products.
12.1.4 Quality and properties of the semi-finished goods must be documented by attests
stating:
Material mark, number of heat and group, heat treatment mode, results of all tests
(inspections) and data on repairs of defects.
12.1.5 Requirements for connecting material for the valves of Class I and II are determined by
GOST 23304-78.
Requirements for connecting material for the valves of Class 3 and for ancillary systems are
given in GOST 20700-75.
12.2 Inspection of welded connections and weld deposits of sealing surfaces
12.2.1 Inspection of welded connections is carried out according to PK. The category of
welded connections shall be determined by the designer in accordance with PK.
12.2.2 Inspection of weld deposits must be carried out before machining and after it.
12.2.3 Visual and dimension inspection of the welded-on surfaces must be carried out before
mechanical machining. Visual inspection shall be carried out on all welded-on surfaces across
the entire surfaces. The dimension inspection shall be carried out in the extent determined in
the production-technological documentation.
12.2.3.1 During visual inspection, cracks of all types independently on their dimension, pores,
cavities and slag inclusions (non-integrities), whose depth exceeds 65% of the machining
allowance are not admissible.
12.2.3.2 In dimension inspection, no deviations from the dimensions prescribed in the
production-technological documentation for the weld deposit are allowed.
12.2.3.3 Repair of ascertained defects (deviations from the requirements) is allowed.
12.2.4 After machining, visual inspection of welded-on surfaces, dimension inspection, liquid
penetrant inspection, hardness test and inspection of tightness after assembly must be carried
out.
-34-
The aforementioned inspections must be carried out in the extents as follows:
- visual inspection – for all weld deposits across the entire surface (including the side surfaces
and transition zone);
- dimension inspection and hardness inspection in the extent determined by the drawings and
production-technological documentation;
- liquid penetrant inspection of all welded-on sealing surfaces for DN 100 and more across the
entire surface (including sides and transition zone) and for DN smaller than 100 and guiding
surfaces in the extent according to the drawings and production-technological documentation.
- leakage test of weld deposits after assembly in the extent determined by the drawings and
TC for the valve.
12.2.5 The machined weld deposit must meet in the visual inspection the following
conditions:
a) cracks, imperfect welds and notches are not allowed in any case. Elongated defects and
groups of defects (group defects) are not allowed.
The elongated defects is the defect (pore, cavity, slag inclusion etc.) in which the ratio of the
largest length to the largest width is larger than 3 (the width shall be measured
perpendicularly to the direction of the largest length). If the aforementioned ratio is smaller or
equals to 3, the defect is considered circular.
The group defects are those, whose minimum distance between edges of arbitrary two
adjacent defects is smaller than fivefold of the largest length larger one of both defects in
question. If this distance is larger (or equal) than fivefold of the largest length of the larger
defect, the defects are consider isolated.
b) No surface circular isolated defects, whose dimensions are larger than admissible
dimensions according to Table 8, are allowed on the functional parts of weld deposits. Only
the defects, whose largest dimension is larger than 0.2 mm are taken into account. Isolated
circular defects taken into account (independently on their size and quantity), which are
located in a distance smaller than 2.5 mm from the boundary of functional part of the weld
deposit surface, are not allowed. Further, it is not admissible that two or more defects are
located on one radial straight line (in planar sealing surfaces) or on one surface straight line
(in conical sealing surfaces).
The boundaries of functional parts of conical sealing surfaces must be specified in the
drawings.
c) Isolated circular defects with the largest dimension larger than 1 mm are not allowed on
side (non-functional) surfaces. Isolated circular defects with the largest dimension over 0.2
mm to 1 mm inclusive are also not allowed, if their number is larger than 4 per arbitrary 100
mm of the length of side surface.
d) Isolated circular defects with the largest dimension larger than 1.5 mm are not allowed on
weld deposits of sealing surfaces and on non-functional parts of conical sealing surfaces. At
the same time, the aforementioned defects with dimensions from 0.2 mm to 1.5 mm inclusive
are not allowed, if their number is larger than 4 per arbitrary 100 mm of the length of guiding
surfaces or the length of non-functional parts of the weld deposit on the conical sealing
surface. Isolated circular defects taking into account (with maximum dimension larger than
0.2 mm) are not allowed, if they are located in a distance smaller than 2.5 mm from the
boundary of functional part of the conical sealing surface.
-35-
In case if no defects taking into account are present on the arbitrary section of the inspected
surface in a length of 100 mm, or if their number is not larger than two, the existence of one
group with maximum five small defects with the largest dimensions ranging from 0.2 to 0.5
mm inclusive is allowed instead of each couple of the mentioned defects, under the condition
that the group of defects covers the surface of maximum 40 mm2 and that the minimum
distance of the edge of the group from the edge of arbitrary other adjacent defect is at least
20 mm.
12.2.6 In inspection of dimensions after machining, no deviations from dimensions of
welded-on components from the dimensions stated on the drawing are allowed.
12.2.7 In liquid penetrant inspection, elongated indication traces are not allowed. Circular
indication traces are also not allowed, if their largest dimension is more than threefold larger
than the dimensions allowed according to Point 12.2.5, or such of them, where the minimum
distance between edges of arbitrary two adjacent traces is smaller than the largest diameter of
larger of them, or such of them, whose number exceeds the allowed values according to Point
12.2.5 (b, c, d).
If the found indication traces do not meet the mentioned requirements, removal of reagent
substances from the surface of the inspected section is allowed, and thorough visual
inspection shall be carried out at places, where indication traces were found. Admissibility of
real dimensions, location and number of defects are evaluated during the visual inspection
according to the data given in Point 12.2.5. The results of visual inspection are considered
final ones.
12.2.8 When measuring hardness of weld deposits, the measured mean value of hardness must
not deviate from the requirements given by the drawing and in the production-technological
documentation. The measuring of hardness shall be carried out according to GOST 9013 – 59.
In individual measurements, hardness can be smaller, but not more than 2HRC under the
condition that the mean value meets the prescription.
12.2.8.1 In weld deposits accessible for measurement, hardness is measured directly on
working surfaces of weld deposits after rough shaping with allowance for final machining
maximum 0.5 mm. (The allowance must be stated on drawings).
12.2.8.2 In weld deposits that are not accessible for hardness measurement, hardness
inspection shall be carried out on check weld deposits that are identical by mark of the basic
material, treatment for weld deposit, method of welding, group of welded-on materials,
technologies for welding and thermal treatment with weld deposits inspected on the products.
12.2.9 Results of tests of weld deposits of sealing surfaces for leakage (after assembly) must
meet the requirements specified on drawings and in TC for the product.
12.2.10 On the basis of the decision approved by the designing department, main organization
dealing with material science and the manufacturing plant, the normative data of this section
for individual types of valves can be modified taking into account their operating conditions.
The modified normative values must be given on the drawings and in the productiontechnological documentation.
-36-
12.2.11 X-rays and other documents required by PK must be archived in the manufacturing
plant for the period of 5 years from expiration of guarantee period.
12.2.12 The liquid penetrant inspection of quality of welds and weld deposits shall be carried
out according to GOST 18442-80 –Sensitivity Class II. The number of inspections must be in
accordance with PK.
12.2.13 Vacuum inspection of welds tightness shall be carried out according to Tightness
Class III of PK.
12.3 Inspection of valve
12.3.1 The inspection and measuring apparatuses and stands must be verified, if they meet the
attests or other technical documents stating the basic parameters of these devices. The
manometers used during tests must be verified and sealed.
The accuracy class of instruments must guarantee trustworthy of the results of tests.
The measured values must lie in the second third of the manometer scale. It is forbidden to
use for testing the measuring instruments with expired period of binding verification.
12.3.2 Before testing, the stands must be flushed in order to prevent penetration of impurities
into the tested products. The stands are cleaned and flushed according to the instructions of
the organization carrying out the tests.
12.3.3 Each valve (including bellows valves) must be after its manufacture hydraulically
(pneumatically) tested for strength and impermeability of the material of parts and welds
stressed by overpressure of working medium in accordance with the requirements of (AES
Rules”.
The hydraulic and pneumatic tests must be carried out in accordance with the requirements of
Section 5 of (AES Rules”.
In case of cast bodies and parts, the hydraulic (pneumatic) tests shall be carried out at a
temperature higher than 5°C. Critical temperature of fragility Tko is not taken into account.
12.3.4 The valve intended for non-radioactive working substances (for PP up to 10 MPa
inclusive) can be manufactured without bleeder plugs, if the volume after filling with water of
the parameters T=20°C, P=0.1 MPa (1 kg/cm2) is not larger than 30% of the inner volume of
the valve.
12.3.5 The test of strength and impermeability of the materials and welds of the valve must be
carried out before painting the valve.
12.3.6 In order to avoid damage, the tests of strength and impermeability shall be carried out
on details and subsystems of bellows valves before final installation of the valve according to
the data on the drawings. The bellows valves must be protected against compression or
expansion.
12.3.7 This point is omitted.
-37-
12.3.8 The assembled valve must be tested both at the manufacturer and at the customer by
the pressure tests for tightness of the packing seal, joints of the body with the cover, upper
flap (in valves with controlled drainage pf ingresses from the intra seal space) and tightness of
the flap. The tests shall be carried out according to the schedule and methodology of the
manufacturer.
The value of test overpressure must correspond to the data given on the assembly drawing and
in TC for the valve however they must not be lower than PVYP.
-38-
Table 8
Standards for admissibility of isolated circular defects on functional parts of the sealing surface weld deposit
Nominal width of
functional part of
weld deposit surface
of sealing surface;
mm
up to 5
from 5 to 10
from 10 to 15
from 15 to 25
from 25 to 35
from 35 to 50
over 50
Maximum allowed
dimension (length)
of surface isolated
circular defect; mm
0.5
0.6
0.8
1.0
1.2
1.5
The largest admissible number of surface isolated circular defects
Per arbitrary 100 Per total length of functional part of surface at nominal inner diameter of LN
mm of the length up to 65 from 65
from
from
from 250 from 400 over …
of functional part
to 100
100 to
150 to
to 400
to …
of surface
150
250
1
1
2
3
4
5
6
7
2
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
3
4
5
6
7
8
9
10
3
5
6
7
8
9
10
12
4
6
7
8
9
10
12
15
Notes:
1. The length of functional part of sealing surface shall be measured along circumference of the circle with a diameter that equals to the
mean diameter of the functional part of surface.
2. In case of the length of functional part of surface smaller than 100 mm, the normative data in the third column of the table must be
proportionally reduced and rounded to the next integer.
3. The normative data in the fourth column of the table (DN up to 65) relate only to the weld deposit with the length of functional parts at
least 100 mm at nominal width up to 15 mm or with the length of the functional part at least 150 mm with the nominal width over 15 mm.
If the length of functional part is smaller, the stated normative values must be proportionally reduced and rounded to the next integer.
-39-
Appendix No 1
In tests of tightness of packing seals and joints of the body with the cover, penetration of test
substance is not allowed.
12.3.9 During tests, the valves must be closed by the torque specified on the assembly drawing, or
according to the tape of control by spring force or by drive.
12.3.10 Tests of hydraulic drives shall be carried out with water, tests of pneumatic drives shall be
carried out using air.
12.3.11 Lubrication of sealing surfaces of valve flap at tests is not allowed.
12.3.12 The position of the product at tests must meet the prescriptions of the design
documentation.
12.3.13 The valves intended for gaseous working media must also be tested for tightness of parts,
welds and connections using air with working overpressure.
The testing time shall be at least:
- for valves up to DN 100: 2 minutes
- for valves of DN 100-300: 3 minutes
- for valves of DN over 300: 5 minutes
During the leakage test of the connection of body with the cover, the valve must be closed using
design force.
12.3.14 In tests using air, inspection of tightness shall be carried out according to the instructions of
the manufacturing plant either by application of foam solutions on inspected places (connections)
or by their immersion into water. Penetration of water into the bellows valve is not allowed. The
product passed the test, if no leakage was found (bubbles did not appear).
In test by immersion unto water, the presence of non-tearing bubbles is not considered defect.
Similarly, in test by foaming solutions, the presence of non-cracking bubbles is not any failure.
12.3.15 The tests of tightness of flap in bellows valves up to DN 50 shall be carried out using air. In
sliding valves, bellows valves up to DN 65 and larger and in check valves, the test is carried out
using water or air (according to the requirements of TC depending on working medium).
a) In bellows valves, the test shall be carried out after threefold closing. Air with a pressure PP is
supplied beneath cone save the valves, for which unilateral flow beneath the cone has been agreed.
The valve must be closed using the design force with flow of air through the saddle and through
throttle at the outlet. This can be replaced by slight opening the valve flap after previous closing.
The parameters of tests are specified in TC.
In leakage test using air, leakages are found either by immersing the valve into water or by
discharging leakages trough the tube.
The time of test is at least 3 minutes; allowed leakages are specified in Point 3.10.
b) In sliding valves, tightness of flap is tested using water with a pressure according to Point 12.3.8;
in check valves, using water or air with a pressure of 0.5 – 0.6 MPa.
-40-
Appendix No 1
Testing pressure is supplied in check valves above the flap, in sliding valves gradually from both
sides, or to the space of the body (between saddles).
The time of test should be at least 5 min. The test will be repeated after twofold opening and
closing the flap. The flap is relocated without pressure gradient on the flap.
The allowed leakage is according to Point 3.10. The tests shall be carried out using the relevant
definitive control equipment.
12.3.16 Each safety straight valve, including pulse valves IPU, must be tested for flap tightness and
opening and closing pressure. In electromagnetic valves, the function and tightness of the flap must
be tested with closed electromagnet.
Opening and closing pressure of the safety valve must meet the requirements of “AES Rules”.
Closing pressure (after opening the safety valve) is specified in TC on the basis of prototype tests.
Flow rate or loss coefficients must be determined on prototypes of safety valves according to the
methodology specified in schedule of prototype tests.
12.3.17 Functional tests of valves save the check valves shall be carried out with overpressure of
working medium inside the valve by carrying out five “open – close” cycles. The valve shall be
partially opened (slightly opened) three times, and fully opened two times. In sliding valves larger
than DN 400, it will be opened once. Each time the valve will be closed using the design torque.
If the valve with drive has additional manual control, two extra open-close cycles must be carried
out using the manual control. In sliding valves larger than DN 400 – once.
The functional tests of the valves with pneumatic drive shall be carried out under overpressure of
working medium in the valve by supply of control air into the drive.
Simultaneously with functional tests, it is necessary to carry out tests of remote signalling.
12.3.18 Functionality tests can be carried out according to special schedule approved by the
customer.
12.3.19 Tests of vacuum tightness of connections and materials against the environment in sealing
free valve intended for radioactive working media shall be carried out using helium.
Requirements for tightness and scope of tests are given in TC.
Before test, the internal surfaces of the body must be carefully cleaned and dried in order sensitivity
of measurement according to Class II of PK should be ensured.
12.3.20 The tests of tightness of the upper flap in sliding valves (it is present) shall be carried out
after two openings of the flap using the drive or by the torque specified in TC, in the table
corresponding to the specimen in Annex 3. Leakage of working medium through the upper flap is
not allowed.
12.3.21 The mentioned sequence of tests is recommended. The sequence shall be determined by
the manufacturer.
-41-
Appendix No 1
12.3.22 Functionality of the used bellows valves shall be proven by the selective tests of bellows
valves for confirmation of guaranteed service life (Txn) with the parameters listed in GOST 2174483 in accordance with the typical dimension of the bellows valve.
The tests shall be carried out in 3% of the production group (the bellows valves of one typical
dimension manufactured simultaneously using the same technological procedure from the material
of one heat), but minimum 2 pieces and maximum 5 pieces.
The tests of bellows valves for confirmation of guaranteed service life shall be carried out with the
number of cycles = 1.0 Txn.
The bellows valves must be vacuum tights according to Class III of tightness of PK.
12.3.23 The bellows valves and complete bellows valves shall be marked electrographically or by
stamping. The method is determined by the manufacturer’s technology.
12.3.24 On prototypes of the control valves, the flow rate coefficient KV is determined in t/hr along
with the control characteristic according to the methodology in the schedule of prototype tests.
-42-
Appendix No 1
13. INSTRUCTIONS FOR TRANSPORT AND STORAGE
13.1 The valve can be transported by any transportation vehicle for the arbitrary distance in such a
way the damage to the valves or packages should be eliminated.
13.2 The valves and completing parts must be stored at places protected against climatic and other
harmful effects (acids, caustic agents etc.). Temperature in the storage area and during transport
shall be stated by the customer in specification of the valve design. The conditions for transport and
storage et extreme temperatures are stated in TC.
Under these conditions, the valve in the undamaged package of the manufacturer must withstand
storage for the period of 12 months without new preservation. After expiration of 12 months, it
shall be preserved again, if necessary.
Date of preservation and time of its effect shall be stated in the accompanying documentation.
