ML20245K738

Forwards Safety Evaluation Accepting Util Response to Generic Ltr 83-28,Item 4.5.3, Reactor Trip Reliability - On-Line Functional Testing of Reactor Trip Sys

ML20245K738
Person / Time
Site:	Millstone
Issue date:	06/21/1989
From:	Vissing G Office of Nuclear Reactor Regulation
To:	Mroczka E NORTHEAST NUCLEAR ENERGY CO.
Shared Package
ML20245K741	List: ML20245K738 ML20245K749
References
GL-83-28, TAC-54000, NUDOCS 8907050239
Download: ML20245K738 (2)

Text

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',' June 21, 1989 I Docket No. 50-336 DISTRIBUTION "Doctetme EJordan Mr. E. J. Mroczka, Senior Vice President NRC & Ldcal PDRs BGrimes I Nuclear Engineering and Operations Plant File ACRS(10 .

I Northeast Nuclear Engineering Company SVarga 3 M rs. k) i P.O. Box 270 BBoger j Hartford, Connecticut 06141-0270 SNorris )

Dear Mr. Mroczka:

W f: C-rHs59 0GC i

SUBJECT:

SAFETY EVALUATION FOR GENERIC LETTER 83-28, ITEM 4.5.3, REACTOR j TRIP RELIABILITY - ON-LINE FUNCTIONAL TESTING 0F THE REACTOR i TRIP SYSTEM (TAC NO. 54000)

Generic-Letter 83-28. Item 4.5.3, required confirmation from all licensees and I applicants that on-line functional testing of the reactor trip system, l including independent testing of the diverse trip feature, was being performed. l By letter (s) dated November 21, 1985 you submitted responses to Generic Letter 83-28, Item 4.5.3. Therein you indicated your endorsement of the Combustion l Engineering Owners Group Report CE NPSD-277, as being applicable to Millstone, Unit No. 2. The NRC staff, with the assistance of our contractor, Idaho National Engineering Laboratory, has reviewed your response and the Combustion Engineering Owners Group Report. We conclude that the existing i intervals for on-line functional testing at Millstone, Unit No. 2 are consistent with achieving high reactor trip system availability.

The enclosed safety evaluation and contractor's report (EGG-NTA 8341) provide the details and basis for our conclusion. Therefore, we consider Generic 1 Letter 83-28, Item 4.5.3 to be complete.

This completes all staff activities related to TAC No. 54000.

Sincerely,

/s/

Guy Vissing, Project Manager ,

Project Directorate I-4 I Division of Reactor Projects I/II Office of Nuclear Reactor Regulation

Enclosures:

As stated BFoi cc w/ enclosures: I t See next page I

[ GENERIC LETTER 50-331.]

LA PDI j PM -4 S rs :cb PD:diz JSt 6421/89 6/f//89 6/y/89 8907050239 890621 PDR ADOCK 05000336 4 P PDC

e Pr. Edward J. Mroczka Millstone Nuclear Power Station Northeast Nuclear Energy Company Unit No. 2 CC:

Cerald Garfield, Esquire R. M. Kacich, Manager Day, Berry and Howard Generation Facilities Licensing Counselors at Law Northeast Utilities Service Company City Place Post Office Box 270 Hartford, Connecticut 06103-3499 Hartford, Connecticut 06141-0270 W. D. Romberg, Vice President D. O. Nordquist Nuclear Operations .

Manager of Quality Assurance Northeast Utilities Service Company Northeast Nuclear Energy Company Post Office Box 270 Post Office Box 270 Hartford, Connecticut 06141-0270 Hartford, Connecticut 06141-0270 Kevin McCarthy, Director Regional Administrator Radiation Control Unit Region I Department- of Environmental Protection U. S. Nuclear Regulatory Commission State Office Building 475 Allendale Road Hartford, Connecticut 06106 King of Prussia, Pennsylvania 19406 Bradford S. Chase, Under Secretary First Selectmen Energy Division Town of Waterford Office of Policy and Manage 9ent Hall of Records 80 Washington Street 200 Boston Post Road Hartford, Connecticut 06106 Waterford, Connecticut 06385 S. E. Scace, Station Superintendent W. J. Raymond, Resident Inspector -

Millstone Nuclear Power Station Millstone Nuclear Power Station Northeast Nuclear Energy Company c/o U. S. Nuclear Regulatory Commission Post Office Box 128 Post Office Box 811 Waterford, Connecticut 06385 Niantic, Connecticut 06357 J. S. Keenan, Unit Superintendent Charles Brinkman, Manager l Millstone Unit No. 2 Washington Nuclear Operations Northeast Nuclear Energy Company C-E Power Systems Post Office Box 128 Combustion Engineering, Inc.

Waterford. Connecticut 06385 12300 Twinbrook Pkwy Suite 330  :

Rockville, Maryland 20852

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