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APPLICATION OF KKS CLASSIFICATION
SYSTEM FOR TURBINE AND ITS
INSTRUMENTATION AND CONTROL
(B S Rana)
Rev
Date
Prepared By :
(K B Batra)
Checked By :
(A Ali)
Approved By:
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1.0
INTRODUCTION
KKS system is a classification system for the complete power plant and its
components and provides a common
language for the designer, the
manufacturer and the user. This paper
provides an overview of KKS
application for turbine and its instrumentation and control system.
1.1
COMPLETE TAG/CODE NUMBER
Complete tag number for any component is of the form :
AAANN
----------Function
Key
A A N N N (A)
----------- ---
AANN
---------
Equipment Process Equipment
Key
Key
A : Alphabetic symbol
N : Numeric symbol
(A) : Optional
2.0
FUNCTION KEY
2.1
FIRST LETTER OF THE FUNCTION KEY
The meaning of the first letter of the function key can
following list.
be seen from the
A = Alphabetic symbol
N = Numeric symbol
AAANNAANNN
Example
A
B
C
D
E
F
G
H
I
K
L
MAA50 CP001
Grid and distribution plant
Unit main and auxiliary current supply system
Parts of instrumentation and control
Conventional fuel and ash handling
Handling of nuclear technical parts
Water supply and drainage
Conventional heat generation system (Boiler)
Nuclear heat generation
Nuclear auxiliaries
Steam, condensate and gas cycle
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M
N
P
Q
S
U
X
2.2
Main machinery (turbine, generator etc.)
Process energy distribution (external)
Cooling water system
Auxiliaries
Ancillaries
Civil work
Large machinery
THE FUNCTION KEY "C.."
A A A N N A A N N N (cabinet for EHC module)
Example
C
CC
CCA
position HB 114)
Parts of instrumentation and control
Cabinets for binary signal conditioning and drive control
Drive control and binary signal conditioning
CJ
Unit coordinator level
CJJ
I&C Cabinets for turbine
CJN
Cabinets for generator voltage regulator
CW
Control stations
CWA
CX
2.3
CJJ02HB114
(train-1)
Main control desk
Local control stations
THE FUNCTION KEY "L.."
AAANNAANNN
Example
L
LA
LAB
L B A 1 0 C P 0 0 1 (Main steam pressure before stop valve-1)
Steam, condensate, gas cycles
Feed water system
Feed water piping system (from deaerator to boiler)
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LAD
LB
HP - heater
Steam systems
LBA
Main steam piping
LBB
Hot reheat piping
LBC
Cold reheat piping
LBE
Back pressure system
LBF
HP bypass system
LBG
Auxiliary steam system
LBH
Start up steam system
LBK
Process heat transfer
LBQ
HP extraction piping system
LBS
LP extraction piping system
LBT
LBU
Common blow-off piping
LBW
Seal steam system
LBX
Medium supply for control and protective units
LBY
Control and protective units
LC
Condensate system
LCA
Main condensate system
LCB
Main condensate pumping system
LCC
LP heating system
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2.3
THE FUNCTION KEY "M.."
AAANNAANNN
Example
M
MA
M A B 5 0 C P 0 0 1 (steam pressure behind blading IP- casing)
Main machinery
Steam turbine
MAA
H.P. turbine
MAB
I.P. turbine
MAC
L.P. turbine
MAD
Bearings
MAG
Condenser including flash boxes and measuring devices
MAJ
Air extraction
MAK
Power transmission between turbine & genr,
MAL
Turbine drain system
MAN
LP bypass system including injection water system
MAP
(only for nuclear power plants)
MAQ
Vent system
MAV
OIL system
MAW
Seal, heat and cooling system.
MAX
Control fluid system
MAY
Control and protective system
MB
Gasturbine plant
MK
Generator
MKA
shaft turning gear
Genarator casing inclusive stator and rotor
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MKC
Excitation
MKD
Bearings
MKF
Primary water cooling system
MKG
Gas turbine
MKQ
Exhaust gas system
KMW
Seal oil system
MKY
MY
MYA
2.5
Control and protective system
Control governing and protective equipment.
for steam turbine plant
THE FUNCTION KEY "P.." and X.."
