ML20135C049

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Responds to Question Re 850623 High Point Vent Leak at Facility.Requirements of 10CFR50,App B Applied to Nuclear Class 1 Section 11N1 of High Point Ventlines
ML20135C049
Person / Time
Site: Rancho Seco
Issue date: 09/09/1985
From: Reinaldo Rodriguez
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To: Thompson H
Office of Nuclear Reactor Regulation
References
RJR-85-459, TAC-59388, NUDOCS 8509110269
Download: ML20135C049 (1)


Text

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(,,)SMUD SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S Street, P.O. Box 15830 Sacramento CA 95813; (916) 452-3211 AN ELECTRIC SYSTEM SEnVING THE HEART OF CAllFOnNIA RJR 85-459 September 9,1985 DIRECTOR OF NUCLEAR REACTOR REGULATION ATTENTION HUGH L THOMPSON JR DIRECTOR DIVISION OF LICENSING U S NUCLEAR REGULA10RY COMMISSION WASHINGTON D C 20555 00CKEf 50-312 RANCHO SECO NUCLEAR GENERATING STATION UNIT N0 1 JUNE 23, 1985 HIGH POINT VENT LEAK In a telephone conversation on August 30, 1985, with members of my staff, the Rancho Seco NRC Project Manager, Syd Miner, requested the District respond to a question concerning the high point vent leak at Rancho Seco.

The question and District's response follow:

Q.

Were the requirements of 10CFR50 Appendix B applied to the 11N1 (nuclear Class 1) section of RCS vent lines installed in 1972 and subsequentley modified in 19837 A.

The District did apply the requirements of 10CFR Appendix B to the nuclear Class 1 section (llN1) of the high point vent lines.

Included in the application of the Appendix B requirements are:

The vent line piping installation in 1972, up to and including the first manual isolation valve, and The branch line, installed in 1983, up to and including the second isolation valve.

The Dis ~crict committed to the Appendix B requirements originally in the SMUD QA ManJal (prepared by BeChtel) at the time of Construction and subsequently in the SMUD QA Manual currently in effect.

e any questions, contact Jerry Delezenski at Rancho Seco.

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