ML20070R269
| ML20070R269 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 01/18/1983 |
| From: | VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | |
| Shared Package | |
| ML20070R265 | List: |
| References | |
| PROC-830118, NUDOCS 8301270376 | |
| Download: ML20070R269 (76) | |
Text
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Relief Request Basis NUMBER: 3-10 COMPONENT: Main Steam Line circumferential weld joints A4 and D4 CATEGORY: 3-J CLASS: 1 TEST REQUIREMENT: Volumetric BASIS FOR RELIEF: Welds A4 and D4 ars pipe to valve welds which are inspectable from the pipe side only, as discussed in Re3taf Request Basis B-7. However, most of the weld crown and several inches of base metal on the pipe side are covered by a support ring (see attachment). These rigid supports cannot be removed because the only other restraints on each line are the penetration at one and, several spring hangers and a snubber along the run, and the vessel nozzle at the other end. Removal would introduce unnecessary stress into the piping and re-asining support components. Consequently, volumetric awa=4 nation of these welds is not practical. ALTERNATE TESTING: These welds will be visually exuined for leakage during the primary coolant system hydrostatic pressure test. In addition, they will be volur.etrically examined, to the extent practical, if the support components are removed for any reason. t l I-125
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i Relief Request Basis NUMBER: C-2 Component: Attachment welds for pipe covering protection saddles CATEGORY: C-E-1 TEST REQUIREMENT: Surface I l BASIS FOR RELIEF: Saddles are provided to prevent damage to piping caused by excessive lateral deflection. They mainly perform a positional rather than a load-bearing function. The saddles are designed to transmit those loads that do exist in a predominantly compressional mode. Therefore, the intermittent or continuous fillet welds (see attachment) used to join the saddles to the pipe serve to hold them in place but do not contribute significantly to their load-bearing capability. The saddle configuration is such that access to these velds is severely limited, and surface examination is, consequently, impractical or impossible. The "best effort" examinations which result require considerable work and provide negligible benefit in terms of improved plant safety, reliability and quality. ALTERNATE TESTING: Visual examination will be performed on all fillet-velded saddles. II-104 Rev.7
SUPPORT SADDLE CONFIGURATION [ l
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FILLET WELDS
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-FILLET WELD ALTERNATE DESIGN RELIEF REQUEST BASIS NUMBER , C-2 ATTACHMENT
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& Transfer Condensate Storage C191176 N/A 6-25* 500,000 gallon capacity Tank Included in system suction tests . Transfer Piping C191176 150 6-25* Included in system suction from CST tests , Service and G191160 N/A N/A See Relief Request H-6 Instrument Air l
Atmospheric C191176 100 44 See Relief Request H-2 l Control l Sampling System C191165 56 44 See Relief Request H-7 Include in CAD test f CAD System VY-E-75-002-2 ( Injection Piping 150 44 See Relief Request H-14 37* Sample Piping 56 44 See Relief Request H-14 Vent Piping 56 44 See Relief Request H-14 CRD Systejm Scram Discharge C191170 1250 1563 Volume & Headers l ~ Drive Water Piping C191170 1750 1018 See Relief Request H-18
& Hydraulic Control Units Standby Cas C191238 56 44 See Relief Request H-16 Treatment Class 3: a l
l Fuel Pool cooling P-3 150 165 and Cleanup g
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H-6 Rev.7
l l Table H-1 t Design Test ,- - System Drawina No. Press Press Remarks . (Psig) (psig) - l Reactor Cleanup Discharge Piping P-5 1900 2090 See Relief Request H-4 for 1300 1430 CUW-55 Suction Piping F-4 1250 1375 Portions of test boundary upstream of V12-18 are S.C.1.
, e-4 required oniv for test
, connection Service Water G191159 125 137.5 Supply subsystems only.
