ML20044D458
| ML20044D458 | |
| Person / Time | |
|---|---|
| Site: | 05200004 |
| Issue date: | 11/25/1992 |
| From: | GENERAL ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20044D433 | List: |
| References | |
| 25A5266, NUDOCS 9305190166 | |
| Download: ML20044D458 (44) | |
Text
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i' RAT - COMPONENTI E ED 456S9 IMPLANTI PER UENERGIA E L'INDUSTRIA S p.A.
Page ]/ 44 DMSIONE CIEt i
S B_W_R GDCS SOUlB VALVE EQUIPMENT REQUIREMENT SPECIFICATION (25A5266'GE) 4
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?D$U#l$OCK05200004 166 930514 A
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Revised per E.R.M.
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g77 A dated 9SEP'92 ggg 0
25NOV'92,
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REY.
DATA EMISSIONE VERIFICA APPROVAZIONE D R1AI Y~ nan OKlDf"*hR4R=y RRR
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B TABLE OF CONTENTS Page 1.
SCOPE 4
2.
APPLICABLE DOCUMENTS, CODES, AND STANDARDS 5
i 2.1 General Electric Documents 5
2.1.1 Supporting Documents 5
2.1.2 Supplemental Documents 5
l 2.2 Codes and Standards 5
I 2.2.1 American National Standards Institute (ANSI) 6 2.2.2 Institute of Electrical and Electronic Engineers 6
(IEEE) 2.2.3 American Society Of Mechanical Engineers (ASME) 6 2.2.4 Federal Standards 7
l 2.2.5 Military Standards 7
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3.
REQUIREMENTS 7
3.1 General 7
3.1.1 Definitions 7
3.1.2 Conflicts B
3.2 Design' B
3.2.1 Valve Classification B
3.2.2 Valve Type Description 9
'3.2.3 Flow Coefficient 9
I 3.2.4 Leak Tightness 9
3.2.5 Valve Opening Response Time 9
3.2.6 Valve Reliability and Open/ Closed Position 10 3.2.7 Design P,ressure and Temperature 10 i
3.2.8 Service Levels 11 3.2.9 Operational Conditions 11 3.2.10 Mechanical Design 12 3.2.11 Electrical Design 15 3.2.12 Maintainability 16 3.2.13 Thermal Effects 16 3.3 Testing 17 3.3.1 Hydrostatic Tests 17 3.3.2 Flow Tests 18 3.3.3 Startup and In-service Testing 18 3.4 Life 18 3.5 Environmental Conditions 19 19 i
3.5.1 Temperature 3.5.2 Relative Humidity 19 3.5.3 Pressure 19 3.5.4 Radiation 19 i
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i TABLE OF CONTENTS (Continued)
Page 3.5.5 LOCA 19 3.5.6 Seismic / Dynamic Environment 21 3
21 3.6 Pipe End Load Conditions 21 l
3.7 Nameplates 22 3.8 Nitrogen Quality 3.9 Insulation 22 3.10 Cleaning, Marking and Preparation for Shipment 22 3.10.1 Cleaning 22 23 3.10.2 Capping 23 3.10.3 Packaging 3.10.4 Lubricants 23 3.11 Documentation Requirements 23 3.11.1 Drawings 23-3.11.2 Design Freeze List 24 3.12 Instruction Manual 24 24 3.13 Design Report 3.14 Tests, Test Reports and Test Logs 25 4.
QUALITY ASSURANCE REQUIREMENTS 25
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4.1 General 25 4.2 Responsibility 26 4.3 Quality Assurance Binders 26 4.4 Nonconforming Parts / Components or Engineering Changes 26 4.5 Identification and Traceability of Parts 27 j
l Appendix 10 Seismic / Dynamic Environments for Design and 28 Qualification Purposes I
Appendix 20 Design Rdport 37 Appendix 30 Production Tests 39 l
40 Appendix 40 Engineering Development Tests Appendix 50 Valve Certification Data Sheet Requirements 41 l
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1.
SCOPE 1.1 Scope This specification defines the minimum requirements for the design, development, manufacture and testing of a squib-actuated valve for use in the Gravity Driven Cooling System (GDCS) branch secondary lines and equalizer lines of a nuclear boiling water reactor plant.
1.2 This specification requires that the work performed by the Seller, L
including his suppliers, shall be in compliance with the requirements i
specified herein and in the purchase order. The work shall include all aspects relative to design, development, analysis, procedures used, l
inspections, testing, reports and other documentation needed to demonstrate, to the Buyer's satisfaction, that the services or equipment furnished comply with~the requirements of this specification and purchase order. The Seller shall accept full responsibility for his work, the work of his suppliers, and for compliance with the requirements of this
- specification.
Review or approval of drawings, procedures or specifications by the Buyer does not constitute acceptance of any design, materials or subassemblies which will not fulfill the requirements established by the purchase order. Buyer's review and approval action (s) shall in no way affect, limit or relieve the Seller of the responsibility for compliance to the requirements of this specification and the purchase i
order.
l 1.3 This specification requires that the Seller agrees to provide the l
Buyer with all technical data needed and pertinent to support and maintain the design, verification and qualification of the squib actuated valve design.
t 1.4 Verification of compliance to performance requirements will be based upon test results obtained from testing to Buyer approved test plan or procedure that is in compliance with this specification. The Buyer i
reserves the right to verify compliance of any of the requirements j
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l specified herein and on the purchase order for any work effort required, or valve or component ordered.