-43-
Appendix No 1
14. INSTRUCTIONS FOR OPERATION
14.1 The operating instructions for the valve must include the instructions for maintaining the valve
in standby for operation, preparation for operation, commissioning, possible failures and method of
their remedy. The operators must study the technical description and instructions for the use and
their knowledge must be tested.
14.2 It is forbidden to operate the valves without the technical and operation data card and
operating instructions.
14.3 In installation of the valve: It is recommended to secure the straight section of the pipeline
upstream and downstream the valve in a length of at least 5 x DN. It is necessary to ensure the
conditions for erection, inspections, operation and repairs.
14.4 When welding the valve to the pipeline, the flap must be slightly opened. At the same time, it
is necessary to protect the inner spaces of the valve and pipeline before penetration of dirt
originating during welding.
14.5 During commissioning and operation of the power plant, multiple pressurization of the valve
along with the equipment is allowed in accordance with the requirements of “AES Rules”, Part 8.2.
Frequency of pressurizing will be specified in TC.
14.6 Using the control valve as the regulation member is forbidden.
14.7 The control valve can be used as the closing valve only in case, if it is stated in TC for the
particular product.
-44-
Appendix No 1
15. SAFETY REQUIREMENTS
15.1 Installation, control, operation and repairs of the valves must meet “AES Rules”, “OPB-86”,
technical description, instructions for operation, safety instructions and other instructions existing
at NPP.
15.2 The personnel of NPP can carry out installation, operation, control and repairs of valves only
after familiarization with the aforementioned documents and verification of knowledge and
corresponding training.
15.3 In order to ensure occupational safety and health at work, it is FORBIDDEN:
15.3.1 To operate the valves with parameters higher than those specified in the technical
description and instructions for operation.
15.3.2 To carry out works for remedy of defects, to complete the packing seal at pressure of
working medium in the body or under voltage (drives, switches etc.).
15.3.3 To use the valve as a support for the equipment and pipelines.
15.3.4 To use extending levers in manual operation of the valve and to use nut wrench with a
dimension larger than the dimension of the connecting material.
15.3.5 To carry out work with the valve without personal protective equipment, failure to observe
fire, electro, radiation and hygienic regulations.
-45-
Appendix No 1
16. GUARANTEES
16.1.
The manufacturer shall guarantee that the manufactured valve and its assembling
parts correspond with the requirements of the technical specifications, providing that
the conditions for mounting, repairs, operation, transport, and storage given by the
technical specifications, operating instructions, and instructions for use be observed
by the customer.
16.2.
Providing that the customer observes the rules for transport, storage, mounting, and
operation according to the instructions of the manufacturer, the manufacturer of the
valve shall guarantee the quality and operational reliability of the valve for a period
of 12 months of the day of putting the valve into operation; however, no longer than
for a period of 33 months
− of the day of crossing the border – in export deliveries
− of the day of drawing a certificate on delivery – in national deliveries
-46-
Appendix No 1
17 OPERATING SUBSTANCES OF NUCLEAR POWER PLANTS WITH VVER
REACTORS
1.
Operating substance of a primary circuit
During power production of a unit:
pH value
> 5.7 ÷ 10.2
potassium concentration
0.05 ÷ 0.35 mg ekv/kg
ammonia concentration
over 5 mg/kg
hydrogen concentration
30 ÷ 60 Nml/kg
oxygen concentration
≤ 0.01 mg/kg
concentration of chlorides
≤ 0.1 mg/kg (0.15 mg/kg is admissible on a
short-term basis, maximally for a period of
24 hours)
boric acid concentration
no higher than 16 g/kg
activity
10-4 ÷ 10-1 Ci/l
concentration of corrosion products:
a) during steady-state operation
0.2 mg/kg
b) during transition states
1.0 mg/kg
During cooling the primary circuit and during fuel exchange:
2.
pH value
> 4.3
boric acid concentration
≤ 16 g/kg
concentration of chlorides
≤ 0.15 mg/kg
activity
10-8 ÷ 10-1 Ci/l
Steam-gas (steam-air) compound
A characteristic of a steam-gas compound is introduced in table No 5.
-47-
Appendix No 1
3.
4.
5.
6.
Acid (solution)
a) HNO3
≤ 60%
b) compound of
10 + 30 g/l H2C2O4 + 1 g/l HNO3 or
c) compound of
10 + 30 g/l H2C2O4 + 0.5 g/l H2O2
d) boric acid concentration
40 g/kg
e) activity
10-8 ÷ 10-3 Ci/l
Lye (solution)
a) NaOH
≤ 40% or
b) KOH
≤ 40% or
c) compound of
30 g/l NaOH + (2 ÷ 5) g/l KMnO4 or
d) ammonia
≤ 25%
e) activity
10-8 ÷ 10-3 Ci/l
Distillate (“pure” condensate)
total amount of salts
≤ 0.5 mg/kg
total hardness
≤ 3.0 mg ekv/kg
alkalinity
< 10 mg ekv/kg
content of chlorides
≤ 0.05 mg/kg
activity
10-11 ÷ 10-8 Ci/l
Pulp (for blow valves)
A compound of a distillate and filtration material (ion exchangers, active carbon, anthracite) in the
rate of 5 : 1, with a grain size of 0.5 ÷ 1.5 mm.
activity
7.
10-5 ÷10 Ci/l
Waste waters
pH value
5 ÷ 12
total hardness
≤ 1.0 mg ekv/kg
-48-
Appendix No 1
sheet 3/1
carbonate alkalinity
≤ 100 mg ekv/kg
bicarbonate alkalinity
≤ 5 mg ekv/kg
hydrate alkalinity
≤ 5 mg ekv/kg
oxidability
≤ 1000 mg/l KMnO4
content of free particles (including abrasive),
≤ 2% by weight
size 0.2 mm
8.
9.
activity
10-6 ÷ 10-2 Ci/l
concentration of chlorides
no higher than 100 mg/l
Salt concentrate
total amount of salts
400 g/l
sodium nitrate
160 ÷ 20 g/l
sodium oxalate
30 ÷ 60 g/l
sodium borate
40 ÷ 60 g/l
sodium carbonate
20 ÷ 50 g/l
sodium hydroxide
30 ÷ 60 g/l
organic matter
20 ÷ 40 g/l
free particles
5 ÷ 10 g/l
activity
10-3 ÷ 10 Ci/l
Oil
MT-22 type or GCN (turbine oil)
non-flammable oil (OKT1)
10.
Nitrogen (for primary circuit needs)
11.
Steam (from steam generators)
activity
10-12 ÷ 10-9 Ci/l
-49-
Appendix No 1
sheet 4/1
12.
13.
14.
15.
Condensate of a secondary circuit (feed water)
total hardness
3 mg ekv/kg
oxygen content
no higher than 200 mg/kg
content of chlorides
0.05 mg/kg
pH value
7
activity
10-10 ÷ 10-7 Ci/l
Lye (solution)
a) NaOH
≤ 40% or
b) KOH
≤ 40% or
c) compound of
30 g/l NaOH + (2 ÷ 5) g/l KMnO4
d) ammonia
≤ 25%
Wash water for steam generators
dissolved oxygen
not standardised
content of chlorine ions
< 0.5 mg/kg
hardness
< 50 mg ekv/kg
silicic acid
calculated per SiO3
< 5 mg/kg
iron oxides calculated
per Fe
not standardised
cuprous oxides calculated
per Cu
not standardised
free carbonic acid
not present
sodium
< mg/kg
pH value
10.5
Waste gases of a primary circuit after a system of hydrogen combustion
nitrogen
oxygen
-50-
Appendix No 1
sheet 5/1
ammonia
5%
Immixed mechanical particles are not abrasive; size of 70 µm.
In operating substances according to subparagraphs 1 – 5, 8 – 13, 14, the incidence of individual
non-abrasive particles of a size no higher than 100 µm is admitted.
16.
Technical water
pH value
6.0 ÷ 9.0
hardness
no higher than 10 mg ekv/l
chlorides
no higher than 300 mg/l
sulphates
no higher than 600 mg/l
nitrates
no higher than 15 mg/l
phosphates
no higher than 20 mg/l
oxidability
no higher than 20 mg O2/l
content of free particles
no higher than 50 mg/l
(periodically, for no more than 20 days per a year, maximally 500
mg/l)
total amount of salts
no higher than 2000 mg/l
temperature
no higher than 80°C
-51-
Appendix No 1
18 OPERATING SUBSTANCES OF NUCLEAR POWER PLANTS WITH A RBMK
REACTOR
1. Water of a multiple-stimulated circulation circuit
pH value
6.5 ÷ 8.0
specific electrical conductivity
0.5 ÷ 1.0 µS/cm
hardness
2 ÷ 10 µg ekv/kg
silicic acid
600 ÷ 1000 µg/kg
content of chlorine and fluorine ions
50 ÷ 100 µg/kg (in the course of every 1 000 hours of
operation, an increase to 150 µg/kg during 24 hours is
admitted)
products of iron corrosion
maximum 50 µg/kg
products of cuprum corrosion
15 ÷ 20 µg/kg
oxygen
0.05 ÷ 0.1 mg/kg
oils
100 ÷ 200 µg/kg
activity
10-5 ÷ 10-2 Ci/l
2. Feed water
pH value
7.0
specific electrical conductivity
maximum 0.1 µS/cm
products of iron corrosion
maximum 10 µg/kg
oxygen
no higher than 2 mg/kg
activity
no higher than 4.10-6 Ci/kg
3. Condensate
pH value
7.0
specific electrical conductivity
maximum 0.1 µS/cm
hardness
0.08 ÷ 0.2 µg ekv/kg
silicic acid
10 ÷ 20 µg/kg
content of chlorine and fluorine ions
2 ÷ 4 µg/kg
products of iron corrosion
maximum 5 µg/kg
products of cuprum corrosion
1 ÷ 2 µg/kg
oxygen
no higher than 0.2 mg/kg
activity
no higher than 10-5 Ci/kg
-52-
Appendix No 1
4. Cooling water of the SUZ circuit
pH value at 25°C
5.5 ÷ 6.5
content of chlorine ions
maximum 50 µg/kg
products of iron corrosion
maximum 10 µg/kg
products of aluminium corrosion
maximum 10 µg/kg
activity
2.10-4 ÷ 3.10-2 Ci/kg
5. Waste waters
pH value
4 ÷ 12
hardness
0.1 ÷ 0.2 mg ekv/l
hydration alkalinity
no higher than 12.5 mg ekv/l
nitrates
no higher than 94.5 mg ekv/l
carbonates
no higher than 26.4 kg ekv/l
sulphates
no higher than 7.0 mg ekv/l
phosphates
no higher than 2.0 mg ekv/l
chlorides
no higher than 30 mg ekv/l
synthetic detergents
100 ÷ 500 mg/l
thiourea
10 ÷ 25 g/l
activity
10-4 ÷ 10-3 Ci/kg
content of free particles
no higher than 2% by weight
6. Salt concentrate (sediments from evaporations)
sodium nitrate
287.2 g/l
potassium nitrate
60 g/l
sodium sulphate
20 g/l
calcium nitrate
18.8 g/l
sodium phosphate
4.0 g/l
-53-
Appendix No 1
sulfanol
0.5 g/l
total amount of salts
400 g/l
activity
10-2 ÷ 10-1 Ci/kg
content of free particles
5 ÷ 10 g/l
7. Acid
HNO3
5%
activity (after regeneration of filters)
10-2 Ci/kg
8. Lye
NaOH
5%
activity (after regeneration of filters)
10-2 Ci/kg
9. Radioactive gases
Air, hydrogen, nitrogen, helium, inert gases, and compounds of gases.
Activity:
a)
liquid nitrogen
2. 10-1 Ci/l
b)
gaseous nitrogen
10-3 Ci/l
c)
exhaust gases
3. 10-2 Ci/l
10. Deactivating solutions
Chemical compound of deactivating solutions see subparagraph 3.13 of OTT-87.
activity
10-5 ÷ 10-4 Ci/kg
11. Pulp
A compound of a distillate and filtration materials (ionites, permit) in the rate of 2 : 1, with a grain
size of 0.3 ÷ 2 mm.
activity
10-5 ÷10 Ci/l
-54-
Appendix No 1
12. Technical water
pH value
6.0 ÷ 9.0
hardness
no higher than 10 mg ekv/l
chlorides
no higher than 300 mg/l
sulphates
no higher than 600 mg/l
nitrates
no higher than 15 mg/l
phosphates
no higher than 20 mg/l
oxidability
no higher than 20 mg O2/l
content of free particles
no higher than 50 mg/l
(periodically, no more than 20 days
total amount of salts
no higher than 2000 mg/l
temperature
no higher than 80°C
-55-
a year, maximally 500 mg/l)
Appendix No 2
Changes of operating substance parameters in nuclear
installationswith a VVER-1000 reactor, valid for primary circuit
valves
Temperature
Range of change
Number of cycles
1
Pressure
Range of change
Initial,
Final,
°C
°C
2
3
°C/s
Initial,
Final,
MPa
MPa
5
6
7
4
1.
MPa/s
Normal operating conditions
1400
350
270
3.5
17.55
12.74
0.72
1400
270
350
2.0
15.69
17.55
0.17
100
350
40
0.0084
15.69
0.098
0.00074
100
350
40
0.0168
0.098
15.69
0.00148
50
130
20
100.0
5.883
5.883
0.0
25950
280
350
0.045
15.39
15.98
0.006
25950
350
280
0.045
15.98
15.39
0.006
130
40
280
0.0056
1.96
15.69
0.00043
appendix No 2 is used by the customer at filling an order for the construction of a valve
-56-
- 80 -
+)
Speed of change,
Speed of change,
Appendix No 2
1
2
3
4
5
6
7
30
50 ÷ 120
50 ÷ 120
0.0
1.96
24.52
0.016
100
50 ÷ 120
50 ÷ 120
0.0
1.96
19.61
0.016
2.
Failure of normal operating conditions
300
280
350
4.7
15.69
17.65
0.14
300
350
265
6.0
17.65
12.55
0.71
30
350
265
1.5
15.69
9.81
0.1
- 81 -
3. Emergency modes
53
350
100
0.77
15.69
0.098
0.19
1
350
100
12.5
15.69
0.098
1.58
8
350
100
0.086
15.69
9.806
0.009
17
350
260
1.25
15.69
11.77
0.903
3
350
270
0.9
19.4
15.39
0.17
Note: When calculating a valve, the highest total number of cycles in emergency modes equal to 60 shall be taken into account. At the same time,
the least favourable combination of modes it is required to be under consideration.
-57-
Appendix No 2
Changes of operating substance parameters for valves in nuclear
power plants with RBMK reactors operating at Pp = 8.6 ÷ 11.0 MPa
Temperature
Range of change
Number of cycles
Range of change
Speed of change,
Initial,
Final,
°C
°C
2
3
°C/s
Speed of change,
Initial,
Final,
MPa
MPa
5
6
7
4
1.
MPa/s
- 82 -
1
Pressure
Normal operating conditions
1500
40
285
0.0084
0.3
9.0
0.0003
1500
285
40
0.0084
9.0
0.3
0.0003
285
250
0.5
9.0
7.5
0.02
250
285
0.5
7.5
9.0
0.02
300
2. Failure of normal operating conditions
200
285
100
0.0168
9.0
0.3
0.0008
40
285
100
0.0336
9.0
0.3
0.0016
120
100
285
0.0084
0.3
9.0
0.0004
-58-
Appendix No 2
1
2
3
4
5
6
7
285
290
1.0
9.0
9.7
0.1
290
235
55.0
9.7
-
-
235
285
0.0084
-
7.3
0.04
20
285
100
0.067
9.0
0.3
0.0032
5
285
100
0.111
9.0
0.3
0.0052
150
285
40
jump change
8.5
8.5
0.0
150
40
285
jump change
8.5
8.5
0.0
10
285
285
0.0
9.0
7.0
2.0
285
50
70.0
7.0
2.5
0.15
285
285
0.0
9.0
7.5
0.75
285
150
1.0
7.5
-
-
150
50
20.0
-
2.5
0.0415
2.5
0.067
1
2
4.
3
50
50
Change in parameters of a SACR system
0.0
10.0
Note: The first mode in subparagraph 3 corresponds to input collector tearing, the second mode of subparagraph 3 to RGK tearing.
-59-
- 83 -
3. Emergency modes
Appendix No 2
Changes of operating substance parameters for valves in nuclear
power plants with RBMK reactors operating at Pp = 2.5 (4.0) MPa
Temperature
Range of change
Number of cycles
1
Pressure
Range of change
Speed of change,
Initial,
Final,
°C
°C
2
3
°C/s
Speed of change,
Initial,
Final,
MPa
MPa
5
6
7
4
1.