Sheets 1&2 350 385 See Relief Request H-9 for return subsystem. Diesel Air G191160 260 250 See Relief Request H-10 Start HPCI G191169 1250 1375 See Relief Request H-11 Diesel Fuel G191162 150 165 See Relief Request H-12 011 Advanced Off Gas VY-E-75-001 .120 -1 See Relief Request H-17 k . Reactor Building P-14.a - 14.d 150 165 Closed Cooling Water e H-7 Rev. 7
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RELIIT REQUEST BASIS Numbers: H-3 H-4 NUMBER: H-3 ,, SYSTEM: All uninsulated Safety Class 1, 2, and 3 Systems ,, REQUIREMENT: Hydrostatic test pressure and temperature shall b"e maintained for at least four hours prior to performance of examination for leakage. BASIS FOR RELIEF: Later editions of the ASME Boiler and Pressure Vessel Code permit " components wherein both the base metal and . the veld deposit are exposed for visual examination" to be subjected to a minimum test time of 10 minutes. ALTERNATIVE TESTING: The duration of hydrostatic test holding time prior to exandnation for all uninsulated Safety Class 1, 2, and 3 Systems shall be 10 minutes. NUMBER: H-4 SYSTDf: Reactor Cleanup Water LINE(S): Discharge (CUW-55) SAFETT CLASS: 2 FUNCTION: Return domineralized water to reactor coolant BASIS FOR RELIEF: Ihe portion of CUW-55 between V12-63 and V12-62 cannot be isolated from the Safety Class 3 line CUW-54. Extending the 1.25 times P test D un an ey nd M2-0 would ovenressurize CUW-54. lALTERNATETESTING: The portion of CUW-55 between V12-63 and V12-62 shall be included in the 1.1 times P test of 54. D H-16
- Rev. 7
_ . _ _ . - - - - _ = . _ . . _ . -- .-- - . RELIEF REQUEST BASIS Numbers: E-7
. E-6 NUMBER: E-7
- SYSTIM: Sampling LINE(S): Containment air **
FUNCTION: Sample primary containment air SATETY CLASS: 2&3 BASIS FOR RELIEF: System is, designed for M. All lines are less than 1" and have no access for a test connection. ALTERNATE TESTING: Containment isolation piping and valves are tested during the 44 psig Type A Test. Other portions are in a normally operating condition. Routine operator surveillance would detect evidence of leakage. (
- Relief Request Basis H-8 has been withdrawn.
H-18 Rev. 7 l l
RELIEF REQUEST RASIS Numbers: H-9 H-10 o NITrGER: H-9
- SYSTIM: Service Water LINE(S): Return Piping SAFETY CLASS: 3 FUNCTION: Piping provides transport of plant waste heat to ultinte heat sink.
BASIS FOR RELIEF: Fiping cannot be.hydrostatically tested because it is used to dissipate heat loads during all modes of operation. During power operation, service water is required to remove heat from main recirculation pumps. At shutdown, service water is used to remove heat from the reactor via shutdown cooling equipment. ALTERNATE TESTING: The visible portions of the service water return piping are observed during normel operation. The system runs approximately 100% of the time. Routine operator surveillance would detect evidence of leakage or degradation of support compoesnt capabilities. I NUMBER H-10 SYSTEM: Diesel Air Start LINE(S): Full System SAFETY CLASS: 3 FUNCTION: System provides high pressure air to diesel generators to assist
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crank rotation in diesel starting. RASIS FOR RELIEF: System is designed for air. The introduction of water ! may be detrimental to the diesels and system operation. ALTERNATE TESTINC: ,The air start systen is constantly under a normal " operating" pressure of 250 psi, which is checked on every operator working shifc. l l t H-19 Rev.7'
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. m Relief Request Basis NUMBER: Vla SYSTEM: Reactor Building Closed Cooling Water ~
VALVE: V70-113 CATEGORY: C CLASS: 2 FUNCTION: RBCCW to containment check valve TEST REQUIREMENT: CV BASIS FOR RELIEF: Valve is required to be open during power operation. Shutting the valve would stop cooling water flow to vital containment equipment. ALTERNATE TESTING: Valve will be verified shut during cold shutdowns and refueling outages. f e l f ( t r . V - 2Sa Rev. 7
