ML17285B364

Advises That All Equipment Identified W/Atws Safety Function Acceptable from Environ Qualification Standpoint. ATWS Equipment Has Been Determined to Be Qualified to Normal Design Environ Conditions Followed by ATWS Accident Environ

ML17285B364
Person / Time
Site:	Columbia
Issue date:	06/29/1990
From:	Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GO2-90-116, NUDOCS 9007100170
Download: ML17285B364 (6)

Text

ACCELERATED DIRIBUTION DEMONSTRATION SYSTEM I

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ACCESSION NBR:9007100170 DOC.DATE: 90/06/29 NOTARIZED: NO

. DOCKET FACIL:50-397 WPPSS Nuclear Project, Unit 2, Washington Public Powe 05000397 AUTH. NAME AUTHOR AFFILIATION SORENSEN,G.C. Washington Public Power Supply System RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

Advises that all equipment. identified w/ATWS safety j

SUBJECT:

functions acceptable from environ qualification standpoint.

DISTRIBUTION CODE: A055D COPIES RECEIVED:LTR ENCL @ SIZE: Ck. D TITLE: OR/Licensing Submittal: Salem ATWS Events GL-83-28 NOTES RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD5 LA 1 PD5 PD SAMWORTH,R D

INTERNAL: ACRS 6 NRR/DEST/ESB 8D NRR/DLPQ/LPEB10 ,1 NRR/DOEA/OGCB11 D NRR/DST/SICB 7E NRR/DST/SPLB 8D OC/LFMB REG F25'M, OGC/HDS2 RES/DSIR/EIB EXTERNAL: LPDR NRC PDR NSIC D

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D D

NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WAS%! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 23 ENCL

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WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O. Box 968 ~ 3000 George Washington Way ~ Richland, Washington 99352 June 29, 1990 G02-90-116 Docket No. 50-397 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Gentlemen:

Subject:

NUCLEAR PLANT NO. 2, OPERATING LICENSE NPF-21 RESOLUTION OF ANTICIPATED TRANSIENTS WITHOUT SCRAM (ATWS) FOR WNP-2

Reference:

Letter, G02-89-231, GC Sorensen (SS) to NRC, "Schedule for Resolu-tion of Anticipated Transients Without Scram'ATWS) for WNP-2",

dated December 28, 1989.

In the referenced letter, the Supply System indicated that we expected to be able to confirm that the ATWS equipment for WNP-2 satisfies the environmental qualification requirements of the ATWS rule (10 CFR 50.62) by June 29, 1990. The purpose of this letter is to advise the NRC that we have successfully completed this action.

The ATWS equipment has been determined to be qualified to normal design environmental conditions followed by an ATWS accident environment by the use of either:

a) Materials analysis of ageable components including test reports when available; b) Existing qualification to other accident profiles (LOCA, HELB) that encompass the ATWS profile; or 9007100170 900629

,PDR ADCCK 05000397 P PDC

Page Two SCHEDULE FOR RESOLUTION OF ANTICIPATED TRANSIENTS WITHOUT SCRAM (ATWS) FOR WNP-2 c) Location in a mild environment that is not affected by the ATWS accident environment.

All equipment identified with an ATWS safety function has been reviewed and found to be acceptable from an environmental qualification standpoint.

Very truly yours, G. C. $ rensen, Manager Regulatory Programs HLA/bk Attachments cc: JB Martin - NRC RV NS Reynolds - BCP&R RB Samworth - NRC DL Williams - BPA/399 NRC Site Inspector - 901A P Eng NRC

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