ML19242A165
| ML19242A165 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 07/13/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Bryan J UNION ELECTRIC CO. |
| References | |
| NUDOCS 7907310418 | |
| Download: ML19242A165 (1) | |
Text
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e" G LE N E LLY N, ILLINOIS 60137 Jul.131970 Docket No. 50-483 Docket No. 50-486 Union Electric Company ATTN:
Mr. John K. Bryan Vice President - Nuclear P. O. Box 149 St. Louis, MO 63166 Gentlemen:
The enclosed IE Circular No. 79-13, is forwarded to you for infor-mation. No written response is required.
Should you have any questions related to your understanding of this matter, please contact this office.
Sincerely, f
pm A' JamesG.Keppler[<
Director
Enclosure:
I2 Circular No. 79-13 cc w/ encl:
Mr. W. H. Weber, Manager, Nuclear Construction Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR NSIC TIC Region I & IV Ms. K. Drey Hon. C. J. Trass, Chairman Missouri Pubil: Service Commission r
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U.S. NUCLEAR REGl1LATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT REGION III July 13, 1979 IE Circular No. 79-13 REPLACEMDIT OF DIESEL FIRE PUMP STARTING CONTACTORS
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Description of Circumstances:
On May 28, 1978, the Diesel Fire Pu=p failed to start remotely at Davis-Besse, Unit I facility operated by Toledo Edison Company. The cause for failure was defective starting contactors. A subsequent investigation into the cause of a similar failure on January 18, 1978, at Commonwealth Edison Company's Dresden 2/3 Diesel Fire Pu=p identified a generic problem with Cu= ins Indus-trial Fire Pu=p Engines.
Discussion:
The investigation revealed that Cu= ins Engine Company issued a Service / Parts Topics No. 74T 13-3A announcing new components available for Industrial Fire Pumps (NH-220-1F, N-855-F, N-855-F1, h7-855-F2 series engines) to improve operation of inline 6 cylinder Industrial Fire Pump Engfnes.
In this topic, Cu=mina recommends that when replacing the 118848 magnetic switch and 199573 DC relay contactor, use the new 217588 magnetic switch. The new design 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 Cu= ins.
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. Eecause of the generic implications in this matter, it is reco= mended that both licensees of operating facilities and holders of construction permits conduct a review to determine if the above diesel fire pu=p engines are in use or planned for use at your facility (ies).
If these engines are in use or planned for use, determine if the Cummins type 118848 Magnetic Switch and 199573 DC relay contactors are also employed. For those engines which have these components, develop a pro-gram for their replacement with the new 217588 Magnetic Switch.
No written response to this Circular is required.
If you require additional information regarding these matters, contact the Director of the appropria:e ND.C Regional Office.
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.nclosures:
k DUPLICATE DOCUMENT 1.
Cummins Service / Parts Topics N
No.
74 T 13-13A.
Entire document previously entered 2.
List of IE Circulars Issued
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