ML19262B908

Responds to NRC 791109 & 27 Requests for Confirmation Re Fuel Rod Strain Flow Blockage Models.Models Conservative & Are of Equivalent Level to NRC Model

ML19262B908
Person / Time
Site:	Pilgrim
Issue date:	01/04/1980
From:	Andognini G BOSTON EDISON CO.
To:	Eisenhut D Office of Nuclear Reactor Regulation
References
BECO-LTR-80-1, NUDOCS 8001160462
Download: ML19262B908 (1)

Text

BO STO N EOisON COMPANY GsNtaAL DrrectS B00 Gov 6STON sfREET BOSfDN. M ASSACMuSCTTS Os199 G. cAaL ANDOSNING SurgmINTENORNT NGCLEAR OPERATIONS DEPARTMENT January 4, 1980 BECo. Ltr. #80-1 Mr. Darrell G. Eisenhut, Acting Director Division of Operating Reactors U.S. Nuclear Regulatory Commission Washington, D. C. 20555 License No. DPR-35 Docket No. 50-293

Dear Sir:

This letter is in response to your letters of November 9,1979 and November 27, 1979, requesting confirmation that the fuel rod strain-flow blockage models used on Pilgrim Nuclear Power Station Unit #1 are conservative with respect to the NRC's model derived from ORNL Multi-Rod Burst Test Facility data. Since we do not have or use our own models in this area, the following discussion pertains to the use of General Electric Company approved models in association with the operation of Pilgrim Nuclear Power Station Unit #1.

Via both your letters of November 9th and 27th and our correspondence from GE, we are aware of the review effort GE has applied to this issue. We are also aware of the comunications between GE and the NRC on this subject.

Accordingly, we herein affirm that based on our correspondence from GE it is our understanding that over the operating range of interest pertinent to Pilgrim Nuclear Power Station Unit #1 the models applied by GE and approved by the NRC are of a conservative level equivalent to the NRC model.

Very truly yours,

/

M

s. #

Commonwealth of Massachusetts)

County of Suffolk )

Then personally appeared before me G. Carl Andognini, who, being duly sworn, did state that he is Nuclear Operations Superintendent of Boston Edison Ccmpany, the applicant herein, and that he is duly authorized ,to execute and file the submittal contained herein in the name and on behalf of Boston Edison Company and that the statements in said submittal are true to the best of his knowledge and belief.

1754 253 5 My Commission expires: / >

Notary Public lh{

8001160