ML20209F479
| ML20209F479 | |
| Person / Time | |
|---|---|
| Issue date: | 01/30/1987 |
| From: | Jordan E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | George J TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC), WESTINGHOUSE OPERATING PLANTS OWNERS GROUP |
| References | |
| IEB-85-005, IEB-85-5, NUDOCS 8702050111 | |
| Download: ML20209F479 (3) | |
Text
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JAN 3 01987 Mr. Joe George, Chairman Westinghouse Owners' Group Advisory Comittee Texas Utility Electric Company 400 North Olive Street Lock Box 81 Dallas, Texas 75201
Dear Mr. George:
Portland General Electric Company's letter of August 15, 1986, forwarded a copy of WOG-86-168, " Westinghouse Owners' Group Safety-Related MOV Program Final Report." This report was to be used by the member utilities as a basis for the selection of valves and their maximum expected differential pressures in preparation of their responses to IE Bulletin 85-05, " Motor-0perated Valve Comon Mode Failures During Plant Transients Due to Improper Switch Settings."
The fonnal review of the Westinghouse Owners' Group report has been completed.
The detailed coments are enclosed.
It is requested that you notify your member utilities of our coments, revise the Westinghouse.0wners' Group report to address the concerns raised by our coments, and resubmit the revised report as soon as possible.
In addition, I request that you keep Richard J. Kiessel, of my staff, advised of your progress toward resolution of our concerns and as to the schedule for resubmission of the report.
In the interim, my staff will continue with their review of the individual utility bulletin responses. Where warranted, site specific comments will be addressed to the individual utilities through the appropriate NRC regional office.
Sincerely, OriginalUIE"
.Shelden A. schsatts Edward L. Jordan, Director Division of Emergency Preparedness and Engineering Response Office of Inspection and Enforcement
Enclosure:
Coments About the Westinghouse Owners' Group (WOG) Report of March 1986 on the Safety-Related MOV Program Distributio,n,:
See page 2 8702050111 870130 PDR TOPRP ENVWEST C
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R:IE R:IE RJKiessel:bt Ay
,erick RLBaer SAS'chwartz JJtJ6rdan 01/2(/87 01/q/87 01/p/87 01//> 87 01/q87
Mr. Joe George Distribution:
JMTaylor, IE RWStarostecki IE ELJordan, IE SASchwartz, IE RLBaer, IE AWDromerick, IE RJKiessel, IE JGPartlow, IE BKGrimes, IE JAAxelrad, IE EWMerschoff, IE SDEbneter, RI AFGibson, RII EHJohnson, RIV WFKane, RI DFKirsch, RV CENorelius, RIII CJPaperiello, RIII RDWalker, RII TMNovak, NRR FCCherny, NRR HABailey, IE HBClayton, NRR TKoshy, RI 00Rothberg, NRR SARichards, RV GASchnebli, RII TFWesterman, RIV PRWohld, RIII PDR 4D D051 DEPER R/F EGCB R/F P.JKiessel R/F
COMMENTS ABOUT THE WESTINGHOUSE OWNERS G REPORT OF MARCH 1986 ON THE SAFETY-RELATED a
4 INTRODUCTION Review of the Callaway the scope of these comme (nts.SNUPPS) FSAR and P& ids is included in mentioned on Page 13 of the WOG Report.These SNUPPS documents are included in the scope of thisReviews of the response and procedures are not review.
REFERENCE United States Nuclear Regulatory Commission, Office of Inspection and Enforcement,_ Motor-Operated Valve Common Mode Failures Durinjt_ Plant Transients Due r
Settinas, IE Bulletin No. 85-03, November 15, 1985 to Improper _ Switch COMMENT 1 Because of its possible effect i
water hammer should be addressed inon the determination.of differentials, Report.
to be designed to preventAlthough piping systems at Callaway (SNUPPS) are s the WOG water hanser, piping systems at other plants may be vulnerable.
COMMENT 2 Because it is a passive system when nitrogen pressure exceeds which is actuated automatically causes check valves reactor vessel pressure and included in the scope of the WOG Report.to open, the accumulator in not The possible problem thatsystem are normally open and are closed only for main closed inadvertently should be addressed.the system MOVs were left COMMENT 3 Referring to pages 19 and 20 note that HHSI pump is 1750 psig in Note 7 and 1500 psig in Notethe miniflow head of t 14 COMMENT 4 At the top of the third page of Appendix B, missing.
Valve 33 is
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