ML19242A158
| ML19242A158 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Byron, Braidwood, Quad Cities, Zion, LaSalle  |
| Issue date: | 07/13/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Brian Lee COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 7907310403 | |
| Download: ML19242A158 (1) | |
Text
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UNITED STATES 7,
NUCLEAR REGULATORY COMMISSION PDR
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GLEN ELLYN, ILLINOls 60137 Jm.131979 Docket Nos. 50-10, 50-237, 50-249, 50-254, 50-265, 50-295, 50-304, 50-373, 50-374, 50-454, 50-455, 50-456 and 50-457 Commonwealth Edison Company ATTN:
Mr. Byron Lee, Jr.
Vice President Post Office Box 767 Chicago, IL 60690 Gentlemen:
The enclosed IE Circular No. 79-13, is forwarded to you for ir:for-mation. No written response is required.
Should you have any questions related to your understanding of this matt *r, plesse contact this office.
Sincerely, 0)gl _-24-grWb
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James G. Keppler, Director
Enclosure:
IE Circular No. 79-13 cc w/ encl:
Mr. B. B. Stephenson, Mr. R. Cosaro, Project Station Superintendent Superintendent Mr. N. Kalivianakis, Central Files Station Superintendent Director, NRR/DPM Mr. N. Wandke, Station Director, h19/ DOR Supe r:.ntendent PDR Mr. L.
J. Burke, Site Local PDR Project Superintendent NSIC Mr. T. E. Quaka, Quality TIC Assurance Supervisor Anthony Roisman, Esq.,
Mr. R. H. Holyoak, Station Attorney Superintendent Mr. Dean Hansell, Office Mr. Gunner Sorensen, Site of Assistant Attorney Project Superintendent General
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U.S. NUCLEAR REGULATORY COPJIISSION OFFICE OF INSPECTION AND ENFORCEMENT REGION III July 13, 1979 IE Circular No. 79-13 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 failu e was defective starting contactors. A subsequent investigation into the cause of a similar failure on January 18, 1978, at Comonwealth Edison Company's Dresden 2/3 Diesel Fire Pump identified a generic problem with Cumins 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 improve operation of ir*.f ne 6 cylinder Indestrial Fire Puz:rp Engines.
In this topic, Cummins recommends that when replacing the 118848 magnetic switch and 199573 DC relay contactur, use the new 217588 magnetic, witch.
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 recomended 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. Because of the generic implicatfors 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 pu=p engines are in use or planned for use at your f acility(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 enginea which have these components, develop a pro-gram for their replacement v*th 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 appropriate NRC Regional Office.
3._
U DUPLICATE DOCUMENT
Enclosures:
1.
Cummins Service / Parts Topics Entire document previously entered No.
74 T 13-13A.
into system under:
2.
List of IE Circulars Issued 1
in the Last Twelve Months.
AUO_ l ClO ~) \\ 9 M f5' IhO No. of pages:
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