ML20063M804

Final Deficiency Rept Re Failure of Westinghouse EMD Valves, Also Submitted Per IE Bulletin 81-02.Corrective Action Taken or Planned for Affected Valves Prior to Fuel Loading Encl

ML20063M804
Person / Time
Site:	Wolf Creek, Callaway, 05000000
Issue date:	09/03/1982
From:	Petrick N STANDARDIZED NUCLEAR UNIT POWER PLANT SYSTEM
To:	Jay Collins, James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
REF-SSINS-6820 10CFR-050.55E, 10CFR-50.55E, IEB-81-02, IEB-81-2, SLNRC-82-038, SLNRC-82-38, NUDOCS 8209160133
Download: ML20063M804 (4)

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i SNUPPS Standardered Nuclear Unit Power Plant System 5 Choke Cherry Road Rockwalle, Maryland 20850 (301)869 8010 September 3, 1982 SLNRC 82- 038 FILE:

0491.10.2 SUBJ:

Final Report: Failure of Westinghouse EMD Valves; 50.55(e) Report 80-6; IE Bulletin 81-02 Mr. James G. Keppler Administrator, Region III U. S. Nuclear Regulatory Connission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Mr. John T. Collins Administrator, Region IV U. S. Nuclear Regulatory Commission Suite 1000, Parkway Central Plaza Arlington, Texas 76012 Docket Nos:

STN 50-482 and STN 50-483

References:

1.

SLNRC 80-54, dated November 26, 1980 2.

SLNRC 81-22, dated April 1,1981 3.

SLNRC 81-46, dated June 19, 1981 4.

SLNRC 81-59, dated July 22, 1981 5.

SLNRC 8i-125, dated November 16, 1981 Gentlenen:

1 The referenced correspondence reported on a potential deficiency involving Westinghouse EMD Valves. These letters were submitted either to report a 10 CFR 50.55(e) matter or to respond to IE Bulletin 81-02 and its supplement and provide a description of the deficiency and its safety implications.

The purpose of this letter is to provide the final report on this matter for the SNUPPS Utilities, Kansas Gas and Electric Company, and Union Electric Company.

The enclosure to this letter lists all the Westinghouse EMD valves in the SNUPPS design that could have been affected by the potential deficiency.

These valves were listed in Reference 4 and 5 with the exception of valves 8037 A,B (presurizer relief tank drain isolation valves) which have been added to the enclosed list.

Also, some refinements have been made to the Westinghouse EMD model reference numbers.

8209160133 820903~

PDR ADOCK 05000482 S

pon SEP 10 }ggg i

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SLNRC 82- 038 Page Two i

Specific corrective action required for each valve had not been determined at the time of the previous letters.

The enclosed list provides the correctve action taken or planned for each affected valve.

The corrective action has been completed on all valves except three at Callaway and five at Wolf Creek.. The remaining work will be completed prior to fuel loading.

Very truly yours, he.-

Nicholas A. Petrick RLS/mtk5a24-25

Enclosure:

W EMD Valve Information cc:

G. L. Koester KGE D. T. McPhee KCPL D. F. Schnell UE J. H. Neisler NRC/ CAL T. E. Vandel NRC/WC J. Konklin NRC, Region III Record

_ _... _.. -. _.,. _.. _. _. -. ~... -. _ _ _ - - -.

Enclosure to SLNRC 82- 038 Westinghouse EMD Valve Information Valve W EMD Corrective Valve Location Fbdel Action Function Number Reference (Note 1)

Chg. Line 8105, 8106 3GM78FNA B

1s01.

PORV Block 8000A, B 3GM88FNB B

BIT Isol.

8801A, B 4GM78FNA B*

SI Pump HL Recirc. Isol.

8802A, B 4GM78FNC C

BIT Isol.

8803A, B 4GM78FNA B*

SI Pump Disch. Cross.

8821A, B 4GM77 FHA B

SI Pump CL Inj. Isol.

8835 4GM78FNC C

PRT Drain Isol.

8037A, B 4GM72FBB A

VCT Outlet LCV 1128, C 4GM72FBA A

CCP Suction to SI Pump Suction 8807A, B 6GM72FBA A

CCP Suction to SI Pump Suction 8924 6GM72FBA A

SI Pump Suction Cross.

8923A, B 6GM72FBA A

RWST to CCP Suction LCV 1120, E 8GM72FBA B

RHR HX Disch, to CCP Suction 8304A 8GM74FFC B

RHR HX Disch.

to SI Suction 88048 8GM74FFE B

RWST to SI Pump Suction 8806A, B 8GM72FBA B

RHR Disch.

Cross.

8716A, B 10GM74FFA A

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Enclosure to SLNRC 82-038 Page Two Westinghouse EMD Valve Information Valve W EMD Corrective Valve Location Model Action Function Number Reference (Note 1)

Accumulator Disch.

8808A, B, C, D 10GM78FND C

RHR Pump CL Inject.

8809A, B 10GM78FNC C

RHR Suction Isolation 8701A, B 8702A, B 12GM88SFB,F C

RWST to RHR Pep Suction 8812A, B 14GM74FFC C

Sep Suction 8811A, 8 14GM74FF0 C

Note 1 A - Adjust the operator torque switch settings (both open and close).

B - Change from torque control closure to limit control closure. Readjust the limit switch to provide a given stem loading plus increase the operator gear ratio.

C - No corrective action required.

As-shipped valve satisfies functional requirements.

• - Identified in SLNRC 81-59 as meeting functional requireraents.

However, corrective action was judged to be prudent.

RLS/mtk5a26-27 i

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