F 2.
APPLICABLE DOCUMENTS, CODES, AND STANDARDS
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i 2.1 General Electric Documents. The following documents form a part of this specification.
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2.1.1 Supporting Documents a.
Materials and Process Requirements 23A4428 for BWR Pumps and Valves F
b.
GDCS Design Specification SBW5240SNPXN001000 i
c.
GDCS Piping and Interface Diagram SBW5240DNJX0001001 d.
GDCS Process Flow Diagram SBWE240DNIXN003001 SWB5240DNIXN003002 2.1.2 Supplemental Documents a.
Low Alloy Steel Bolting B50YP270 b.
Standard for the Preparation of Design Reports NEDO-21448 for Nuclear Components (Oct. 1976), hereafter called "NEDO Standard".
2.2 Codes and Standards. The following Codes and Standards form a part of this specification (latest issue unless otherwise specified) to the extent applicable.
Edition of the Code issued after the request for quote date may only be used with the approval of the Buyer.
Code Case interpretations shall not be applied without prior approval of the Buyer.
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B 2.2.1 American National Standards Institute (ANSI)
N45.2 - Quality Assurance Program Requirements for Nuclear Power i
a.
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l Plants.
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b.
B16.5 - Pipe Flanges and Flange Fittings l
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c.
B16.34 - Valves - Flanged, Threaded and Welding End l
2.2.2 Institute of Electrical and Electronic Engineers (IEEE) i a.
323.
Standard for Qualifying Class IE Equipment for Nuclear Power i
Generating Stations (1983).
b.
344.
Recommended Practice for Seismic Qualification of Class IE Equipment for Nuclear Power Generating Stations (1987).
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2.2.3 American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code 1989 Edition, no Addenda i
a.
Section II, Materials I
b.
Section III, Subsection NCA - General Requirements Subsection NB - Class 1 Components Appendices t
c.
Section V, Nondestructive Examination
~4 d.
Section IX, Welding and Brazing Qualifications 1
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Section XI, Rules for Inservice Inspection
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B 2.2.4 Federal Standards j
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Federal Standard no. FED-STD-H28, Screw Thread Standard for Federal l
Services H-28.
l b.
Code of Federal Regulations 10CFR50.49 t
c.
Code of Federal Regulations 10CFR21 2.2.5 Military Standards l
a.
Quality Program Requirements MIL-O-9858A i
b.
Inspection Requirements MIL-I-4520BA c.
Calibration System Requirements MIL-STD-45662 i
3.
REQUIREME!CS 3.1 General 3.1.1 Definitions 3.1.1.1 Buyer. General Electric Nuclear Energy.
i 3.1.1.2 SquOb Actuated valve. A valve which shall open upon an external applied signal and remain in its full open position without any external power source in order to admit coolant into the reactor pressure vessel in the event of a Loss of Coolant Accident (LOCA).
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3.1.1.3 Component. A component is defined as any part or item which is listed, either individually or as a subassembly, on a parts list or design freeze list, or both.
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3.1.1.4 Design Freeze List.
A Design Freeze list is defined as a formalized list which identifies the applicable revision of Seller's and Sub-Seller's drawings, part numbers, procedures and other applicable j
documentation for the valve components, and defines and controls the design and manufacture of the squib valve.
l 3.1.1.5 Valve Inlet.
The low pressure side of the squib valve. The low pressure side of squib valve is subject to a maximum driving head of approximately 44 feet of water at 135
- F.
3.1.1.6 Valve Outlet. The high pressure side of the squib valve. The valve outlet is subject to reactor pressure vessel (RPV) pressure plus f
pierometric head.
3.1.2 Conflicts.
In case of a noted conflict between this specification and other applicable specifications or documents listed, the Seller shall notify the Buyer in writing of the specific areas in conflict and propose a recommendation to correct the noted conflict. Documented conflict (s) shall be resolved by the Buyer and the resolution (s) transmitted to the Seller in writing for application.
3.2 Design 3.2.1 valve Classification 3.2.1.1 Buyer's Internal Classification:
Safety Related Class 1:
Seismic Category 1.
3.2.1.2 ASME Code Section III:
Class 1 valve, Service Levels A through D 3.2.1.3 IEEE Standard 323-1983: Class lE
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3.2.2 Valve Type Description.
Horizontally-mounted, straight through, a
j long duration submersible, squib-actuated, non-reclosing valve with a 1
l metal diaphragm seal and flanged ends.
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e 3.2.3 Flow Coefficient i
i, 3.2.3.1 The flow coefficient C. shall be greater than or equal to 876 f
gpm/ psi.
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3.2.3.2 The valve flow coefficient shall be based on water at 135*F.
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Valve flow coefficient shall be determined based on flow measurements corrected using acceptable engineering equations.
