ML19246C357
| ML19246C357 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 07/13/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Short T OMAHA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 7907240401 | |
| Download: ML19246C357 (1) | |
Text
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UNITED STATES f*
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,o NUCLEAR REGULATORY COMMISSION N
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REClON IV 0 -
O 611 RYAN PLAZA DRIVE, SulTE 1000 b ' Y/
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July 13, 1979 Docket Mc.
50-285 Omaha Public Power District ATTN:
T. E. Short, As.istant General Manager 1623 Harney Street Omaha, Nebraska 68102 Gentlemen:
The enclosed IE Circular No. 79-13, is forwarded to you for information.
No written response is required.
Should you have any questions related to your understanding of this ratter, please contact this office.
Sincerely, II Kr. 1 V. Seyfri k
Director
Enclosures:
1.
IE Circular No. 79-13 2.
List of IE Circulars Issued in Last 12 Months cc:
R. L. Andrews, Manager Fort Calhou.. Station Pc t Office Box 98 Fort Calhoun, Nebraska 6810^
'f 426 007 790724 W I'a
UNITED STATES NUCLEAR REGULATORY C0f! MISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Circular 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-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 Pump identified a generic problem with Cummins Indus-trial Fire Pump Engines.
Discussion:
The investigation revealed that Cummins 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, NT-855-F2 series engines) to impreve operation of inline 6 cylinder Industrial Fire Pump Engines.
In this topic, Cummins recommenda'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 etion recommended by Cummins.
Recommended Actions for Licensees' Consideration:
All nolders of operating licenses or construction nerm.its should be aware of the potential problem of the t.ype discussed above.
B2cause of the generic implications in this matter, it is recommended that both licensees of operating facilities and holde es of construction permits conduct a. view to determine if the above diesel fire pump engines are in use or planned for use at your facility (ies).
If these engines are in use or planned for use, detet sine if the Cummins t3pe 118848 Magnetic Switch and 199573 DC relay contactors are also employed.
For those engines which have these components, develcp a pro-gram for their replacement with the new 217588 llagnetic Switch.
No written response to this Circular < ~d DUPLICATE DOCUMENT i
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information regarding these matters, NRC Regional Office.
Entire document previously entered into system under:
C rvice/ Parts Topics ANO79h7/
/M No. 74T 13-3A
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No. of pages:
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