HGST-San Jose
Mechanical Standard
Facilities Engineering
Division 15 Mechanical
Section 15352
DEIONIZED WATER PIPING
PART 1
1.1
1.2
GENERAL
SECTION INCLUDES
A.
This specification covers the technical material requirements, fabrication, erection, and
field pressure test of cold D.I. Water (temperatures less than 100F) and hot D.I. Water
(100F and above).
B.
This specification conforms to the American Society of Mechanical Engineers Code for
Pressure Piping, ASME B31.3, "Processing Piping.”
C.
ASTM, ASME, etc., codes and standards are listed in Appendix E of ASME B31.3 and in
Paragraph 1.3 of this specification.
D.
The words "HGST" or "HGST's representative" as used in this section shall mean HGST
or a representative designated by HGST to act on behalf of HGST.
E.
All piping material and installation methods to be in conformance with City of San Jose
requirements.
RELATED SECTIONS
This Section shall be used in conjunction with the following other sections and related Contract
Documents to establish the total requirements for the referenced Deionized Water Piping.
1.3
A.
Section 15140 - Hangers and Supports
B.
Section 15245 - Vibration and Isolation
C.
Section 15260 - Piping Insulation
D.
Section 15515 - Hydronic Specialties
CODES, SPECIFICATIONS, AND STANDARDS
All services shall be provided and all equipment and materials shall be designed, furnished, and
tested, in accordance with the applicable documents as referenced herein and listed below.
Specific editions, when identified, shall be used. When a specific edition is not identified, the
latest edition including addenda, in effect at the time of application shall be used.
A.
American Society of Mechanical Engineers (ASME)
B16.5 Pipe Flanges and Flanged Fittings
B31.3 Process Piping
B.
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American Society for Testing and Materials (ASTM)
A126 Gray Iron Castings for Valves, Flanges, and Pipe Fittings
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Division 15 Mechanical
A182 Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts
for High-Temperature Service
A193
Alloy-Steel and Stainless Steel Bolting Material for High-Temperature Service
A194 Carbon and Alloy Steel Nuts for Bolts for High-Pressure and High-Temperature
Service
A240 Heat-Resisting Chromium and Chromium-Nickel Stainless Steel Plate, Sheet,
and Strip for Pressure Vessels
A270
Seamless and Welded Austenitic Stainless Steel Sanitary Tubing
A312
Seamless and Welded Austenitic Stainless Steel Pipe
A351
Steel Castings, Austenitic, for High Temperature Service
A395 Ferritic Ductile Iron Pressure - Retaining Castings for Use at Elevated
Temperatures
A403
Wrought Austenitic Stainless Steel Piping Fittings
D1784 Rigid Poly Vinyl Chloride (PVC) Compounds and Chlorinated Poly Vinyl
Chloride (CPVC) Compounds
D1785 Poly Vinyl Chloride (PVC) Plastic Pipe, Schedules 40, 80 and 120
D1888 Particulate and Dissolved Matter in Water (Discontinued 1989)
D2467 Socket-Type Poly Vinyl Chloride Plastic Pipe Fittings, Schedule 80
D2837 Obtaining Hydraulic Design Basis for Thermoplastic Pipe Materials, Method For
Hydrostatic Design Basis
D3222 Polyvinylidene Fluoride (PVDF) Pipe and Fittings
D4101 Polypropylene (PP) Pipe and Fittings, SDR II or 150 psi
C.
American Water Works Association (AWWA)
C900 Polyvinyl Chloride (PVC) Pressure Pipe, 4 in. through 12 in. for Water
D.
Pipe Fabrication Institute
ES-3 Fabricating Tolerances
E.
Manufacturer's Standardization Society for the Valve & Fittings Industry (MSS)
SP-58 Pipe Hangers and Supports, Materials, Design and Manufacture
SP-69 Pipe Hangers & Supports, Design & Selection
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Division 15 Mechanical
F.
Sheet Metal and Air Conditioning Contractors' National Association
Seismic Restraint Manual Guidelines for Mechanical Systems
G.
International Conference of Building Officials (ICBO)
Uniform Building Code (UBC)
H.
The International Society For Measurement and Control (ISA)
S20
I.
Specification Forms for Process Measurement and Control Instruments, Primary
Elements and Control Valves
City of San Jose Codes
Uniform Building Code: (UBC), latest edition adopted by the City of San Jose.
Uniform Plumbing Code: (UPC), latest edition adopted by the City of San Jose.
Uniform Mechanical Code: (UMC), latest edition adopted by the City of San Jose.
State of California Administrative Code (CAC), Title 17.
Other Codes and Regulations as specified by HGST.
J.
1.4
HGST Y2K Compliance Specifications
MATERIAL DELIVERY, STORAGE AND HANDLING
A.
Delivery
The Contractor shall ensure that all material is delivered to the job site in a new and
undamaged condition. The Contractor shall submit manufacturer’s catalog sheets,
engineering data, and installation instructions for all materials to be used.
NOTE:
B.
The Contractor shall notify the HGST Construction Coordinator to arrange for
delivery of each shipment item to include any and all facilities, e.g., cranes,
rigging etc., required for unloading and installation of system components.
Receiving Inspection
Each shipment shall be checked by the Contractor to verify that:
•
•
•
•
Material is undamaged,
material supplied agrees with the packing list,
material is properly identified, and
materials are properly packaged with the packaging intact.
Pipes, valves and fittings will be carefully unloaded by hand or by using slings made of
nonmetallic (for example, nylon) material. Pipes, fittings and valves will be stored
indoors and protected against any contamination until installed.
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Division 15 Mechanical
All pipes, fittings, valves and piping specialties for use in D.I. Water System will be
inspected by HGST representative. Any material that is not in conformance with this
specification or the material shows evidence of contamination will be removed from the
job site at Contractor’s expense. All materials must be new. No reused material will be
installed in any part of the work.
1.5
CLEANING AND PACKAGING
A.
Cleaning and Packaging
All components in Deionized Water service shall be cleaned to a level such that there is
no visible contamination. All materials shall come from the supplier cleaned for
microelectronic service and sealed in plastic bags where appropriate, e.g., valves, fittings.
All piping shall come from the supplier clean and capped at both ends. All openings and
appurtenances for equipment, instruments shall be capped and/or sealed, for example,
blind flange, to prevent contamination/ingress of debris. All packaging shall be adequate
to protect the cleaned materials from contamination during shipment and storage.
B.