MPa/s
Normal operating conditions
1500
20
190
0.0084
0.1
1.2 (3.9)
0.0002;
jump change
1500
190
20
0.0084
1.2 (3.9)
0.1
0.0002;
jump change
- 84 -
2.
Failure of normal operating conditions
200
190
100
0.0168
1.2 (3.9)
1.2 (3.9); 0.1
0.0; 0.0007
40
190
100
0.0336
1.2 (3.9)
1.2 (3.9); 0.1
0.0; 0.0015
20
190
100
0.067
1.2 (3.9)
1.2 (3.9); 0.1
0.0; 0.003
5
190
100
0.111
1.2 (3.9)
1.2 (3.9); 0.1
0.0; 0.005
300
20
190
jump change
1.2 (3.9)
1.2 (3.9)
0.0
300
190
20
jump change
1.2 (3.9)
1.2 (3.9)
0.0
-60-
7
Type of control
8
Type and output of a drive
9
Closed, Nm
10
Opened, Nm
11
Torque size for sealing a closure
12
Number of revolutions of a spindle
for a full stroke of a valve
13
Time for opening or closing, maximum,
S
14
Tightness class of a closure according to
GOST 9544-75
15
Loss coefficient
16
Class and group of a valve
17
Weight, kg, maximum
18
Placing +)
Torque on a
spindle of a
valve
Appendix No 3
(Form)
6
Material of the body
Basic technical parameters and characteristics of block valves, lift
check valves, and check valves
Operating substance
Version
Maximum temperature of an operating
substance, °C
5
- 85 -
+)
An admissible placing of a valve shall be introduced:
Attended premises – P, boxes – B,
under the containment (hermetic zone) – O.
-61-
Operating overpressure Pp, MPa
4
22
Notes
Nominal clear span, DN
3
21
Modification type of the end
for a weld
Designated version
2
20
Diameter of a socket borehole
end , Dr, mm
1
19
Attached tube, D x s, mm
8
Orifice coefficient Kv max (at full
opening), ± 10%, t/hour
9
Minimum controllable flow at
maximum pressure gradient, t/hour
10
Regulating characteristic
11
Material of the body
12
Type and output of a drive
13
Maximum torque on the spindle of
a valve
14
Number of revolutions of a spindle
for a full stroke of a valve
15
Full-stroke time , S
16
Class and group of a valve
Version
Appendix No 3
(Form)
7
Admissible penetration through a
closure at closed valve and
maximum pressure gradient
Basic technical parameters and characteristics of regulating valves
Admissible pressure gradient
∆ P; MPa
+)
An admissible placing of a valve shall be introduced:
Attended premises – P, boxes – B,
under the containment (hermetic zone) – O.
- 86 -
-62-
Operating substance
6
22
Notes
Maximum temperature of an
operating substance, °C
5
21
Modification type of the end for a
weld
Operating overpressure Pp, MPa
4
20
Diameter of a socket borehole end ,
Dr, mm
Nominal clear span, DN
3
19
Attached tube, D x s, mm
Designated version
2
18
Placing +)
1
17
Weight, maximum, kg
7
Operating substance
8
Full-opening pressure (spring-controlled),
MPa
9
Closing pressure, MPa
10
Maximum admissible counter pressure in
a valve outlet, MPa
11
Orifice coefficient, minimum
12
Seating diameter, mm
13
Closed by a spring
14
Opened by an
electromagnet
15
Material of the body
16
Class and group of a valve
17
Weight, kg, maximum
18
Placing +)
Appendix No 3
(Form)
6
Maximum temperature of an operating
substance, °C
Basic technical parameters and characteristics of check valves and
pulse check valves
Operating overpressure, Pp, MPa
Maximum
admissible
penetration
through a
seating at
operating
overpressure,
cm3/min
Valve type (straight way, angle)
5
- 85 -
+)
An admissible placing of a valve shall be introduced:
Attended premises – P, boxes – B,
under the containment (hermetic zone) – O.
-63-
Input / output diameter, mm
4
22
Notes
Nominal clear span, DN
3
21
Modification type of the end
for a weld
Designated version
2
20
Diameter of a socket borehole
end , Dr, mm
1
19
Attached tube, D x s, mm
Appendix No 4
Load of valve sockets from high-pressure and low-pressure pipes
made of anti-corrosive and carbon steel in nuclear power plants
with VVER and RBMK reactors
Annotation
1. The classification of load is performed according to the “Strength calculation standards of installations and pipes in nuclear power plants
with water reactors at seismic load”.
NUE
-
load induced by normal operating conditions
PZ
-
load induced by design earthquake
MRZ
-
load induced by the highest calculating earthquake
AS
-
load induced by an emergency situation (tearing of a connected pipe)
2. Load designation:
Mv, Fv
-
torques and forces induced by the pipe weight
Mr, Fr
-
angle of oscillation of torques and forces under the influence of temperature
compensation of a pipe
Mpz, Fpz
-
torques and forces induced by a concurrent influence of the pipe weight and design
earthquake
Mmz, Fmz
-
torques and forces induced by a concurrent influence of the pipe weight and maximum
calculating earthquake
Mos
-
torques induced by a concurrent influence of the pipe weight and reactive forces
originated at pipe tearing
3. When assessing the fatigue strength, the calculating number of load change cycles under the influence of temperature compensation of a
pipe (angle of oscillation of torques and forces) for a period of service life of the body equal to 2 000 shall be taken into account.
-64-
Appendix No 4
4. The angle of oscillation of torques and forces induced by design earthquake shall be determined from the following equations:
Mrpz = 2 (Mpz – 0.2 . Mv)
Frpz = 2 (Fpz – 0.2 . Fv)
5. Emergency situations shall only be taken into consideration in quick-acting separating valves.
6. A direction of vectors in torques is optional. Forces act in the direction of valve sockets. The point of action in torques and forces is in the
site of connecting the pipe to the valve.
7. When determining angles of oscillation and amplitudes of reduced voltages, the value of zero shall be taken into account as a minimal
value.
8. According to ČSSR and SFRJ standards, the valves designated for welding to tubes 108 x 12, 133 x 14, 159 x 17, 245 x 18, 273 x 25, 377
x 36 correspond with nominal clear spans DN 100, 125, 150, 225, 250, and 350, and shall be designated as 80/100, 100/125, 125/150,
200/250, 225/250, 300/350. Here and further, for determining the building and mating dimensions, the lower DN from both diameters shall
be considered as the nominal clear span according to
-65-
Appendix No 4
Loading of sleeve fittings for high-pressure piping from noncorrosive steel of the 08CH18N10T brand
Pp=18.0 MPa
Pp=20.0 MPa
T=350°C
T=300°C
Category of loading, unit
Item no.
1
1
2
3
4
5
6
7
8
9
10
11+)
12+)
13+)
Nominal
clearance
DN
2
10
15
25
32
50
65
80
100
125
150
225
300
300
+)
Dxs
mm
3
14x2
18x2.5
32x3.5
38x3.5
57x5.5
76x7
89x8
108x12
133x14
159x17
273x25
377x36
351x36
NUE
Mv
kpm
4
2,04
4,26
18,7
25,3
95,1
184
293
612
1110
1930
8040
24100
22600
NUE
(oscillati
on
moment)
Mr
kpm
5
4,85
10,2
46,8
66
244
496
790
1590
2910
5040
22100
64000
58000
NUE
Fv
kp
6
40
60
137
178
327
503
637
852
1160
2520
3420
5560
4990
NUE
(oscillati
on of
forces)
Fr
kp
7
96
145
343
464
839
1360
1720
2210
2240
3970
9390
14800
12800
NUE + PZ
Mpz
kpm
NUE + PZ
Fpz
kp
8
2,62
5,5
24,6
34,2
126
250
397
815
1490
2580
10970
32400
29900
9
50
72,4
171
223
408
629
798
1060
1455
1902
4280
6950
6250
For items 11,12,13 loading is mentioned only for values of parameters Pp=MPa, T=350°C.
-66-
NUE +
MRZ
Mmz
kpm
10
3,0
0,3
28,1
40
124
293
466
951
1740
3010
12900
37900
34800
NUE+MR
Z
Fmz
kp
NUE + AS
at Pp=0,
Mas
kpm
11
56
82
195
252
463
712
903
1210
1650
2160
4850
7870
7070
12
3,02
6,33
30,2
44,8
159
335
534
1040
1910
3300
14900
42000
37100
Appendix No 4
Loading of sleeve fittings for high-pressure piping from noncorrosive steel of the 08CH18N10T brand
Pp=14,0 MPa
T=335°C
Category of loading, unit
Item no.
1
1
2
3
4
5
6
7
8
9
10
11
12
13
Nominal
clearance
DN
2
10
15
25
32
50
65
80
100
125
150
225
300
300
Dxs
mm
3
14x2
18x2,5
32x3,5
38x3,5
57x5,5
76x7
89x8
108x9
133x11
159x13
245x19
273x20
325x24
NUE
Mv
kpm
4
2,2
4,6
20,7
28,9
106
211
336
484
943
1560
5540
7750
13500
NUE
(oscillation
moment)
Mr
kpm
5
5,07
10,6
49,4
71,2
259
531
847
1274
2460
4110
14700
20500
35500
NUE
Fv
kp
6
39,8
58,0
137
178
327
503
637
852
1160
1520
2910
3420
4450
NUE
(oscillation
of forces)
Fr
kp
7
91,7
131
327
433
1230
1275
1600
2240
3030
4000
7720
9080
11700
-67-
NUE + PZ
Mpz
kpm
NUE + PZ
Fpz
kp
8
9
2,8
5,8
26,6
37,7
138
278
442
649
1260
2090
7450
10400
18000
49,7
72,5
172
222
408
629
796
1065
1460
1900
3640
4280
5560
NUE +
MRZ
Mmz
kpm
10
3,18
6,67
30,6
43,5
159
322
513
759
1470
2440
8720
12200
21100
NUE+MRZ
Fmz
kp
11
56,3
82,1
195
252
463
712
903
1210
1650
2160
4120
4350
6800
NUE +
AS at
Pp=0,
Mas
kpm
12
3,07
6,44
30,7
45,6
162
341
544
849
1320
2720
9730
13500
23200
Appendix No 4
Loading of sleeve fittings for high-pressure piping from noncorrosive steel of the 08CH18N10T brand
Pp=9,2 MPa
T=290°C
Category of loading, unit
Item no.
1
1
2
3
4
5
6
7
8
9
10
11
12
Nominal
clearance
DN
2
10
15
25
32
50
65
80
100
125
150
200
300
Dxs
mm
3
14x2
18x2,5
32x3,5
18x3,5
57x4
76x4,5
89x5
108x7
133x8
159x9
219x12
325x16
NUE
Mv
kpm
4
2,46
5,16
23,8
34,1
90,1
165
252
412
736
1320
3037
9200
NUE
(oscillation
moment)
Mr
kpm
5
5,51
11,6
54,4
79,2
215
410
631
690
1890
3370
7940
24600
NUE
Fv
kp
6
40
60
137
178
327
503
637
852
1160
1520
2460
4450
NUE
(oscillation
of forces)
Fr
kp
7
89,5
134
313
413
781
1250
1590
1430
2982
3880
6640
11900
Note: Fittings and parameters are checked for the loading Pp=11MPa, T=300°C
-68-
NUE + PZ
Mpz
kpm
NUE + PZ
Fpz
kp
8
2,12
6,47
30,1
43,4
116
216
331
545
978
1750
4060
12450
9
50
72
172
222
408
629
796
1065
1450
1900
3075
5560
NUE +
MRZ
Mmz
kpm
10
3,5
7,35
34,3
49,6
133
250
383
634
1138
2030
4750
14600
NUE+MRZ
Fmz
kp
11
56
82
195
252
463
712
903
1210
1650
2160
3480
6300
NUE +
AS at
Pp=0,
Mas
kpm
12
3,23
6,77
32,3
48
134
265
409
689
1240
2190
5260
16400
Appendix No 4
Loading of sleeve fittings for high-pressure piping from noncorrosive steel of the 08CH18N10T brand
Pp=4,0 MPa
T=250°C
Category of loading, unit
Item no.
Nominal
clearance
DN
Dxs
mm
1
1
2
3
4
5
6
7
8
9
10
11
12
13
2
10
15
25
32
50
65
80
100
125
150
200
250
300
3
14x2
18x2,5
32x3,5
38x3,5
57x4
76x4,5
89x5
108x5
133x6
159x6,5
220x8
273x11
325x12
NUE
Mv
kpm
4
2,55
5,39
25,7
37,6
104
149
229
273
519
780
1680
4160
5830
NUE
(oscillation
moment)
Mr
kpm
5
52,5
12,7
50,4
83,2
232
213
332
384
762
1190
2270
5590
8400
NUE
Fv
kp
6
63
81
147
171
256
342
400
486
598
716
990
1230
1460
NUE
(oscillation NUE + PZ
Mpz
of forces)
Fr
kpm
kp
7
8
136
3,26
176
6,69
282
32
378
47
510
130
488
183
578
281
683
336
879
639
1095
960
1340
2070
1690
5120
2110
7180
-69-
NUE + PZ
Fpz
kp
NUE +
MRZ
Mmz
kpm
NUE+MRZ
Fmz
kp
9
77
99
176
209
314
418
490
594
732
875
1210
1500
1790
10
3,56
7,75
36,1
53,1
147
206
317
378
719
1080
2320
5760
8080
11
88,2
113
202
239
359
479
561
680
838
1000
1390
1720
2050
NUE +
AS at
Pp=0,
Mas
kpm
12
3,23
6,77
32,3
48
134
265
409
590
897
1240
3330
7620
12100
Appendix No 4
Loading of sleeve fittings for high-pressure piping from noncorrosive steel of the 08CH18N10T brand
T=250°C +)
Pp=2.5 MPa
Category of loading, unit
Item no.
Nominal
clearance
DN
Dxs
mm
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
2
10
15
25
32
50
65
80
100
125
150
200
200
250
300
400
500
600
600
3
14x2
18x2,5
32x2,5
38x3
57x3
76x4,5
89x5
108x5
133x6
159x6
219x11
220x7
273x11
325x12
426x8
530x8
630x8++)
630x12
+)
NUE
Mv
kpm
4
2,48
5,35
17,5
31
72,7
182
233
280
560
712
2680
1365
3720
6160
2280
2520
3440
7350
NUE
(oscillation
moment)
Mr
kpm
5
5,34
11,5
38,4
68
161
405
345
398
786
1020
3730
1869
4930
8580
5000
7670
9860
16500
NUE
Fv
kp
6
63
81
144
171
257
342
400
486
599
716
990
990
1230
1460
1920
2380
2830
2830
NUE
(oscillation NUE + PZ
Mpz
of forces)
Fr
kpm
kp
7
8
135
3,07
175
6,61
316
21,8
375
38,6
568
90,7
761
227
594
287
681
344
839
690
1030
876
1370
3300
1360
1680
1630
4570
2030
7580
4210
2800
7250
3110
8110
4230
6350
9050
NUE + PZ
Fpz
kp
NUE +
MRZ
Mmz
kpm
NUE+MRZ
Fmz
kp
9
77
99
176
209
314
418
490
594
732
874
1200
1210
1500
1790
2340
2910
3460
3460
10
3,46
7,45
24,7
43,6
103
258
323
387
770
985
3710
1890
5150
8530
3150
3500
4760
10200
11
88,2
113
202
239
359
479
561
680
838
1000
1380
1390
1720
2050
2680
3340
3970
3970
For parameters of the working substance Pp= 2.5 MPa, T=250°C permitted values of moments on the fitting sleeves are stated in TP.
Pp=1,6MPa, T=200°C
++)
-70-
NUE +
AS at
Pp=0,
Mas
kpm
12
3,07
6,53
20,9
37,9
88,9
220,5
346
576
828
1170
4830
3120
7150
11200
12200
17600
27000
43300
Appendix No 4
Loading of sleeves for high-pressure piping from carbon steel St 20
Pp=12,0 MPa
Pp=8,6 MPa
T=250°C
T=300°C
Category of loading, unit
Item no.
