NRC Generic Letter 1982-27

NRC Generic Letter 1982-027: Transmittal of NUREG-0763, Guidelines for Confirmatory In-Plant Tests of Safety-Relief Valve Discharges for BWR Plants and NUREG-0783, Suppression Pool Temperature Limits for BWR Containments.

ML031080532
Person / Time
Issue date:	11/15/1982
From:	Eisenhut D Office of Nuclear Reactor Regulation
To:
References
NUREG-0763, NUREG-0783 GL-82-027, NUDOCS 8211230066
Download: ML031080532 (2)

November 15, 1982 ALL BOILING WATER REACTOR LICENSEES OF OPERATING REACTORS (EXCEPT LACROSSE,

BIG ROCK POINT* DRESDEN 1,HUMBOLDT BAY) APPLICANTS FOR AN OPERATING LICENSE

AND HOLDERS OF CONSTRUCTION PERMITS. -(GENERIC LETTER NO. 82.27)

Gentlemen:

SUBJECT: TRANSMITTAL. OF NUREG-0763, "GUIDELINES FOR CONFIRMATORY IN-PLANT

TESTS OF SAFETY-RELIEF VALVE DISCHARGES FOR BWR PLANTS," AND NUREG-0783v

"SUPPRESSION POOL TEMPERATURE LIMITS FOR BWR CONTAINMENTS."

Enclosed are copies of NUREGs-0763 and 0783. These documents are being issued to provide guidance that the NRC staff believes should be followed to meet the rquirements of General Design Criteria 16 and 29 of Appendix A to 10 CFR Part 50.

These NUREGs are not a substitute for the regulations, and compliance is not a requirement. However, an approach or method different from the guidance contained herein will be accepted if the substitute approach or method provides a basis for determining that the requirements of General Design Criteria 16 and 29 have been met.

NUREG-0763 provides guidance for: (1)determining if in-plant safety relief valve (SRV) tests are required ~(2) formulating appropriate test matrices, (3)

establishing test procedures, (4)selecting necessary instrumentation, and (5)

reporting test results. Implementation of the guidelines isdescribed inSection

9 of the report. It should be noted,, however, that the guidelines are intended for providing information for SRV in-plant tests which are still inthe planning stage.

If the licensees/applicants have performed or installed instrumentation for SRV

in-plant tests in accordance with the acceptance criteria specified in NUREG-0661,

"Mark I Containment Long Term Program," we find this approach acceptable.

NUREG-0783 provides:( (1 acceptance criteria related to the suppression pool temperature limits, (2) the events required to analyze the suppression pool temperature response, (3)assumptions used for the analyses. and (4)require- ments for the suppression pool temperature monitoring system. Implementation of this Issue is described in Section 6 of the report. The acceptance criteria specified in the report can be considered a relaxation of the existing suppression pool temperature limit criteria which are specified in NUREG-0661 (Mark I) and NUREG-0487 "Mark II Containment Lead Program Load Evaluations and Acceptance Criteria."

The application, reporting and record-keeping requirements contained in NUREG-0763 have been approved by the Office of Management and Budget: 0MB approval No. 3150-0074 which expires July 31, 1983.

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NRC FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD COPY MGM 1981-4335-9W

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The application, reporting and record-keeping requirements contained in NUREG-0783 have been approved by the Office of Management and Budget; oMB

Approval No. 3150-0082 which expires December 31, 1982.

Darrell G. Eisenhut, Director Division of Licensing Office of Nuclear Reactor Regulation Enclosures as stated cc Service List w/o enclosures DL:-ORB#Z

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NRC FORM 318 (1080) NRCM 0240 O FFICIA L USGPO: 1981-