Special Cleaning and Packaging Requirements
Special Cleaning and Packaging requirements beyond that specified in the preceding
paragraph will be noted on the Contract Documents as applicable.
1.6
DEVIATIONS
Any deviations from the materials, fabrication, cleaning, and testing requirements shall be
approved in writing by HGST.
PART 2
2.1
2.2
PRODUCTS
MATERIALS
A.
This section contains the specific requirements of the materials of construction for D.I.
Water piping systems, and covers the specific types of components to be used.
B.
Manufacturer's names and model numbers are to establish quality and design.
"APPROVED EQUAL" substitutions may be made as long as they are approved in
writing by HGST.
C.
Unless otherwise specified, all pressures and temperatures listed are design conditions.
DESIGN AND CONSTRUCTION
Materials for Deionized Water Piping shall be as specified on the following pages. PVDF shall
be used on all applications unless explicitly stated otherwise on the Drawings. Alternative
materials could be used for specific projects however they must be pre-approved by HGST in
advance and limited to those applications that are clearly specified on the Project Documents.
The Contractor shall submit detailed shop drawings of all the equipment and other accessories
shown on the Drawings and/or specified herein to a minimum of 1/4” scale.
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Division 15 Mechanical
2.2.1
POLYVINYLIDENE FLUORIDE (PVDF) COMPONENTS
Polyvinylidene Fluoride (PVDF): Pipe, fittings and valves shall be manufactured from a
natural polyvinylidene fluoride (PVDF) material that has a minimum tensile strength of
7000 psi at 73F when tested in accordance with ASTM D638 and a minimum flexural
modulous of 22,700 psi at 73F when tested in accordance with ASTM D790, for waters
at temperature below and above 100F.
2.2.1.1 Pipe
1/2” - 9” PVDF pipe, pressure rated at 150 psig at 68 F, per ASTM D 2837
(Minimum Service Factor 0.5). George Fischer "SYGEF HP”, Asahi America
"Super Proline 230" for 1/2" to 2-1/2", Asahi America "Super Proline 150" for
1/2" to 9", or approved equal. Pipe shall be manufactured in a Class 10,000
cleanroom environment, provided with end-caps and sealed in double-walled
polyethylene bags prior to leaving the cleanroom environment.
NOTE: See polypropylene lined steel (PPLS) for long runs and/or outdoor
applications as indicated on design drawings.
2.2.1.2 Fittings
1/2” - 9” PVDF fittings suitable for infrared butt fusion joints with pressure
rating(s) equal to that of the specified pipe. George Fischer "SYGEF", Asahi
America "Super Proline 230" for 1/2" to 2 1/2", Asahi America Super Proline
150" for 1/2" to 9", or approved equal.
2.2.1.3 Joints
All PVDF joints shall be made in a Class 10,000 Clean Room environment
(Federal Standard 209E). All fusion bonded component of each given size
shall be the product of a single manufacturer. Components from different
manufacturers shall not be bonded together. All connections between
dissimilar plastic compounds (such as different manufacturer and/or different
compounds) shall be flanged with flange adapters as described below.
NOTE 1:
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Piping shall be sectionalized with flange joints for future retrofit
work as indicated on drawings. Straight pipe runs shall have
flanges installed at a minimum of every two pipe lengths as
supplied by manufacturer.
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Mechanical Standard
Facilities Engineering
Division 15 Mechanical
2.2.1.4 Valves (general)
All valves used for Deionized Water service will be assembled in a Class 100
cleanroom. Valves and fittings used for Deionized Water service shall be
cleaned in a Class 1,000 cleanroom by repeated rinsing with cold deionized
water with a minimum resistivity of 15 Meg-ohm preceded by one rinse with
hot deionized water (140F). Valves and fittings shall then be dried with
HEPA filtered air and visually inspected for imperfections and cleanliness.
Those components without visible imperfections or visible contamination shall
then be sealed in double-walled polyethylene bags. Markings and labeling
shall not be applied to the valves or fittings but the exterior of the bags. Labels
shall contain all information to identify each component and allow tracing to
production lots.
2.2.1.5 Diaphragm Valves
1/2” - 2 1/2” PVDF, bead and crevice free, weir-style, self draining. Rated at
100 psig or greater at 100F, 75 psig or greater at 175F. All fittings shall be
PVDF infrared fusion (IR fusion) fittings meeting ATSM D 2657 with glass
filled polypropylene bonnet. Teflon PTFE diaphragm seals backed with
EPDM. ASTM A 193, B8 with ASTM A 194 Grade 8 nuts. George Fischer or
approved equal.
2.2.1.6 Butterfly Valves
21/2" to 12" Lug type, powder coated ductile iron body, ASTM A395, rated for
150 psig at 200F, (90 psig maximum differential pressure for 12" and above),
machined PTFE liner with resilient elastomer back-up rod and one-piece
stainless steel disc and stem encapsulated in PFA Teflon. Lever operator thru
6" size for manual valves, gear operator for 8" and above. Neotecha or
approved equal.
2.2.1.7 Needle Valves (Use for low volume flow control)
1/4” - 1/2” PVDF with PTFE Teflon valve seal, 100 psig or greater at 100F.
George Fischer Type 522 or approved equal.
2.2.1.8
Wafer Check Valves
2" to 12" Dual Plate Flanged Check Valve, PVDF body and disc with IR
Fusion or Class 150 flanged ends. Rated for 100 psig or greater at 100F.
Technocheck or approved equal.
NOTE:
2.2.1.9
Optional ball check valve for applications pre-approved by HGST.
Pressure Reducing Valves
3/8” - 4” PVDF pressure reducing valve, with all PVDF body, IR Fusion or
Class 150 flanged ends, Teflon PTFE seals, 150 psig pressure rating at 140F.
Spring loaded, minimum pressure differential of 3 psig between inlet and
outlet. George Fischer V782 or approved equal. ISA (International Society for
Measurement and Control) data sheet(s) per ISA S20 shall be generated for
each control valve and pressure reducing valve.
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2.2.1.10 Valve Actuation
On-off actuators for control valves will be pneumatic or electric, double acting
type. Stroke times for opening and closing shall be shown in drawings.
Electric actuators shall have NEMA 4 enclosure (More restrictive types of
enclosure shall be specified on the drawings if required due to the electrical
classification of the area). Pneumatic actuators shall be designed for operation
on 80 psig air supply. Valve and actuator (including air set) shall be
preassembled. Actuator shall have the manual override capability. Keystone
or approved equal. Actuator shall be certified by the valve manufacturer as
suitable for the applicable valve.