3.2.3.3 Capacity certification shall be done as listed in Appendix 40.
F 3.2.4 Leak Tightness a
3.2.4.1 The valve design shall be such that no leakage across the 1
diaphragm shall be possible throughout the life of the valve.
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3.2.5 Valve Opening Response Time l
t 3.2.5.1 The valve opening time to full open from the time the squib is l
fired shall be less than or equal to 0.5 seconds.
l 3.2.5.2 The valve opening response time shall be determined from the receipt of an actuation signal at the electrical connector on the valve.
a 3.2.5.3 The squib shall be capable of opening against a static back pressure up to and including 205 psig while the pressure at the valve l
inlet is 19 psig at the time of initiation.
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3.2.6 Valve Reliability and Open/ Closed Positions 3.2.6.1 The valve normal position is " closed" (de-energized). The valve shall remain in the closed position until receipt of an electrical signal. The " fail to open" failure rate (not opening on signal) shall be i
no more than 3.0 x 10~" failures per valve per demand at 50 percent confidence level. This requirement shall be met if 70 valves or 70 l
initiator-booster assemblies are tested with no failures.
f The valve shall not inadvertently open by self-ignition of the initiator-booster (fail-open failure). The failure rate for this is 6.25 x 10-*
(Update Later) events per valve year. The seller may use actual tests or data from previous tests and past histories to j
demonstrate compliance. Adequate margin shall be provided in the design of the valve to assure compliance (specifically thermal margin between operating temperature and a self-ignition point shall be as large as I
possible).
3.2.6.2 Once open, the valve shall remain fully open, without the need
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t of externally applied power, under reverse flow process coolant inlet velocities up to 3 ft/see and forward flow process coolant inlet
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velocities up to.826 f t'/sec.
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3.2.6.3 The seismic and dynamic loading conditions specified shall not cause the valve to-change state. When opened, the valve shall remain f
open, or when closed, the valve shall remain closed, and when commanded
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to open, the valve shall open.
P 3.2.6.4 Unless commanded to open, the valve shall rema'n closed for all valve outlet pressures up to and including 1471 psig.
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3.2.7 Design Pressure and Temperature 3.2.7.1 The valve design:
Pressure 1226 psig
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Temperature 571*F 3.2.7.3 The valve lowest expected service temperature is 40*F.
l 3.2.8 Service Levels The following stated service levels applies to the i
valve outlet as well as the valve inlet.
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i Service Level A O psig at 70*F to 1261 psig at 575=F Service Level B up to 1386 psig at 586*F Service Level C up to 1471 psig at 595*F j
Service Level D Less severe than Service Level C 3.2.9 Operational Conditions. The squib valve must be capable of withstanding.the following conditions throughout its service life and l
i still perform its intended function at the conclusion of its service life:
3.2.9.1 Fluid Media:
a.
Demineralized Water b.
Oxygen content:
$ 8 ppm c.
Fluorides / Chlorides:
1 100 ppb i
d.
Particulates:
Relatively free from particulates 3.2.9.2 Thermal and Pressure Transients. The valve with a service life of 60 years shall be capable of performing its intended function after being subjected to the following process coolant transient conditions:
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3.2.9.3 Normal Transients:
O psig at 70*F to 1261 psig at 575'T and back to O psig.... 360 cycles l
The heat-up or cooldown rate will not exceed 100*F/hr.
3.2.9.4 Emergency Transients:
3.2.9.4.1 ATWS: One cycle from 1050 psig at 552*F to 1471 psig at 595'F and return to 1235 psig. This cycle will last 110 seconds.
Seven cycles from 1195 psig at 568"F to 1285 psig at 577*F and return to 1195 psig.
Each cycle to last between 10 and 20 seconds.
3.2.9.4.2 LOCA: Two cycles, from 1050 psig at 565*F to zero psid across the squib valve in 12.5 minutes.
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3.2.10 Mechanical Design
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3.2.10.1 Materials I
i 3.2.10.1.1 Valve Body. The valve body, flanges and internal mechanism shall be made from either 304L or 316L stainless steel.
If no welding is to be done on primary pressure boundary, the material may be 304, or 316 I
stainless steel. The materials and processes shall conform to Paragraph i
2.1.1 - Materials and Process Requirements, j
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3.2.10.1.2 Corrosion Allowance. The following is a 60 year corrosien i
allowance.
a.
Stainless stee.1 0.008 inch fluid side v
0.002 inch external side 1
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3.2.10.1.3 Seals and Gaskets. Gaskets shall be totally enclosed spiral wound, Inconel/ expanded graphite with baching ring.
Expanded graphite shall be low halogen, low sulphur, " Nuclear Grade".
The gasket backing i
ring shall fit snugly or have stud spacer cut outs to aid in proper l
i gasket installation during valve installation.
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3.2.10.1.4 Stud Holes.
Stud holes shall include a set of spacers, of i
proper dimensions, manufactured with a tolerance of + 0.001 inches to t
provide a means to positively prevent unevenly torquing the valve gasket or seal.
a 3.2.10.2 Size / Weight / Center-of-Gravity.