Nominal
clearance
DN
Dxs
mm
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
2
10
25
32
50
80
100
125
150
200
250
300
400
500
600
3
16x2
32x3
38x3
57x3,5
89x6
108x6+)
133x8
159x9
219x13
273x16
325x19
426x24
530x28++)
630x25+++)
NUE
Mv
kpm
4
2,75
18,5
25,4
64,8
307
346
718
1290
3640
6860
12000
25800
61800
66100
NUE
(oscillation
moment)
Mr
kpm
5
3,47
44,6
63,1
170
770
964
1950
3470
9640
18300
31700
69000
121000
172000
NUE
Fv
kp
6
49
138
178
327
637
852
1160
1520
2460
3424
4450
6670
9260
12000
NUE
(oscillation
of forces)
Fr
kp
7
114
330
442
859
1610
2370
3160
4090
6920
9120
11800
17800
18100
31200
+)
For tube 108x6; p≤8,6MPa, T≤300°C
15 GS, Pp=12,0MPa, T=250°C, [ϭN]-1650kp/cm2
+++)
16 GS, Pp=8,6MPa, T=300°C, [ϭN]-1340kp/cm2
++)
-71-
NUE +
PZ
Mpz
kpm
NUE +
PZ
Fpz
kp
NUE +
MRZ
Mmz
kpm
NUE+MRZ
Fmz
kp
8
3,51
23,9
33,3
87
405
479
978
1750
4900
9250
16100
34800
82000
88800
9
60,7
172
222
408
796
1065
1450
1900
3070
4280
5560
8340
11600
15000
10
4,02
27,5
38,5
102
469
564
1150
2050
5730
10800
18800
40800
95500
104000
11
69
195
252
463
903
1207
1650
2160
3480
4850
6300
9450
13100
17000
NUE +
AS at
Pp=0,
Mas
kpm
12
4,0
28,1
41
115
5000
677
1340
2340
6400
12200
20900
45800
101000
116000
Appendix No 4
Loading of sleeves for high-pressure piping from carbon steel St 20
Pp=6,0 MPa
T=275°C
Category of loading, unit
Item no.
Nominal
clearance
DN
Dxs
mm
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
2
10
25
32
50
65
80
100
125
150
200
250
300
350++)
400++)
450++)
3
16x2
32x3
38x3
57x4
76x4
89x4(6)+)
108x6
133x4,5
159x7
219x9
273x10
325x13
377x13
426x14
465x16
+)
NUE
Mv
kpm
4
2,81
19,8
28,1
75,6
129
206
262
372
827
2260
3920
7860
10400
14300
19600
NUE
(oscillation
moment)
Mr
kpm
5
6,41
44,8
64,3
177
314
503
602
1015
1912
5400
10300
19700
27500
38100
51600
NUE
Fv
kp
6
48,6
137
178
325
503
637
852
1160
1522
2460
3420
4450
5560
6670
7610
NUE
(oscillation
of forces)
Fr
kp
7
109
310
407
766
1220
1560
1960
3180
3520
5880
8980
11400
11700
17800
20100
For tube 89x4 – p=4,0 MPa, T=200°C
For tubes 377x13, 426x14, 465x16 – Pp=4,0MPa, T=200°C
++)
-72-
NUE + PZ
Mpz
kpm
NUE +
PZ
Fpz
kp
NUE +
MRZ
Mmz
kpm
NUE+MRZ
Fmz
kp
NUE + AS
at Pp=0,
Mas
kpm
8
3,6
24,9
35,5
96,7
168
268
349
508
1103
3010
5880
10200
13700
19300
26300
9
60,7
172
222
408
628
797
1060
1460
1900
3070
4280
5560
6940
8340
9510
10
4,08
28,4
40,5
111
193
310
407
600
1290
3500
6160
11900
16400
22600
30800
11
68,8
195
252
463
712
903
1207
1650
2160
3480
4850
6300
7870
9450
10780
12
3,82
26,7
39
110
203
324
460
725
1450
3870
6960
12900
18400
25600
34400
Appendix No 4
Loading of sleeves for high-pressure piping from carbon steel St 20
Pp=2,5 MPa
T=250°C
Category of loading, unit
Item no.
Nominal
clearance
DN
Dxs
mm
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
2
10
15
25
32
50
65
80
100
125
150
200
250
300
350
400
500
600
3
14x2
18x2
32x2
38x2
57x3
76x3
89x3,5
108x4
133x4
159x5
219x7
273x8
325x8
377x9
426x9
530x8+)
630x8+)
+)
NUE
Mv
kpm
4
2,32
4,20
14,0
19,7
53,3
93,6
116
141
173
494
625
1400
1580
2520
3150
2100
2390
NUE
(oscillation
moment)
Mr
kpm
5
4,9
8,5
30,8
43,9
122
217
152
207
294
697
1120
2200
3300
5020
6940
6050
8620
NUE
Fv
kp
6
63
81
144
171
256
342
400
486
590
716
986
1230
1460
1700
1920
2380
2840
NUE
(oscillation
of forces)
Fr
kp
7
136
176
317
381
579
792
525
713
1010
1010
1770
1930
3050
3260
3860
6860
8470
NUE + PZ
Mpz
kpm
NUE +
PZ
Fpz
kp
NUE +
MRZ
Mmz
kpm
NUE+MRZ
Fmz
kp
NUE + AS
at Pp=0,
Mas
kpm
8
2,88
5,09
17,5
24,8
68,4
119
143
174
213
608
770
1720
1950
3220
4250
2530
3550
9
77
99
176
209
275
418
490
594
732
875
1200
1500
1790
2070
2340
2910
3460
10
3,24
5,73
?9,8
?8,1
77,2
136
161
196
239
684
866
1930
2190
3530
4780
2010
4000
11
88
113
202
239
359
479
561
680
839
1000
1380
1720
2050
2330
2680
3340
3970
12
2,90
5,12
17,6
24,9
67,6
119
159
290
434
760
2550
5240
7890
4200
14100
19500
26800
For tubes 530x8 a 630x8 – Pp = 1.6 MPa, T=200°C
Note: For tubes 720x8, 820x9, 920x10, 1020x10, 1420x14 for parameters Pp=1.6MPa, T=200°C a for tubes 1220x11, 1620x14 for parameters
Pp=1.0MPa, T=200°C the producer fittings states the permitted values of moments on sleeves in TP.
-73-
Appendix No 4
18
600
630x12
4770
12400
2840
7360
-74-
5880
3460
6?10
3970
43000
Appendix No 5
Modification of welding of the ends of piping from stainless steel
with fittings in the nuclear power plant with VVER reactors
Working overpressure of the working medium
Seq. no.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Nominal
clearance DN
10
15
25
32
50
65
80
80
100
100
125
150
125
200
200
250
300
300
400
500
600
600
+))
Pp=20.0 MPa
Tube
D x s,
mm
14x2
18x2,5
32x3,5
38x3,5
57x5,5
76x7
89x8
108x12
133x14
159x17
273x25
377x36
351x36+))
-
Pp=18.0 MPa
Turning over
inside
diameter,
mm
10+0,3
13+0,3
25+0,3
31+0,3
46+0,3 -0,2
63+0,5
74+0,5
88+0,23
109+0,23
130+0,26
230+0,6
312+0,68
283+0,34
-
Pp=14.0 MPa
Type of
modification
according to
OP
I-23
I-23
I-23
I-23
I-42a
I-42
I-42
I-42
I-42
C-42
I-42
?-42
?-42
-
On special order
-75-
Tube
D x s,
mm
Turning over inside
diameter,
mm
14x2
18x2,5
32x3,5
38x3,5
57x5,5
76x7
89x8
108x9
133x11
159x13
245x19
273x20
325x24
-
10
13
25+0,14
31+0,17
46
63+0,5
74+0,5
93+0,23
114+0,23
137+0,26
212+0,3
236+0,3
280+0,34
-
Type of
modificatio
n according
to OP
I-23
I-23
I-23
I-23
I-42a
I-42
I-42
I-42
I-42
I-42
I-42
I-42
I-42
-
Note
Appendix No 5
Working overpressure of the working medium
Seq. no.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Nominal
clearance DN
10
15
25
32
50
65
80
80
100
100
125
150
125
200
200
250
300
300
400
500
600
600
Pp=9,2 MPa
Tube
D x s,
mm
14x2
18x2,5
32x3,5
38x3,5
57x4
76x4,5
89x5
108x7
133x8
159x9
219x12
325x16
-
Turning over
inside
diameter,
mm
10
13
25+0,14
31+0,17
49
67+0,5
79+0,5
97+0,23
120+0,23
143+0,26
199+0,3
297+0,34
-
Pp=4.0 MPa
Type of
modificatio
n according
to OP
I-23
I-23
I-23
I-23
I-42a
I-42a
I-42a
I-42
I-42
I-42
I-42
I-42
-
-76-
Tube
D x s,
mm
Turning over inside
diameter,
mm
14x2
18x2,5
32x3,5
38x3,5
57x4
76x4,5
89x5
108x5
159x6,5
233x6
220x8
273x11
325x12
-
10
13
25+0,14
31+0,17
49
67+0,5
79+0,5
100+0,23
149+0,26
124+0,23
208+0,3
255+0,3
305+0,4
-
Type of
modificatio
n according
to OP
I-23
I-23
I23
I-23
I-42a
I-42a
I-42a
I-42
I-42
I-42
I-42
I-42
I-42
-
Note
Appendix No 5
Working overpressure of the working medium
Seq. no.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Nominal
clearance DN
10
15
25
32
50
65
80
80
100
100
125
150
125
200
200
250
300
300
400
500
600
600
Pp≤2,5 MPa
Tube
D x s,
mm
14x2
18x2,5
32x2,5
38x3
57x3
76x4,5
89x5
108x5
133x6
159x6
220x7
219x11
273x11
325x12
426x8
530x8
630x8
630x12
Turning over
inside
diameter,
mm
10,5
13,5
28
33
52
69
81
99+0,46
124+0,53
150+0,53
209+0,6
200+0,6
255+0,6
305+0,68
412+0,78
516+0,9
616+0,9
608+0,9
-77-
Type of
modification
according to
OP
I-23
I-23
I-23
I-23
I-42a
I-42a
I-42a
I-22
I-42
I-42
I-42
I-42
I-42
I-42
I-24
I-24
I-24
I-24
P Note
Appendix No 5
Working overpressure of the working medium
Seq.
no.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
x)
Nominal
clearance
DN
10
15
25
32
50
65
80
80
100
100
125
150
200
250
300
300
350
350
400
500
600
600
Pp=12 MPa Pp=8.6 MPa
Tube
D x s,
mm
16x2
32x3
38x3
57x4
89x6
108x6x)
108x8
133x8
159x9
219x13
273x16
325x19
426x24
530x28
630x25x)
-
Pp=6,0 MPa
Diameter do,
mm
Type of
modifica
tion
accordin
g to OP
Tube
D x s,
mm
Diameter do,
mm
Type of
modificati
on
according
to OP
12+0,3
26+0,52
32+0,62
49+0,62
77+0,46
97+0,54
98+0,54
119+0,54
142+0,63
195+0,72
244+0,72
290+0,81
382+0,89
480+0,97
582+0,97
-
I-22
I-23
I-23
I-23
I-23
I-23
I-23
I-25
I-25
I-25
I-25
I-25
I-25
I-25
I-25
-
16x2
32x3
38x3
57x4
76x4
89x4xx)
89x4
108x6
133x6,5
159x7
219x9
273x10
325x13
377x13
426x14
630x25
630x17xx)
12+0,43
26+0,52
32+0,62
49+0,62
68+0,46
81+0,54
77+0,46
97+0,54
122+0,63
148+0,63
204+0,72
256+0,81
303+0,81
354+0,89
401+0,97
582+0,97
598+0,97
I-22
I-23
I-23
I-23
I-23
I-23
I-23
I-23
I-23
I-25
I-25
I-25
I-25
I-25
I-25
I-25
I-25
Úprava pro svar je určena pro Pp 8,6 MPa
Úprava pro svar je určena pro Pp 3,92 MPa
xx)
-78-
Appendix No 5
Working overpressure of the working medium
Seq.
no.
23
24
25
26
27
28
29
30
Nominal
clearance
DN
450
700
800
900
1000
1100
1200
1600
Pp=12 MPa Pp=8.6 MPa
Tube
D x s,
mm
-
Pp=6,0 MPa
Diameter do,
mm
Type of
modifica
tion
accordin
g to OP
Tube
D x s,
mm
Diameter do,
mm
Type of
modificati
on
according
to OP
-
-
-
-
-
-79-
Appendix No 5
Working overpressure of the working medium
Seq.
no.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Nominal
clearance
DN
10
15
25
32
50
65
80
80
100
100
125
150
200
250
300
300
350
350
400
500
600
600
450
700
Pp=12 MPa Pp=8.6 MPa
Tube
D x s,
mm
16x2
32x3
38x3
57x4
76x4
89x4
108x6
133x6,5
159x7
219x9
273x10
325x13
377x13
426x14
630x17
465x16
720x22
Pp=6,0 MPa
Diameter do,
mm
Type of
modifica
tion
accordin
g to OP
Tube
Dxs
mm
Diameter do,
mm
Type of
modificati
on
according
to OP
12+0,43
+0,52
26
32+0,62
49+0,62
68+0,46
81+0,54
97+0,54
119+0,63
148+0,63
204+0,72
256+0,81
303+0,81
354+0,89
401+0,97
598+0,97
437+0,97
678+0,97
I-22
I-23
I-23
I-23
I-23
I-23
I-23
I-23
I-25
I-25
I-25
I-25
I-25
I-25
I-25
I-25
I-25
14x2
18x2
32x2
38x2
57x3
76x3
89x3,5
104x4
133x4
159x5
219x7
273x8
325x8
377x9
426x9
530x8
630x12
630x8
720x8
11+0,18
15+0,18
29+0,21
35+0,25
52+0,3
71+0,3
+0,35
84
102+0,35
127+0,4
151+0,4
208+0,46
259+0,52
311+0,52
361+0,57
410+0,63
516+0,7
608+0,7
616+0,7
706+0,8
I-22
I-22
I-22
I-22
I-23
I-23
I-23
I-23
I-23
I-23
I-24-I
I-24-I
I-24-I
I-24-I
I-24-I
I-24-I
I-24-I
I-24-I
I-17
-80-
Appendix No 5
Working overpressure of the working medium
Seq.
no.
25
26
27
28
29
30
Nominal
clearance
DN
800
900
1000
1200
1400
1600
Pp=12 MPa Pp=8.6 MPa
Tube
D x s,
mm
-
Pp=6,0 MPa
Diameter do,
mm
Type of
modifica
tion
accordin
g to OP
Tube
Dxs
mm
Diameter do,
mm
Type of
modificati
on
according
to OP
-
-
820x9
920x10
1020x10
1220x11
1420x14
1620x14
804+0,9
902+0,9
1002+1,0
1201+1,0
1395+1,0
1595+1,0
I-17
I-17
I-17
I-17
I-17
I-17
-81-
Appendix No 5
Modification of welding of the ends of piping from stainless steel
with fittings in the nuclear power plant with RBMK reactors
Working overpressure of the working medium
Seq.
no.
Nominal
clearance
DN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
10
15
25
32
40
50
65
80
100
125
150
200
225
250
300
400
500
600
800
Pp=11,0 MPa, Pp=9,2 MPa
Tube
D x s,
mm
14x2
18x2,5
32x3,5
32x3,5
57x4
76x4,5
89x5
108x7
133x8
159x9
219x12
325x16
-
Turning
over inside
diameter,
mm
10+0,3
13+0,3
25+0,3
31+0,5
+0,3 -0,2
50
68+0,3 -0,2
80+0,3 -0,2
97+0,23
120+0,23
143+0,26
199+0,3
297+0,34
-
Pp=4,0 MPa
Type of
modificatio
n according
to OP
Tube
D x s,
mm
C-23
C-23
C-23
C-23
C-42a
C-42a
C-42a
C-42
C-42
C-42
C-42
C-42
-
14x2
18x2,5
32x3,5
38x3,5
57x4
76x4,5
89x5
108x5
133x6
159x6,5
220x8
273x11
325x12
-
Turning
over inside
diameter,
mm
10+0,3
13+0,3
25+0,3
31+0,5
+0,3 -0,2
50
68+0,3 -0,2
80+0,3 -0,2
100+0,23
124+0,23
149+0,26
208+0,3
255+0,3
305+0,34
-
-82-
Pp<4,0 MPa
Type of
modification
according to
OP
Tube
D x s,
mm
C-23
C-23
C-23
C-23
C-42a
C-42a
C-42a
C-42
C-42
C-42
C-42
C-42
C-42
-
14x2
18x2,5
32x2,5
38x3
57x3
76x4,5
89x5
108x5
133x6
159x6
220x7
273x11
325x12
420x8
530x8
630x8
820x10
Turning over
inside
diameter,
mm
10,5
13,5
28,0
33,0
52,0
68+0,3 -0,2
80+0,3 -0,2
99,0
124+0,53
150+0,56
209
255+0,6
305+0,68
412+0,76
516+0,9
616+0,9
803+1,1
Type of
modification
according to
OP
C-23
C-23
C-23
C-23
C-42a
C-42a
C-42a
C-42
C-42
C-42
C-42
C-42
C-42
C-24
C-24
C-24
C-17
Appendix No 5
Modification of welding of the ends of piping from carbon steel
with fittings in the nuclear power plant with RBMK reactors
Working overpressure of the working medium
Seq.
no.