Relief Request Basis NUMBER: Vib SYSTEM: Reactor Building Closed Cooling Water VALVE: V70-ll7 CATEGORY: B CLASS: 2 FUNCTION: RBCCW return isolation valve TEST REQUIREMENT: Q BASIS FOR RELIEF: Valve cannot be exercised during power operation since closing the valve would stop cooling water flow to vital containment equipment. , ALTERNATE TESTING: Valve will be full stroke exercised during cold shutdowns and refueling outages. t l l l l i V - 28b Rev. 7
i i Relief Request Basis i NUMBER: V2 SYSTEM: Instrument and Service Air VALVE: V72-103 CATEGORY: C CLASS: 2 FUNCTION: Service air to drywell check valve TEST REQUIREMENT: CV BASIS FOR RELIEF: Valve is normally closed and remains passive in the event of an accident. A quarterly test frequency is not required for passive valves. ALTERNATE TESTING: None V - 29 Rev. 7
Relief Request Basis NT.1MBER: V3 SYSTEM: Service and Instrument Air VALVE: V72-38A/B, V72-895/C, V72-103 l CATEGORY: A 4 CIASS: 2 FUNCTION: Primary Containment Isolation TEST REQUIREMENT: LT BASIS FOR RELIEF: Primary containment isolation valves are covered by 10 CFR 50, Appendix J. via Technical Specification Section 4.7.2b and additional administrative requirements. ALTERNATE TESTING: Leak testing in accordance with Appendix J. ( V - 30 Rev 7 1
r-f, Relief Request Basis NUMBER: V7 SYSTEM: Nuclear Boiler VALVE: V2-27A, V2-39, V2-40, V2-74, v2-77, V2-80A-D ' V2-86A-D, V2-96A CATEGORY: A CLASS: 1 FUNCTION: Primary Containment Tsolation TEST REQUIREMENT: LT BASIS FOR RELIEF: Primary containment isolation valves are covered by 10 CFR 50, Appendix J. via technical specificacion section 4.7.2.b , and additional administrative requirements. I ( , ALTERNATE TESTING: Leak testing in accordance with Appendix J.
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e Relief Request Basis NUMBER: V12 , SYSTEN: Nuclear Boiler l VALVE: 2-62-A-D, 2-64-A-D, 2-73-A-H, 2-305-A/B, 2-301-G/H CATEGORY: C CLASS: 2 TUNCTION: Excess flow check valves for instrument isolation TEST REQUIRIMENT: CV - {; 1
' EASIS TORMT:. VaJves can only be verified to shut by' leak testing which is performed during the refueling outage hydrostatic test.
Valves c'annot be exere.isad shut during power operation since shutting ' these wonid isolate -instrumentation required for m operation. ALTERNATE TESTING: Valves will be functionally rested each refueling outage. C
. V - 39 Rev. 7
i Relief Request Basis NUMBER: V20 SYSTEM: High Pressure Ccolant Injection VALVE: V23-163 CATEGORY: B CLASS: 2 FUNCTION: Post Accident Sampling Purge Isolation Valve TEST REQUIREMENT: Q, NT BASIS FOR RELIEF: Valve is normally closed and remains passive in the event of an accident. A quarterly test is not re-quired for passive valves. i ALTERNATE TEST: None t l j 4 V-47a Rev. 7
Relief Request Basis A NU}0ER: V25a SYSTD1: Residual Heat Removal l VALVE: V10-17. V10-18 CATEGORY: A CLASS: 1 FUNCTION: Primary Containment Isolation TEST REQUIRD2NT: MT BASIS FOR RELIE7: Valves cannot be exercised during power operation since there is a 100 psig interlock that prevents opening these , valves during power operation. ALTEF.NATE IIETU:G: Valves vi u be ===vc4ned during r.old shutdowns and refuel outages. ( l i ( V-52a Rev. 7
Relief Request Basis NUMBER: V25b SYSTEM: Residual Heat Removal VALVE: V10-32, V10-33 CATECORY: A CLASS: 1 FUNCTION: Primary Containment Isolation TEST REQUIREMENT: Q, MT BASIS FOR RELIEF: Valves are normally closed and remain passive in the event of an accident. A quarterly test frequency is not required for passive valves. ALTERNATE TESTING: None l \ l l V - 52b Rev. 7
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Relief Request Basis NDH3ER: Y46 ST5 TIN: Containment Atmosphere Dilution W 24 W 25 W 33 W 34 TSO-109-75A1.2, W 75A-3.4, l YALVE: VG-9A/B, VG-22A/B. NG-11A/B, NG-12A/B. NG-13A/B CATEGORY: A CLASS: 2 FUNCTION: Primary containment isolation
' TEST REQUIREMDfT: Q, MT 3 ASIS FOR RELIIT: Valves are normally closed and remain passive in the event of an accident. A guarterly test frequency is not required for passive valves.
