ML17284A622

Documents Util Outage Schedule Change & That Licensee Has Performed SE in Support of Current Outage Plan,Per 980416 Request for Amend Re ECCS Suction Strainers

ML17284A622
Person / Time
Site:	Columbia
Issue date:	05/20/1998
From:	Coleman D WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GO2-98-087, GO2-98-87, NUDOCS 9805290073
Download: ML17284A622 (5)

Text

CATEGORY REGULA Y INFORMATION DISTRIBUTI SYSTEM (RIDS)

ACCESSION NBR:9805290073 DOC.DATE: 98/05/20 NOTARIZED: NO DOCKET FACIL:50-3".~'PPSS Nuclear Project, Unit 2, Washington Public Powe 05000397 AUTH.NAY~~ AUTHOR AFFILIATION COLEMAN, L~W. 'ashington Public Power Supply System RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Documents util outage schedule change & that licensee performed SE in support of current outage plan,per 980416 request for amend re ECCS suction strainers.

DISTRIBUTION CODE: AOOID COPIES RECEIVED:LTR I ENCL 0 SIZE:

TITLE: OR Submittal: General Distribution NOTES: E RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD4-2 LA PD4-2 PD POSLUSNY,C INTERNAL: ACRS FILE CENTER 1 NRR/DE/ECGB/A /DE EMCB NRR/DRCH/HICB NRR/DSSA/SPLB NRR/DSSA/SRXB NUDOCS-ABSTRACT OGC/HDS3 EXTERNAL: NOAC NRC PDR D

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NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 TOTAL NUMBER OF COPIES REQUIRED: LTTR 14 ENCL 0

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WASHINGTON PUBLIC POWER SUPPLY SYSTEM PO. Box 968 ~ Richland, Washington 99352-0968 May 20, 1998 G02-98-087 Docket No. 50-397 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 Gentlemen:

Subject:

%NP-2 OPERATING LICENSE NPF-21 UPDATED INFORMATIONREGARDING REQUEST FOR AMENDMENT:

EMERGENCY CORE COOLING SYSTEM SUCTION STRAINERS to NRC

Reference:

Letter G02-98-071 dated April 16, 1998, P.R. Bemis (Supply System)

Document Control Desk, WNP-2 Operating License NPF-21 Request for Amendment:

Emergency Core Cooling System Suction Strainers License by May 22, 1998 to allow the The referenced letter requests a change to the WNP-2 Operating suction strainers to be fabricated from newly designed Emergency Core Cooling System (ECCS) pump in excess of 90,000 psi. We cold-worked austenitic stainless steel with a surface yield strength

- a change in the facility described in the requested this amendment as required by 10 CFR 50.59(c) safety question (USQ). In Reference 1, we Safety Analysis Report which involves an unreviewed ECCS systems are not required to committed to install the suction strainers only when their respective be operable (some in Mode 4 and the remainder in Mode 5). As of May 13, 1998, all new suction strainers were installed in accordance with this commitment.

allow restart of WNP-2 following completion of Approval of the proposed change is still necessary to the R-13 refueling. However, the outage is ahead of schedule and the updated outage plan is to re-evaluated this condition in accordance commence vessel drain down on May 21, 1998. We have strength does not constitute a USQ with 10 CFR 50.59 and found that exceeding the 90,000 psi yield 200'F.

in Modes 4 or 5 with reactor vessel water temperature 5 PDR ADOCK 0500 PDR P

,UPDATED INFORMA~REGARDING REQUEST FOR MENT:

EMERGENCY CORE Cl&LINGSYSTEM SUCTION STRA We have previously discussed this outage schedule change, and our plans to use 10 CFR 50.59 to determine that a USQ does not exist in Modes 4 or 5 with reactor vessel water temperature 6 200',

with members of the NRC staff This letter is intended to document our outage schedule change and that we have performed a safety evaluation in support of the current outage plan.

The revised suction strainer safety evaluation identifies that a USQ exists with the 90,000 psi yield stress acceptance limit exceeded when the reactor vessel temperature is above 200'. Therefore, this letter does not request a change in your schedule to review and approve the amendment by May 22, 1998 as requested in Reference 1 to support reactor restart following completion ofR-13.

Should you.have any questions or desire additional information regarding this matter, please contact me or P. J. Inserra at (509) 377-4147.

Respectfully, D.W. Coleman Manager, Regulatory Affairs Mail Drop PE20 cc: EW Merschoff- NRC RIV KE Perkins, Jr. - NRC RIV, Walnut Creek Field Once C Poslusny, Jr. - NRR NRC Sr. Resident Inspector - 927N DL Williams - BPA/399 PD Robinson - Winston &, Strawn DJ Ross - EFSEC

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