ML13331A266

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Informs That Util Performed Preliminary Review of Adequacy of Min Flow Bypass Lines for safety-related Centrifugal Pumps,Per NRC Bulletin 88-004.Review Indicate That Identified Concerns Not Applicable to Plant
ML13331A266
Person / Time
Site: San Onofre, University of California - Irvine  Southern California Edison icon.png
Issue date: 07/26/1988
From: Medford M
SOUTHERN CALIFORNIA EDISON CO.
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
IEB-88-004, IEB-88-4, NUDOCS 8808030108
Download: ML13331A266 (2)


Text

Southern California Edison Company P. 0. BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD. CALIFORNIA 91770 M. 0. MEDFORD TELEPHONE MANAGER OF NUCLEAR ENGINEERING July 26, 1988 IS118 302-1749 AND LICENSING U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 Gentlemen:

Subject:

Response to NRC Bulletin 88-04 Docket Nos. 50-206, 50-361 and 50-362 San Onofre Nuclear Generating Station Units 1, 2 and 3 Action Item 3 of USNRC Bulletin 88-04 requested licensees to evaluate the adequacy of minimum flow bypass lines for safety-related centrifugal pumps with respect to damage resulting from operation and testing in the minimum flow mode. It was requested that the results of this evaluation be provided to NRC within 60 days of receipt of the bulletin. Southern California Edison Company (SCE) has performed a preliminary review of the specified concerns.

The results of this review indicate that the identified concerns are not applicable to San Onofre Units 1, 2 or 3. However, SCE is evaluating the need to participate in a Combustion Engineering Owner's Group (CEOG) effort currently being formulated to address minimum flow concerns for the High Pressure Safety Injection, Low Pressure Safety Injection and Containment Spray systems. It is anticipated that a schedule for completion of the CEOG effort will be available within 60 days. Therefore, SCE will provide NRC with a schedule for our final response to the subject bulletin in approximately 60 days.

If you have any questions, please contact me.

Very truly yours, cc:

J. B. Martin, Regional Administrator, NRC Region V F. R. Huey, NRC Senior Resident Inspector, San Onofre Units 1, 2 and 3 8808030108 880726

/

PDR ADOCK 05000206 Q

PNU

ACCELERATED DISTRIBUTION DEMONSTRATION SYSTEM REGULAT INFORMATION DISTRIBUTIO YSTEM (RIDS)

ACCESSION NBR:8808030108 DOC.DATE: 88/07/26 NOTARIZED: NO DOCKET #

FACIL:50-206 San Onofre Nuclear Station, Unit 1, Southern Californ 05000206 50-361 San Onofre Nuclear Station, Unit 2, Southern Californ 05000361 50-362 San Onofre Nuclear Station, Unit 3, Southern Californ 05000362 AUTH.NAME AUTHOR AFFILIATION MEDFORD,M.O.

Southern California Edison Co.

RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

IR

SUBJECT:

Informs that util performed preliminary review of adequacy of min flow bypass,per NRC Bulletin 88-004.

DISTRIBUTION CODE: IE11D COPIES RECEIVED:LTR _ ENCL 0 SIZE:

D TITLE: Bulletin Response (50 DKT)

S NOTES:License Exp date in accordance with 10CFR2,2.109.

05000206 RECIPIENT COPIES RECIPIENT COPIES A

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EXTERNAL: LPDR 2

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