2.2.1.11 Flange Adapters (Special Applications)
1/2” - 12” Ductile iron, galvanized steel or steel-coated PVDF (preferred),
ASME B16.5, class 150 drilling, George Fischer, Asahi America or approved
equal.
NOTE:
Steel-coated PVDF is required for use within Clean Rooms.
2.2.1.12 Gaskets
1/2” - 8” EPDM gasket encapsulated in PTFE Teflon. Low torque type with
convex sealing surface ASAHI America AV or approved equal.
1/2” - 12” PTFE full face, 1/8" thick, Garlock Gylon 3500 or approved equal.
(Use for high pressure and/or Clean Room applications).
2.2.1.13 Bolts
Machine bolts, 304 stainless steel, ASTM A 193, grade B8 with ASTMA A
194 grade 8 nut.
Cap screws, 304 stainless steel, ASTM A 193, grade B8. Note - Use at lug
type butterfly valves.
2.2.2
316L STAINLESS STEEL (USE FOR HIGH PRESSURE SYSTEMS)
Type 316L stainless steel shall be used for D.I. Water systems at pressure above
150 psig, for example, pump discharges, or as required for D.I. Water
components exposed to sunlight (See also PPLS and PVDF).
General Material:
316L Stainless Steel
Temperature Limit:
-20F through 400F
Maximum Pressure:
Per ASME B16.5
Corrosion Allowance:
None
2.2.2.1 Pipe
1/2” - 12” Seamless or welded 316L stainless steel, ASTM A 312, Grade
TP316L Schedule 5S, (Class 150) interior shall match ASTM A 270 finish T
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Division 15 Mechanical
(electropolished). The pipe will be seamless or welded, redrawn and bright
annealed. The interior surface will be free from mechanical defects such as
scratches and nicks. The pipe will be electropolished and passivated and the
interior surface finish will be uniform and bright with no areas of discoloration,
corrosion, streaks or demarcation.
2.2.2.2 Pipe Flanges
1/2” - 12” Class 150 raised face, stainless steel ASTM A 182, Grade F316L,
schedule 5S bore, (Class 150) weld neck type per ASME B16.5, interior shall
match ASTM A 270 finish T (electropolished).
2.2.2.3 Tube
1/4” - 3” Seamless or welded 316L stainless steel, ASTM A 270, Grade
TP316L, 0.065" thick wall, (Class 150) finish T (electropolished). The interior
surface shall be free from any mechanical defects such as scratches and nicks.
The tubing shall be electropolished and passivated and the interior surface finish
will be uniform and bright with no areas of discoloration, corrosion, streaks or
demarcation. The tubing shall come from the supplier capped and sealed.
2.2.2.4 Fittings
1/2” - 12” Schedule 5S, (Class 150), buttweld stainless steel, ASTM A 403,
Grade WP316L, interior shall match ASTM A 270 finish T (electropolished).
1/4” - 3” Seamless or welded stainless steel tube fabricated from ASTM A 270,
Grade TP316L, 0.065" thick wall, (Class 150) interior shall match ASTM A 270
finish T (electropolished), buttweld ends suitable for orbital welding (For In-Line
use).
1/4” - 1/2” 316 stainless steel compression type tube
fittings, Swagelok or approved equal (For use in connecting to instruments).
2.2.2.5 Flex Hoses
1/2” - 6” Corrugated 316L stainless steel connector, with stainless steel braid
and Class 150 end flanges. Flexonics or approved equal. Note - Select
appropriate Flexonics model, based on temperature and pressure rating, for use at
pump connections.
2.2.2.6 Valves (General)
Manual and automatic line valves shall be diaphragm-type for sizes 3” and
smaller and butterfly-type for sizes 4” and larger. All valves shall be nonlubricated. All connectors shall be stainless steel. All control valve actuators
and air sets shall be pre assembled ready for installation.
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NOTE 1:
ISA (International Society for Measurement and control) data sheet
per ISA 320 shall be generated for each control valve and controller.
NOTE 2:
Control valves shall be provided with bubble-tight isolation valves
for shut-off and maintenance purposes.
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Division 15 Mechanical
2.2.2.7 Diaphragm Valves
1/4” - 3”, 316L stainless steel weir-type diaphragm valve with Grade R2
Fluorlastic Teflon (PTFE) with EPDM backing cushion. Bodies shall be forged,
ASTM A182, or investment casted with Class 150 raised face flange (piping) or
buttweld ends suitable for orbital welding (tubing). Interior finish T
(electropolished), ASTM A270. Handwheel and bonnet shall be PAS
thermoplastic. Bonnet shall be vented and bolted to the body with stainless steel
bolts. ITT Engineered Valves or approved equal.
2.2.2.8
Butterfly Valves
4” - 12", Lug type, class 150, 1-piece cast 316 stainless steel, ASTM A 351,
grade CF8M, EPDM seats, stainless steel disc and stem. Valve shall be
designed for bubble tight shutoff. It shall have a locking lever operator.
Centerline, Grinnel, Keystone or approved equal. (Use for control valve
isolation on lines 4” and larger).
2.2.2.9
Ball Valves
1/2 - 2" 3 piece type, buttweld ends, Schedule 5S, 316 stainless steel body and
disc, ASTM A 351, grade CF8M, 316L stainless steel ends, ASTM A 351, grade CF3M, lever operated.
Whitey 40 series or approved equal. (Use for control valve isolation).
2.2.2.10 Needle Valve (Use for Control Valves)
1/4” - 3”, 316 stainless steel needle valve, integral bonnet, rising stem with
Class 150 raised face flange or buttweld ends, ITT Engineered Valve or
approved equal.
2.2.2.11 Wafer Check Valves
1" to 12" Dual Plate Wafer Check Valve, Class 150, 316 stainless steel
butterfly (ASTM A 351, grade CF8M) with ductile iron body Incolloy springs,
non-slam, Keystone, Technocheck or approved equal.
2.2.2.12 Ball Check Valves
1” - 3”, 316 stainless steel ASTM A-351 Grade CF8M, regular port, Y-pattern,
clamped bonnet, 316 stainless steel ball, stem and trim with Class 150 raised
face flange (piping) or buttweld ends (tubing). Technocheck, Whitey or
approved equal.
NOTE:
Install in horizontal or vertical pipe lines. When installed in vertical
pipe lines, flow must be upward.