The size and weight of the valve shall be minimum consistent with compliance to the specified requirements. Dimensions, weight and center-of gravity shall be specified on the outline drawings.
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3.2.10.3 Lifting Device. The valve assembly shall have lifting lugs attached such that it can be picked up at a single lifting point.
l 3.2.10.4 Thresded and Bolted Closures / Fasteners 3.2.10.4.1 Pressure containing or retaining closures and fasteners shall j
meet the ASME Code requirements for the stated design conditions and are i
subject to Buyer approval. Closures shall be designed to provide access without cutting strength welds or permanently damaging components.
3.2.10.4.2 Inlet and outlet flange fasteners shall have sufficient male (stud) threads exposed above the nut for use with a stud tensioner. All others shall have minimum two full threads exposed.
J 3.2.10.4.3 The minimum and maximum torque values shall be calculated based on lubricated threads and nuts and shall be specified on the
25A52C6 13 B
outline drawing for all threaded fasteners greater than 1/4 inch nominal diameter.
3.2.10.4.4 A positive means shall be provided in the valve design to prevent unevenly torquing the gasket or seal (see requirement 3.2.10.1.4).
3.2.10.4.5 All fasteners for pressure containing or retaining closures (except inlet and outlet flanges) and those items which could loosen and become potential missiles due to vibration shall be provided with a means for positive locking, that is subject to Buyer approval.
3.2.10.5 valve Orientation. The valve shall be mounted on a horizontal demineralized water line sloped (1 to 3*) toward the valve inlet line for drainage (inlet lower than outlet).
3.2.10.6 Surface Finis'h and. Quality. All surfaces for "O" ring type 4
I seals (if used) shall not exceed RMS 63 finish. All flange surfaces for spiral wound metal gaskets shall have a finish between 125 and 250 RMS, with no radial scratch marks.
3.2.10.7 Missile / Projectile Potential. The design of all the features on the valve shall be such as to preclude components or parts of the valve body from becoming missiles or projectiles under operating conditions or failure modes. The design shall also incorporate, where necessary, protective covers or caps, to minimize the potential of external missiles or projectiles affecting operability of the valva or other valves in the vicinity.
3.2.10.8 Flanges.
i 3.2.10.8.1 The valve shall be designed and manufactured with end flange configuration that would meet with the following:
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Inlet Piping 1500 lb - ANSI B16.5 Schedule 80 Outlet Piping 1500 lb - ANSI B16.5 Schedule 80 3.2.10.8.2 The flange sealing surface shall be raised c' cular rings to present the gasket with a labyrinth sealing surface to prevent valve leakage.
l 3.2.11 Electrical Design 1
I 3.2.11.1 The valve shall be designed so it opens upon receipt of a signal from any of three separate electrical Class 1E, 125 Vdc power l
supplies, or any combination of all three sources as defined below.
3.2.11.2 Three separate, individually isolated firing circuits comprising bridgewires incorperated within the initiators each capable of firing the primary gas propellant compound (squib) shall be provided for
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the same squib such that any one or combination of all three shall open l
the valve.
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3.2.11.3 Voltage provided to operate the valve may be any value between l
i 105 Vdc and 135 Vdc with an extreme of 140 Vdc (maximum) during battery charging.
i 3.2.11.4 The design shall include margin such that valve functionality is assured with any applied voltage from 90 Vdc to 155 Vdc.
3.2.11.5 The operator circuitrv is normally in the de-energized state, however the electrical devices and circuitries shall be designed and I
manufactured as Class lE ecoipment based upon the assumption that it will be used in a continuously " energized" state.
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3.2.11.6 Remote Indicators. The design shall incorporate a device (s) l which will indicate to the plant control room if the valve is in the i
closed position, or if it is in the full open position.
l 3.2.11.7 Continuity Test.
The continuity of the bridge wire shall be monitored by a continuous very low amperage current that shall never exceed 50 % of the current necessary to fire the squib.
3.2.12 Maintainability 3.2.12.1 The design of the valve assembly, including any water tight i
enclosure (if required) surrounding the activating components of the i
i valve, shall be such that it can be properly inspected while installed.
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Once opened (fired), the complete valve must be able to be removed from the drywell and replaced with another valve by a two man crew working in anti contamination suits and gloves within.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, Once removed from i
the drywell, the opened valve shall be capable of being disassembled, refurbished, re-assembled and tested for maintenance purposes within 72 l
t hours.
3.2.12.2 The valve initiator assembly, together with any water tight enclosure, shall be capable of being changed out and the squib valve l
restored to operation within two hours by a two man crew wearing l
l anti-contamination suits and gloves.
i 3.2.13 Thermal Effects I
i 3.2.13.1 The squib valve shall be designed for the thermal effects l
produced both by the surrounding environment as well as heat conduction i
from hot process (outlet side) coolant. Specifically, thermal effects on i
the initiator-booster assemblies and the organic seals (if any) shall be mitigated in the design of the squib valve. For the purposes of the design it can be assumed that the valve outlet demineralized water is at 1
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r 550*F, the valve inlet demineralized water is at 135'F, the valve body is not insulated and the normal ambient temperature in the valve body vicinity is 135'F.
