ML20006B413

Responds to NRC Bulletin 89-003, Potential Loss of Required Shutdown Margin During Refueling Operations. Plant Refueling Procedures Scheduled to Be Prepared During First Operating Cycle of Unit

ML20006B413
Person / Time
Site:	Seabrook
Issue date:	01/23/1990
From:	Feigenbaum T PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-89-003, IEB-89-3, NYN-90019, NUDOCS 9002020112
Download: ML20006B413 (2)

Text

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T M,w Homoshire I

Ted C. F ' ' -

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Senior Vice President and 5

Chief Operating C6cer NYN-90019 I

January 23, 1990 i

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i United States. Nuclear Regulatory Commission Washington, DC 20555 j

6 Attention:

Document Control Desk

References:

(a) Facility Operating License No. NPF-67. Docket No. 50-443 (b) NRC Bulletin No. 89-03, dated November 21, 1989, f

' Potential Loss of Required Shutdown Margin during f

Refueling Operations.'

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Subject:

Response to NRC Bulletin 89-03 Gentlemen NRC Bulletin 89-03 requests that licensees take appropriate actions to ensure that adequate shutdown margin is maintained during refueling i

operations.

This letter provides information regarding the actions New Hampshire Yankee (NHY) planc to implement at Seabrook Station Unit 1 in response to the requests of the Bulletin.

Seabrook Station refueling procedures are scheduled to be prepared during the first operating cycle of Seabrook Station Unit 1.

In preparing these refueling procedures NHY will evaluate various refueling methods includin8 full core off-load. The method to be implemented by refueling procedures will be selected considering the results of the above evaluation.

and. fuel supplier recommendations, The administrative requirements contained in refueling procedures will be similar to those of procedures used for initial core load.

New Hampshire Yankee has received from Westinghouse Electric Corporation core loading guidelines applicable to a full core off-load at Seabrook Station. These guidelines define permissible intermediate fuel assembly configurations and specify other requirements to ensure that adequate shutdown margin is maintained during refueling. These guidelines are consistent with current. Technical Specifications requirements applicable to refueling operations, such as the requirement to maintain a minimum L

refueling boron concentration.

Seabrook Station refueling procedures will l:

limit intermediate fuel assembly configurations to those that are permitted by_the Westinghouse core loading guidelines or those that are specifically evaluated to maintain the refueling shutdown margin defined by Technical Specifications.

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PDC U f.

New Hampshire Yonkee Division of Public Service Company of New Hampshire P.O. Box 300

• Seabrook, NH 03874

• Telephone (603) 474 9521 i;

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' United States Nuclear Regulattry Commission J:nuary 23, 1990 au Attention: Document Control Desk Page 2 Personnel responsible for refueling the Seabrook Station Unit I reactor L

will be trained in the approved Seabrook Station refueling procedures.

This training will review the fundamental aspects of refueling sub-critically control, emphasize the impact on core reactivity of any planned intermediate fuel assembly configurations, and reinforce the need for procedure adherence.

This training will be completed prior to commencement of the

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first core refueling at Seabrook Station.

I' If you have any questions on this matter, please contact Mr Geoffrey Kingston at (603) 474-9521, extension 3371.

Sincerely yours, f

Ted C. Feigenbaum cc Mr. Villiam T. Russell Regional Administrator United States Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406 Mr. Victor Nerses, Project Manager Project Directorate I-3 United States Nuclear Regulatory Commission Division of Reactor Projects Washington, DC 20555 Mr. Noel Dudley NRC Senior Resident Inspector P.O. Box 1149 Seabrook, NH 03874 STATE OF NEW HAMPSHIRE Rockingham, ss.

January 23, 1990 Then personally appeared before me, the above-named Ted C. Feigenbaum, being duly sworn, did state that he is Senior Vice President & Chief Operating Officer of the New Hampshire Yankee Division of Public Service Company of New Hampshire, that he is duly authorized to execute and file the foregoing information in the name and on the behalf of New Hampshire Yankee Division of the Public Service Company and that the statements therein are true to the best of'his knowledge and belief.

i Ws E %Qow-BeverlyE)Silloway,NqtkryPublic My Commission Expires: March 6, 1990 1

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