Nominal
clearance
DN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
10
15
25
32
40
50
65
80
100
125
150
200
225
250
300
400
500
600
800
Pp=11,0 MPa, Pp=9,2 MPa
Tube
D x s,
mm
16x2
32x3
38x3
57x3,5
89x6
108x6
133x8
159x9
219x13
273x16
325x19
426x24
530x28
630x25
-
Turning
over inside
diameter,
mm
+0,46
97
119+0,46
142+0,53
195+0,6
244+0,6
290+0,68
382+0,76
480+0,76
582+0,9
-
Pp=4,0 MPa
Type of
modification
according to
OP
Tube
D x s,
mm
C-22
C-22
C-22
C-42a
C-42a
C-23
C-29
C-29
C-29
C-29
C-29
C-29
C-29
C-29
-
76x3,5
89x4
108x4,5
133x5
159x7
219x9
273x10
325x13
426x14
630x12
-
Turning
over inside
diameter,
mm
100+0,46
125+0,3
148+0,53
204+0,6
256+0,6
303+0,68
401+0,76
607+0,9
-
-83-
Pp<4,0 MPa
Type of
modificatio
n according
to OP
Tube
D x s,
mm
C-42a
C-42a
C-23
C-23
C-29
C-29
C-29
C-29
C-29
C-24
-
14x2
18x2
32x2
38x2
57x3
76x3
89x3,5
108x4
138x4
159x5
219x7
273x8
325x8
426x9
530x8
630x8
8?0x9
Turning over
inside
diameter,
mm
11
15
29
35
52
71
84
102
127
151
208+0,6
259+0,6
311+0,68
410+0,76
516+0,9
616+0,9
804+1,0
Type of
modification
according to
OP
C-23
C-23
C-23
C-23
C-42a
C-42a
C-42a
C-23
C-23
C-23
C-24
C-24
C-24
C-24
C-24
C-24
C-17
Appendix No. 6
Passport for fitting (type)
Permit for production No.________of______________________________________
issued by___________________________________________________________
(name of body issuing the permit)
Indication of product__________________ drawingNo._______________________
technical conditions No. TP_____________________________________________
Serial No._________________ product produced on _________________________
in_________________________________________________________________
(business name and address of producer)
1) Description of the product x) 1
Class and group______________________________________________________
Nominal clearance____________________________________________________
Working medium______________________________________________________
Design (maximum working) overpressure__________________________________
Design temperature___________________________________________________
Drive__________________________, drawing No.__________________________
Variant of the drive____________________________________________________
Serial number of the drive ______________________________________________
Service life of fitting____________________________________________________
Gear ratio___________________________________________________________
x
)For safety fittings, in addition to the passport, it is necessary to state the flow coefficient for gas (liquid) and the flow
cross-section of the valve or the flow characteristics must be stated (dependence of the flow volume on the pressure
gradient).
-84-
Appendix No. 6
2) Results of hydraulic tests
Testing pressure
[MPa]
Testing temperature
[°C]
Pressure during
inspection MPa
Date of test
Number of protocol
(of test diary)
3) Results of tests
Testing overpressure
[MPa] (kg/cm2)
Testing temperature
[°C]
Testing medium
2
Escapes [cm /min]
Date of test
Number of protocol
(of test diary)
4) Data for main and joining parts
Numb
er
Marking of
detail
X)
Basic material
Mark
Standa
rd or
TP
Data for welds
Type
(weld,
weld
deposit)
Welding
method
Electrodes,
weld. wire,
(type, mark,
standard or
TP)
Methods and
scope of weld
check
Note: For fittings 1, 2, 3 cIIIa classes, with the exception of KIP, in addition to data according to the table
there must be data for the mechanical properties and the chemical composition of the metal
within the scope stated by standards or TP and data for thermal processing.
x)
Details are mentioned as stressed by the overpressure and also seats or seat rings in the body, the weld
deposits, spindle, cone, drift, bellows and weld deposits.
-85-
Appendix No. 6
During the issue of the report for the group of products, it is permitted to state,
instead of specific mechanical properties and chemical composition, the property of
the metal according to TP or GOST, or the minimum permitted parameters
according to TP or GOST.
5) Conclusion
The fitting was produced fully in accordance with “Rules. AES" and TP (technical
conditions)
The fitting was considered capable for work during operating parameters.
Structural analysis No.___________ was performed in accordance with the
"Standard of structural analysis for AES".
Main plant engineer
……………….
signature
Head of Technical Inspection of the plant
……………….
signature
Note:
Assembly drawing and fittings must be attached to the passport.
-86-
Appendix No. 7
Construction lengths of valves
DN
65
80
100
125
150
200
250
300
400
500
600
800
Pp
[MPa]
From stainless steel
≤2,5
≤4,0
≤9,2
≤14,0
≤18,0 (20,0)
270
280
300
325
270
330
330
360
280
360
360
450
300
400
400
450
325
400
450
450
≤2,5
≤6,0
≤12,0
270
330
330
280
360
360
300
400
400
325
400
450
350
400
350
400
400
550
450
600
550
650
From carbon steel
350
400
450
400
550
600
450
500
600
700
800
1000
450
650
700
700
500
700
750
750
600
850
900
900
700
1100
1200
1200
800
1400
1400
1400
1000
1750
-
450
650
700
500
700
750
600
850
900
700
1100
1200
800
1400
1400
1000
1750
-
According to standards ČSSR and SFRJ, fittings stated to be welded to tubes 108x12, 133x14, 159x17, 245x18, 273x25 and 377x36 have nominal
clearance DN 100, 125, 150, 225, 250 and 350 and will be indicated 80/100, 100/125, 125/150, 200/250 and 300/350. here and in the future, for
stating the construction dimensions assigned to the nominal clearance, lower than the diameter considered according to USSR standards.
-87-
Appendix No. 7
Construction lengths of bellows type valves and KIP valves are
considered.
DN
KIP
Pp
[MPa]
For all
Pp
10
15
80
80
10
15
20
25
32
40
50
65
80
100
125
150
130
130
160
160
180
180
230
340
380
430
550
550
Construction lengths of “Butterfly” backflow valves
DN
65
80
100
125
150
200
225
250
300
400
600
150
200
200
200
250
250
250
350
350
400
600
Pp [MPa]
For all Pp
Offset of sleeves of bellows type valves
DN
10
15
20
25
32
40
50
65
80
100
125
150
24
24
35
35
45
45
70
110
140
160
210
210
Pp [MPa]
For all Pp
-88-
Appendix No. 7
Permitted construction height of valves (including electric drive)
DN
100
150
200
250
300
400
600
800
2,5
-
-
-
-
2000
2200
3200
3900
4,0 – 20,0
1500
1500
2000
2500
2500
-
-
-
Pp [MPa]
Permitted construction height of bellows type valves with manual
control
DN
10
15
25
32
50
65
80
100
125
150
4,0
300
300
300
350
520
650
850
880
1170
1170
up to 14.0
310
310
380
380
650
930
1200
1200
1700
1700
up to 20.0
350
350
400
450
800
1000
1300
1360
1800
1800
Pp [MPa]
-89-
Appendix No. 7
Construction bodies of bellows type valves and KIP valves
DN
KIP
Pp
[MPa]
For all Pp
Note:
10
15
I
I
I
Z
-
10
15
20
25
32
40
50
65
80
100
125
150
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
body with coaxial sleeves
body with off-set sleeves
-90-
Appendix No. 8
Materials accepted for the use for basic fittings details
Indication of
material
State – producer
of fittings
Type of semiproduct
1
2
3
Standard of
chemical
composition
Soviet analogical
materials
(according to
composition)
5
11 416.1
ČSSR
12 020.1
ČSSR
17 247.4
ČSSR
12 040.6
ČSSR
1.4541
ČSSR
C 25 N
SRN
4
části tělesa
forged pieces,
ČSN 4114166
rolled products
forged pieces,
ČSN 412020
rolled products
forged pieces,
ČSN 417247
rolled products
forged pieces,
ČSN 412040
rolled products
forged pieces,
rolled products
forged
TGL 6547
KX8 CrNiTi 18.10
SRN
forged
TGL 7743
08CH18N10T
GS-C 25 N
SRN
cast pieces
TGL7458
25 L
č. 1572
SFRJ
JUS C.B 9.002
08CH18N10T
č.1331
SFRJ
forged pieces,
semi-products EŠP
forged
JUS C.B 9.021
20
15 236.3
ČSSR
15 320.9
ČSSR
17 335.4
ČSSR
17 353.9
ČSSR
spojovací materiál pro přírubové spoje
forged pieces,
ČSN 415236
rolled products
forged pieces,
ČSN 425320
rolled products
forged pieces,
ČSN 417335
rolled products
forged pieces,
ČSN 417335
rolled products
-91-
20
20
08CH18N10T
analog není
08CH18N10T
25
25ChMF
25ChMF
ChN35VT
ChN35VT
Document for
approval of use
6
approved on
27.4.1979
approved on
27.4.1979
approved on
27.4.1979
approved on
27.4.1979
approved on
27.4.1979
approved on
3.2.1984
approved on
3.2.1984
approved on
3.2.1984
approved on
28.9.1984
approved on
21.3.1977
approved on
2.4.1979
approved on
2.4.1979
approved on
2.4.1979
approved on
2.4.1979
Appendix No. 8
12 040.6
ČSSR
24CrMoV5.5V
SRN
24CrMo5V
SRN
1.4923
SFRJ
1.4986
SFRJ
forged pieces,
rolled products
forged pieces,
rolled products
forged pieces,
rolled products
forged pieces,
rolled products
forged pieces,
rolled products
ČSN 412040
analog není
TGL 7961
25ChMF
TGL 7961
25ChM
DIN 17240
15Ch11MF
DIN 17240
analogue none
-92-
approved on
2.4.1979
approved on
3.2.1982
approved on
3.2.1982
approved on
28.9.1984
approved on
29.9.1984
Appendix No. 8
Materials used during welding of sealing and leading areas in
fittings
Materials
Manner
welding
of
Material
1
Automatic
by taped
electrode
under the
flux
Automatic,
by weld
under flux
2
3
Standard, TP
4
15Ch18N12S4T10
(EI 654)
TP 14-1-107374
Flux
PKNL-128
TP 108.1327-85
Welding wire
SV-04Ch19N9S2
GOST 2246-70
Tape
Flux
PKNL-17
Welding wire
SV-10Ch18N11S5M2T10
Flux
Manual arc
Brand (type, quality class)
Coated
electrodes
AN-26S
OF-6
FC-17
CN-2
(type E-190K62Ch29V5S2)
CN-6L
(type E-08Ch17N8S6G)
CN-12M, CN-12L
(type E13Ch16N8M5S5G4B)
Permitted operating conditions
Permitted
hardness of the
upper layer of
HRC weld
Operating
temperature [°C]
5
6
7
≥28+)
565
80
≥28+)
565
80
565
80
Medium specific
pressure [MPa]
maximum
TP 108.1327-85
≥23+)
(initial status)
TP 14-1-265679
GOST 9087-81
OST 5.9206-75
TP 108,794-78
≥28+)
(after annealing)
GOST 10051-75
40-50
600
120
GOST 10051-75
≥23+)
565
120
GOST 10051-75
38-50
600
120
≥23+)
565
50
CN-24
-93-
Appendix No. 8
Materials
Manner
welding
Permitted operating conditions
Permitted
hardness of the
upper layer of
HRC weld
Operating
temperature [°C]
4
5
6
7
VPN-1
(type E09Ch16N9S5G2M2FT)
GOST 10051-75
≥23+)
565
50
Bars
Pr-V3K
GOST 21449-75
Argon
higher and 1st class
GOST 10157-79
Welding wire
(bars)
SV-10Ch18N11S5M2T10
TP 14-1-265679
600
120
Argon
higher and 1st class
GOST 10157-79
Bars
Pr-V3K
GOST21449-75
Acetylene
-
GOST 5457-75
40-50
600
20
Oxygen
-
GOST 5583-78
PG-SR3-M
GOST 21448-75
PR-N77Ch15S3R2
PR-N73Ch16S3R3
TP 14-1-378584
40-50
565
120
higher and 1st class
GOST 10157-79
of
Material
1
Brand (type, quality class)
2
3
Standard, TP
Medium specific
pressure [MPa]
maximum
40-50
Arc under
argon
By gas
Powder
Plasma
Argon
-94-
≥23+)
(initial status)
≥28+)
(after annealing)
Appendix No. 8
Materials
Manner
welding
1
of
Material
Brand (type, quality class)
2
Inductive
Powder
3
Standard, TP
4
PG-SR2-M
GOST 21448-75
PR-N77Ch15S3R2
PR-N73Ch16S3R3
TP 14-1-378584
Permitted operating conditions
Permitted
hardness of the
upper layer of
HRC weld
Operating
temperature [°C]
5
6
7
40-50
565
120
Medium specific
pressure [MPa]
maximum
Notes:
1) For minimum hardness marked +) the upper limit of the hardness is stated in the drawing and the technological documentation
depending on the volume of weld deposit in the thermal processing regimes.
2) In cases mentioned in the drawing and technological documentation, for individual types of fittings, it is permitted to decrease
the hardness of the surface compared with data in the table, however maximally 3 HRC for weld deposits minimally with three
layers and maximally by 5HRC for single and double layer weld deposits and weld deposits under the clinker.
-95-
Appendix No. 9
17. SPECIAL REQUIREMENTS FOR DRIVES AND ELECTRIC PARTS OF
THE VALVE
17.1. General requirements for drives and electric parts of the valve
17.1.1. The requirements of division 17.1 shall not apply to a regulating valve and electric
magnets controlling relief valves and pulse-type relief devices (IPZ).
17.1.2. The electric part of the valve must completely correspond with the requirements of
these "General technical requirements” of OTT-87 in a part concerning the
resistance against deactivating solutions at external deactivation, preserving
the eligibility for operation at seismic and mechanical influence,
guarantees and requirements for transport and storage, instructions for
operation, safety requirements.
17.1.3. The electric part of the valve shall have a protection degree according to ST SEV 77877:
− in valves installed under the casing, minimally IP 55
− in valves installed in attended rooms, minimally IP 44
17.1.4. The power supply of electric drives and electromagnetic drives shall be performed by
alternating current of 50 (60) Hz frequency and voltage of:
− 220 (240) V in a one-phase network;
− 380/200 (415/240) V in a three-phase network.
The need for delivering the valve with a drive power supply having voltage of
415, 240 V, frequency of 60 Hz shall be arranged in the order separately.
The admissible frequency deviation is ± 2%, admissible deviation of power
supply +10 / -15%, whereby deviations in voltage and frequency are not
allowed to be opposite.
Electric drives and electromagnetic drives of safety systems shall also be
eligible for operation under the following conditions:
− decrease in voltage to 80% of the nominal value at a simultaneous decrease
in frequency by 6% of the nominal value within 15 s;
− increase in voltage to 110% of the nominal value and a simultaneous
increase in frequency by 3% of the nominal value within 15 s.
At the same time, a stoppage of the drive must not occur, and the valve shall
have the possibility to respond.
In addition, the version of electromagnetic drives in valves for nuclear power
plants with the mains supply voltage of 220 +22 / -44 V is permitted provided
that the customer agrees.
-96-
Appendix No. 9
17.1.5. Limit switches (also for hand-controlled valves – by a flywheel, jointed clutch, cone
reducing gear), track switches, and clutch switches by decreasing the torque
shall operate under the following conditions:
− in circuits with 220V alternating current, the current through closed
contacts from 20 to 500 mA;
− in circuits with 24 and 48 V direct current, the current through closed
contacts from 5 mA to 1 A, whereby the decrease in voltage on closed
contacts must not exceed 0.25 V (a time constant shall be agreed in the
TU).
17.1.6. In a valve of any type installed under the casing, the terminals of all electric units of
the valve shall be led out to one common terminal board (or into a connector)
delivered in a set with the valve. The terminal board (or connector) shall have
the same protection degree as a gear unit and shall enable to execute the
mounting of required diagrams.
At the same time:
− in drives with an output no higher than 7.5 kW, and in hand-controlled
valves using sensors (terminal switches) of signalisation, the input for
connecting one cable conjugating feeding, controlling, signalling, and other
circuits shall be taken into account;
− in drives with an output higher than 7.5 kW, two inputs for connecting two
external cables shall be taken into account: one for circuits of the electric
motor, the second one for controlling, signalling, and other circuits .
The parameters of external diameters in connected cables for a specific product
shall be introduced in the TU.
17.1.7. A diagram of internal connections of all units concerning the electric part of a valve
shall be placed on the internal side of the terminal board lid.
17.1.8. The insulating resistance of electric circuits in relation to a body and among each other
under the temperature of (20±5)°C and humidity from 30 to 80% shall be
minimum 20 MOhm.
The insulating resistance of electric circuits in the heaviest working conditions
with respect to the requirements of subparagraph b. 3.13 of OTT-87 and
division 7 of OTT-87 shall be minimum 0.3 MOhm (immediately after a 10hour test performed in a “high flow” mode).
