ML20207B839

Application for Amend to License NPF-43,revising Tech Specs for Alternative Shutdown Sys to Provide More Restrictive Action Statement in Event of Combustion Turbine Generator Inoperability,Per NRC 860619 & 0702 Concerns

ML20207B839
Person / Time
Site:	Fermi
Issue date:	07/15/1986
From:	Agosti F DETROIT EDISON CO.
To:	Adensam E Office of Nuclear Reactor Regulation
Shared Package
ML20207B841	List: ML20207B839 ML20207B852
References
VP-86-0091, VP-86-91, NUDOCS 8607180267
Download: ML20207B839 (3)

Text

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ce P es dent Nuclear Operations SsY Detroit 6400 North Osute Highway W

EdlSOn ' Newport.u.cnigan July 15, 1986 Nuclear

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VP-86-0091 Office of !!uclear Reactor Regulation

!!s . Elinor G. Adensan, Director Project Directorate No. 3 Division of DUR Licensing U. S. I?uclear Regulatory Connission Washingtcn, D.C. 20555

Reference:

1) Ferni 2 URC Docket I?o. 50-341 URC License No. UPF-43

2) Detroit Edison to NRC Letter, " Request for Anendnent to Technical Specifications for the Alternative Shutdoun Progran", RC-LG-85-0051, dated September 27, 1985

3) Detroit Edison to MRC Letter,

" Alternative Shutdown Systen",

VP-86-0005, dated January 30, 1986

Subject:

Revised Proposed Technical Specifications for the Alternative Shutdoun Systen Reference 2 requested an anendment to the Fermi 2 Technical Specifications to include additional specifications for the Alternative Shutdown Systen.

Reference 3 atended the request to include several additional switches and controls to the list contained in Reference 2.

Eased on discussions with the NRC staff,on~ June 19, 1986 and July 2, 1986 Detroit Edison is hereby amending the proposed specifications. The proposed Technical Specifications an anended are attached.

The principal changes involve a more restrictive action '

statenent in the event of the inoperability of the /

Conbustion Turbine Generator (CTG) Unit 1 power source, a nore frequent test of the standby feedwater systen, and an added discussion in the Bases on what constitutes an acceptable alternate source of power. These proposed changes are responsive to the concerns e:: pressed by the staff during the June 19 and July 2 discussions.

s 7180267 860715 ~

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p. ADOCK 05000341 I I

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Ms. Elinor G. Adensan July 15, 1986 VP-86-0091 Page 2 The proposed action statenent in the event of CTG Unit 1 being inoperable recognizes that CTG Units 2,3 and 4 are available to provide power to the Alternative Shutdoun Systen. In addition, it recognizes that the normal means of supplying power to the Alternative Shutdoun Systen is fron Division 1 Offsite Power. This offsite grid has proven to be extremely stable in the past and thus there is reasonable assurance that the Alternative Shutdown Systen would supply the necessary power even if CTG Unit 1 was inoperable.

The increased frequency of testing the Standby Feedwater(SBFU) systen is responsive to NRC staff connents and recognizes that only one of the two pumps is needed to provide sufficient capacity to achieve and maintain Hot Shutdown in the Appendix R fire scenario.

Thus, staggered testing of the SBFW pumps every 31 days increases the level of confidence that the SBPU systen vould perform its function if called upon while minimizing wear on either punp resulting from surveillance testing.

Since the acended Technical Specifications propose a shorter period of time allowed for CTG Unit 1 to be inoperable prior to providing an alternate source of pouer and since the frequency of testing the SBFW cystem is being increased, these proposed changes do not alter the conclusions of the Reference 2 letter regarding significant hazards considerations associated with this proposed license amendment.

The proposed Technical Specification section for the Alternative Shutdown Auxiliary systens has been numbered 3.7.9. This was done so that fire protection related specifications appear together in section 7. This will require the existing Technical Specification section 3.7.9 and its corresponding bases section to be renumbered as 3.7.10 when issued.

Should you have any questions in this natter, please contact Mr. A. E. Wegele at (313) 586-4210.

1 Sincerely, l

~+-f ,

Attachment cc: Mr. M. D. Lynch Mr. W. G. Rogers Supervisor, Advance Planning and Review Section Michigan Public Service Connission USNRC Document Control Desk Hashington, D.C. 20555

T Ms. E. G. Adensam July 15, 1986 VP-86-0091 Page 3 I, FRANK E. AGOSTI, do hereby affirm that the foregoing statements are based on facts and circumstances which are true and accurate to the best of my knowledge and belief.

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FRANK E. AGOSTI Vice President Uuclear Operations On this /8 day of ,d , 1986, before me personally appeared Fg6fik Pd Agosti, being first duly sworn and says that he executed the foregoing as his free act and deed.

l Notary _Pubtic Notary Puc. c, ..a., sa Ce#'f 'd My Commission E: giros C;c.23,1937

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