The design evaluation shall account for any local water tight enclosure necessary to provide submersion protection for the squib, initiators and connecting leads. The LOCA ambient conditions ar e as specifies in section 3.5.5.1.
NOTE: Please advise the buyer if requirement 3.2.14.1 eliminates valve designs that potentially would meet all other requirements. This requirement alone should not prevent the seller from bidding on this purchase specification.
3.2.13.2 The valve design and the initiator-booster assembly location shall be chosen such that the temperature at the mounting point of the
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initiator-booster during normal service conditions is not more than 280*F.
External forced cooling shall not be considered.
3.3 Testing l
3.3.1 Hydrostatic Tests 3.3.1.1 The valve inlet and outlet areas shall be subjected to hydrostatic tests as required by the ASME Code,Section III and ANSI B16.34, for the respective rated design pressure and temperature conditions. The valve shall be in the assembled configuration when tested.
The rupture diaphragm shall be exempted from the hydrostatic test, but shall be leak tested at 1662 psig at ambient temperature.
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3.3.1.2 The squib valve shall be designed to withstand the following 1
system hydrostatic tests:
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j Initial Maintenance RPV Hydro 10 yr Hydro Hydro Cycles 10 6
90 j
Pressure 1586 1155 1052 I
(psig) water Temp 130 137 126
(*F) 3.3.2 Flow Tests 3.3.2.1 See Appendix 40 3.3.3 Startup and In-Service Testing 3.3.3.1 During every outage all of the initiator-boosters may be replaced. The removed cartridges will be fired to ascertain that the exposure to heat and radiation did not degrade performance of the initiator-boosters.
i 3.4 Life 3.4.1 The valve shall b,e designed and manufactured for a 60-year service life excluding normally replaceable items such as seals, gaskets, initiator-boosters, connectors and other electrical devices and or components which are irrepairably altered as a consequence of a firing of a valve.
3.4.2 Electrical devices shall have a minimum 10-year-in-service qualified life unless otherwise specifically identified by the Seller and j
approved by the Buyer.
t 3.4.3 Initiator-boosters shall have a minimum 10 year shelf life, and minimum 4-year installed service life thereafter.
25A5266 18 B
3.4.4 other normally replaceable non-metallic items (gaskets, packings, etc.) shall have a 5-year in-service qualified life. The manufacture date, maximum shelf life plus service life shall be identified on the package without opening the package. The 5-year in-service life applies f
after shelf life.
3.4.5 The squib valve shall be designed to withstand a minimum of two initiator booster firings, undergo valve reconditioning, be reinstalled in the system and still perform its operational function.
i 3.5 Environmental Conditions
3.5.1 Temperature
i a.
Nermal Ambient Temperature Range:
70*F to 135*F r
b.
Ambient Temperature Transient:
70* to 185*F at 40*F/ min, with 185'F maintained for 5 f
hours 1
3.5.2 Relative Humidity:
10% to 90%
3.5.3 Pressure
Normal 2 to 5 psig (N )
2
+
12 times in 60 years 41 psig for 3 days 3.5.4 Radiation. Normal radiation total integrated dose for which the
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valve shall be designed is 3.5 x 10' Rads / year (TBD).
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3.5.5 LOCA 3.5.5.1 Temperature and Pressure Envelope. The Loss of Coolant Accident (LOCA) conditions for which the valve shall be designed to are as t
follows:
Temperature Pressure Relative l
Duration
'F (psiQ Humidity (RH) to 0.5 sec 70 to 340 0 to 55 All Steam 0.5 see to 6 hrs 340 55 All Steam 6 hrs to 3 days 340 to 300 55 All Steam 3 days to 100 days 300 55 All Steam l
3.5.5.2 From the time of initiation of LOCA, until 100 days, the valve must remain fully functional (open on signal and stay open).
After the 100 days the valve need not remain functional, but must stay open, if opened. Closed valves may open without an initiation signal after 100 days.
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b 3.5.5.3 LOCA Radiation (Gamma Rads-Carbon). The total integrated accident radiation dosage for which the valve shall be designed is 1 x 10" Rads (TBD).
l 3.5.5.4 Total Radiation. The total integrated dose for normal and LOCA radiation shall be as follows:
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Yearly normal radiation (3.5 x 10') x number of years for qualification plus LOCA radiation (1 x lo") plus a 10 percent margin.
3.5.5.5 Containment Spray. Not applicable.
3.5.5.6 Submergence. The capability to fire the squib valve shall not be impaired even if the valve becomes submerged with a 40 foot head of standing water at 300 *F for 100 days following a LOCA (indicator lamps excepted).
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B 3.5.5.7 Chemical Spray.
Not applicable.
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l 3.5.5.8 Electromagnetic Interference. Not applicable.
1 3.5.6 Seismic /Dvnamic Environments 3.5.6.1 The valve and its normally attached components shall have no natural resonance frequency at or below 60 hertz. The valve assembly shall be designed to withstand the following accelerations in addition to the dynamic loads specified in Appendix 10:
Horizontal Acceleration 8g vertical Acceleration 8g i
i 3.5.6.2 The valve and its normally attached components shall be designed and manufactured to successfully withstand A seismic qualification test in accordance'with reference Paragraph 2.2.2.b.