A A A N N A A N N N
Example
P
PA
P G B 1 3 C T 5
0 2 (cooling water before oil cooler 2)
Cooling water system
Main cooling water system
PAA
Mechanical cooling water cleaning facilities
PAB
Pipe and canal system
PAC
Main cooling water pumps
PAH
Condenser cleaning system
PAL
Ventilation, evacuation
PG
Conventional closed cooling water system
PGB
C.W. for oil, control fluid cooler etc.
PGM
Secondary water for generator primary water cooler
XA
Boiler feed pump turbine
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2.6
The Numerical Symbols of the Function Key
A A A N N A A N N N
Example
M A A 0 0 E C 0 0
1 ( start-up program )
The numerical symbols of the different functions (systems or sub-systems)
are usually standardised in order to recognize the type of system valid for the
power plant concerned. Therefore in most of the cases the number is not
counted
continuously starting with 01,02,..
Examples for complete function keys are given in clause 3.10. For a detailed
listing of all function keys used for the turbine - generator sets it is referred to
the piping and instrumentation drawings and to the measuring point list.
00 For superordinated signification (as in the given example, start-up /
shut-down program for turbine) the 00 is used.
3.
Equipment Unit Key
3.1
The First Letter of the Equipment Unit Key
The meaning of the first letter of the equipment unit key can be seen from
the following list. The darkened
areas of
interest
for
I&C of the
turbogenerator set and are explained in more detail in the lists given under
3.2 ... 3.7.
A A A N N A A N N N
Example
M A X 5 1 C P
0 1 2 (trip fluid pressure)
A
Units (incl. drives.)
B
Tanks, heat exchangers, apparatus ...
C
Measuring circuits
D
Close Loop Control circuits
E
Processing of measured values
G
Electrical equipment (subdistributors etc.)
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H
I
3.2
Subassemblies of heavy machines
Nuclear subassemblies
The Equipment Unit Key "A."
A A A N N A A N N N
Example
A.
3.3
MA G 1
0 A A 0 0 1 (vacuum breaker valve)
Units incl. drives
AA
Valves
AN
Air exhauster, vacuum pumps
AP
Pumps
AZ
Overspeed governor, shaft position
The Equipment Unit Key "B."
A A A N N A A N N N
Example
B.
M A X
4 5 B Y 0
0 1 (hydr. speed governor)
Apparatus
BB
Vessels and tanks
BC
Heat Exchangers
BP
Flowing limitation
BT
Separators, filters
BY
Mechanically driven regulators
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3.4
The Equipment Unit Key "C."
AAANNAANNN
Example
C.
Measuring circuits
CD
Density measurements
CE
Electrical quantities
CF
Flow rate measurements
CG
Distance, length or position measurements
CL
Level measurements
CP
Pressure measurements
CS
Velocity, speed or frequency measurements
CT
Temperature measurements
CU
Combined quantities
CW
Weight force or mass measurements
CY
3.5
L B A 0 0 C F 0 0 1 (main steam flow)
Vibration or expansion measurments
The Equipment Unit Key "D."
AAANNAANNN
Example
D.
M Y A 0 1 D S 0 0 2 (speed controller of EHC)
Closed loop control circuits
DD
Density control circuit
DE
Control circuit for electrical quantities
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3.6
DF
Control circuit for flow
DG
Control circuit for distance/length
DP
Pressure control circuit
DS
Control circuit for speed/frequency
DT
Control circuit for temperature
DU
Control circuit for combined quantities
The Equipment Unit Key "E."
AAANNAANNN
Example
E.
M A Y 0 1 E P 0 0 1 (stress evaluator)
Processing of measured values
EA
Unit control
EB
Group control
EC
Subgrup control
EE
Subloop control
EG
Alarm logic
EP
Supervisory computer (e.g. stress evaluator)
EU
Combined proceesing of measured values
EY
Protective logic
EZ
Protection
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3.7
The Equipment Unit Key "F."
AAANNAANNN
Example
3.8
M K A 0 2 F E 0 0 1 load controller of EHC
F.
Measurements with special signal conditioning
FE
Electrical quantities (load)
FS
Speed /frequency
The Equipment Unit Key "G."
A A ANNAANNN
Example
G.
