B12743, Forwards Relief Request Providing Justification for Not Full /Part Stroke Exercising Valves Quarterly in Open to Close Position During Plant Operation,In Response to NRC 880115 Safety Evaluation on Rev 2 to Inservice Testing Program

Forwards Relief Request Providing Justification for Not Full /Part Stroke Exercising Valves Quarterly in Open to Close Position During Plant Operation,In Response to NRC 880115 Safety Evaluation on Rev 2 to Inservice Testing Program

ML20151T018
Person / Time
Site:	Millstone
Issue date:	04/20/1988
From:	Mroczka E, Sears C NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
B12743, TAC-65326, NUDOCS 8804280553
Download: ML20151T018 (7)

Text

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e NORTHEAST '

UTILITIES cenerei Orrices . seioen street, seriin. Connecticut 9 . sN. s$iNc5=5. P.O. BOX 270

<uc=< act"caN"a HARTFORD CONNECTICUT 06141-o270 k k J Ns $n(([ (203) 665-5000 April 20, 1988 Docket No. 50-423 B12743 Re: 10CFR50.55a(g)

U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555

References:

(1) J. F. Opeka letter to V. S. Noonan, "Inservice Testing (IST) Program for Pumps and Valves," dated June 25, 1986.

(2) E. L. Doolittle letter to E. J. Mroczka, "Inservice Testing Program for Pumps and Valves," dated March 9, 1987.

(3) E. J. Mroczka letter to U. S. Nuclear Regulatory Commis-sion, "Responses to the Staff's Questions on the Inservice Testin? Program," dated July 10, 1987.

(4) Summary Meeting: Inservice Testing Program for Pumps and Valves, dated July 26, 1987.

(5) E. J. Mroczka letter to V. S. Nuclear Regulatory Commis-sion, "Responses to the Staff's Questions on the IST Program for Pumps and Valves," dated September 2, 1987.

(6) E. J. Mroczka letter to V. S. Nuclear Regulatory Commis-sion, "IST Program for Pumps and Valves," dated October 7, 1987.

(7) J. F. Stolz letter to E. J. Mroczka, "IST Program for Pumps and Valves," dated January 15, 1988.

Gentlemen:

Millstone Nuclear Power Station, Unit No. 3 Inservice Testina Proaram for Pumos and Valves (TAC No. 65326)

In Reference (1), Northeast Nuclear Energy Company (NNECO) transmitted Revi-sion 1 of the Millstone Unit No. 3 Program for Inservice Testing (IST) of pumps and valves. In Reference (2), the Staff provided their questions and comments on the IST program for pumps and valves. A meeting was held between the Staff, their contractor, EG&G and NNEC0 representatives at the Millstone site on June 2 and 3, 1987 to discuss our responses to their questions (Refer-ence (2)). In References (3) and (5), NNEC0 transmitted responses to all questions and comments identified in References (2) and (4).

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U.S. Nuclear Regulatory Commission B12743/Page-2 April 20, 1988 In Reference (6), NNECO provided Revision 2 of the Millstone Unit No. 3 Program for IST of pumps and valves, which superseded the previous submittal (Reference (1)). The IST program addressed in Reference (6) covers the first ten-year inspection interval starting April 26, 1986. In Reference (7), the NRC informed NNEC0 that the IST program (Reference (6)) is acceptable for implementation. However, the Staff in their safety evaluation contained in Reference (7), identified one deficiency concerning testing of the auxiliary feedwater check valves in the IST program. The Staff required NNEC0 to address that deficiency by either correcting the IST program in accordance with IWV-3522(a) or by providing the NRC with the appropriate relief requests and supporting basis. NNECO has evaluated the Staff's concerns related to testing of the auxiliary feedwater check valves in the open to close position and hereby proposes to include auxiliary feedwater check valves 3FWA*V3, 3FWA*V7 and 3FWA*V31 in the Millstone Unit No. 3 IST program. The attached relief request provides a detailed technical justification for not full /part stroke exercising these valves quarterly in the open to close position during plant operation. '

If there are any questions regarding this submittal, please contact our licensing representative directly.

Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY

h. d . N AOUk LQ_

E. J. Mroczka M Senior Vice President

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By: C. F. Sears Vice President cc: W. T. Russell, Region I Administrator R. L. Ferguson, NRC Project Manacer, Millstone Unit No. 3 W. J. Raymond, Senior Resident Inspector, Millstone Unit Nos. 1, 2, and 3

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Relief Request: R-30 Valves: 3FWA*V3, 17, 31 Ca tego ry: C r

Code Class: 3 Function: Auxiliary Feedwater Pump Discharge Check Valves Test Requirements: Full Stroke Testing Quarterly Basis for Relief: These valves cannot be full stroke or part stroke exercised in the open to closed direction during operation. The discharge path from a single pump injects through two loop check valves in series and there is no practicable means to verify stroking of a single valve.

Alternate Testing: These valves will be partially disassembled, inspected, and manually exercined on a staggered sampling basis each refueling outage. During each disassembly, the valve internals will be inspected for structural soundness (no loose or corroded parts). In the event that a valve's full-stroke capability is questionable, additional valves will be dissassembled until one hundred percent (100%) of the valves identified in this group have been disassembled and inspected.

