ML13333B737

Trip Rept of 820603-04 Site Visit to Evaluate Emergency Procedures & Operator Training Re Pressurized Thermal Shock. Procedures Revised Based on Westinghouse Owners Group Guidelines on plan-specific Analyses

ML13333B737
Person / Time
Site:	San Onofre
Issue date:	07/12/1982
From:	Paulson W Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
REF-GTECI-A-49, REF-GTECI-RV, TASK-A-49, TASK-OR TAC-47549, NUDOCS 8207150230
Download: ML13333B737 (4)

Text

July 12, 1982 Docket No. 50-206 LICENSEE:

SOUTHERN CALIFORNIA EDISON COMPANY FACILITY:

San Onofre Nuclear Generating StatinnUnit No.

1

SUMMARY

OF JUNE 3 AND 4, 1982 SITE VISIT On June 3 and 4, 1982 members of the NRC staff and their consultants visited the San Onofre Unit No. 1 site. The purpose of the visit was to evaluate emergency procedures and operator training regarding Pres surized Thermal Shock (PTS). A list of attendees at the exit interview on June 4, 1982 is enclosed.

The results of the audit indicated that the operators-that were in terviewed had a good general understanding of PTS. Operator knowledge was somewhat weak regarding (1) past events at San Onofre Unit 1 and at other reactors, (2) concerns regarding the injection of cold.water without mixing, and (3) awareness of recent analyses that indicate that repressurization is not necessary for a PTS event to occur. The licen see agreed to modify the training plans to place more emphasis on past events and potential problems associated with injecting cold water into a stagnant line. The training plan has been updated regarding the re pressurization concern.

The emergency operating procedures for/ an Onofre Unit 1 have been re vised based on the Westinghouse Owners" Group guidelines. At the time of the audit, the procedures had not beq through the complete in plant review cycle; hence, the operators h T1ittle or no time to train on the new procedures. The revised procedures were based on plant specific analyses performed by Westinghouse. These revised procedures were gen erally found to be adequate with regard to PTS. The prodedures indicated that the core exit thermop couple temperatures would print out on the recorder with the thousands digit omitted. The NRC staff requested the.

licensee to investigate steps necessary to enable the computer printer %

to print the temperature without omitting the thousands digit. The complete findings and recommendations of this audit will be forwarded to the licensee in the near future.

Driginal Signed By W. Paulson, Project anager

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Enclosure:

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NRC FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD COPY USGPO: 1981-335-960 July 12, 1982 cc Charles R. Kocher, Assistant Mr. R. Dietch General Counsel Vice President James Beoletto, Esquire Nuclear Engineering and Operations Southern California Edison Company Southern California Edison Company Post Office Box 800 2244 Walnut Grove Avenue Rosemead, California 91770 Post Office Box 800 Rosemead, California 91770 David R. Pigott Orrick, Herrington & Sutcliffe 6600 Montgomery Street San Francisco, California 94111 Harry B. Stoehr San Diego Gas & Electric Company P. 0. Box 1831 San Diego, California 92112 Resident Inspector/San Onofre NPS c/o U. S. NRC P. 0. Box 4329 San Clemente, California 92672 Mission Viejo Branch Library 24851 Chrisanta Drive Mission Viejo, California 92676 Mayor City of San Clemente SSan Clemente, California 92672 Chairman Board of Supervisors County of San Diego San Diego, California 92101 California Department of Health ATTN:

Chief, Environmental Radiation Control Unit Radiological Health Section 714 P Street, Room 498 Sacramento, California 95814 U.. S. Environmental Protection Agency Region IX Office ATTN:

Regional Radiation Representative 215 Freemont Street San Francisco, California 94111 Robert H. Engelken, Regional Administrator Nuclear Regulatory Commission, Region V Office of Inspection and Enforcement 140 Maria Lane Walnut Creek, California 94596

EXIT INTERVIEW PRESSURIZED THERMAL SHOCK JUNE 4, 1982 MEETING ATTENDANCE NAME AFFILIATION R. ORNEALAS SCE M. J. KIRBY SCE J. M. CURRAN SCE SHELLY WEISS NRC/DHFS/OLB W. A. PAULSON NRC W. G. FLOURNOY SCE D. C. MINTON ASTA JOHN REEDER SCE H. E. MORGON SCE HARRY MATHIS SCE W. C. MARSH SCE BRENT CLAYTON NRC/DHFS/PTRB ROBERT GRUEL PNL SHANNON L. CROWELL PNL MIKE MORGENSTERN PNL W. C. MOODY SCE R. MORTRONS SCE J. M. FRANCIS SCE W. REINSCH SCE

Distribution Docket/Central File NRC PDR Local PDR ORB Reading W. Paulson OELD OI&E ACRS (10)

B. Clayton Shelly Weiss S. Vaiga R.

Clark D. Vassallo J. Stolz D. Crutchfield H. Smith 2