2.2.2.13 Back Pressure Regulating Valves
1/2” - 4”, Back pressure regulating valves (at the end of supply line) will be a
type 316 stainless steel (ASTM A 351 grade CF8M) type globe control valve,
class 150 flanges. All valve packing and gaskets shall be Teflon TFE.
Reference: Fisher EZ control valve with a type 667 actuator, Masoneilan, or
approved equal.
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Division 15 Mechanical
2.2.2.14 Differential Pressure Controller
To be used in conjunction with the back pressure regulating valves shall be a
FISHER 4195B Gauge Pressure Indicating Controller with stainless steel
gauges and tubing connections.
2.2.2.15 Valve Actuation
On-off actuators for diaphragm and butterfly valves will be pneumatic or
electric, double acting type. Stroke times for opening and closing shall be shown in drawings. Electric
actuators shall have NEMA 4 enclosure (More restrictive types of enclosure shall be specified on the
drawings if required due to the electrical classification of the area). Pneumatic actuators shall be designed
for operation on 80 psig air supply. Valve and actuator (including air set) shall be preassembled.
Actuator shall have manual override capability. Actuator shall be certified by the valve manufacturer as
suitable for the applicable valve.
2.2.2.16 Gaskets
1/2” - 12” Aramid fiber with Nitrile rubber binder, flat ring, 150#, 1/16" thick,
Durable Durlon 8500 approved equal.
2.2.2.17 Thread Compounds (as applicable for tubing/instruments only)
Teflon tape or approved equal.
2.2.2.18 Bolts
Alloy stud bolt, ASTMA A 193 Grade B8 with two heavy hex nuts, ASTM A
194 Grade 8.
2.2.3 POLYPROPYLENE COMPONENTS (Special applications with pre-approval by
HGST)
General Material
Maximum Pressure
Temperature Limit
Corrosion Allowance
Polypropylene
See Individual Components
See Individual Components
None
2.2.3.1 Pipe (Use PPLS for long runs/outdoor applications)
1/2” - 12” Polypropylene pipe, pressure rated at 117 psig or greater at 100F, per
ASTM D 2837 (Service Factor 0.5). Butt-fusion type. George Fischer, Asahi
America Proline or approved equal.
1” - 12” Polypropylene lined steel, ASTM A513 C-1010, with chemical and
mechanical properties conforming to ASTM A587. 150 psig @ 200F, ASTM
F492. Pipe sizes 10” and 12” are to be steel ASTM A-53 Gr. B, type E. Pipe
sizes 1” thru 6” are Schedule 40 wall thickness. Sizes 8” thru 12” are Schedule
30 wall thickness. Pipe to be lined with polypropylene, conforming to ASTM
D4101.
2.2.3.2 Fittings
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Division 15 Mechanical
1/2” - 12” Polypropylene fittings shall be GF + Fusion system or approved
equal, with pressure rating(s) equal to that of the specified pipe. George Fischer,
Asahi America or approved equal. Note: Use "instrument tees" or "instrument
donuts" for branches to instruments.
1” - 12” Polypropylene lined steel, ASTM A216 Grade WCB or ASTM 105,
ANSI Class 150, conforming to the dimensional requirements of ANSI Standard
B16.5. Polypropylene shall comply with the requirements of ASTM F492.
Design conditions 150 psig at 200F.
NOTE:
All assemblies and fittings shall be banded with a permanently affixed
color coded nylon band to identify the liner material.
2.2.3.3 Joints
All fusion bonded components of each size shall be the product of a single
manufacturer. Components from different manufacturers shall not be bonded
together. All connections for dissimilar plastic compounds, for example,
different manufacturer and/or different compound, shall be flanged with flange
adapters as described below. Piping shall be sectionalized with flange joints for
future retrofit work (spacing interval is installation dependent).
2.2.3.4 Valves (General)
Manual and automatic line valves shall be diaphragm type for sizes 2” and
smaller and butterfly type for sizes 2 1/2” and larger. All valves shall be nonlubricated suitable for microelectronic service. All control valve actuators and
air sets shall be preassembled, ready for installation. Each control valve shall be
provided with isolation valves for maintenance purposes. Isolation valves shall
be designed for bubble-tight shutoff.
NOTE:
ISA (International Society for Measurement and Control) data sheet(s)
per ISA S20 shall be generated for each control valve and pressure
reducing valve.
2.2.3.5 Diaphragm Valves
1/2” - 3” Polypropylene, self draining. Rated at 150 psig or greater at 68F, 70
psig or greater at 140F. True union socket or socket ends for sizes 2" and under,
socket fusion spigot or flanged ends for sizes 2-1/2" and 3". Flanged ends to
match ASME B16.5 class 150 flat face drilling. Glass-filled polypropylene
bonnet. EPDM diaphragm, spring-loaded close. 304 SS bonnet bolting, ASTM
A 193, B8 with ASTM A 194 grade 8 nuts. George Fisher, Asahi America or
approved equal. Note - Temperature and pressure rating specified is for a George
Fischer valve. Check suitability for individual lines conditions by checking
manufacturer's ratings against line conditions.
2.2.3.6
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Butterfly Valves
4" to 12" Lug type, ductile iron, ASTM A 395, rated for 150 psig at 250F, (90
psig maximum differential pressure for 12" and above), Teflon PFA liner and
one piece stainless steel disc and stem, with Teflon PFA coating. All fluid
contact surfaces shall be Teflon PFA. Valve shall be designed for bubble tight
shut-off. Lever operator thru 6" size for manual valves, gear operator for 8"
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and above. Amri Acris 1 series, Grinnel NeoTecha, or approved equal. Note Temperature and pressure rating specified is for Grinnel NeoTecha valve.
Check suitability for individual lines conditions by checking manufacturer's
ratings against line conditions.
2.2.3.7
Check Valves
2" to 12" Dual Plate Flanged Check Valve, Polypropylene body and disc with
class 150 flanged ends. Rated for 160 psig at 70 F, 65 psig at 140F. Technocheck or approved equal.
2.2.3.8
Pressure Reducing Valves
3/8” - 4” Polypropylene pressure reducing valve, with polypropylene body,
class 150 flanged ends, Teflon PTFE seals, 150 psig pressure rating at 86F.
Spring loaded, minimum pressure differential of 3 psig between inlet and
outlet. George Fischer V782 or approved equal.
