ML20094A907

Final Part 21 & Deficiency Rept Re Underrated Electrical Cable.Initially Reported on 840720.Bechtel Issued Design Change Notice 37 Against Drawing E-1408 Providing for Replacement of Underrated Cable

ML20094A907
Person / Time
Site:	Hope Creek
Issue date:	09/28/1984
From:	Martin T Public Service Enterprise Group
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
REF-PT21-84-518-000 PT21-84-518, PT21-84-518-000, NUDOCS 8411060600
Download: ML20094A907 (2)

Text

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i Thomas J. Martin Public Service Electric and Gas Company 80 Park Plaza Newark, N.J. 07101 201/4308316 Vice President -

Engineering ard Construction September 28, 1984 Dr. Thomas E. Murley, Adntinistrator U. S. Nuclear Regulatory Commission Of fice of Inspection and Enforcement if Region I 631 Park Avenue hr) .__

King of Prussia, Pennsylvania 19406

Dear Dr. Murley:

SIGNIFICANT CONSTRUCTION DEFICIENCY DESIGN DEFICIENCY-UNDERRATED CABLE --

IIOPE CREEK GENERATING STATION On July 20, 1984, a verbal report was made to Region I, Office of Inspection and Enforcement representative, Mr. E. C.

McCabe, advising of a potentially significant construction deficiency concerning underrated electrical cable. On August 20, 1984, an interim report was submitted to your o f fice . The following final report is provided in accordance _

with 10CFR50.55(e). __

Description of the Deficiency -

By letter dated March 19, 1984, our Architect / Engineer and Constructor, Bechtel, advised the Nuclear Regulatory Commission --

of a SNUPPS project design deficiency reportable under 10CFR21. -

The deficiency involves the specification of cable intended for '

use at conductor temperatures not exceeding 90 C for normal operation for the connection of Valcor solenoid valves, whereas --'

calculated terminal block temperatures would dictate the use of ' --

cable rated for 150 C service. Bechtel has determined that this design deficiency applies to fourteen (14) Valcor solenoid valve  :

connections in the Hope Creek Instrument Gas Compressor System.

Bechtel issued Nonconformance Report No. 4522 to document and control the deficient valve connections.

8411060600 840928 PDR ADOCK 05000354 g PDR d

0 .'

Dr. T. E. Murley 2 Corrective Action Bechtel has issued Design Change Notice (DCN) No. 37 against drawing E-1408 providing for the replacement of the underrated cable with cabic capable of withstanding the higher operating tempe ra ture s . Completion of this activity is scheduled for Decembe r 31, 1984.

Safety Analysis Ilad the condition gone undetected and uncorrected, there would exist the potential for functional loss of the Instrument Gas Compressor System which, under certain accident modes, would impair our ability to maintain differential pressure between Containment Isolation Valves for the Main Steam Sealing System.

Based upon the above analysis, we have de termined that safe operation / shutdown of the plant could have been adversely affected had the condition gone uncorrected. We there fo re consider this condition to be reportable in accordance with 10CFR5 0. 5 5 (e) .

Very truly yours,

[g C Office of Inspection and Enforcement Division of Reactor Construction Inspection Washington, D. C. 20555 NRC Resident Inspector - llope Creek P. O. Box 241 Ilancocks Bridge, NJ 08038 Records Center Institute of Nuclear Power Operations 1100 circle 75 Parkway, Suite 1500 Atlan ta , GA 30339

.