ML17285A577

Discusses Plant ATWS Mod Schedule.Two Issues Re Logic Relays & Topical Rept Need Clarification

ML17285A577
Person / Time
Site:	Columbia
Issue date:	06/16/1989
From:	Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GO2-89-110, NUDOCS 8906280058
Download: ML17285A577 (3)

Text

AC CELE RATED DI SI'MBU'2 ON DEMON STRA.TION SYSTEM REGULATC ZNFORMRTZON DZSTRZBUTZON@:STEM (RZDS)

ACCESSION NBR:8906280058 DOC.DATE: 89/06/16 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)

SUBJECT:

Discusses plant ATWS mod schedule.Two listed issues need clarification. R DISTRIBUT1ON CODE: A055D COPIES RECEIVED:LTR TITLE: OR/Licensing Submittal: Salem ATWS I ENCL +

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NRR/DEST/ESB 8D 1 1 NRR/DEST/ICSB 7 1 NRR/DEST/PSB 8D 1 0 NRR/DLPQ/PEB 10 0 NRR/DOEA/GCB 11 1 0, NUDOCS-ABSTRACT 1 '

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~H WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O. Box 968 ~ 3000 George Washington Way ~ Richland, Washington 99352 June 16, 1989 G02"89-110 Docket No. 50-397 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station P1-137 Washington, D.C. 20555 Gentlemen:

Subject:

NUCLEAR PLANT NO. 2 ANTICIPATED TRANSIENTS WITHOUT SCRAM IMPLEMENTATION SCHEDULE

Reference:

Letter, G02-85-718, G.C. Sorensen (SS) to W. R. Butler (NRC), "ATWS Implementation Schedule",

dated October 14, 1985

2) Letter, R.B. Samworth (NRC) to G.C. Sorensen (SS),

"ATWS Rule 10CFR 50.62 Relating to ARI and RPT Systems", dated December 6, 1988

3) Letter, G02-89-055, G.C. Sorensen (SS) to NRC "Provisions for ATWS Recirculating Pump Trip".

dated April 5, 1989

4) BWROG Topical Report NEDE-31096-P, "Anticipated Transient Without Scram; Response to NRC ATWS Rule 10CFR50.62", dated December 1985 In Reference 1) we informed the NRC that ATWS modifications required for WNP-2 to be in compliance with the rule would be completed during the Spring 1988 refueling outage. While this commitment for modifications was satisfied, we believe two issues need to be clarified.

1) In Reference 2) the Staff requested that the RPT feature be changed to coincident logic and that provisions be made for on line testing of the logic relays used to energize tHe breaker coil. In Reference 3) we commit-ted to these changes to be implemented during our Spring 1990 refueling outage.

8906280058 8906kb posK PDR ADOC)( 05000397 P PNU

Page Two ANTICIPATED TRANSIENTS WITHOUT SCRAM IMPLEMENTATION SCHEDULE

2. Reference 4) is the BWR Owner's Group topical report for ATWS. Table A-1 of this report states that equipment qualification for ARI, SLC and RPT will be to the conditions associated with anticipated operational occurrences and to the ATWS conditions up to the time the requried function is completed. For WNP-2 this is addr essed in the SER included with Reference 2).

In meeting the environmental qualifications we have had difficulties with the organization with whom we contracted to perform the required analyses to confirm the environmental conditions. We are at this time evaluating various options with this organization and others.

As the RPT logic and testability concerns are to be resolved by the Spring 1990 outage, our objective is to complete equipment qualification documenta-tion on this same schedule. However the Contractor's performance difficul-ties makes us unable to provide a stronger commitment at this time. We will provide a firm schedule in December 1989. This is the date the Contractor's work is to be completed and our final task of confirming the equipment quali-fication satisfies environmental conditions can begin. We will commit to also have the ARI, SLC and RPT equipment qualification confirmed on this schedule.

Very truly yours, g+C~ ~g G. C. Sorensen, Manager Regulatory Progr ams AGH/bk cc: JB Martin - NRC RV NS Reynolds - BCP8R RB Samworth - NRC DL Williams - BPA/399 NRC Site Inspector - 901A