The insulating resistance of electric circuits under the influence of
environmental factors – temperature and humidity – shall be introduced in the
TU.
17.1.9. The insulation of electric circuits in relation to a body of the circuit and among each
other under the temperature of (20±5)°C and humidity from 30 to 80% shall
-97-
Appendix No. 9
resist a testing voltage of sinusoidal alternating current of 50 Hz frequency for
a period of 1 min.
Effective values of testing voltages shall be selected depending on the nominal
voltage of the circuit (table No 9).
Table No 9
Nominal voltage, V
Testing voltage, V
No higher than 60
Higher than 60 and lower than 130
Higher than 130 and lower than 250
Higher than 250 and lower than 660
500
1000
1500
According to ST SEV 1346-78
The tests are allowed to be performed for each sample in accordance with b.
10.2 of ST SEV 1346-78.
The requirements for electric strength of insulations in circuits under the
influence of environmental factors – temperature and humidity – shall be
introduced in the TU for a product.
17.1.10.
Should an additional special low-voltage valve be required for ensuring
operational reliability of the valve, this shall be placed in corresponding lowvoltage full equipment (NKU) and be delivered in one unit together with the
valve. NKU shall ensure power supply, electric commands of remote (from a
shield) and automatic control, signalling circuits of the valve.
In the technical specifications to the valve, the electric diagrams, principle
diagrams, wiring diagrams, diagrams of external dimensions, and building
dimensions of NKU shall be introduced.
17.1.11.
The electric part of the valve shall contain terminals for earthing, equipped
with an apparatus against automatic unscrewing.
Additional safety requirements shall be determined in the technical
specifications for a product.
17.1.12.
In hand-controlled valves (see b. 3.16.), an installation of two terminal
switches for signalling extreme and intermediate positions shall be taken into
account. All outlets from switches must be led out into one terminal board or
connector with the possibility to connect one cable of an appliance. A crosssection of conductors and external diameter of the cable shall be specified in
the TU. The electric wiring diagram and diagram of the operation principle in
terminal switches see appendix No 10.
17.2. Requirements for electric drives of block valves
17.2.1. Introductory part
The requirements of this division shall apply to in-built and remotely
controlled electric drives with a double-sided clutch limiting the torque,
-98-
Appendix No. 9
designated for assembling special block valves installed in nuclear power plant
technological systems.
If a motor is not under an electric drive, the operating position of electric
drives may be of any kind.
Electric drives enable to perform:
− closing and opening the passage through the valve from a control post,
stopping the closing installation of the valve in any intermediate position
by pressing the "stop" button;
− automatic disconnection of the electric motor by a track switch at reaching
the extreme positions by a closing apparatus of the valve;
− automatic disconnection of the electric motor by the torque-limiting clutch
at reaching the extreme positions (“closed”, “opened”) by a closing
mechanism of the valve, and, during the operation, at emergency seizure of
a mobile part for closing and opening (see also b. 3.32.);
− on a control post, visual signalisation of the extreme positions in the
closing mechanism of the valve, and starting-up the torque-limiting clutch;
− local data on extreme positions and intermediate positions of the valve
closing mechanism on a scale of a local indicator (for drives installed apart
from the casing);
− automatic switchover of the electric drive from the hand-controlled
position to the electric-controlled position;
− eliminating automatic reposition of the valve closing mechanism under the
influence of the environment in piping;
17.2.2. Technical specifications
17.2.2.1.
Basic parameters
Electric drives are designated for operating in a unit with the valve in nuclear
power plant systems and shall satisfy the requirements of OTT-87 (parameters
of the environment, seismicity, deactivation), the requirements of b. 17.1. –
OTT-87, TU, and assembly working drawings.
17.2.2.2.
Characteristics of products
17.2.2.2.1.
Electric drives shall be delivered together with asynchronous short-circuited
electric motors of alternating current having 380 (415) V voltage and 50 (60)
Hz frequency. The requirement for delivering electric drives with electric
motors of 415 V voltage and 60 Hz frequency shall be arranged in the order
separately.
17.2.2.2.2.
Electric drives must be designed for operations in a short-term mode with the
length of running (PV) of 10% minimally. At the same time, no more than 6
starting modes per an hour shall be admitted. A higher number of modes shall
be arranged in the TU.
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Appendix No. 9
17.2.2.2.3.
Electric drives must have 2 terminal, 2 track, and 2 clutch switches. Each
switch must have one disconnecting and one connecting contact with different
terminals. All contacts of micro-switches must be led out into the terminal
board or to contacts of a connector without clutches /bridges/, enabling to
perform mounting of the required diagram from the external side.
If two connectors having own marks of circuits are to be used, the designation
(serial number) of output terminals shall be specified in the TU.
Electric wiring diagrams and diagrams of the operation principle of switches –
see appendix No 10.
17.2.2.2.4.
Electric drives shall be furnished with a handheld doubling machine being
activated manually, and, during the process of starting the electric motor, they
are either automatically disconnected, or may not limit the operation of the
electric motor. The force on the handheld doubling machine shall not exceed
735 N at the maximum opening torque, and it may be maximum 295 N at the
torque equal to 0.4 of the maximum opening torque as well .
17.2.2.2.5.
Electric drives shall be furnished with a double-sided torque-limiting clutch
enabling to perform disconnection of the drive by clutch micro-switches in the
extreme positions and any kind of an intermediate position, and, at the same
time, the torque electro-mechanic restriction shall be taken into account.
The regulation of the clutch shall be performed separately on the side of
closing as well as on the side of opening.
Micro-switches of the clutch shall have a lockout that eliminates the possibility
of automatic repeated start of an electric motor. The clutch shall ensure starting
the closing mechanism motion with the maximum torque of the drive.
17.2.2.2.6.
Electric drives shall have local indicators of position. Electric drives installed
under the casing do not need to have local indicators.
17.2.2.2.7.
The basic technical specifications and characteristics of electric drives
pertaining to the block valve shall be introduced in the TU according to table
No 10 being as an example.
17.2.2.2.8.
The requirements for cable entries of electric drives are specified in appendix
No 9. The requirements of appendix No 9 are possible to be stated more
precisely in specific TU.
17.2.2.3.
Requirements for assembling products
17.2.2.3.1.
Assembling products and units shall be stored in a manufacturing company of
electric drives in closed areas under conditions specified in the technical
specifications for these products.
17.2.2.3.2.
Purchased products and products delivered according to cooperation shall
correspond with the drawings and technical specifications of a delivery
company, “Special conditions of a delivery”, and shall be furnished with
-100-
Appendix No. 9
corresponding documents with introducing the characteristics obtained from
tests, guarantee periods, and a conclusion of suitability.
-101-
Serial
No
1
3
regulation boundary of the torque-limiting clutch,
Nm
4
limit rotational speed of a driving shaft
5
rotational frequency of the driving shaft, rpm
6
from the driving shaft to the electric motor
7
from the driving shaft to the flywheel
8
maximum force on the flywheel, N
9
connection mode (sealing input, connector)
10
weight (including the electric motor), kg
11
type
12
nominal output, kW
13
nominal voltage, V
14
nominal current, A
15
rotational frequency, rpm
16
efficiency, %
17
power ratio
18
ratio between the initial trigger current and the
nominal
19
ratio between the initial torque and the nominal
20
positions of installations
x)
21
starting torque, Nm
drive
2
Electric drive
electric motor
Basic technical specifications and characteristics of an electric drive to a block valve
drive ratio
Table No 10
Appendix No. 9
---------------------------------------x) Admissible drive mounting shall be stated:
in attended areas – P; in boxes – B; under the coating (in the hermetic area) – O;
for safety systems accordingly - PS, BS, OS.
-102-
designation, version
Appendix No. 9
17.2.2.3.3.
Purchased parts, nodes, and products, as well as products delivered by manufacturers
based on cooperation, are subject to a selective receiving inspection in the following
volume:
1) rubber cups, washers, rings, and plastic washers on a polytetrafluoroethylene basis are
subject to external inspection on non-existence of damage, measurement, and the
verification of accompanying documentation;
2) electric motors and micro-switches are subject to external inspection, the verification
of accompanying documentation, and tests of eligibility for operation; the amount and
character of verifications shall be specified in the TU.
17.2.2.3.4.
A receiving inspection of products delivered based on cooperation shall be performed
by the department of technical control (OTK) of the manufacturer of electric drives.
Putting products into operation without the receiving inspection is not admitted.
17.2.2.4.
Requirements for production
17.2.2.4.1.
At turning the electric motor off, the electric drive shall enable automatic switchover
from the hand-controlled position to the electric-controlled position.
17.2.2.4.2.
Track and clutch switches shall ensure turning the electric motor off and signalling the
“closed”, “open”, and “clutch” positions.
17.2.2.4.3.
The mounting of conductive parts shall eliminate the possibility of signalisation
breakdown.
17.2.2.4.4.
On the bended surface of tubes with a diameter no higher than 25 mm, gathers having
a height no higher than 2 mm are admitted, on the surface of tubes with a diameter
higher than 25 mm, gathers having a height no higher than 3 mm are allowed.
17.2.2.4.5.
Before soldering, connected sites shall be carefully cleaned of all rust, paint,
oxygenated layer, and other impurities.
17.2.2.4.6.
At soldering parts, no smear from the solder shall be present in connected sites.
17.2.2.4.7.
After soldering, no unsoldered sites, bubbles, and fluxing agent footprints shall be
present in connected sites.
17.2.2.4.8.
Use of acid fluxing agents at hot tinning is not permitted. Sites exposed to hot tinning
shall not contain especially convex or sharp sediments.
17.2.2.4.9.
The thickness of a coating layer at hot tinning (if instructions on drawings are missing)
shall be from 0.05 to 0.1 mm.
17.2.2.5.
Designation, conservation, package.
17.2.2.5.1.
Designation.
17.2.2.5.1.1.
Each electric drive is furnished with a plate containing the following inscribed
inscriptions:
title or a trade mark of the manufacturer;
agreed designation of an electric drive;
maximum torque, Nm;
nominal output, kW;
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Appendix No. 9
degree of protection;
weight;
serial number;
year of manufacture.
17.2.2.5.2.
Conservation.
17.2.2.5.2.1.
Electric drives accepted by the technical control of the manufacturer shall be
submitted to conservation.
17.2.2.5.2.2.
The selection of conservation lubricants shall be performed in consideration of service
conditions, transport, and storage of electric drives.
17.2.2.5.2.3.
The quality of conservation lubricants shall be confirmed by the certificates of a
manufacturing plant.
17.2.2.5.2.4.
On the surface submitted to conservation, a selected method of applying a lubricant
shall ensure a solid (without interruptions, cracks, gaps) layer of the lubricant, of a
uniform thickness, containing no air bubbles, nodules, and foreign substances during
the external inspection.
17.2.2.5.2.5.
The conservation of electric drives shall be accepted by the technical control of the
manufacturer.
17.2.2.5.2.6.
In a technical sheet to the electric drive, the following shall be stated: date of
performing conservation, conservation method, and the period of conservation
efficiency.
17.2.2.5.3.
Package.
17.2.2.5.3.1.
After conservation, electric drives shall be wrapped into boxes whose drawings are
processed by the manufacturing plant.
17.2.2.5.3.2.
Before packing electric drives, the openings of the body, necks, and other openings
shall be blinded.
Note: In a domestic delivery of electric drives, conservation and package for the valve
assembly shall be specified in the TU.
17.2.3. Principles of acceptance
17.2.3.1.
Each electric drive shall be verified by the manufacturing plant.
17.2.3.2.
Testing samples of electric drives shall be submitted to accepting tests in accordance
with GOST 15001-88. Serial samples shall be submitted to acceptance, periodical, and
type tests in accordance with the requirements of the TU.
17.2.3.3.
All tests shall be performed by the manufacturing plant on its own, by using own
sources, in volumes according to the requirements of these OTT-87 and shall be
specified in the TU.
Type and periodical tests shall be performed according to programmes agreed with the
customer.
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Appendix No. 9
17.2.3.4.
Electric drives resisting the tests are assumed to be those whose controlled parameters
correspond with the instructions in these OTT-87, TU, and drawings.
Should electric drives not satisfy the requirements of one of the programme points and
testing methodologies in periodical or type tests, tests shall then be performed
repeatedly; a double amount of samples is required to be submitted to repeated tests.
Should electric drives not satisfy the requirements of the programme and testing
methodology in repeated tests, their production shall then be interrupted until finding
the causes of defects and their removal.
17.2.4. Control methods
17.2.4.1.
Control and measuring apparatus and testing equipment shall be verified whether they
correspond with technical sheets, or other technical documents containing the basic
parameters of this installation. In the process of verifying electric drives, the use of
measuring instruments with expired term of obligatory verification is forbidden.
17.2.4.2.
The premises where tests are to be performed shall eliminate the possibility of dirtying
electric drives, installations, or instruments.
17.2.4.3.
Technical personnel performing tests shall:
1) undergo instructions of safety technique;
2) have knowledge of operation in installations on which tests are to be performed;
3) read over a technical description and instructions for use concerning tested electric
drives.
17.2.4.4.
The external treatment (paint), quality of mounting and tightening reinforcements,
completeness of a delivery, and the conformity between a product and drawings shall
be verified by external inspection.
The inspection of a real weight of electric drive shall be performed on testing samples
and on electric drives of a serial production being submitted to considerable design
modifications, and at a change of the material with great changes in bulk weight.
17.2.4.5.
The continuity of rotation in a mechanism under no-load using a flywheel and
switching the drive from the electric-controlled position to the hand-controlled, and
vice versa, shall be verified. In each direction, rotation shall be continual for a
minimum period of 10 revolutions of the flywheel. The operation of the electric drive
from the electric motor shall be verified.
Fivefold drive starting under no-load shall be performed at alternating voltage. The
period of running in each direction shall be maximally half a minute. The acoustic
pressure height shall not exceed 85 dB.
17.2.4.6.
A handheld doubling machine shall be verified.
17.2.4.7.
The torque-limiting clutch shall be regulated on closing and opening to the maximum
torque for verifying the electric drive conformity with the requirements of b.
17.2.2.2.5. At starting the drive at the side of closing, a brake shall be gradually
loaded until automatic stoppage of the drive by a clutch switch occurs; the torque
value shall be verified according to the instrument of the installation.
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Appendix No. 9
Analogical verification shall be performed on the side of opening. At changing the
clutch setting to the minimal torque, the verification shall be performed on the side of
closing and opening.
The verification of automatic disconnection of the electric motor by the clutch switch
shall be performed by fivefold starting of the electric drive. At the same setting of the
torque switch cams, the torque value shall correspond with the maximum torque of a
given electric drive with allowable deviations of ± 10%. The operation of “closed”,
“opened”, and “clutch” signalisation shall be verified by fivefold starting of the drive,
at setting the track switch for this purpose. Together with the said verifications, the
handheld doubling machine shall also be verified. In the said verifications, the
operation of the electric drive shall be failure free.
17.2.4.8.
Verification of the insulating resistance between electric circuits, and conductive parts
and a body shall be performed under direct current.
In periodical tests, verification of the electric strength of conductive parts insulation
under alternating current for a period of one minute shall be performed.
17.2.4.9.
For verifying the electric drive conformity with the requirements of b. 17.1.4, special
tests that confirm the eligibility for the electric drive operation in the said conditions
shall be performed.
17.2.4.10.
Verification of the protection degree of electric drives in accordance with the
requirements of b. 17.1.3. shall be performed in the stage of periodical and type tests.
17.2.4.11.
Based on satisfactory results of acceptance tests, a graph of torque clutch regulation
shall be made for each electric drive. The regulation graph is introduced in a technical
sheet for each electric drive. Two points corresponding with the minimum and
maximum torque are required to be obtained for producing the graph.
17.2.4.12.
Electric drives which do not meet the requirements of these OTT-87 and drawings
shall be excluded.
17.2.5. Safety requirements
17.2.5.1.
Only specially prepared personnel has access to the mounting and control of electric
drives that has read over the technical description and directive for using electric
drives and has obtained corresponding training in safety technique.
17.2.5.2.
The following principles shall be observed during operating electric drives:
1) the service of electric drives is required to be performed in accordance with valid
“Principles of technical operation of electric drives and appliances”, M., Atomizdat,
1971;
2) it is required to account for passages between electric drives and building
constructions that enable safe service in accordance with the requirements of the PUE
“Principles of electric drive installation”, division 5, M., Energoatomizdat, 1985;
3) electric drive shall be reliably earthed;
4) the use of electric drives in a long-term operating mode at maximum load at PV higher
than PV of the electric motor is forbidden;
-106-
Appendix No. 9
5) when demounting the electric drive, it shall be verified that the drive is disconnected
from the network and a plate with an inscription “Do not switch on, people are
working” is posted up on the control post;
6) demounting and mounting of electric drives shall only be performed by using an
undamaged tool;
7) works on conservation and reconstruction of electric drives shall be performed in
accordance with the requirements of a directive for use.
