ML20248L292
| ML20248L292 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 03/23/1978 |
| From: | Nolan F, Sniezek J, Whitt K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| References | |
| PNO-78-059, PNO-78-59, NUDOCS 9806110071 | |
| Download: ML20248L292 (1) | |
Text
Y 0 k (A c h d yt d Dj / M 'I / W f p PRELIMINARY NOTIFlCAT10N g
March 23, 1978 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-78-59 This preliminary notification constitutes EARLY notice of an event of POSSIBLE safety or public interest significance.
The information presented is as initially received without verification or evaluation and is basically all that is known by IE staff on this date.
Facility:
Connecticut Yankee Atomic Power Company Haddam Neck Plant Haddam Neck, Connecticut (DN 50-213)
Subject:
FAILURE OF TERMINAL BLOCKS INSIDE OF PROTECTIVE BOXES DURING ENVIRONMENTAL-QUALIFICATION TESTING The licensee reported a failure of three different vendors' terminal blocks (GE, Kulka, and Westinghouse) during LOCA environmental testing at the Franklin Institute Research Laboratories.
One GE terminal block mounted inside a steel box performed satisfactory.
The licensee is planning a shutdown late on March 23 to replace the presently installed aluminum boxes that failed to qualify during the Franklin Institute tests with the steel. boxes that were qualified.
NRR is conducting a meeting with the licensee on this matter today.
g Media interest is expected because of past attention to electrical prob-
,f
')
lems at this site.
The State of Co' necticut has been informed.
A press n
(
release is being issued by the licensee.
t NRC, Pegion I, (Philadelphia) received notification of this occurrence by telephone from the Assistant Superintendent at 1:15 p.m., on March 23, 1978.
Contact:
KWWhitt, IE x28019 FNolan, IE x28019 JHSniezek, IE x28019
/
Distribution:
Transmitted H St [ N
[
Chairman Hendrie Commissioner Bradford Commissioner Kennedy S. J. Chilk, SECY C. C. Kammerer, CA Commissioner Gilinsky (For Distribution)
Transmitted: MNBB P Bldg (.ou p, E. Volgenau, IE L. V. Gossick, ED0 E. G. Case, NRR Region 1 f.':t Y S. H. Hanauer, EDO J. J. Fouchard, PA SS Bldg 7,'li (MAIL) j R. Hartf.jeld, MIPC C. V. Smith, NMSS T. J. McTiernan, 01A R. G. Ryan, OSP R. Minogue, SD l
H. K. Shapar, ELD PRELIMINARY NOTIFICATION I
9006110071 780323 PDR I&E PNO-I-78-59 PDR l
l l
.J t
a