3.9
M A B 0 0 G B 0 0 1 (junction box for signals from IP –section)
Electrical equipment
GA
Subdistributor for drive-related binary transmitters
GB
Subdistributor for non-drive-related binary transmitters
GC
Subdisributor for analog transmitters
GF
Subdistributor general
The Numerical Symbols of the Equipment Unit Key
A A A N N A A N N N (A)
Example
MAA10 CT001 B
The number of the equipment unit consists of three digits. In most of the
cases it is counted continuously starting with 001, 002, ... But to avoid
confusion other ways of counting are also admitted. If required a last alpha
digit (in the example : B) is used to identify pilot valves, drives with
multiple power supply, double thermometers (as in the example) as sub-units
of a complete equipment unit.
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3.10
Examples for KKS Key (Main Components of the turbine, TSE)
HP casing
MAA
HP emergency stop valves
MAA10AA001
MAA20AA001
HP control valves
MAA10AA002
MAA20AA002
IP casing
MAB
Reheat stop valves
MAB10AA001
MAB20AA001
Reheat control valves
MAB10AA002
MAB20AA002
LP casing
MAC
Front
Front
Front
Front
bearing
bearing
bearing
bearing
of
of
of
of
HP casing
IP casing
LP casing
LP casing
MAD11
MAD12
MAD13
MAD14
Laek -off control valve
MAW50AA001
Gland steam condenser
MAW80
Air exhauster
MAW80AN001
Control fluid tank
MAX11BA001
Control fluid pumps
MAX16AP001
MAX16AP002
Overspeed governor
M Y A 1 0 A Z 0 0 1, 2
Shaft position
MYA10AZ011
Speed measuring device
M Y A 1 0 C S 0 11,12,13,14
Check valve cold reheat
LBC11AA001
LBC21AA001
Main steam pressure
LBA10CP001
Main steam temperature
LBA10CT001
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Cold reheat pressure
LBC11CP001
Cold reheat temperature
LBC11CT001
Hot reheat pressure
LBB10CP001
Hot reheat temperature
LBB10CT001
NR valves extr. 5
LBQ01AA001
LBQ01AA002
NR valves extr. 4
LBS14AA001
LBS14AA002
NR valves extr. 3
LBS13AA001
LBS13AA002
TSE indicator
MAY00CT910
TSE recorder 1
MAY00CT911
TSE recorder 2
4.
4.1
MAY00CT912
The Process Equipment Key
The First Letters of the Process Equipment Key
The meaning of the first letter of the process equipment key can be seen
from the following list. The boldened letters are of interest for I&C.
Example
A A A N N A A N N N(A)
AANN
MAA10
- B 0 1 (TSE sensor)
CT001A
K.
Mechanical process equipment
M.
Mechanical process equipment
Q.
Process equipment for I&C
QB Transmitter
QH Annunciation system
QN Controller
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QP Measuring instruments testing equipment
QR Differential pressure lines
QS Equalizing tank, flow chamber
QT thermometer wells
QU Converter
- . Electrical process equipment
----------------------------A
Modules and component assemblies
-B
Transducers from non-electric quantities
-C
Capacitors
-D
Delay equipment, memory
-E
Special facilities
-F
Protection equipment
-G
Generators, power supplies
-N
Annunciation system
-K
Relays, contactor
-N
Amplifiers, controller
-P
Measuring instruments, testing equipment
-Q
Power switching devices
-R
Resistances
-S
Circuit breaker
-T
Transformers
-U
Modulators, transducers
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-V
Tubes, semiconductor
-W
Transformer controller , wave guide
-X
Terminals, plugs
-Y
Electrically actuated mechanic equipment
-Z
Terminations, compensating equipment, filters, limiters
X. Used for signal identification code
( signals from a specific signal area, Ref. cl. 5.0)
Y. Used for signal identification code
( signals for a special application, input signal, Ref. cl. 5.0)
Z. Used for signal identification code
( gated signals from a specific signal area, Ref. cl. 5.0)
4.4
Ex. for Electrical Process Equipment at Main Components of the Turb.
A A A N N A A N N N (A) - A N N
1. Feedpump total
Feedpump pump
Feedpump E-motor
LAB10 AP001
LAB10 AP001
LAB10 AP001
-P01
-M01
2. Double thermocouple M A A 1 0 C T 0 0 1
Ist branch
MAA10CT001A -B01
2nd branch
MAA10CT001B -B01
Indicator
MAA10CT001
-I01
3. Position monitoring of valve
Main steam stop valve M
M
M
M
A
A
A
A
A
A
A
A
(several contacts)
1
1
1
1
0
0
0
0
A
A
A
A
A
A
A
A
0
0
0
0
0
0
0
0
1
1
1
1
-
S
S
S
S
1
2
6
7
1
1
1
1
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4.