( .' Valves will be exercised each refueling outage. ALTERNATE TESTING: l . i l e 9 I l ./N U
- 7 - 73 Rev 7
Relief Request Basis NUMBER: V46a SYSTEM: Containment Atmosphere Dilution VALVE: VG-9A/B, VG-22A/B, NG-11A/B, NG-12A/B, NG-13A/B CATEGORY: A CLASS: 2 FUNCTION: Primary containment isolation TEST REQUIREMENT: LT BASIS FOR RELIEF: Primary containment isolation valves are covered by 10 CFR 50, Appendix J, via Tech. Spec. section 4.7.2b and additional administrative requirements. ALTERNATE TESTING: Leak testing in accordance with Appendix J. A V - 73a Rev. 7
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J G-191139 l P7-1A-D SW Sht. 1 3 H - Pi - See RRR Pl,Pla,& V NP V l Notes 1,3,7,8 C-191159 P8-1A-D RilR5W Sht. 1 3 H - Pi See RRE P2,5 AP Q V .- NP V Notes 3,8 P10-1A-D RHR C-191172 2 H - See RRB P3, & Pi AP Q - V - NP V Notes 2.3,8 C-191169 P44-1A IIPCI Sht. 1&2 2 M N See RR8 P4,6 Pi AP Q V _L ' ! NP V Note 4 I P45-1A/R S t.C G-191171 2 H - - See RRB F5,P5a & Q V L NP. V Note 3 P46-1A/R CS G-191168 2 H ' See RRB P6,6 Pi. AP Q V - NP V , Notes 3.5,8 C-191174 P47-1A RCIC 1ht. 1&2 2 H N Pi AP . Q - L' , NP V See RRE P7 & Note 6 P92-1A/D FD C-191162 3 H - See Rht8 P8.P8a, P8b & Pi - - V - NP F Note 3 - C-191159 P59-1A/B RBCCW Sht. 1 3 M - Pi V See RRB P9, P10, & Tb- V Notes 3,7 9 h e e
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e , Relief Request Basis NUMBER: P$a SYSTEM: Standby Liquid Control PUMP: P45-1A/B CLASS: 2 TEST REQUIREMENT: Reference values per IWP-3100 Table 3100-1 BASIS FOR RELIEF: In accordance with Table IWP-3100-1, flow will be measured from flow element FI-ll-1. This parameter will be estab-11shed as the reference value and trends analyzed per IWP-3100. Differential pressure will not be measured as it is variable since suction is from a vented tank. Inlet pressure will only be measured to assure that there is liquid in TK-21-1A, as not to damage the pumps. ALTERNATE TESTING: Centinue testing and analysis of flow and vibration results per IWP-3200. P - 7a Rev. 7
Relief Request Basis THIS PAGE HAS BEEN DELETED l l l l l l i l P - 7b Rev. 7
y Relief Request Basis i 4 NUMBER: P9 SYSTEM: Reactor Building Closed Cooling Water PUMP: P59-1A/B I CLASS: 3 4 ! TEST REQUIREMENT: Proper lubrication level and or pressure per IWP-3110 Table IWP-3100-1. 4 BASIS FOR RELIEF: Pump has grease packed bearings and therefore cannot be checked. . ALTERNATE TESTING: None 4 i l i l l l l I I l l P - 10c Rev. 7
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- ----c Relief Request Basis P10 Water NUMBER:
Reactor Building Closed Cooling R SYSTEM: PS9-1A/B PUMP: 3 CLASS: WP-3100, Table IWP-3100-1 1 Inservice test quantities per I Inservice Test Quantities TEST REQUIREMENT:Table IWP-3100-1 specifies the hod available BASIS FOR RELIEF: d For these pumps, there is noi ribution met to be measured or observe . ssure varies due to theand d st for measuring flow. Differentialaspre regulated by temperature various loads ot be of cooling water to the system. Inlet pressure also cann h pressure control valves tinsince t e the pumps are normally running. The reference para-measured before the pump tes since the are also subject to change vibration levels l achieved. be taken, recorded, meters cannot always beMonthly readings will continue to ALTERNATE TESTING: the degree possible. and analyzed for trends to l l 1 ( P - 10d Rev. 7}}