2.2.3.9
Valve Actuation
On-off actuators for diaphragm and butterfly valves will be pneumatic or
electric, spring loaded type. Stroke times for opening and closing shall be
shown in drawings. Electric actuators shall have NEMA 4 enclosure (More
restrictive types of enclosures shall be specified on the drawings if required due
to the electrical classification of the area). Pneumatic actuators shall be
designed for operation on 80 psig air supply. Valve and actuator (including air
set) shall be preassembled. Actuator shall have manual override capability.
Actuator shall be certified by the valve manufacturer as suitable for the
applicable valve.
2.2.3.10 Flange Adapters
1/2”- 12” Ductile iron, galvanized steel or PVDF-coated steel, ASME B16.5,
class 150 drilling, George Fischer, Asahi America or approved equal.
NOTE:
Use steel-coated PVDF for use within Clean Rooms.
2.2.3.11 Gaskets
1/2” - 12” 1/8” thick full face EPDM gaskets, ASME Class 150 drilling,
Harrington Plastics or approved equal.
2.2.3.12 Bolts
Machine bolts, 304 stainless steel, ASTM A 193, grade B8 with ASTM A 194
grade 8 nut.
Cap screws, 304 stainless steel, ASTM A 193, grade B8. Note - Use at lug
type butterfly valves.
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2.2.4
PVC COMPONENTS
General Material
Maximum Pressure
Temperature Limit
Polyvinyl Chloride (PVC)
See Individual Component Ratings
Derate above 73.4F per AWWA C900, Table
A-1
None
Corrosion Allowance
2.2.4.1
Pipe
1/2” - 12” PVC pipe, ASTM D 1785, PVC 1120, Schedule 80.
NOTE: All PVC pipe valves and fittings shall be cleaned prior to installation using a 5 percent
solution of MicroClean UHP (King Lee Chemicals). The solution shall be made using
DI water with a minimum resistivity of 16.5 Meg-ohm.
Pipe shall be cleaned inside and outside using clean room cloths and then dipped into the
MicroClean solution for at least one hour. The MicroClean solution shall be
continuously forced through the pipe during this time. The pipe shall then be rinsed with
DI water (of at least 16.5 Meg-ohm-cm quality) until the resistivity of the water leaving
the pipe is 0.1 Meg-ohm-cm. The pipe shall then be wiped inside and out using clean
room cloths and dried using 0.1 micron filtered nitrogen. Clean dry pipe shall be capped
on both ends or provided with plastic bag covers that are taped to the ends. Caps or bags
shall be removed just prior to installation.
2.2.4.2 Flanges
1/2” - 12” Solvent weld PVC flange, ASME Class 150 drilling, ASTM D 2467,
PVC, I, Schedule 80. Rated for 150 psig @ 100F.
2.2.4.3
Fittings
1/2” - 12” PVC, ASTM D 2467, schedule 80, PVC I, solvent weld type.
NOTE:
2.2.4.4
Mitered and threaded fittings and saddle adapters are not
permissible. Transitions to instruments or other equipment with
threaded connections shall be made using flanges.
Valves (General)
Manual and automatic line valves shall be diaphragm type for sizes 2” and
smaller and butterfly type for sizes 2 1/2” and larger. All valves shall be nonlubricated suitable for microelectronic service. All control valve actuators and
air sets shall be preassembled, ready for installation.
NOTE 1:
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ISA (International Society for Measurement and Control) data
sheet(s) per ISA S20 shall be generated for each control valve and
pressure reducing valve.
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HGST-San Jose
Mechanical Standard
Facilities Engineering
Division 15 Mechanical
2.2.4.5
Diaphragm Valves
1/2” - 3” PVC ASTM D 1784 Type 1, Grade 1, self
draining. Rated at 145 psig or greater at 100F. Socket true union ends for
sizes 2" and under, flanged ends for sizes 2 1/2” and 3”. Flanged ends to match
ASME B16.5 class 150 flat face drilling. EPDM diaphragm. 304 SS bonnet
bolting, ASTM A 193, B8 with ASTM A 194 grade 8 nuts. George Fisher,
Asahi America or approved equal. Note - Temperature and pressure rating
specified is for 3" George Fischer valve.
2.2.4.6
Butterfly Valves
2” - 12” 316SS full lug (threaded) body with EPDM liner, 150 psig @ 200F.
316SS disc, EPDM seats, NBR packing. Locking lever (10 position minimum)
operated for 2” - 6”, gear operated 8" and larger. 300 series SS bonnet/gearbox
bolting. Keystone Model 992 or approved equal.
2.2.4.7
Check Valves
2" to 12" Dual Plate Flanged Check Valve, PVC (ASTM D 1784, Class 1,
Type 1) body and disc with class 150 flanged ends. Rated for 100 psig at
100F. Technocheck or approved equal.
2.2.4.8
Pressure Reducing Valves
1/4” - 3” PVC pressure reducing valve, with PVC body, female threaded ends,
Buna-N seals, 150 psig pressure rating at 73 F. Spring loaded, adjustable to
outlet pressure of 5 to 50 psig. Note - Use factory fabricated nipples to thread
into valve. Plast-o-matic PR or approved equal.
2.2.4.9
Gaskets
1/2” - 12” EPDM, full face, double convex ring design with ANSI B16.5
dimensions. ASAHI/AMERICA Low Torque AV or approved equal.
2.2.4.10 Bolts
Machine bolt, ASTM A 193, grade B8 w/ASTM A 194, grade 8 hex nut ANSI
B1.1 and B18.2 Class 2B.
Cap screws, 304 stainless steel, ASTM A 193, grade B8. Note - Use at lug
type butterfly valves.
2.2.4.11 Thread Compound
Teflon Tape
Note: Threaded fittings are not allowed unless transition is to tubing or hose.
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Mechanical Standard
Facilities Engineering
Division 15 Mechanical
2.2.5
General Material
Maximum Pressure
Temperature Limit
Corrosion Allowance
2.2.5.1
CPVC COMPONENTS (For high temperatures >100F)
Polyvinyl Chloride (CPVC)
See Individual Component Ratings
Derate above 73.4F per AWWA C900, Table A1
None
Pipe
1/2” - 12” diameter: manufactured with CPVC meeting ASTM F 1784, and
meeting Schedule 80 dimensional tolerances of ASTM F441.
2.2.5.2
Flanges
1/2” - 12” diameter: solvent weld, Van-stone type, CPVC (ASTM F1784),
ASME Class 150 bolt-hole dimensions, Schedule 80 (ASTMF 439), Rated 150
psig @ 100F.