Position switches at valves
Main
Main
Main
Main
steam
steam
steam
steam
stop
stop
stop
stop
valve
valve
valve
valve
Main
Main
Main
Main
steam
steam
steam
steam
control
control
control
control
M
M
M
M
A
A
A
A
A
A
A
A
valve
valve
valve
valve
M
M
M
M
A
A
A
A
1
1
1
1
0
0
0
0
A
A
A
A
1
1
1
1
C
C
C
C
G
G
G
G
0
0
0
0
0
0
0
0
C
C
C
C
G
G
G
G
0
0
0
0
0
0
0
0
1
1
1
1
B
C
D
E
0
0
0
0
2
2
2
2
-S11
-S21
-S61
-S71
A
A
A
A
-
S
S
S
S
1
2
6
7
1
1
1
1
5. Thermocouples
TSE
TSE
TSE
TSE
sensor
sensor
sensor
sensor
HP
HP
HP
HP
ESV 100 %
ESV 50 %
CTRV 100 %
CTRV 50 %
MAA10CT001A–B01
MAA10CT001B–B01
MAA10CT011A–B01
MAA10CT011B–B01
TSE sensor HP outer casing 100 % M A A 5 0 C T 0 0 1 A – B 0 1
TSE sensor HP outer casing 100 % M A A 5 0 C T 0 0 1 B – B 0 1
TSE sensor IP inner casing 100%
TSE sensor IP inner casing 100%
TSE sensor IP inner casing 100%
5.0
MAB50CT011
M A B 5 0 C T 0 1 2 (spare)
M A B 5 0 CT 0 1 3 (spare)
SIGNAL IDENTIFICATION CODE
It
is
used for identifying all process
signals
used
in control and
instrumentation system. This code occupies
the position of the process
equipment key as indicated below.
AAANN
AANNN AANN
-------Signal ID code
Signal identification code is based
application area as described below.
5.1
either
on
signal (source) area or on
SIGNAL AREA
Initial character is X or Z
X.
Z.
Signals from a specific signal area
Gated signals from a specific signal area
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.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
A
B
C
G
H
J
K
L
M
N
P
Q
R
S
T
V
W
Functional group control/subloop control
Control interface
Conventional closed loop control
Binary process signals conditioned via transmitter modules
Analog process signals conditioned via limit value monitor modules
Signals not coming from specified areas
Signals from protection systems, Iskamatic C
Control room and control stations
Non floating individual and group alarms
Status display computer/criteria indication
Supervisory computer/process computer
Analog signals
Major closed-loop controls
Step signals from FGC
Turbine insrumentation and control
Protective logic
Hard-wired alarm system
Serial numbers within a signal area are sequentially numbered from 1 to 99.
Examples :
Shaft vibrations
Temp. HP casing Top 50%
Oil tank level
Auxiliary oil pump
Fire prot 1 chan 1
Limit pressure operation
5.2
< max
> 100 C
> min
on
operated
on
MAA00 EC001 ZA09
MAA50 CT053A XH52
MAV10 CL001 XG02
MAV22 AP001 XB01
MAY00 EY001 ZV52
MYA01 DU001 XT37
APPLICATION AREA
Application refers to the destination of the signal and the initial character is Y.
Y.
Signals for special application
YA
YB
YC
YJ
YK
YL
YN
YP
YQ
YR
YT
YV
YW
Functional group control/subloop control
Control interface
Conventional closed loop control
For unspecified applications
Protection systems, Iskamatic C
Control room and control stations
Status display computer/criteria indication
Supervisory computer/process computer
Analog applications
Major closed-loop controls
Turbine instrumentation and control
Protective logic
hard-wired alarm system
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Serial numbers within an application area are sequentially numbered from 1 to
99.
Examples :
Auxiliary oil pump 1
Lube oil pressure
Power setpoint
HP ESV 1
on
too low
raise
100 %
MAV22 AP001
MAV10 EG001
MYA01 DU001
MAA00 EC002
YB21
ZV06
YT35
YL16
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