ML20005G248

Forwards Request for Addl Info Re Proposed Tech Specs for Insp Overhaul of Emergency Diesel Generators.Info Needed within 35 Days of Ltr Issuance Date

ML20005G248
Person / Time
Site:	Calvert Cliffs
Issue date:	01/11/1990
From:	Mcneil S Office of Nuclear Reactor Regulation
To:	Creel G BALTIMORE GAS & ELECTRIC CO.
References
TAC-71590, TAC-71591, NUDOCS 9001180331
Download: ML20005G248 (3)

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(Docket No's'.:50-317 M_lPDRs~

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Mr. G. C. Creel _ _

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.Vice-President.. Nuclear Energy?

SMcNeil' Baltimore Gas and. Electric Company OGC 1

LCalvert Cliffs Nuclear _ Power Plant:

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Dear M'.ECreel:

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SUBJECT:

REQUEST FOR ADDITIONAL ~INFORMATION - TECHNICAL-SPECIFICATIDNS FOR -

INSPECTION /0VERHAUL OF THE EMERGENCY DIESEL GENERATORS t

(UNIT 1 TAC'71590; UNIT 2 TAC.71591)'

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.f The NRC staff = has completed its review of your. December 14~,'1988 Technica1L _.

4 Specification;(TS) amendment request, as supplemented on December 18, 1989', to extend the surveillance dieselfgenerators (EDGs) period for inspection'and overhaul ofLthe emergency provided in TS 4.8.1~.1.2d.1 from'18. months (with a l4;5 month grace, period) to the newirefueling interval of 24 months (plus;a 6 monthgraceperiod).:Wehavedeterminedthatadditionalinformationisneeded

'to_ adequately support your request.

4 Please provide the information requested in the enclosed request for additional-information.within 35' days of-this letter's issuance date.

JThis1 request forfinformation-affects--fewer than 10 respondents; therefore, OMB clearance isinot required.under Public Law-96-511.

Sincerely,

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j Scott Alexander McNeil, Project Manarer Project Directorate I-1

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Division of Reactor Projects. I/II Office of Nuclear Reactor Regulation

Enclosure:

.As stated

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E Mr. William T. Bowen, President Pr. Joseph H. Walter h

Calvert: County Board of Engineering Division Comissioners -

Public Service Commission of Maryland Prince Frederick, Maryland. 20678 American Building 231 E. Baltimore Street Baltimore, Maryland 21202-3486 D.-A. Brune, Esq.

General Counsel Baltimore Gas and Electric Company Ms. Kirsten A. Burger, Esq.

P. 0.. Box 147f Maryland People's Counsel Baltimore, Maryland T1203_

American Building, 9th Floor 231'E. Baltimore Street Mr. Jay E. Silberg, Esq.

Baltimore, Maryland 21202 Shaw, Pittman, Potts and Trowbridge 2300 N Street, NW-Ms. Patricia Birnie Washington, DC ?0037 Co-Director Maryland Sefe Energy Coalition Mr. W. J. Lippold, General Supervisor

p. O. Box 90?

Technical Services Engineering Columbia, Maryland ?1044 Calvert Cliffs Nuclear Power Plant MD Rts 2 3 d,-P. O. Box 1535

. Lusby, Maryland 20657 Resident Inspector c/o-U.S. Nuclear Regulatory Commissicn P. 0. Box 437 Lusby, Maryland' 20657 Mr.-Thomas Magette Administrator - Nuclear Evaluations

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_ Department of Natural Resources 580 Taylor Avenue Tawes State Office Building PPER 83 Annapolis, Maryland 21401 i'

Regional Administrator, Region I

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U.S. Nuclear Regulatory Commission 475 Allendale Road King of prussia, Pennsylvania 19406 I

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. NUCLEAR REGULATORY COMMISSION 1

WASHINGTON, D. C, 70556 g %_. m.1.g REQUEST FOR' ADDITIONAL INFORMATION E

BALTIMORE GAS AND ELECTRIC COMPANY CALVERT CLIFFS NUCLEAR POWER PLANT. UNITS 1 AND 2-DOCKET NOS. 50-317 AND 50-318

' PROPOSED EMERGENCY DIESEL GENERATOR _ INSPECTION i

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.AND OVERHAUL SURVEILLANCE INTERVAL EXTENSION In.your December 14,1988 application your stated, "The results from these inspections [TS 4.8.1.1.2d.1 inspections]

indicate that extending-the interval between inspections should be 1

acceptable if additional preventive maintenance surveillances are implemented. The EDG manufacturer concurs with this and endorses our plan to schedule the inspection of the diesels during the. refueling outages as long as certain conditions are met. The manufacturer recommends F

1.

Conducting a main and connecting rod rod bearing inspection once i

every 12 months; and.

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2.

Performing an annual hydrostatic test of the jacket water and intercooler system."

Subsequently, your December 18, 1989 response to our request for additional information stated that the aforementioned preventive maintenance

-surveillanceswerep(CCI)-211.ermitted a grace period of 25% (3 months) under Calvert Cliffs Instruction.

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'In light of your.above statements, please respond to the following concerns q

regarding the cited EDG manufacturer's recommendations:

1.

Did the manufacturer include a 3 month grace period in the annual surveillance intervals recommended for the EDGs preventive maintenance inspections or did the manufacturer's recommendation rely upon a i

maximum allowable surveillance interval of 12 months and not 15 months?

2.

Was the EDG manufacturer's concurrence with your plan for performing inspections of the EDGs during refueling outages based upon a maximum EDG inspection surveillance interval of 24 months or a maximum interval of 30 months (24 months with a 6 month grace period?)

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