ML19246C343
| ML19246C343 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 07/13/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Pilant J NEBRASKA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 7907240316 | |
| Download: ML19246C343 (1) | |
Text
CENTRAL FILES PDR:HQ a a'%,)
se UNITED STATES R
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e NUCLEAR REGULATORY COMMISSION 5., kr$(f[f
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July 13, 1979 Docket Na.
50-298 Nebraska Public Power District ATTN:
J. M. Pilant, Director Licensing & Quality Assurance Post Office Box 499 Columbus, Nebraska 68601 Gentlemen:
The enclosed IE Circular No. 79-13, is forwarded to you for information.
No written response is required. Should you have any quest'ons related to your understanding of this matter, please contact this of fice.
Sincerely,
>/
'Karl V. Seyf rit[/ )
Director
Enclosures:
1.
IE Circular No. 79-13 2.
List of IE Circulars Issued in Last 12 Months cc:
L. C. Lessor, Superintendent Cooper Nuclear Station Post Office Box 98 Brownville, Nebraska 68321 e
79072403(6 r
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UNITED STATES K CLEAR REGULATORY COMMISSION OFFICE 0'.' INSPECTION AND ENFL,RCEMENT WASilINGTON, D.C.
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IC Ci rcular No. 79-13 Date:
July 13, 1979 Page 1 of 1 REPLACEMENT OF DIESEL FIRE PUMP STARTING CONTACTORS Description of Circumstances:
On May 28, 1978, the Diesel Fire Pump failed to start remotely at Davis-Desse, Unit I facility operated by Toledo Edison Company.
Th' cause for fcilure was defective starting contactors.
- f. subsequent investigation into the cause of a similar failure on January 18, 1978, at Commonwealt h Edison Company's Dresden 2/3 Diesel Fire Pump identified a generic problem with Cummins Indus-trial Fi re Pump Engines.
Discussion:
The investigation revoled that Cummins Engine Company issued a Service /Firts Topics No. 74T 13-3A anaouncing new components available for Industrial Fire Pumps (NH-220-1F, N-855-F, N-855-F1, NT-855-F2 series engines) to improve operat. ion of inline 6 cylinder Industrial Fire Pump Engines.
In this topic, Cummins recommends that when replacing the 118848 magnetic switch and 199573 DC relay contactor, use the new 217588 magnetic switch.
1 new desiga component has a 6 ampere draw, whereas the old combination has approximately 3 amperes draw.
Davis Besse and Dresden sites have implemented the corrective action recommended by Cummins.
Recommended Actions for Licensees' Consideration:
All holders of operating licenses or construction permits should be aware of the potential problem of the type discussed above.
Because of the generic implications in this matter, it is recommended that both licensees of operating facilities and holders of construction permits conduct a review to determine if the above diesel fire pump enginen are in use or planned for use at yeur facility (ies).
If these engines are in use or planned for use, determine if the Cummins type 118843 Magnetic Switch and 199573 DC relay contactors are also employed.
For those engines which have these components, develol, a pre-gram for their replacement with the new 217588 Magnetic Nitd.
No writ. ten response to this Circular is required.
If you re.onir' aJI~ 7 Z' i "Z-M l~
information regarding these matte p,
m NRC Regional Office.
DUPLICATE DOCUMENT
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Entire document previously entered W
into syetem under:
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Enclosure:
Cummins Service / Parts. Topics ANO 7 9 b 7[ 9 b A2
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