ML20080A120
| ML20080A120 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 01/18/1984 |
| From: | Martin T Public Service Enterprise Group |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 8402030387 | |
| Download: ML20080A120 (2) | |
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Pubhc Service Electric and Gas Company Thomas J. Martin 80 Par k Plaza, Newark, NJ 07101 201-430 8316 Mailing Address: P.O. Box 570, Newark, NJ 'E 101 Vica Presidmt Engineering and Construction January 18, 1984 br. Thomas E. Murley, Administrator U.S. Nuclear Regulatory Commission Of fice of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19406
Dear Dr. Murley:
POTENTIAL CONSTRUCTION DEFICIENCY GE TYPE AKR-30 CIRCUIT BREAKERS HOPE CREEK GENERATING STATION On December 23, 1983, a verbal report was made to Region I, Office of Inspection and Enforcement representative, Mr. W.
Cook, advisirig of a potentially significant construction deficiency concerning the f ailure of several General Elec-tric AKR-30 circuit breakers to operate properly.
The fol-lowing interim report is provided in accordance with 10CFR5 0.5 5 ( e).
During Startup testing, five (5) AKR-30 circuit breakers,
destined for use in non-safety related systems, failed to operate due to inadequate mechanical loading of the closing spring.
Normally, this closing spring is loaded or
" charged" by a motor driven ratchet device.
One suspect breaker, S/N N2922400009, was returned to General Electric's Farmington, Connecticut facility for disassembly and analy-sis.
The results, however, were inconclusive for establish-ing the cause of the problem and a second circuit breaker, S/N N29224000ll, has been shipped to General Electric.
Testing and analysis of this breaker is scheduled to com-mence on January 18, 1984.
Although these five breakers were destined for use in non-safety related systems, they are identical to and inter-changeable with breakers that will be installed in safety related circuits.
All AKR-30 breakers were procured under the Hope Creek OA program for safety-related materials.
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8402030387 840118 PDR ADOCK 05000272 i
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Dr.-Thomas E. Murley 1/18/84 An' additional interim report will be provided by March 21, 1904, if the final report is not available prior to that date.-
Very truly yours, s'
CC:
Of fice of Inspection and Enforcement Division of Reactor Construction Inspection Washington, D.C.
NRC Resident Inspector - Hope Creek P.O.
Box 241 Hancocks Bridge, New Jersey 08038 Records Center
. Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339 i
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