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l 3.6 Pipe End Load Conditions. The valve shall be designed and
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manufactured to withstand, without loss of operating function, statically l i induced pipe loads on the inlet and outlet flanges in each of the three principal axes equal to st least 1.0 S. (100*F) of the attached piping.
l Piping to be Schedule 80 and material to be nuclear grade SS.
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l 3.7 Nameplates l
l 3.7.1 Nameplates with the following legible information shall be permanently fastened to each valve assembly:
a.
Manufacturer's name l j b.
Valve size l
c.
Valve model and serial number i
d.
? low Coefficient C.(gpm/ psi)
Code section and class e.
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Nuclear code symbol (Not required for prototype) i f
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3.7.1 (Continued) l g.
Design pressure h.
Design temperature l
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Hydrostatic pressure (inlet / outlet) j.
Body material k.
Valve weight 1.
Month and year of manufacture GE purchase order number m.
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GE specification number n.
o.
GE MPL number 3.7.2 The following information shall be provided for the initiator-boosters.
Since the initiator-boosters are small, the nameplate can be attached on the booster assembly:
i a.
Manufacturer's name b.
Type and model number c.
Date of manufacture
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d.
Minimum operational current e.
Maximum test current & maximum continuity current-l f.
Maximum sustained operational temperature g.
Bridge wire res.istance h.
Fuse requirement 3.8 Nitrogen Quality. Nitrogen supply in the plant has the following quality:
l a.
Oil free
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b.
50 micron filtered j
c.
Dew point of -24*F at 0 psig 1
3.9 Insulation. The Seller shall identify areas on the valve assembly l
which shall not be insulated in order to minimize heat transfer to the initiator-booster assembly.
3.10 Cleaning, Marking and Preparation For Shipment 3.10.1 Cleaning. All interior and exterior valve surf aces shall be clean, free of oil, foreign material and any residue. Chloride and i
fluoride bearing solvents shall not be used.
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25A5266 22 4
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A 3.10.1.1 After cleaning, all surfaces shall be thoroughly dried by warm air.
Y 3.10.1.2 Exterior non-functional carbon surfaces shall be cleaned from oil, grease, rust, scale and any other foreign material and shall be coated with an approved epoxy primer. Exterior functional surfaces shall i
be coated with an approved corrosion inhibiting coating.
3.10.2 Capping.
All valve openings shall be capped, after drying, with polyethylene, stainless steel or plywooi caps. Non-fire retardant, plain, generic polyethylene, 0.004 inches or thicker, shall be used between the plywood and the valve.
Caps shall not be welded to the valve.
3.10.3 Packaging.
Af ter drying, bags of approved desiccants shall be placed inside the valve and the shipping container. Desiccants shall meet MIL-D-3464 Type II, and shall be non-dusting, silica gel type.
3.10.4 Lubricants. Any lubricants used must be qualified for a high temperature service (> 550*F), and greater than 3x10" rads (TBD).
4 3
.1 Documentation Requirements. The Seller shall submit the following documents for review and approval.
3.11.1 Drawings. The Seller shall prepare all necessary drawings for l
l the manufacture and procurement of the valve assembly. This shall l
include the following:
i a.
Detail manufacturing drawings.
b.
Detail purchase part drawings of items purchased commercially or manufactured specifically for this project, showing not only 1
sub-vendor's part number, but also dimensions and material requirements.
c.
Subassembly drawings.
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'5A5266 23 B
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3.11.1 (Continued) d.
Assembly drawing with bill of material, and any assembly dimensions t
i and tolerances and torques required.
I Outline drawing showing the valve outline with dimensions in inches i
e.
and millimeters, including the location of C.G.
Location and size of interfaces (flanges, electrical connectors) and maximum pull i
I space, minimum space required te install and remove the valve or any sub-assembly. Weight and lift points.
3.11.2 Design Freeze List 3.11.2.1 A design freeze list (s) shall be prepared and maintained j
throughout the order. The Design Freeze List shall be prepared by the seller and submitted to the Buyer for approval. The Design Freeze List is a summary of all the applicable drawings and part numbers, quality assurance inspection requirements, procedures and quantities of parts per valve. The design freeze list shall identify the revision level of all
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the' documents.
3.12 Instruction Manual i
3.12.1 The Seller shall prepare an Instruction Manual and submit it to the Buyer for approval.,
3.12.2 The Instruction Manual shall include the following:
a.
Description of the valve and its operation. Valve model, design pressure, temperature, flow coefficient C.,
response time, electrical requirements, weight and any other pertinent information, including precautions.
b.
Valve assembly drawing and parts lists.
c.
Installation instruction, including preoperational checks.
d.
Replacement of parts procedure including maintenance intervals and disassembly and re-assembly procedures, and list of tools or special
)
I fixtures required.
e.
Spare parts list including recommended quantities.
j 3.13 Design Report i
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25A5266 24 B
3.13.1 The Seller shall prepare a Design Report as per requirements listed in Appendix 20.
3.13.2 Stress analysis shall be performed per ASME Code requirements for Section III, Class 1 valve, Service Levels A through D.