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Systems Main and Document No.: IST-3.0 ,

Asamtliary Feed Revision No.: 2 Drawing: 25212-26930 Pages 2 of 6 MII1 STONE POINT UNIT 3 INSERVICE TESTING PROGRAM SIZE POSITICN ret 10TE VALVE CODE CATGY. NORMAL / FAILURE POSITION TEST REQUIRED RELIEF COretENTS/

NUttBER CODE CLASS TYPE ACTUATION FUNCTION MODE INDICATOR PERIOD TESTING COORD. REQUESTS SPECIAL REQUIREDENTS 3-IVS-V34 1882 GA. Hydraulic Open/ FC Yes CS FS H-6 CSR-18 CTV-41C Closed NT (Sh. 1)

FT BI PI 3-FWS-V36 1682 GA. Air Open/ FC Yes CS FS F-9 CSR-17 FCV-540 Closed MT (Sh. 1)

FT BI FI 3-FWS-VJ9 6B2 CA. Air Closed */ FC Yes CS FS F-8 CSR-19

• Throttled at low LV-580 Closed Prr (Sh. 1) power IT BI PI 3-lWS-V41 1882 CA. Hydraulic Open/ FC Yes CS FS H-8 CSR-18 CTV-41D Closed NT (Sh. 1)

FT BI PI 3-IVs-V898 20C2 CHK. - Open/ - - CS FS I-2 CSR-20 Closed (Sh. 1) 3-IVS-V899 20C2 CHK. - Open/ - - CS FS I-9 CSR-20 Closed (Sh. 1) 3-IVS-V920 20C2 CHK. - Open/ - -

CS FS I-7 CSR-20 Closed (Sh. 1) 3-IVS-V921 20C2 CHK. - Open/ - -

CS FS I-5 CSR-20 Closed (Sh. 1) 3-FWA-V3 6C3 CHK. -

Closed / - -

CS FS H-3 CSR-21 Open-Closed (Sh. 2) R-30 3-PVA-b7 3C3 CPK. -

Closed / - - CS FS J-4 CSR-21 open (Sh. 2) 3-fvA-V8 482 CA. Motor Open/ - -

Q FS K-5 NOV-JSA Open-Closed BI MT (Sh. 2)

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WUMBER CODE CLASS TYPE ACTUATION FUNCTION MODE INDICATOR PERIOD TESTING COORD. REQUESTS- 'SPECIAL REQUIREMENTS 3-FMA-V9 4C2 CHE. -

Closed / - - CS FS L-4 CSN-30 Open (Sh. 2) 3- FMA-V 12 3CJ CHK. -

Clemed/ - - CS FS J-2 CSR-21 Open (Sh. 2) 3-FWA-V13 432 GA. Motor Open/ - -

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CS FS I-7 CSR-21 Open (Sh. 2) 3-INA-V22 482 GA. Motor Open/ - -

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CS FS K-7 CSR-30 Open (Sh. 2) 3-INA-V26 3C3 CHK. -

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CS FS H-10 CSR-21 Open (Sh. 2) 3*lWA-V27 482 GA. Motor Open/ - -

Q FS M-9 tyrV-3SC open-Closed MT (Sa. , 2)

BI PI 3-tvA-V28 4C2 CHX. -

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CS FS J-10 CSR-30 Open (Sh. 2) 3-tvA-V31 8C3 CMK. -

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' Systems Main and Document No.: 187-3.0 -

Aus111ary Feed Revision No.s 2 Drawing: 25212-26930 Page 5 of 6 I

MILLSTONE POIKT UNIT 3 INSERVICE TESTING g PkOGMAN SIZE POSITION REMOTE VALVE CODE CATGY. NOkMAL/ FAILURE POSITION TEST REQUIRED RELIEF COIWSE3CS/

NUMhER CODE CLASS TYPE ACTUATION FUNCTION MODE INDICATOR PERIOD TESTING COORD. REQUESTS SPECIAL REQUI N 3-7WA-V47 3C3 CHK. -

Closed / - - CS FS J-3 CSR-21 Open (Sh. 2) 3=IWA-V48 432 GL. Solenoid Open/ FO -

Q FS K-3 1:V-3f,D Open-Closed NT (Sh. 2) 17 BI PI 3-#NA-V53 383 GA. Air Open/ FC Yes Q FS D-4 AOV-25 Closed NT (Sh. 2)

ET BI P1 3-EMA-V54 383 GA. Air Open/ FC Yes Q FS D-5 AOV-26 Closed NT (Sh. 2)

PT B1 PI 3-fWA-Ve3 BB3 GA. Air Closed / FC Yes Q FS B-9 AOV-238 Clemed NT (hh. 2)

FT BI P1 3-IVA-V65 883 GA. Air Closed / FC Yes Q FS E-S AOV-21A Closed NT (Sh. 2)

IT BI PI 3-yvA-85 1%C3 REL. -

Closed / - -

• SRV B-10 *Per IW-3511 test schedule kV45 Open (Sh. 2) 3-tvA-V849 1%C3 REL. -

Closed / - -

• SRV F-5 *Per IW-3511 teet schedule RY44A Open (Sh. 2) 3-fvA-850 14C3 REL. -

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• SRV C-9 *Per IW-3511 test schedule Open (Sh. 2)

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