B11967, Advises That Requirements of IE Bulletin 85-002, Undervoltage Trip Attachments of Westinghouse DB-50 Type Reactor Trip Breakers, Inapplicable to Listed Facilities

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Advises That Requirements of IE Bulletin 85-002, Undervoltage Trip Attachments of Westinghouse DB-50 Type Reactor Trip Breakers, Inapplicable to Listed Facilities
ML20140E083
Person / Time
Site: Millstone, Haddam Neck, 05000000
Issue date: 01/24/1986
From: Opeka J
CONNECTICUT YANKEE ATOMIC POWER CO., NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To: Murley T
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
B11967, IEB-85-002, IEB-85-2, NUDOCS 8602030176
Download: ML20140E083 (2)


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P O. BOX 270 HARTFORD. CONNECTICUT 06141-0270 L t j []* [,* [ ', C (203) 66s-s000 January 24,1986 Docket Nos. 50-213 50-245 50-336 50-423 B11967 Dr. T. E. Murley, Regional Administrator Region i U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406 Gentlemen:

Haddam Neck Plant Millstone Nuclear Power Station, Unit Nos.1,2, and 3 Response to IE Bulletin No. 85-02 On November 5,1985(l) the NRC Office of Inspection and Enforcement issued IE Bulletin No. 35-02,"Undervoltage Trip Attachments of Westinghouse DB-50 Type Reactor Trip Breakers," to all power reactor licensees and applicants.

The bulletin listed required actions for licensees of currently operating Westinghouse PWR facilities that have not yet implemented the actuation of Reactor Trip Breaker (RTB) shunt trip coil on all automatic reactor trip signals.

The requirements of the bulletin are not applicable to Haddam Neck or to Millstone Unit Nos.1,2, and 3 as discussed below:

1.Had am Neck Plant - As desc ibed in the response to Generic Letter 83-28(2 , all automatic and manual trip signals operate both the undervoltage and shunt trip attachments for the two series-connected scram breakers.

2. Millstone 1 - Not applicable to BWRs.
3. Millstone 2 - Not applicable to C-E plants.

(1) J. M. Taylor letter to All Power Reactor Licensees and Applicants, "Undervoltage Trip Attachments of Westinghouse DB-50 Type Reactor Trip Breakers,"(IE Bulletin No. 85-02); dated November 5,1985.

(2) W. G. Counsit letter to D. G Eisenhut, " Response to Generic Letter 83-28,"

dated November 8,1983.

8602030176 060124 1 PDR ADOCK 05000213 (6 q o PDR lc

4. Millstone 3 - Design modifications for automatic reactor trip using shunt coil trin ) attachment have been reviewed and approved by the NRC staff.(3X4 i

Should you have any questions, please feel free to contact us.

Very truly yours, CONNECTICUT YANKEE ATOMIC POWER COMPANY NORTHEAST NUCLEAR ENERGY COMPANY J

J. F. Opdka k F &JL U i

i Senior Vice President i

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l (3) NRC Safety Evaluation Report Related to the Operation of Millstone

! Nuclear Power Station, Unit No. 3, dated July,1984 (NUREG-1031).

(4) NRC Safety Evaluation Report Related to the Operation of Millstone
Nuclear Power Station, Unit No. 3, Supplement No. 2, dated September, 1985.

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