ML19246C338
| ML19246C338 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 07/13/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Eric Turner HOUSTON LIGHTING & POWER CO. |
| References | |
| NUDOCS 7907240305 | |
| Download: ML19246C338 (1) | |
Text
_
lJ G mc
, '}p
'k
+
UNITED STATES G g)%.,,
(
q NUCLEAR REGULATORY COMMISSION
.f. C REGION IV C1 ' %
G11 RYAN PLAZA DRIVE. SUITE 1000 k
o' ARLINGTON, T E X AS 76012
'~
9...+
July 13, 1979 In Reply Refer To:
RIV Docket Nos. 50-498/IE Circular No. 79-13 50-499/IE Circular No. 79-13 llouston Lighting & Power Company ATTN:
Mr. E. A. Turner, Vice President Power Plant Construction and Technical Services Post Office Box 1700 Houston, Texas 77001 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 matter, please contact this office.
Sincerely, Ak?r,$a.o /&
Karl V. Seyfrit Director
Enclosures:
1.
IE Circular No. 79-13 2.
List of IE Circulars Issued in Last 12 Months 360 3\\'7 n.-
7907240360 3
UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASflINGTON, D.C.
20555 IE Circular No. 79 23 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 remctely at Davis-Besse, Unit 1 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 Cumrains Indus-trial Fire Pump Engines.
Discussion:
The investig4 tion revealed that Cummins Engine Company issued a Service / Parts Topics No. 74T 13-3A announcing new components available for Industrial Fire Pumps (Nil-220-1F, N-855-F, N-855-F1, NT-855-F2 series engines) to improve operation 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.
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 c.orrective action recommended by Cummins.
Recommended Actions for Licensees' Consideration:
All holders of operating licenses or construction perm'its stould oe aware of the potential problem of the type discussed abov=.
Because of tue generic implications in this matter, it is recommended that both licensees of operating facilities and holders of ( nstruction penaits conduct a review to determine if the above diesel fire pump engines are in use or planned for use at your faci lity(ies).
If th.:se 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.
- - ~ ~
h.o written response to this Circular.._.. _,,
e -- _y - sv
=-
information regarding these matters,, DUPLICATE DOCUMENT Li NRC Regional Office.
j i
<s Entire document previously entered
[1
.into system under-
Enclosure:
a b2/ b Cummins Service / Parts Topics ANO Na. 74T 13-3A an No. of pages:
a
,,n q
u_.
___ w w w
-