ML20207L380
| ML20207L380 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 10/31/1986 |
| From: | Hunsader S COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 2351K, NUDOCS 8701120133 | |
| Download: ML20207L380 (2) | |
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\\ CORNRORWeeltli Edloon
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/ Address Reply to: Post Omco Box 767 k/ Chicago,IEnois 60690 0767 October 31, 1986 Mr. James G. Keppler Regional Administrator U.S.
Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL. 60137
Subject:
Byron Station Units 1 and 2 NRC Docket No. 50-454/50-455
Dear Mr. Keppler:
During the recent NRC inspection perforned by Mr. R. Love
(
Reference:
Inspection Report Nos. 50-454/86-31 & 50-455/86-17) an unresolved item was raised regarding the technical acceptability of the battery connection cables on the Diesel Driven Auxiliary Feedwater Pump.
These cables had been supplied by Stewart &
Stevenson Services, Inc. under S&L Specification F/L-2891, Diesel Drives for Safety-Related Pumps.
The following provides a discussion of the acceptability of those cables.
The cables which were provided for the connection of the battery to the diesel engine skid were manufactured by ITT Suprenant Division.
The cables were rated at 600V and manufactured in accordance with Military Specification W-5086.
Stewart & Stevenson provided Certificates of Conformance to the Mil. Spec. and these included data documenting the results of various tests required by Mil. Spec. W-5086.
The electrical requirements of the Military Specification are similar to those which are included in the S&L specification for 600V power and control cables.
We have reviewed each of the Certificates of Conformance submitted for the battery connection cable and have determined that the cable is electrically acceptable for its application on the Auxiliary Feedwater Diesel Driven Pump.
In addition to the requirements of Mil. Spec. W-5086, which demonstrate electrical integrity of the cable, the military specification also requires that the cable pass a flame test.
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- Although the flame test described in Mil. Spec. W-5086 differs from the procedure outlined in IEEE 383-1974, the cable demonstrated that it would not propagate the spread of flame and it would self extinguish upon removal of the flame source.
In addition, these cables are enclosed in conduit from the battery to the diesel engine skid.
Therefore it is acceptable for the cable to be installed in the Auxiliary Feedwater Diesel Driven Pump Cubicle.
The auxiliary feedwater diesel driven pump is located in a mild environment, (i.e.,
it will not be subjected to severe changes in the environment during normal or accident conditions.)
Therefore, per the requirements of 10CFR50.49 documentation of the environmental qualification of this cable is not required.
We, therefore, conclude that the ITT Suprenant 600V cable certified to be in conformance with Military Specification W-5086 is acceptable for use as the battery connection cable on the Auxiliary Feedwater Diesel Driven Pump at Byron.
If there are any questions, please contact this office.
Very truly yours, b
S.C. Hunsader Nuclear Licensing Administrator
/klj 2351K l
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