2.2.5.3
Fittings
1/2” - 12” CPVC, ASTM F439, Schedule 80, PVCI, solvent weld type.
NOTE: Mitered fittings are not permissible.
2.2.5.4
Valves (General)
Manual and automatic line valves shall be diaphragm type for sizes 2” and
smaller and butterfly type for sizes 2 1/2” and larger. All valves shall be nonlubricated suitable for microelectronic service. All control valve actuators and
air sets shall be preassembled, ready for installation.
NOTE:
2.2.5.5
ISA (International Society for Measurement and Control) data
sheet(s) per ISA S20 shall be generated for each control valve and
pressure reducing valve.
Diaphragm Valves
1/2” - 3” CPVC ASTM D 1784 Type 4, Grade 1, self draining. Rated at 145
psig or greater at 100F. True-union type with socket ends for sizes 2” and
under, flanged ends for sizes 2 1/2” and 3”. Flanged ends to match ASME
B16.5 class 150 flat face drilling. EPDM diaphragm. 304 SS bonnet bolting.
ASTM A 193, B8 with ASTM A 194 grade 8 nuts. George Fisher, Asahi
America or approved equal. Note - Temperature and pressure rating specified
is for 3” George Fischer valve. Check suitability for individual lines
conditions by checking manufacturer’s ratings against line conditions.
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Division 15 Mechanical
2.2.5.6
Butterfly Valves
2” - 12” cast iron full lug (threaded) body with EPDM liner, 150 psig @ 200F.
316SS disc, EPDM seats, NBR packing. Locking lever (10 position minimum)
operated for 2” - 6”, gear operated 8” and larger. 300 series SS bonnet/gearbox
bolting. Keystone Model 992 or approved equal.
2.2.5.7
Check Valves
2” to 12” Dual Plate Flanged Check Valve, CPVC (ASTM D 1784, Class 1,
Type 4) body and disc with class 150 flanged ends. Rated for 100 psig at
100F. Technocheck or approved equal.
2.2.5.8
Gaskets
1/2” - 12” EPDM, full face, double convex ring design with ANSI B16.5
dimensions. ASAHI/AMERICA Low Torque A V or approved equal.
2.2.5.9
Bolts
Machine bolt, ASTM A 193, grade B8 w/ASTM A 194, grade 8 hex nut ANSI
B1.1 and B18.2 Class 2B.
Cap screws, 304 stainless steel, ASTM A 193, grade B8. Note - Use at lug
type butterfly valves.
2.2.5.10 Thread Compound
Teflon Tape
2.2.6
PFA COMPONENTS (Special Applications Only)
Teflon Perfluoroaloxy (PFA): Pipe, fittings and valves and tube fittings shall be
manufactured from a Teflon PFA compound with a nominal melt point of 575 - 590 F, a
tensile strength of 4000 psi at 73F when tested in accordance with ASTM D790, for
water at temperature below and above 100F.
General Material
Maximum Pressure
Temperature Limit
Corrosive Allowance
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Teflon Perfluoraloxy (PFA)
See Individual Components
See Individual Components
None
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HGST-San Jose
Mechanical Standard
Facilities Engineering
Division 15 Mechanical
2.2.6.1
Pipe
1/4” - 2” Teflon PFA pipe, Schedule 40, ASTM D-1785 pressure rating to
match that of pipe, 80 psig at 100F for 2", butt fusion type ends. Fluoroware
Purebond or approved equal.
2.2.6.2
Pipe Fittings
1/4” - 2” Teflon PFA pipe, Schedule 40, pressure rating of 80 psig at 100F for
2", butt fusion type ends. Fluoroware Purebond or approved equal
2.2.6.3
Tube
1/4” - 1” Teflon 440HP PFA tube, minimum pressure rating of 75 psig at 100
F. Recommended bend radius of 11" or less, for joining with flare tube style
nuts. Fluoroware Fluoroline Ultrapure or approved equal
2.2.6.4
Tube Fittings
1/4” - 1” Teflon PFA tube fittings, flared tube style, minimum pressure rating
of 75 psig at 100F. Fluoroware Flaretek or approved equal.
2.2.6.5
Joints
All fusion bonded components of each size shall be the product of a single
manufacturer. Components from different manufacturers shall not be bonded
together. All connections for dissimilar plastic compounds, for example,
different manufacturer and/or different compound, shall be flanged with flange
adapters as described above. Piping shall be sectionalized with flange joints
for future retrofit work (spacing interval is installation dependent).
Note 1:
2.2.6.6
If valves are required in PFA systems in sizes above 1/4", use
gaskets, flange assemblies and bolting as listed to connect to valves
specified under "PVDF COMPONENTS" (with the approval of the
responsible HGST engineer).
Diaphragm Valves
1/4" Teflon PFA diaphragm valve with 1/4" butt fusion pipe ends, Teflon PFA
wetted parts. Rated at 60 psig cold working pressure. Fluoroware Galtek or
approved equal
2.2.6.7
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Needle Valves
1/4" Teflon PFA needle valve with 1/4" butt fusion pipe ends, Teflon PFA
wetted parts. Rated at 125 psig at 150F. Fluoroware Galtek or approved
equal.
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Mechanical Standard
Facilities Engineering
Division 15 Mechanical
2.2.6.8
Check Valves
1/4" Teflon PFA check valve with 1/4" butt fusion pipe ends, Teflon PFA
wetted parts, Kalrez O-rings. Rated at 125 psig at 150F. Fluoroware Galtek
or approved equal.
2.2.6.9.
Flange Assemblies
1/2” - 2” Teflon PFA flange adapter with butt fusion pipe ends, to be used with
flange rings specified under Section 2.2.1. Fluoroware Galtek or approved
equal.
2.2.6.10. Gaskets (See Note 1)
1/2” - 2” EPDM or Viton gasket encapsulated in PTFE Teflon. Low torque
type with convex sealing surface, Asahi America AV or approved equal.
2.2.6.11 Bolt (See Note 1)
Machine bolts, 304 stainless steel, ASTM A 193, grade B8 with ASTM A 194
grade 8 nut.
2.3
PIPE SUPPORT MATERIALS
A.
All pipe supports shall be manufactured and installed in accordance with MSS SP-69.
All support materials of construction shall conform to MSS SP-58.
B.
Pipe Hangers
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1.
Pipe hangers for individual horizontal lines shall be adjustable steel Clevis type,
Grinnel Fig. 260 with threaded steel hanger rods or approved equal. PVC pipe
requires a clevis width of 3" minimum.
