ML19256B532
| ML19256B532 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 07/16/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Groce R YANKEE ATOMIC ELECTRIC CO. |
| References | |
| NUDOCS 7907310547 | |
| Download: ML19256B532 (1) | |
Text
Pw p >* **ouq(o
~
s UNITED STATES y,
y j 3.%
g NUCLEAR REGULATORY COMMISSION 3.g[\\ 4[b,..,f 631 PARK AVENUE C
REGION I 0,
%,, ' \\/
,o#
KING OF PRUSSIA, PENNSYt.VANIA 19406 Docket No. 50-29 JUL 1 6 1973 Yankee Atomic Electric Company ATTN:
Mr. Robert H. Groce Licensing Engineer 20 Turnpike Road Westborough, Massachusetts 01581 Gentlemen:
The enclosed IE Circular No. 79-13, is forwarded to you for information.
No wri'.'.3n response is required.
If you require additional information regarding this subject, please contact this office.
Sincerely,
/
f Boyce H. Grier Director
Enclosures:
1.
IE Circular No. 79-13 w/ attachments 2.
List of IE Circulars Issued in Last 12 Months cc w/encls:
H. Autio, Plant Superintendent L. E. Minnick, President 7007310 % 7
ENCLOSURE 1 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Circular No. 79-13 Date:
July 16, 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 DavisBesse, Unit 1 facility operated by Toledo Edison Ccmpany.
The cause for failure was defective starting contactors.
A st'osequent 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 Industrial Fire Pump Engines.
Discussion:
The investigation revealed that Cummins Engine Company issued a Service / Parts Topics No. 74i 133A announcing new components available for Industrial Fire Pumps (NH2201F, N855F, N855F1, NT855F2 series engines) to improve operation of inline 6 cylinder Industrial Fire Pump Engines.
In this tcpic, Cummins recom-mend: that when replacing the 118848 magnetic switch cnd 195573 DC relay contactor, use the new 217588 magnetic switch.
The new design component has a 6 ampere araw whereas the old combination has approximately 3 amperes draw.
Davis Besse and Dresden sites have implemented the corrective action recommended by Cummins.
Rec
- a. ended 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 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 rep Lcement with the new 217598 Magnetic Switch.
No written response to this Circular is required.
If you require additional information regarding these matters, contact the Director of the anpropriate NRC Regional Office.
DUPLICATE DOCUMENT CUMMINS Service / Parts Topics Entire document previously No. 74 T 133A entered into system under:
ANO No. of Pages:
h