ML20153G494

Discusses Util 880423 Response to NRC 880419 Confirmatory Action Ltr Re Personnel Performance.Response & Action Taken Re Moisture Separator Reheater Damage Reviewed & Found Acceptable

ML20153G494
Person / Time
Site:	Fermi
Issue date:	05/04/1988
From:	Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:	Sylvia B DETROIT EDISON CO.
References
CAL-RIII-88-09, CAL-RIII-88-9, NUDOCS 8805110250
Download: ML20153G494 (2)

Text

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MAY 0 41968 Docket No.-50-341 CAL-RIII-88-009 l

Detroit Edison Company '

ATTN: B. Ralph Sylvia Group Vice President Nuclear Operations 6400 North Dixie Highway Newport, MI 48166

Dear Mr. Sylvia:

This refers to the NRC Confirmatory Action Letter dated April 19, 1988, and your written response dated April 23, 1988, providing an assessment of the effectiveness of Detroit Edison programs designed to improve personnel performance. We have reviewed your response, along with the actions you have taken regarding.the Moisture Separator Reheater damage, and found them to be acceptable. c We have reviewed the actions you have taken regarding the Residual lleat Removal \

(RHR) pump event and found them acceptable. We understand that testing of the electrical relay suspected of causing the inadvertent isolation of valve E11-F015B has not been successful in reproducing the failure. We understand that you will continue testing of the relay, complete a failure analysis of-the damaged relay, and develop corrective action to prevent recurrence based on the results of the subject testing and analysis. We further understand that pendim the determinatior and implementation of corrective action to prevent ' rence, and prior to your returning to the shutdown cooling mode of RHR, y. will revise your procedures to require frequent monitoring of shutdown cooling flow to ensure that the RHR system injection valves, when employed in the shutdown cooling mode of operation, do not inadvertently ,

isolate and go unnoticed for a period of time that could result in the loss of ,

shutdown cooling flow to the reactor vessel, the deadheading of the running i RHR pump, or tne pumpdown of the reactor vessel to the suppression pool .

through the miniflow line in the operating shutdown cooling loop.  !

As discussed in a telephone conversation between Mr. Orser of your staff and Dr. Paperiello cf "y staff on May 1,1950, we concur witii your decision to restart Fermi 2.

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Detroit Edison Company. 2 MAY 0 41988 Should-you have any questions, I will be glad to discuss them with you.

Sincerely.

Origin 21 rJ p od by

/A., Bert Devis s

A. Bert Davis r; Regional Administrator cc: Patricia Anthony, Licensing P. A. Marquardt, Corporate Legal Department DCD/DCB (RIDS)

Licensing Fee Management Branch Resident Inspector, RIII Ronald Callen, Michigan Public Service Commission

. Harry H. Voight, Esq.

Michigan Department of Public Health l

Monroe County Office of Civil Preparedness-J. Clifford, E00 W. Lanning, NRR F. Miraglia, NRR G. Holahan, NRR T. Quay, NRR J. Strasma, RIII J. Lieberman, OE L. Chandler, OGC 2

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