3.14 Tests, Test Reports and Test Locs 3.14.1 Engineering and qualification test reports shall be prepared by the Seller and approved by the Buyer. Test logs shall be maintained, which include all the data and information regarding times, temperatures, pressures, flows and events pertinent to the tests.
3.14.2 The following tests shall be performed:
a.
Engineering Development Tests (See Appendix 40).
These will include sizing of the valve actuating mechanism and the location and number of the initiator-boosters for proper operation of the valve under operatior.al conditions.
Tests done on the initiator-booster to determine proper mixture and particle size of the primer and/or the load.
b.
Flow Capacity Test. A full size model shall be used for the flow coefficient tests., Tests shall be conducted with fresh water having characteristics as specified in Paragraph 3.2.9.1.
4.
QUALITY ASSURANCE REQUIREMENTS 4.1 General. The Seller shall maintain a quality assurance program that, as a minimum, complies with the requirements specified in one or all of the following paragraphs:
a.
2.2.1.a N45.2 Quality Assurance Program Requirements for Nuclear Power Plants b.
2.2.3 ASME Code,Section III c.
2.2.5.a,b and c Military Standards
a.,
a 25A5266 25 B
l 4.2 Responsibility. The Seller is responsible for ensuring that:
a.
Services and valves provided comply with all specification requirements.
b.
Unless otherwise specified in the purchase order, the Seller is I
responsible for performance of all inspection and test requirements established for each prototype or production unit, as specified in Appendices 20, 30,and 40.
The Seller may use his own or other facilities which are suitable
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c.
for the performance of inspections or tests. The Seller shall identify to the Buyer those activities which may be performed by the Seller's subcontractor. A five day advanced notification shall be made to the Buyer prior to performance of such tests or inspections.
4.2.1 The Buyer reserves the right to witness and/or perform any of the inspections and tests deemed necessary to assure that parts, components, equipment and services provided conform to requirements specified herein and on the purchase order.
4.3 Quality Assurance Binders. Quality assurance binders shall be provided for each valve furnished to this specification. The quality l
assurance binders shall contain the following information, as a minimum:
l l
a.
ASME Form NPV-1.
2 b.
Material Certifications for ASME Code parts and those others established between Seller and Buyer.
c.
Valve and major subassembly production test results.
d.
A valve certification data sheet in compliance with Appendix 50.
4.4 Nonconforming' Parts / Components or Engineering Changes i
4.4.1 The Seller shall provide the Buyer with documented information for nonconforming parts and components and engineering changes, as applicable Nonconforming parts and engineering changes shall have i
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Buyer's approval, prior to incorporation. (This does not apply to 1
components for which detailed drawings are not provided).
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25A5266
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e 4.4.2 The Seller shall submit the information required as specified in i
Paragraph 4.4.1 within 10 calendar days after the nonconforming condition has been discovered.
The Seller shall allow 15 calendar days for the Buyer's response.
4.5 Identification and Traceability of Parts.
Docsmented identification of all parts and subassemblies installed into the furnished valve shall be made to a Seller submitted procedure which has been approved by the.
Buyer.
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25A5266 36 B
l APPENDIX 20: DESIGN REPORT 20.1 Design Peport shall provide all the analyses required to demonstrate that the pressure boundary, the structural design, performance and operational requirements of the valve specification are satisfactorily met, including design for seismic loads.
20.2 Design Report shall be in compliance with the requirements of the ASME Code and shall conform to the requirements of NEDO Standard Feferenced in Paragraph 2.1.2.b. with the following additions.
20.2.1 Reference shall be provided to the source of each formula used in calculation or analysis.
20.2.2 Sketches, drawings and feee-body diagrams shall be included where necessary for clarification. The Buyer has the right to identify areas of the report where.such necessitp exists as a part of his review of the report.
20.2.3 All assumptions shall be explained and justified.
20.2.4 In addition to the requirements of the NEDO document identified in Paragraph 20.2 above, key features of the design shall be analyzed to determine normal operational and maximum allowable loadings. These loadings shall be included in the summary, required by Paragraph 3.3 of the NEDO standard.
20.2.5 In addition to the analyses required by the ASME Code, analyses for those features on and for the valve not specifically required by the Code shall include, as a minimum but not be limited to, the following:
1 20.2.5.1 Stem stress and column buckling considerations.
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25A5266 37 B
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20.2.5.2 Thread shear stresses.
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i 20.2.5.3 Linkage systems and efficiency thereof between valve and actuator, if applicable, including bearing adequacy. Assumed coefficient of friction shall be justified.
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F 20.2.5.4 Minimum natural frequency.
20.2.5.5 Opening times and speeds, as applicable to the design.
20.2.6 ASME Code calculations shall include consideration of forces and i
moments due to fluid flow.
20.2.7 For those valve flanges which are not reflected by suitable models in Appendix XI of the ASME Code,Section III, Division 1, the Seller shall justify and fully explain models used on the basis of superimposed similarity or conservatism.
20.2.8 The stress limits for pressure retaining and containing parts shall be in compliance with the ASME Code.
I 20.2.9 Shear Stress shall not exceed 0.6 S.