17.2.6. Requirements for reliability
17.2.6.1.
Electric drives belong to the class of reparable products.
Preventive inspections are admitted during their usage and, if required, technical
inspections shall be performed, but no sooner than after 10 000 hours of continuous
operation.
The average service live of electric drives is minimally 10 years (80 000 hours).
Determined reserve for a four-year period between repairs (30 000 hours) is 3 000
cycles. The cycle comprises of the course of “closing – opening” with pauses
corresponding to the length of activation (PV).
17.2.6.2.
The probability of no-failure operation of the electric drive per 3 000 cycles, for a
period of four years, shall be minimally 0.98.
17.2.6.3.
Reliable probability for calculating the lower reliable limit of no-failure operation is
0.95.
17.2.6.4.
The requirements for calculating and confirming indicators of no-failure operation and
service life in accordance with b. 8.4. and b. 8.5 of these OTT-87.
17.2.7. Completeness
17.2.7.1.
The following items belong to the delivery composition:
e) electric drive in a compound state;
f) technical sheet to the electric drive;
g) technical description and directives for use;
h) set of spare parts in accordance with a ZIP sheet;
i) technical sheet and directives for use to the electric motor, 1 exemplar per a delivery.
Note: A technical description and directive for use are permitted to be delivered per a
consignment of electric drives delivered to one address; however, minimally 1
exemplar per 10 products.
17.3.
Requirements for pneumatic drives with electromagnetic control of a check /block/ quick-lift
valve
These requirements shall apply to pneumatic drives with electromagnetic control of
the quick-lift valve with the pneumatic drive.
17.3.1 Pneumatic drives are designated for use in a valve assembly in the safety systems of nuclear
power plants and shall correspond with the requirements of OTT-87 (parameters of
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Appendix No. 9
the environment, seismicity, deactivation, and other), requirements of b. 17.1 of OTT87, TU, and assembly working drawings.
17.3.2. Parameters of pneumatic drives:
a) control environment – air;
b) control air pressure (the pressure is permitted to be increased to 5.5 MPa at starting the
relief valve) – 4.5 ± 0.5 MPa;
c) control air temperature – from -10°C to 60°C;
d) dew point – maximally -10°C;
e) pollution class – maximally 7 according to GOST 17433-72.
17.3.3. In the TU, the consumption of compressed air per one starting and parameters of leak in the
pneumatic drive shall be introduced for the valve with the pneumatic drive.
17.3.4. Each valve with the pneumatic drive is controlled from an individual distributor installed
directly on the valve.
17.3.5. A closing organ of the valve with the pneumatic drive must not change its position (closed or
opened) at accidental interruption of air supply minimally for 10 hours. The period
when the valve is in a position after starting is not limited.
17.3.6. In case of accidental loss of control air pressure (minimally for 10 hours), the distributor must
ensure from the electromagnetic drive its one starting (opening or closing).
17.3.7. At increased temperature of the environment to no higher than 90°C, 150°C (see table No 5
and 6), the control systems of the valve are also warming to reach this temperature;
under these conditions, the pressure in the control systems of a pneumatic valve
increases by corresponding rate, whereby this shall be taken into account when a
valve is being elaborated.
17.3.8. The pneumatic drive and pneumatic distributor shall admit the possibility of multiple pressure
tests by air or other gas environment (in accordance with subparagraph 5.9 “Principles
of the AEU”).
Access of water into the pneumatic drive and pneumatic distributor is not permitted.
17.3.9. External and internal version of the pneumatic drive shall ensure maximum possible removal
of sediments, products of corrosion, dust, and other pollution.
17.3.10.
The connection of pneumatic distributors shall be performed under the tube of Ø 14 x
2 mm (material – 08X18H10T steel).
17.3.11.
Pneumatic distributors of pneumatic drives shall be performed by power supply on
alternating current of 220 (240) V, 50 (60) Hz, or direct current, i.e. alternating current
is fed into the distributor and is transformed on direct current in a rectifier being part
of the distributor.
Admissible deviations of voltage and frequency see b. 17.1.4.
The consumption of a control electromagnet (to one side) must be maximally 60 VA.
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Appendix No. 9
The requirement for delivering a drive for 240 V voltage, 60 Hz frequency shall be
agreed in the order.
17.3.12.
The valve with a pneumatic drive must have limit switches for controlling
electromagnets of the pneumatic distributor and signalisations of extreme and
intermediate positions of the valve. Limit switches must have connecting and
disconnecting contacts with separate terminals.
17.3.13.
Switches must operate under the following conditions:
a) two opposite contacts of switches, switched on in the extreme and intermediate
position - in winding circuits of corresponding control electromagnets for cutting their
circuits after finishing the “opening” or “closing” operation; their ability of
commutation shall be determined by the winding parameters of electromagnets;
b) other contacts of switches:
−
−
in alternating current circuits of 220 V, current from 20 to 500 mA;
in direct current circuits of 24 and 48 V at a current through closed contacts from
5 mA to 1 A, whereby a decrease in voltage on closed contacts shall not exceed
0.25 V (a time constant is required to be agreed in the TU).
According to subparagraph “b”, switches shall be delivered depending on parameters
– according to the order.
17.3.14.
All terminals from control electromagnets and from contacts of switches must be led
out without joints into a terminal board, or into a connector. The possibility of
installing joints /bridges/ between terminals of the terminal board on the cable
connection side, or between contacts of a connector part for response shall be taken
into account.
Terminal boards for a valve both under and inside the casing shall be designed for
connecting one cable matching supply, control, and signalling circuits. Cross-sections
of cable conductors and external cable diameter are specified in the TU.
The electric wiring diagram and operational diagram see appendix No 10.
17.3.15.
Requirements for reliability
17.3.15.1.
Electric drives and pneumatic drives belong to the class of reparable products.
Preventive inspections are permitted during their usage and, if required, technical
inspections shall be performed; however, no sooner than after 10 000 hours of
continuous operation.
The average service live of electric drives is minimally 10 years (80 000 hours).
Determined reserve for a four-year period between repairs (30 000 hours) is 1 000
cycles.
17.3.15.2.
17.4.
The probability of no-failure operation of the drive per 25 cycles, for a period of four
years, shall be minimally 0.998.
Requirements for the electric drives of a regulating valve
-109-
Appendix No. 9
These requirements shall apply to electric executive mechanisms (EIM) designated for
transferring regulation organs in the automatic regulation systems of technological
processes in accordance with command relay and pulse output signals of automatic
regulating installations and the commands of operators from control posts.
17.4.1.
Types and basic parameters
17.4.1.1.
EIM are designated for using in a regulation, and block and regulation valve assembly
on nuclear stations, and shall correspond with the requirements of OTT-87 in a part of
parameters of the environment, seismicity, and conditions for deactivation.
17.4.1.2.
The types, basic parameters, and methods of EIM tests according to GOST 7192-89.
17.4.1.3.
EIM shall have modifications enabling their installation:
− directly on the valve;
− inside the valve on a separate foundation.
The installation of EIM directly on the valve shall be preferred.
17.4.2. Technical characteristics
17.4.2.1.
The supply of EIM shall be performed by alternating current of 50 (60) Hz frequency,
with an admissible deviation of 2%, supply voltage of 220 (380/220) V and 240
(415/240) V with an admissible deviation of +10% / -15%, whereby deviations of
voltage and frequency shall not be opposite.
The need for delivering EIM on 415, 240 V, on 60 Hz frequency shall be separately
agreed in the order.
17.4.2.2.
The EIM shall be furnished with 4 switches signalling extreme and intermediate
positions of the output organ. Two switches are designated for extreme positions, and
two switches are for intermediate positions. Each switch shall have one break and one
make contact with separate terminals led out to the terminal board, or to contacts of
the connector.
17.4.2.3.
The EIM shall be furnished with a handheld doubling machine being connected
manually, and being disconnected automatically when the electric motor is operating,
or shall not limit automatic control.
The force on the handheld doubling machine shall not exceed:
- in regulating valves – 300 N at the nominal torque value;
- in block and regulating valves – 750 N at 1.7 of the nominal torque value.
17.4.2.4.
Switches shall operate under these conditions:
− in alternating current circuits of 220 V, at the current through closed contacts from
20 to 500 mA;
−
in direct current circuits of 24 and 48 V, at the current through closed contacts
from 5 mA to 1 A, whereby a decrease in voltage on closed contacts shall not
exceed 0.25 V (a time constant is required to be agreed within the TU).
The assembling of EIM by switches for alternating or direct current circuits is
admitted depending on the order.
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Appendix No. 9
17.4.2.5.
The EIM shall have a local position indicator. The position indicator must enable
setting at points 0 and 100%.
The EIM installed under the casing is not required to have the local indicator.
17.4.2.6.
On the body of the EIM, a terminal for earthing shall be taken into account. Earthing
terminals must be furnished with equipment against spontaneous unscrewing.
17.4.2.7.
Mechanisms shall be eligible for operation and maintain morphological characteristics
at external vibrating effects of frequencies from 1 to 120 Hz at accelerating vibration
to 10 m/s2 (amplitude value).
Note:
Vibration shift – the value of object point deviation fluctuant in relation to an
equilibrium position;
vibration acceleration – the value of object point acceleration fluctuant in relation to
the equilibrium position (the second derivation at the time of vibration shift).
17.4.2.8.
The EIM shall have a protection degree according to ST SEV 778-77:
- in installation under the casing minimally IP55;
- in installation inside the casing minimally IP44.
17.4.2.9.
The insulating resistance of EIM electric circuits in relation to the body and among
each other at ambient temperature of 20±5°C and relative humidity maximally 80%
shall be minimally 20 MOhm; in the heaviest operating conditions with respect to the
requirements of b. 3.13 and 7.0 (except for a “high flux” mode) of OTT-87 minimally
0.3 MOhm.
17.4.2.10.
All terminals from the electric motor, contacts of switches, and from the position
indicator shall be led out to the terminal board, or connected to connectors. In the EIM
installed under the casing, terminal boards or connectors shall be designed so that the
connecting of two cables may be done – one for power circuits and circuits of limit
switches, and one for the position indicator. In the EIM installed inside the casing,
terminal boards or connectors shall be designed for three cables to be connected – one
for power circuits, one for circuits of limit switches, and one for the position indicator.
The possibility to install joints between the terminals of the terminal board of the side
for connecting cables, or between the contacts of a part designated for connector
response, shall also be taken into account.
Electric wiring diagrams and diagrams of the operation principle of switches see
appendix No 10.
17.4.2.11.
A closing torque (force) of the EIM at the nominal supply voltage shall exceed the
nominal torque (force) minimally 1.7 times.
17.4.2.12.
A clearance of the EIM output organ according to ST SEV 1862-79. In mechanisms of
MEM type without units of self-braking, requirements for clearance are not
determined.
17.4.2.13.
After-running of the EIM output organ according to ST SEV 1862-79. The values of a
parameter shall be introduced in the TU.
-111-
Appendix No. 9
17.4.2.14.
The EIM shall be delivered with an in-built electric position sensor with a unified
current signal of 0-5 mA or 4-20 mA, and equipment for its feeding to 220 V (240) V
+10% / -15% of alternating current.
A supply voltage of 240 V shall be separately agreed in the order.
A version of the sensor with extension blocks is permitted.
A distance from the EIM to the extension block is no higher than 100 m (a distance
higher than 100 m shall be agreed in the TU).
17.4.2.15.
The EIM shall be designed for operating in a repeated short-term reverse mode with a
number of activations minimally 320 per an hour and a period of activation maximally
25% at loading the output organ within a range from the nominal counteractive value
to 0.5 of the nominal concurrent value. At the same time, the EIM shall enable
operation for a period of 1 hour in the repeated short-term reverse mode with no more
than 630 activations per an hour and the period of activation no more than 25% with
the subsequent repetition minimally after 3 hours. A time interval between activating
and deactivating for a reverse direction is minimally 50 ms.
Also an EIM construction for operating in a planned regulation mode is required.
The EIM delivery with maximum 320 activations is possible, being subject to
approval on the part of the customer (project organisation), and shall be agreed within
the TU.
17.4.2.16.
An installation position of the EIM may be whatsoever, except for cases with using a
liquid lubricant. The possibility of valve installation with a down position of the
electric drive is subject to additional approval by the manufacturer.
17.4.2.17.
The probability of no-failure operation of EIM for a period of 8 000 hours shall be
minimally:
− for installed in safety systems – 0.98;
− for installed in systems important for safety – 0.97;
− for installed in systems of normal use – 0.92.
17.4.2.19.
The EIM shall normally operate for a period of 10 000 hours without service and
repairs.
17.4.2.20.
The EIM shall ensure the fixation of the output organ position under load at
interrupting the supply voltage.
In mechanisms of MEM type, the requirement for fixation is not determined.
17.4.2.21.
EIM for block and regulating valves are required to be constructed in a version
enabling to brake the output organ by load. At the same time, mechanisms must
generate a torque (force) minimally 1.7 of the total value. The period when the
mechanism is being in a stalled state shall be within 3 s, and EIM may be
disconnected after that.
An admissible period for EIM to be in a stalled state, and the values of shift for the
output organ under the effect of load after disconnecting shall be specified in the TU
to EIM of specific types.
-112-
Appendix No. 9
EIM for block and regulating valves shall be delivered with a torque-limiting clutch
(see b. 17.2.1 and 17.2.2.2.5).
Electric wiring diagrams and diagrams of the operation principle of switches see
appendix No 10.
17.4.2.22.
No requirements concerning the eligibility for operation in a “high flux” emergency
mode and after it are imposed on EIM.
17.4.2.23.
The following shall belong to the assembly of EIM:
− special mounting tool (in case of need);
− spare parts and accessories in an amount satisfying the needs of EIM use for a
period of guarantee.
A technical sheet, technical description, and directive for use, drawing of the overall
appearance (if it is not included in the technical description or directive for use),
drawings of overall views, and designation of rapidly expendable parts shall be
appended to each EIM.
17.4.3. Designation, conservation, package
17.4.3.1.
Designation
Each EIM shall be furnished with a plate with the following inscriptions:
name or a trade-mark of the manufacturer;
agreed designation;
nominal torque, Nm;
nominal supply voltage, V;
nominal period of the output organ full operation, s;
nominal value of the input organ full operation, speed, mm;
protection degree;
weight, kg;
serial number;
year of manufacture.
17.4.3.2.
Conservation
17.4.3.2.1.
EIM accepted by the technical control of the manufacturer shall be submitted to
conservation.
17.4.3.2.2.
The selection of conservation lubricants shall be performed based on operating
conditions of electric drives.
17.4.3.2.3.
The quality of conservation lubricants must be confirmed by the certificates of the
manufacturer.
17.4.3.2.4.
On a surface submitted to conservation, a selected method of applying the lubricant
must ensure a continual (without interruptions, cracks, gaps) lubricant layer, uniform
concerning the thickness, and containing no air bubbles, clods, and foreign substances
during the process of external examination.
17.4.3.2.5.
EIM conservation shall be accepted by the technical control of the manufacturer.
-113-
Appendix No. 9
17.4.3.2.6.
The following shall be stated in the technical sheet to EIM: date of conservation
performance, conservation method, and the period of conservation efficiency.
17.4.3.3.
Package
17.4.3.3.1.
After conservation, EIM must be wrapped in boxes whose drawings are processed by
the manufacturer.
17.4.3.3.2.
Before packing EIM, the openings of the body, necks, and other holes must be
blinded.
-114-
Appendix No. 9
REQUIREMENTS
for cable inlets of the electric drives of the isolating valves, EIM control
valves, pneumatic drive valves and manual control valves (informative data
that shall be specified in TU)
1. For electric drives, placed under the casing and in the boxes, with the electric motor of
power up to 7,5 kW including are taken into account the possibilities of connecting
one special cable of appliance with the copper conductors of 1,5 or 2,5 mm2 crosssection and the cable outer diameter 20 – 25 mm, connecting the electric motor and
control circuits.
2. For electric drives, placed in the attendance areas (outside the casing), with the electric
motor of power up to 7,5 kW including are taken into account the possibilities of
connecting two cables of appliance with two inlets:
For a cable with the copper conductors of 0,5 – 1,5 mm2 cross-section and the outer
diameter 14 – 19 mm – for the control circuits.
For a cable with the copper conductors of 2,5 mm2 cross-section and the outer diameter 10
– 15 mm – for the electric motor circuits.
3. For electric drives, placed under the casing and in the boxes, with the electric motor of
power over 7,5 kW up to 28 kW including are taken into account the possibilities of
connecting two cables of appliance with two inlets:
For a special cable with the copper conductors of 1,5 – 2,5 mm2 cross-section and the
outer diameter 20 – 25 mm – for the control circuits.
