ML13331A359

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Informs That Util 900131 Response to NRC Bulletin 89-003, Potential Loss of Required Shutdown Margin During Refueling Operations, Acceptable
ML13331A359
Person / Time
Site: San Onofre  
Issue date: 02/22/1990
From: Tatum J
Office of Nuclear Reactor Regulation
To: Cotton G, Ray H
SAN DIEGO GAS & ELECTRIC CO., SOUTHERN CALIFORNIA EDISON CO.
References
IEB-89-003, IEB-89-3, TAC-75454, TAC-75455, TAC-75456, NUDOCS 9003020217
Download: ML13331A359 (4)


Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 February 22, 1990 Docket Nos.

50-206, 50-361 and 50-362 Mr. Harold B. Ray Mr. Gary D. Cotton Vice President Senior Vice President Southern California Edison Company Engineering and Operations Irvine Operations Center San Diego Gas & Electric Co.

23 Parker Street 101 Ash Street Irvine, California 92718 San Diego, California 92112 Gentlemen:

SUBJECT:

RESPONSE TO BULLETIN 89-03 (TAC NOS. 75454, 75455 AND 75456)

On November 21, 1989, the NRC staff issued Bulletin 89-03 "Potential Loss of Required Shutdown Margin During Refueling Operations." The bulletin requested that all PWR licensees and PWR construction permit holders take the actions described in the bulletin to ensure that an adequate shutdown margin is main tained during all refueling operations. To accomplish this, three actions were described:

1. Assure that any intermediate fuel assembly configuration (including control rods) intended to be used during refueling is identified and evaluated to maintain sufficient refueling boron concentration to result in a minimum shutdown margin of approximately 5%.
2. Assure that fuel loading procedures only allow those inter mediate fuel assembly configurations that do not violate the allowable shutdown margin and that these procedures are strictly adhered to.
3. Assure that the staff responsible for refueling operations is trained in the procedures recommended in Item 2 above and understand the potential consequences of violating these procedures. This training should include the fundamental aspects of criticality control with enriched fuel assemblies.

goo.-OO22

Messrs Ray and Cotton

- 2 By letter dated January 31, 1990, you responded to Bulletin 89-03 which indicated that the required actions (described above) have been established and fully implemented on Unit 2 and that these actions will be fully imple mented on Units 1 and 3 during the next refueling outage for these units.

Therefore, the staff considers your response to Bulletin 89-03 to be satis factory and TAC Nos. 75454, 75455 and 75456 to be closed.

Sincerely,

/

~

mes E. Tatum, Project Manager Project Directorate V Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation cc: See next page

Mr. Harold B. Ray San Onofre Nuclear Generating Southern California Edison Company Station, Units No. 1, 2, and 3 cc David R. Pigott Mr. Gary D. Cotton Orrick, Herrington & Sutcliffe Senior Vice President The Old Federal Reserve Bank Bldg.

Engineering and Operations 400 Sansome Street San Diego Gas & Electric Company San Francisco, California 94111 101 Ash Street, P.O. Box 1831 San Diego, California 92112 Mr. Robert G. Lacy Manager, Nuclear San Diego Gas & Electric Company Mr. Charles B. Brinkman P. 0. Box 1831 Combustion Engineering, Inc.

San Diego, California 92112 12300 Twinbrook Parkway, Suite 300 Rockville, Maryland 20852 Resident Inspector/San Onofre NPS U.S. NRC Alan R. Watts, Esq.

P. 0. Box 4329 Rourke & Woodruff San Clemente, California 92672 701 S. Parker St. No. 7000 Orange, California 92668-4702 Mayor City of San Clemente Mr. Sherwin Harris San Clemente, California 92672 Resource Project Manager Public Utilities Department Chairman City of Riverside Board of Supervisors 3900 Main Street County of San Diego Riverside California 92522 1600 Pacific Highway Room 335 San Diego, California 92101 Mr. Phil Johnson U.S. Nuclear Regulatory Commission Regional Administrator, Region V Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 1450 Maria Lane, Suite 210 Walnut Creek, California 94589 Walnut Creek, California 94596 Mr. F. B. Marsh, Project Manager Mr. John Hickman, Senior Health Bechtel Power Corporation Physicist P. 0. Box 60860 Environmental Radioactive Mgmt. Unit Terminal Annex Environmental Management Branch Los Angeles, California 90060 State Department of Health Services 714 P Street, Room 616 Charles R. Kocher, Esq.

Sacramento, California 95814 James A. Beoletto, Esq.

Southern California Edison Company Mr. Don Womeldorf Irvine Operations Center Chief Environmental Management 23 Parker California Department of Health Irvine, California 92718 714 P Street, Room 616 Sacramento, California 95814

Messrs Ray and Cotton February 22, 1990 By letter dated January 31, 1990, you responded to Bulletin 89-03 which indicated that the required actions (described above) have been established and fully implemented on Unit 2 and that these actions will be fully imple mented on Units 1 and 3 during the next refueling outage for these units.

Therefore, the staff considers your response to Bulletin 89-03 to be satis factory and TAC Nos. 75454, 75455 and 75456 to be closed.

Sincerely, original signed by James E. Tatum James E. Tatum, Project Manager Project Directorate V Division of Reactor Projects -

III, IV, V and Special Projects Office of Nuclear Reactor Regulation cc:

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