2.
Support Rods - Provide continuous thread black finish hanger rods for clevis
hangers in accordance with the following table:
Pipe Size
Hanger Rod Size
Thru 2”
3/8”
2 1/2” to 3 1/2”
1/2”
4”and 5”
5/8”
6”
3/4”
8” to 12”
7/8”
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Mechanical Standard
Facilities Engineering
Division 15 Mechanical
C.
2.4
3.
Trapeze hangers may be used where practicable and where three or more pipes
run parallel in the same plane. Pipes shall be suspended using 1/2" diameter rods
(Contractor shall use the required number of rods per trapeze to meet the load
requirements.).
4.
Unistrut or Superstrut (chemical resistant materials required) slot channel with
pipes attached by universal pipe clamps and neoprene isolators shall be provided
at trapeze hangers and for all piping located in trenches. Horizontal piping
located on or against walls shall be supported per the previous sentence or by
individual pipe brackets.
5.
Insulated lines require an oversized clevis.
Insulation Guards
1.
Size hangers on insulated piping to fit outside the covering.
2.
Provide rigid insulation at support points per Specification 15260.
3.
Protect insulation from crushing at hanger locations with sheet metal pipe
saddles.
PRESSURE TESTING MATERIALS
A.
All pressure test materials shall be cleaned (and packaged if applicable) as stated in
Paragraph 1.5 A prior to use.
B.
Pressure Test Blinds
Use 1/4" thick 304 stainless steel blinds made per ASTM A 240 alloy lines, with 1/16
inch thick non-asbestos gaskets. However, where permanent operational blinds are
installed, they may be used for pressure testing.
C.
Miscellaneous Equipment
The Contractor shall furnish the pumps, gauges, measuring devices, temporary plug
valves, and the apparatus necessary for testing.
PART 3
3.1
EXECUTION
GENERAL
A.
All piping fabrication, erection, and testing shall conform to the requirements of ASME
B31.3.
B.
All materials to be used in deionized water systems shall be inspected upon receipt by
HGST's representative. Any material which is not in conformance with this specification
or the drawings, or shows evidence of contamination shall be removed from the site at
Contractor's expense.
C.
All materials shall be carefully unloaded by hand or by using slings made of Nylon. All
materials shall be stored indoors and protected against contamination until installed.
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Division 15 Mechanical
3.2
D.
Where applicable codes for supports of piping systems are more stringent than the
requirements specified here, those codes shall supersede these requirements.
E.
Sterilization: All new D.I. water system piping shall be sterilized as indicated herein.
FABRICATION
A.
Welding (Metallic Pipe & Tube)
All welders and welding procedures shall be qualified per ASME B31.3. Evidence of
such qualification shall be submitted to HGST. Weld examination and heat treatment
shall be in strict accordance with ASME B31.3.
B.
Welding & Bonding (Non-Metallic Pipe & Tube)
All fusion welders, and bonders shall be qualified per ASME B31.3. In addition, all
fusion welders and welding procedures shall be qualified and certified by the piping
material supplier. Evidence of such qualification shall be submitted to HGST.
C.
Internal Misalignment (Stainless Steel Components Only)
Where the ends of piping components are to be joined by welding and the internal surface
misalignment exceeds the dimensional limits of the qualified welding procedure, one of
the following procedures shall be used to correct this condition.
1.
2.
D.
Taper bore or grind the wall of the component extending internally using a 4 to 1
maximum taper. Such tapering shall not result in a finish wall thickness, before
welding, that is less than the nominal pipe wall thickness minus the
manufacturer's mill tolerance. Further reduction of the wall thickness requires
HGST's authorization.
Use spreaders or internal and/or external lineup clamps to correct moderate outof-round condition.
Flanges and Fittings
Flange bolt holes are to be oriented as follows, unless otherwise indicated on the
Drawings.
E.
1.
Flange face vertical - bolt holes to straddle vertical centerline.
2.
Flange face horizontal - bolt holes to straddle North-South centerline.
Cleanliness
Contractor shall submit his proposed method for maintaining cleanliness of the pipe
interior during pipe fabrication and erection activities. The procedure shall address
proposed methods of maintaining cleanliness during welding, fusion bonding, cutting,
and all other pipe erection operations. At a minimum, 0.1 micron filtered nitrogen will be
used to purge piping during fusion.
3.3
FABRICATION DIMENSIONAL TOLERANCES
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Division 15 Mechanical
Pipe fabrication tolerances shall be in accordance with Pipe Fabrication Institute ES 3.
3.4
3.5
ERECTION
A.
Bolts on stainless steel piping systems shall be lubricated with anti-seize compound
(Never Sees Regular Grade or approved equal) before tightening. Anti seize compound
shall not be used within clean room areas, or on plastic piping systems. Bolt torque
procedures shall be in accordance gasket manufacturer's recommendations. The
Contractor shall submit gasket manufacturer's suggested bolt torque procedures,
including recommended torque's.
B.
Piping shall be examined before erection to ensure that all foreign matter has been
removed.
C.
The Contractor shall be responsible for the proper horizontal and vertical alignment of
the piping as shown on the drawings.
SUPPORT OF PIPING SYSTEMS
A.
All pipe support components shall be installed in accordance with MSS SP-69.
B.
Where supports for piping are identified and located on the Piping Drawings, any
deviation from the specified location(s) shall be reviewed and approved by HGST prior
to erection.
C.
Maximum spacing for pipe supports (in feet) at all temperature for stainless steel systems
and at temperature below 100 F for plastic systems shall be as follows:
Type of Pipe
Pipe Size
(Inches)
Stainless Steel
Plastic PVC,
PVDF, PP
1/2"
10
3/4"
10
1"
10
1 1/2"
10
2"
10
2 1/2"
10
3"
12
4" & Larger
12
Continuous
4
4
4
4
4
4
Proposed allowable span charts for temperatures greater than 100 F shall be submitted to
HGST for approval. Criteria shall be a maximum allowable sag of 1" or 1/2" the nominal
pipe diameter, whichever is smaller, when filled with water at the design temperature of
the system.
D.
This table is for uniformly loaded spans. Additional support requirements for spans with
concentrated loads such as valves, etc. shall be the responsibility of the Contractor.
Supports shall allow for thermal expansion and contraction.
E.