For a special cable with the copper conductors of optional 16 – 25 mm2 cross-section and
the outer diameter 25 – 40 mm – for the electric motor circuits.
-115-
Appendix No. 9
4. For electric drives, placed in the attendance areas (outside the casing), with the electric
motor of power over 7,5 kW up to 28 kW including are taken into account the
possibilities of connecting two cables of appliance with two inlets:
For a cable with the copper conductors of 0,5 – 1,5 mm2 cross-section and the outer
diameter 14 – 20 mm – for the control circuits.
For a cable with the circular aluminium conductors of optional 10 – 50 mm2 cross-section
and the corresponding cable outer diameter 20 – 35 mm.
5. For EIM of power up to 7,5 kW including, placed under the casing, it is necessary to
ensure the connection of the two following special cables with the copper conductors
with two inlets:
For power circuits and breaker circuits of 1,5 – 2,5 mm2 cross-section and the
corresponding cable outer diameter 20 – 25 mm.
For position indicator circuits - shielded of 1,5 mm2 cross-section and the outer diameter
14 – 18 mm.
6. For EIM, placed outside the casing, it is necessary to ensure the connection of the
three following special cables with three inlets:
For breaker circuits – by a cable with the copper conductors of 0,5 – 1,5 mm2 crosssection and the outer diameter 14 – 19 mm.
For a position indicator cable – by a cable with the copper conductors (shielded) of 1,5
mm2 cross-section and the outer diameter 10 – 15 mm.
For EIM power circuits:
-
of power up to 7,5 kW including - by a cable with the copper conductors of 2,5 mm2
cross-section and the outer diameter 10 – 15 mm;
-
of power over 7,5 kW up to 15 kW – by a cable with the circular aluminium
conductors of optional 10 – 50 mm2 conductors cross-section and the corresponding
outer diameter 20 – 35 mm.
7. For isolating /closing/ valve with the pneumatic drive, placed both under and out of
the casing, is taken into account the possibility of connecting one cable of appliance,
common for electric magnets and breakers, with the copper conductors of 1,5 mm2
cross-section and the cable outer diameter:
17 mm + 10 % or 21 mm + 10 % - under the casing;
10 mm + 10 % or 12 mm + 10 % - out of the casing.
-116-
Appendix No. 9
8. For the manual control valves (end switch modifications), placed both under and out
of the casing, are taken into account the possibilities of connecting one cable of
appliance with the copper conductors of 1,5 mm2 cross-section and the cable outer
diameter:
17 mm + 10 % - under the casing;
10 mm + 10 % - out of the casing.
-117-
Appendix No. 10
Notes:
1. Analogical electric wiring diagram shall also be
performed when using a connector.
2. The number of earthing points shall be specified in
the technical specifications for a valve.
closed contact
opened contact
SQC1 opening limit switch
SQT1 closing limit switch
-118-
Electric wiring diagram of limit switches in a valve with manual control
Operation diagram of switches
Appendix No. 10
M – three-phase asynchronous electric motor
SQFC1 - opening torque switch
SQFT1 - closing torque switch
SQC1 - opening limit switch
SQT1 - closing limit switch
SQC2 - opening track switch
SQT2 - closing track switch
Electric wiring diagram of an electric drive in a block valve
under the casing of a nuclear power plant reactor
(with output no higher than 7.5 kW)
Operation diagram of switches
Note:
1. Analogical electric wiring diagram of an electric drive
shall also be performed when using a connector.
opened contact
-119-
for using
closed contact
2. A designation according to national standards, for
example U, V, W, or R, S, T instead of A, B, C
designation, shall be admitted.
Appendix No. 10
M – three-phase asynchronous electric motor
SQFC1 - opening torque switch
SQFT1 - closing torque switch
SQC1 - opening limit switch
SQT1 - closing limit switch
SQC2 - opening track switch
SQT2 - closing track switch
Note:
Electric wiring diagram of an electric drive in a block valve
using under the casing of a nuclear power plant reactor
(with output higher than 7.5 kW)
Operation diagram of switches
1. Analogical electric wiring diagram of an electric drive
shall also be performed when using a connector.
closed contact
opened contact
-120-
for
2. A designation according to national standards, for
example U, V, W, or R, S, T instead of A, B, C
designation, shall be admitted.
Appendix No. 10
M – three-phase asynchronous electric motor
SQFC1 - opening torque switch
SQFT1 - closing torque switch
SQC1 - opening limit switch
SQT1 - closing limit switch
SQC2 - opening track switch
SQT2 - closing track switch
Note:
Electric wiring diagram of an electric drive in a block valve
inside the casing of a nuclear power plant reactor
Operation diagram of switches
1. Analogical electric wiring diagram of an electric drive
shall also be performed when using a connector.
opened contact
-121-
for using
closed contact
2. A designation according to national standards, for
example U, V, W, or R, S, T instead of A, B, C
designation, shall be admitted.
Appendix No. 10
Note:
1. Analogical electric wiring diagram shall also be
performed when using a connector.
2. When using electromagnets of direct current with
inbuilt rectifiers, their internal wiring diagram shall be
introduced in the technical specifications for a valve.
closed contact
opened contact
3. The number of earthing points shall be specified in the
technical specifications for a valve.
YAC1 valve opening electromagnet
YAT1 valve closing electromagnet
SQC1 opening limit switch
SQT1 closing limit switch
-122-
Electric wiring diagram of control electromagnets and limit switches of a check (block) quick-lift
valve with a pneumatic drive (normally opened and normally closed) at installation under and
inside the casing of a nuclear power plant reactor
Operation diagram of switches
Appendix No. 10
Operation diagram of limit and track switches
SQC1 - opening limit switch
SQT1 - closing limit switch
SQC2 - opening track switch
SQT2 - closing track switch
PHE – position sensor (the type of a position sensor
and the number of conductors is specified in the
technical specifications)
1. Analogical electric wiring diagram of an electric drive
shall also be performed when using a connector.
Electric wiring diagram of an electric drive in a regulating valve
using inside the casing of a nuclear power plant reactor
M – one-phase or three-phase asynchronous electric motor
(the type of an electric motor is specified in the technical
specifications)
2. A designation according to national standards, for
example U, V, W, or R, S, T instead of A, B, C
designation, shall be admitted.
opened contact
-123-
for
closed contact
Appendix No. 10
M – one-phase or three-phase asynchronous electric motor
(the type of an electric motor is specified in the technical
specifications)
SQC1 - opening limit switch
SQT1 - closing limit switch
SQC2 - opening track switch
SQT2 - closing track switch
PHE – position sensor (the type of a position sensor and
the number of conductors is specified in the technical
specifications)
Electric wiring diagram of a regulating valve for using
the casing of a nuclear power plant reactor
(with output no higher than 7.5 kW)
Operation diagram of track and limit switches
Note:
1. Analogical electric wiring diagram of an electric drive
shall also be performed when using a connector.
opened contact
2. A designation according to national standards, for
example U, V, W, or R, S, T instead of A, B, C
designation, shall be admitted.
-124-
under
closed contact
Appendix No. 10
M – one-phase or three-phase asynchronous electric motor
(the type of an electric motor is specified in the technical
specifications)
SQC1 - opening limit switch
SQT1 - closing limit switch
SQC2 - opening track switch
SQT2 - closing track switch
PHE – position sensor (the type of a position sensor and
the number of conductors is specified in the technical
specifications)
Note:
1. Analogical electric wiring diagram of an electric drive
shall also be performed when using a connector.
closed contact
opened contact
2. A designation according to national standards, for
example U, V, W, or R, S, T instead of A, B, C
designation, shall be admitted.
-125-
Electric wiring diagram of a regulating valve for using under the casing of a nuclear power
plant reactor
(with output higher than 7.5 kW)
Operation diagram of track and limit switches
Appendix No. 10
M – three-phase asynchronous electric motor
SQFC1 - opening torque switch
SQFT1 - closing torque switch
SQC1 - opening limit switch
SQT1 - closing limit switch
SQC2 - opening track switch
SQT2 - closing track switch
PHE – position sensor (the type of a position sensor and
the number of conductors is specified in the technical
specifications)
Note:
1. Analogical electric wiring diagram of an electric drive
shall also be performed when using a connector.
closed contact
opened contact
2. A designation according to national standards, for
example U, V, W, or R, S, T instead of A, B, C
designation, shall be admitted.
-126-
Electric wiring diagram of an electric drive in a block and regulating valve for using inside the
casing of a nuclear power plant reactor
Operation diagram of switches
Appendix No. 10
M – three-phase asynchronous electric motor
SQFC1 - opening torque switch
SQFT1 - closing torque switch
SQC1 - opening limit switch
SQT1 - closing limit switch
SQC2 - opening track switch
SQT2 - closing track switch
PHE – position sensor (the type of a position sensor and
the number of conductors is specified in the technical
specifications)
Note:
1. Analogical electric wiring diagram of an electric drive
shall also be performed when using a connector.
closed contact
2. A designation according to national standards, for
example U, V, W, or R, S, T instead of A, B, C
designation, shall be admitted.
opened contact
-127-
Electric wiring diagram of an electric drive in a block and regulating valve for using under the
casing of a nuclear power plant reactor
(with output no higher than 7.5 kW)
Operation diagram of switches
Appendix No. 10
M – three-phase asynchronous electric motor
SQFC1 - opening torque switch
SQFT1 - closing torque switch
SQC1 - opening limit switch
SQT1 - closing limit switch
SQC2 - opening track switch
SQT2 - closing track switch
PHE – position sensor (the type of a position sensor and
the number of conductors is specified in the technical
specifications)
Note:
1. Analogical electric wiring diagram of an electric drive
shall also be performed when using a connector.
closed contact
opened contact
2. A designation according to national standards, for
example U, V, W, or R, S, T instead of A, B, C
designation, shall be admitted.
-128-
Electric wiring diagram of an electric drive in a block and regulating valve for using under the
casing of a nuclear power plant reactor
(with output higher than 7.5 kW)
Operation diagram of switches
Appendix No. 10
1
2
Inductive powder
3
4
PG – SR2 - M
GOST 21448 – 75
5
6
7
PR – N77Ch15S3R2 TP 14 – 1 – 3785 - 84 40 - 50 565 120
PR – N73Ch16S3R3
Notes: 1.With the lowest hardness, marked as +), in the drawing and technological documentation the upper hardness limit is given in dependence
on the weld deposit volume and thermal processing mode.
2. In the cases, stated in the drawing and technological documentation, with the particular types of valves the decreasing the weld deposit
surface hardness compared to the data in the table is allowed, however at most by 3 HRc with at least three-layer weld deposits and at
most by 5 HRc with one-layer and two-layer weld deposits and weld deposits under the scab.
12.3.24. Test samples of the control valve are submitted to testing for setting the permeability coefficient Kv, t/hour and scanning the
consumption characteristic according to the methodology stated in the testing program of the tested samples.
-129-
Appendix No. 11
Allowed materials for valves basic details utilization
Material
identification
Country –
valves
manufacturer
11 416.1
CSSR
12 020.1
CSSR
170247.4
CSSR
12 040.4
CSSR
1.4541
CSSR
C 25 N
KX8 CrNiTi 18.10
GS-C 25 N
Č. 1572
SRN
SRN
SRN
SFRJ
Č. 1331
SFRJ
Semi-product
sort
forgings, calandared
products
forgings, calandared
products
forgings, calandared
products
forgings, calandared
products
forgings, calandared
products
forgings
forgings
casts
forgings , ESP semiproduct
forgings
Chemical composition
standard
Approval sheet to
utilization
CSN 4114166
Soviet analogue
material
(according to
composition)
20
Approved on 27.4.79
CSN 412020
20
Approved on 27.4.79
CSN 417247
08Ch 18N 10T
Approved on 27.4.79
CSN 412020
There isn’t
analogue
08Ch 18N 10T
Approved on 27.4.79
TGL 6547
TGL 7743
TGL 7458
JUS C.B 9.002
25
08Ch 18N 10T
25 L
08Ch 18N 10T
Approved on 3.2.84
Approved on 3.2.84
Approved on 3.2.84
Approved on 28.9.84
JUS C.B 9.021
20
Approved on 21.3.77
-130-
Approved on 27.4.79
Appendix No. 11
Connection material for flanged connections
Material
identification
Country –
valves
manufacturer
15 236.3
CSSR
15320.9
CSSR
17335.4
CSSR
17335.9
CSSR
12040.6
CSSR
24CrMoV5.5V
SRN
24CrMo5V
SRN
1.4923
SFRJ
1.4986
SFRJ
Semi-product
sort
forgings, calandared
products
forgings, calandared
products
forgings, calandared
products
forgings, calandared
products
forgings, calandared
products
forgings, calandared
products
forgings, calandared
products
forgings, calandared
products
forgings, calandared
products
Chemical composition
standard
Approval sheet to
utilization
CSN 4415236
Soviet analogue
material
(according to
composition)
25ChMF
Approved on 2.4.79
CSN 425320
25ChMF
Approved on 2.4.79
CSN 417335
ChN35VT
Approved on 2.4.79
CSN 417335
ChN35VT
Approved on 2.4.79
CSN 412040
Approved on 2.4.79
TGL 7961
There isn’t
analogue
25ChMF
TGL 7961
25ChM
Approved on 3.2.82
DIN 17240
15Ch 11MF
Approved on 28.9.84
DIN 17240
There isn’t
analogue
Approved on
218.9.84
-131-
Approved on 3.2.82
Appendix No. 12
Materials used for facing by welding of sealing and leading surfaces in the valves
Welding
method
1
Automatic with tape
electrode under the
welding flux
Automatic with
welding wire under
the welding flux
Manual metal arc
welding
Material
2
Tape
Welding
flux
Welding wire
Welding flux
Welding wire
Welding flux
Covered
electrodes
Materials
Mark (sort, quality class)
3
15Ch18N12S4T10
(EI 654)
PKNL - 128
Standard, TP
4
TP14-1-1073-74
Allowed hardness of
weld deposit upper
coat, HRc
Allowed operative conditions
Operative
Middle measuring
temperature
pressure, MPa
0
C
5
>28 +)
6
565
7
80
TP 108.1327-85
SV-04Ch19N9S2
PKNL - 17
SV-10Cgh18N11S5N2T10
AN-26S
OF-6
FC-17
CN-2
(typ E-19K62Ch29V5S2)
CN – 6L
(typ E-08Ch17N8S6G)
CN-12M, CN-12L
(typ E-13Ch16N8M5S5G4B)
CN-24
GOST 2246-70
TP 108.1327-85
TP14-1-2656-79
GOST 9087-81
GOST 5.9206-75
TP 108.794-78
GOST 10051-75
>28 +)
565
80
>23 +)
(original phase)
>28 +)
(after annealing)
40-50
565
80
600
120
GOST 10051-75
>28 +)
565
120
GOST 10051-75
38 - 50
600
120
>23 +)
565
50
VPN-1
(typ E-09Ch16N9S5G2M2FT)
GOST 10051-75
>23 +)
565
50
-132-
Appendix No. 12
Welding
method
1
Arc welding under
argon
Materials
Material
Operative
temperature
0
C
3
rods
Pr-V3K
4
GOST 21449-75
argon
Welding wire (rods)
argon
Higher and 1. class
SV-10Ch18N11S5G2M2FT
Higher and 1. class
GOST 10157-79
TP 14-1-2656-79
GOST 10157-79
With plasma
rods
acetylene
oxygen
powder
GOST 21449-75
GOST 5457-75
GOST 5583-78
GOST 21448-75
TP 14-1-3785-84
Induction welding
argon
powder
Pr-V3K
PG-SR3-M
PR-N77Ch15S3R2
PR-N73Ch16S3R3
Higher and 1. class
PG-SR2-M
PR-N77Ch15S3R2
PR-N73Ch16S3R3
With gas
2
GOST 10157-79
GOST 21448-75
TP 14-1-3785-84
-133-
Allowed hardness of
weld deposit upper
coat, HRc
Allowed operative conditions
Operative
Middle measuring
temperature
pressure, MPa
0
C
5
40 - 50
6
600
7
120
>23 +)
(original phase)
>28 +)
(after annealing)
40 - 50
600
20
40 - 50
565
120
40 - 50
565
120
Appendix No. 12
Notes:
1. The upper hardness limit, in cases of minimal hardness marked as +), is described depending on volume of weld deposit and
depending on thermal treatment regimes in drawing and technological documents.
2. In mentioned drawings and technological documents, is possible to allow decreasing the weld deposit´s surface hardness of
individual valves in comparison with data mentioned in the table, but not more than the 3 HRC in cases of 3-layered weld
deposit and 5 HRC in cases of 1 or 2-layered weld deposit and weld deposit under tapping.
12.3.24 Test samples of the control valves shall be subjected to tests to determine the permeability coefficient Kv, t/hr and scanning
of consumption characteristics according to methodology, mentioned in a test program of test samples
-134-