ML20205T585

Forwards Safety Evaluation Re Requested Relief from Quarterly Full Stroke Exercise Frequency for Reactor Depressurization Sys (Rds) Depressurizing Valves & post- Maint Operability Testing Requirements Following Rds

ML20205T585
Person / Time
Site:	Big Rock Point File:Consumers Energy icon.png
Issue date:	11/04/1988
From:	Scott W Office of Nuclear Reactor Regulation
To:	Berry K CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
Shared Package
ML20205T588	List: ML20205T585 ML20205T591
References
TAC-68898, TAC-68899, NUDOCS 8811140294
Download: ML20205T585 (3)

Text

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. . .O November 4, 1988 Docket No. 50-155 DISTRIBUTION

. DURE MLE A WSCOTT Mr. Kenneth W. Berry 'NRC & LOCAL'PDRs OGC Director, Nuclear Licensing PD31 GRAY FILE EJORDAN ,

Consumers Power Company GHOLAHAN BGRIMES j 1945 West Parnall Road MVIPGILIO ACRS(10)

Jackson, Michigan 49201 RINGRAM JDURR

SUBJECT:

BIG ROCK POINT PLANT - INSERVICE TESTING (IST) RELIEF FOR REACTOR DEPRESSURIZATION SYSTEM VALVES (TAC NOS. 68898 AND 68899)

By letter dated July 5,1988, you submitted, among others, requests for relief from two ASME Code valve testing requirements. One requested relief was from the quarterly full stroke exercise frequency for the reactor depressurization system (RDS) depressurizing valves. The other requested relief was from post maintenance operability testing requirements following RDS depressurizing valve pilot valve assembly r:::: oval and reinstallation. The enclosed Safety Evaluation (SE) provides the results of our review of the two requests for relief.

We have determined that the quarterly full stroke exercise frequency requirement is impractical for the RDS depressurizing valves, for which relief is being granted, and, pursuant to 10 CFR 50.55a(g)(6)(i), that the granting of relief is authorized by law, will not endanger life or property or the common defense and security, and is otherwise in the public interest. In making this determination, we have given due consideration to the burden that could result if those requirements are imposed on your facility. This letter grants that relief.

Further, we have determined that, since an RDS depressurizing valve pilot valve assembly is a separate entity from an RDS depressurizing main valve, any repair activity performed on only the pilot valve assembly should not affect the operation and integrity of the main valve and, therefore, relief from post maintenance operability testing requirements for the RDS depressurizing main  ;

valve following removal, repair, testing, and/or reinstallation of only an RDS depressurizing valve pilot valve assembly is not required.

Sincerely, gg MN c i

Wayne E. Scott, Jr. , Project Manager l Project Directorate III-1 Divi sion of Reactor Projects - III, IV, V l

& Special Projects (

Enclosure:

/ l As stated

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% November 4, 1988 Docket No. 50-155 i Mr. Kenneth W. Berry Director, Nuclear Licensing Consumers Power Company 1945 West Parnall Road Jackson, Michigan 49201

Dear Mr. Berry:

1 SUBJECT. BIG ROCK POINT PLANT - INSERVICr TES11NG (IST) RELIEF FOR REACIOR DEPRESSURIZATION SYSTEM VALVES (TAC NOS. 68898 AND 68899)

By letter dated July 5,1988, you subtritted, among others, requests for relief from two ASME Code valve testing requirements. One requested relief was from the quarterly full stroke exercise frequency for the reactor depressurization system (RDS) depressurizing valves. The other requested relief was from post maintenance operability testing requirements following RDS depressurizing valve pilot valve assembly removal and reinsta11ation. The enclosed Safety Evaluation (SE) provides the results of our review of the two requests for relief.

We have determined that the quarterly full stroke exercise frequency requirement is impractical for the RDS depressurizing valves, for which relief is being granted, and, pursuant to 10 CFR 50.55a(g)(6)(i), that the granting of reliei is authorized by law, will not endanger life or property or the common defense and security, and is otherwise in the public interest. In making this determination, we huve given due consideration to the burden that could result if those requirements are imposed on your facility. This letter grants that relief.

Further, we have determined that, since an RDS depressurizing valve pilot valve assembly is a separate entity from an RDS depressurizing main valve, any repaie activity performed on only the pilot valve assembly should not affect the operation and integrity of the main valve and, therefore, relief from post maintenance operability testing requirements for the RDS depressurizing main i

valve following removal, repair, testing, and/or reinstallation of only an RDS j depressurizing valve pilot valve assembly is not required.

Sincerely, 4, arm  %

Wayne E. Scott, Jr. , Project Manager Project Directorate III-1 Division of Reactor Projects - III, IV, V

& Special Projects

Enclosure:

As stated cc w/ enclosure:

See attached

l ., .

Mr. Kenneth W. Berry Consumers Power Company Big Rock Point Plant cc:

Mr. Thomas A. McNish, Secretary Consumers Power Company 212 West Michigan Avenue -

Jackson, Michigan 49201 Judd L. Bacon, Esquire Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 Mr. Thomas W. Elward Plant Manager Big Rock Point Plant i 10269 U.S. 31 North Charlevoix, Michigan 49720 Mr. Bud Heeres County Commissioner 303 Sheridan Charlevoix, Michigan 49720 Office of the Governor ,

Room 1 - Capitoi Building Lansing, Michigan 48913 7 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Nuclear Facilities and Environmental Monitoring Section Office )

Division of Radiological Health P. O. Box 30035 Lansing, Michigan 48909 i

U.S. Nuclear Regulatory Commission

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Resident Inspector Office Big Rock Point Plant 10253 U.S. 31 North Charlevoix, Michigan 49720 l

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