20.2.10 Stress limits for non-ASME parts shall not exceed 90 percent of yield strength.
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i 25A5266 38 6
B
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APPENDIX 30:
PRODUCTION TESTS 30.1 Depending on the valve design, the completed valve shall be I
subjected to tests to verif;* operability. The Seller shall define tests, i
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test plans and procedures and criteria for acceptance, and submit these r
I for Buyer's approval.
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25A5266 39
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B APPENDIX 40: ENGINEERING DEVELOPMENT TESTS 40.1 The Seller shall define tests to be conducted on subassemblies or components of the valve design, to assure proper operability, reliability and flow capability. The following tests shall be conducted as a minimum:
Punctional tests of the proposed valve design with a selected a.
initiator-booster compound to assure proper operability and to assure that the initiator-booster provides adequate output to operate the valve assembly.
b.
Heat transfer test on a final prototype configuration to determine the temperature at the initiator-booster with specified inlet temperature input and several ambient temperatures.
Reliability tests on a sufficient number of the final-c.
initiator-booster configuration to demonstrate reliability of the chemical to fire in such a manner as to properly actuate the valve and at the same time to avoid accidental, unwanted firing.
These L
tests will consist of irradiation, thermal aging and LOCA tests for the initiator-booster assemblies prior to firing. The number of assemblies will depend on the number of initiator-boosters used on the valve assembly.
d.
Flow capacity tests to be conducted as per Paragraph 3.14.2.b.
Any other tests deemed necessary by the manufacturer for the development i
of the valve configuration and operation. At least one functional test i
shall be done with a "down-loaded" booster to provide added assurance of i
l operability.
Percent of down-loading to be specified by the Seller and approved by the Buyer.
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25A5266 40 B
t i
APPENDIX SO: VALVE CERTIFICATION DATA SHEET REQUIREVINTS
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50.1 PURPOSE r
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l 50.1.1 The purpose of the valve certification data sheet is to provide:
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i Certification by Seller's management that the valve designed and a.
1 furnished conforms to the technical requirements of the purchase l
order.
i b.
A summarized delineation of information regarding rated performance characteristics, drawings, procedures and specifications to which i
l the valve was designed and manufactured.
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50.2 APPLICABILITY l
l 50.2.1 A completed copy of the Buyer approved valve certification data sheet shall be incorporated into the quality assurance binder.
50.3 RESPONSIBILITY 50.3.1 The Seller is responsible f or the correct inf ormation required on the valve certification data-sheet. The required information is listed on Exhibit A of this Appendix.
J l
50.4 INFORMATION REQUIRED 50.4.1 The information required is listed on Exhibit A of this Appendix.
1
i 2EA5266 41 B
EXHIBIT A VALVE CERTIFICATION DATA SHEET (1)
VCDS/ VALVE (2)
Identification Revision:
(3)
Dated:
t (4) Title - (The standard nomenclature / description of the valve)
(5) Company - (Seller's name and address)
(6) Buyer - (Buyer's name and address)
(7) Owner - (owner's name and addrens if other than Buyer)
(Name of plant / project)
(S) ~ Plant /Proj'ect (9) Buyer's Purchase Order No. -
(10) Seller's Order No. -
(11) Valve Assembly Drawing No. and Revision (Dwg. No.)
(Revision) 1 (12) Design Freeze List No. and Revision
]
(DFL No.)
(Revision)
- 13) Instruction Manual No. (Instruction Manual Identification No.)
(14) Service Application - (e.g. ECCS - water) 1
9 25A5266 42 B
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i (15) Applicable Design Specifications (a)
(GDCS Squib Valve Specification and Revision) r (b)
(Material Specification and Revision)
(16) ASME Boiler and Pressure vessel Code Applicability (a)
(Section and Class)
(b)
(Year and Addenda)
(c)
(Applicable Code Cases)
(17) Applicable Procedures List - (Identification No. and revision of the a
list which identifies all Seller procedures, Seller generated specifications for subtier parts / components / services, and subtier procedures applicable to pressure retaining components used on the valves furnished prior to shipment).
i (13) Rating or Rated Performance Characteristics. For example:
i (a) Valve Assembly Design Pressure:
Design Temperature:
Hydrostatic Pressure:
(b) Actuator Assembly Maximum Operating Temperature:
Design Temperature:
l 4
(c) Flow Ctefficient - (Fresh Water in accordance with nameplate specified pressure values)
(19) Applicable Valve Serial Numbers (S/N) and Additional Data (Additional data are defined as data not included in the applicable valve specifications, such as month and date manufactured, applicable Deviation Disposition Requests (DDRs), or design variations approved for and incorporated by the purchase order, but
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'25A5266 43 j
B 4
l not referenced on the drawing, e.g.,
a remote indicator or an
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alternate material.)
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i (20) Certification Statement 1
(Seller's Name) hereby certifies that the valve (s) noted above were designed, manufactured and qualified, and is/are furnished to the r
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drawings, specifications, ASME Boiler and Pressure Vessel Code, l
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procedures, and the additional data identified herein.
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