ML19350A172
| ML19350A172 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 02/13/1978 |
| From: | Switzer D CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | Case E Office of Nuclear Reactor Regulation |
| References | |
| IEB-78-02, IEB-78-2, NUDOCS 8102180745 | |
| Download: ML19350A172 (2) | |
Text
kEGULAT0id I;ekEiFEEC ONNECTICUT YANKEE ATOMIC POWER COMPANY BERLIN. CO N N ECTIC U T P. o. sox 270 H ARTFORD. CONN ECTICUT 06101 203 66 6911 February 13, 1978 N
Docket No. 50-213
,.g ' J D Office of Nuclear Reactor Regulation FEByOI97gg &
U. S. Nuclear Regulatory Commission L-Washington, DC 20555
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ATTENTION: Mr. Edson G. Case, Director k
.jf[g Gentiemen:
References:
(1)
IE Bulletin No. 78-02, dated January 30, 1978, Terminal Block Qualification (2)
D. C. Switzer letter to A. Schwencer dated February 2, 1978 (3) Dc C. Switz.er letter to A. Schwencer dated February 10, 1978 Haddam Neck Plant Terminal Block Qualification In reference (1) the Connecticut Yankee Atomic Power Company (CYAPCo) was requested to determine whether or not unprotected terminal blocks are used in systems which must function in the post-accident environ-I ment.
It was also requested that if such terminal blocks are used, CYAPCo was to identify the systems involved and provide the documen-tation which demonstrates that these terminal blocks have been environmentally qualified.
CYAPCo has determined that unprotected terminal blocks of the type that failed the screening test were installed in systems which must function in the post-accident environment. These blocks were sub-sequently replaced with Westinghouse blocks which were tested simul-l taneously, and passed the screening test. These blocks thus are l
qualified for environmental conditions by test and analysis.
The required documentation pertaining to IE Bulletin 78-02 has been forwarded in references (2) and (3).
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Mr. Edson G. Case February 13, 1978 We trust that this infomation is responsive to NRC staff requests.
Very truly yours, CONNECTICUT YANKEE ATOMIC POWER COMPANY
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T D. C. Switzer President DCS: REB /kwc Attachment cc: Director of Reactor Operations Inspections U. S. Nuclear Regulatory Comission Washington, DC 20555 J
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