Seismic Requirements
All piping shall be installed to withstand and maintain its structural integrity when
exposed to seismic loading intensity of Seismic Probability Zone 4 and Coefficient Value
of one (1) per UBC Standards. Follow applicable sections of this specification including
contract drawings and details in addition to applicable codes, latest Guidelines for
Seismic Restraint of Mechanical Systems and Plumbing Piping Systems by SMACNA
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Division 15 Mechanical
and HGST San Jose Mechanical Piping Specifications for Seismic Bracing dated October
26, 1985 (revised December 6, 1985). The most stringent requirements of all the above
shall apply.
F.
Seismic Support Design
Where seismic support detail for a particular piece of equipment, etc., is not available in
any of the above documents, the Contractor shall design the support per UBC, using
Seismic Probability Zone 4 and Coefficient value of (1). Seismic support design shall be
approved in writing by the responsible HGST engineer prior to
fabrication/implementation.
3.6
GENERAL REQUIREMENTS FOR PRESSURE TESTING
A.
Pressure test requirements of this specification Section applies to newly constructed
piping systems only.
B.
Prior to initial operation, all installed piping shall be hydrostatically tested following the
procedures in ASME B31.3 and using the test pressures and duration indicated below.
Initial service tests per ASME B31.3 shall not be used except where specifically
authorized by HGST.
C.
The Contractor shall prepare and submit a hydrostatic and pneumatic test procedure to
HGST for approval, including test diagrams, and test report format.
D.
HGST shall be notified at least 24 hours before commencement of pressure testing.
3.7
PRESSURE TEST OF VESSELS AND EQUIPMENT
Pressure Testing: Deionized Water piping shall be pressure tested for 24 hours as follows:
PVDF:
Stainless Steel:
Polypropylene:
PVC:
Teflon Pipe:
Teflon Tubing:
150 psig (68F.)
150 psig (68F.)
117 psig (100F.)
150 psig (68F.)
60 psig (68F.)
60 psig (68F.)
Test pressure shall be reduced if test temperatures are greater than shown. The test medium shall
be deionized water. Should defective piping be identified, it shall be replaced and testing
restarted.
Pressure testing shall only include piping, fittings, valves and other components through which
D.I. water will flow. All ancillary components which are required for the final system, and which
are not pressure rated, shall be disconnected from the piping prior to testing. Blind flanges or
plugs shall be used where this equipment was located.
The pressure on any point in vessels or equipment included in the pressure test shall not be
greater than the shop test pressure for that equipment as stated on the vessel drawing, vendor's
equipment drawing of specification sheets. In the event the piping test pressure is greater than the
vessel or equipment test pressure, the piping shall be disconnected, blinded and tested separately.
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Division 15 Mechanical
3.8
3.9
PRESSURE TEST PREPARATION
A.
All joints, including welds, are to be left uninsulated and exposed for examination during
the test.
B.
Pressure test gauges shall be calibrated at 90 day intervals or following damage to the
gauge (i.e., dropping, over-pressurizing, etc.) The calibration shall be made using a dead
weight tester. Gauge shall be tagged with the date last calibrated. The date of gauge
calibration shall be recorded by the Contractor. In the event that a pressure gauge is
found during calibration to be reading higher than the actual pressure, all tests made with
that gauge since the last time it was calibrated shall be considered nonconforming and
will require retesting if it cannot be determined that the test pressure utilized was
sufficiently high to conform to the required minimum pressure.
C.
Pressure gauges shall have minimum gradations of 1.0 psi.
TEST RECORDS
The Contractor shall prepare and submit to HGST test reports for all piping systems requiring
tests. The test reports shall contain, as a minimum, the following data:
•
•
•
•
•
•
•
•
•
•
•
3.10
Job title and Contract Number
Date of test
Identification of piping systems
Type of test, i.e. Hydrostatic, Pneumatic
Pressure applied, material temperature, and length of time at Test pressure
Test results
Test by
Signature of Contractor Test Supervisor
Comments, if any
Gauge identification and calibration due date
Signature or stamp of HGST's Representative
CLEANING OF INSTALLED PIPING
Contractor shall provide for cleaning and sanitization new piping, equipment, valves and fittings
following their installation. Existing equipment shall also be cleaned and sanitized as indicated in
the contract.
Cleaning and sanitization of new piping or entire DI systems shall meet the following
requirements:
New sections of piping less than 50 feet: PVC and piping of other materials shall
be flushed with plant DI water for at least 24 hours at normal flow rates. PVDF
piping up to 100 feet in length shall be flushed for at least 8 hours. Flush water
shall enter at the point of connection of the supply line and exit at the point of
connection on the return line. Vendor shall provide all materials necessary to
complete flushing.
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Division 15 Mechanical
New sections of piping greater than 50 feet or new systems: PVC and piping of
other materials and all attached equipment shall be sanitized with a seven (7)
percent solution of hydrogen peroxide. Peroxide solution shall be recirculated
for a minimum of 4 hours through the entire system. PVDF piping and systems
over 100 feet in length require sanitization as well. System shall be rinsed with
plant DI water for a minimum of 4 hours for PVDF and 12 hours for PVC and
other materials. Vendor shall provide tanks, chemicals, pumps and all other
necessary materials to complete sanitization.
Repairs: Repairs to piping shall be flushed as follows:
Minimum tool downtime allowed: For repairs which would impact tool(s)
downtime, new piping shall be flushed at full flow for a minimum of 30 minutes
for PVDF and one hour for PVC and other materials. Flushing shall exit the
piping at a point nearest the connection to the return line or through the tool if no
such connection exists. Vendor shall provide all materials necessary for flushing.
Tool downtime allowed: For repairs which allow the tool(s) to be down, flushing shall
occur for 8 hours for PVDF and 24 hours for PVC and other materials. Flushing shall
exit the piping at a point nearest the connection to the return line or through the tool if no
such connection exists. Vendor shall provide all materials necessary for flushing.
3.11
SYSTEM COMPONENT ACCEPTANCE TEST
After completion of the Hydrostatic and Pneumatic tests, and cleaning of the piping system.
Where specific DI water purity is guaranteed by the vendor through installation of DI water
production or purification equipment, vendor shall test the product (DI water) of such equipment
through analytical testing following completion of hydrostatic and pressure testing and cleaning
or sanitization of the DI Water System. Analytical testing shall be provided by the vendor using
an HGST approved testing laboratory. Should anal
ytical testing indicate that the system or
equipment provided by the vendor does not meet the guaranteed DI water quality, additional
testing, cleaning and flushing shall be at no additional cost to HGST.
END OF SECTION
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