ML19260E265
| ML19260E265 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 01/30/1980 |
| From: | Hines E DETROIT EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-79-28, NUDOCS 8002140437 | |
| Download: ML19260E265 (2) | |
Text
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~n C Edward Hiner sw t. r a ;
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,r1 c m- ~m._ m Detro.t i
m mo Edison aw_mm January 30, 1980 EF2-47,355 Mr. James G. Keppler Regional Director U.S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137
Reference:
o Enrico Fe rmi Power Plant, Unit 2 o USNRC Licensing Docket:
50-341 o USNRC IE Bulletin 79-28 (12-7 '79) o Edison Memorandum EF2-47811 (1-25 '80)
W. F. Colbert to R. W. Barr
Subject:
Detroit Edison Response to NRC IE Bulletin 79-28
Dear Mr. Keppler:
The enclosed Edison internal memorandum, EF2-47811 of January 25, 1980, is herein transmitted to you in response to IE Bulletin 79-28.
Should you require additional information from Edison in this matter, please advise us.
Very truly yours, U:%M u t.d-,
EtI/JDR/Im Enclosure cc:
Mr. John G. Davis Acting Director Office of Inspection and Enforcement Division of Reactor Inspection Programs U.S. Nuclear Regulatory Commission Washington D.C.
20555 Director Office of Nuclear Reactor Regulation Division of Operating Reactors U.S. Nuclear Regulatory Commission Washington D.C.
20555
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8002140 LL
Detroit Edison._
ENRICO FERMI UNIT 2 PROJECT ENGINEERING January 25, 1980 EF2 - 47811 RICElVED To:
R. W. Barr JAN. 8leou Project Quality Assurance Director 206 Engineering Construction-Troy R. VV. B ARR From:
W. F. Colbert Md/%
Project Engineer - EF2 318 Engineering Construction-Troy
References:
1.
IE Bulletin 79-28, dated December 7, 1979 2.
EF2-47444, dated December 12, 1979
Subject:
Response to NRC IE Bulletin 79-28 This bulletin describes elevated temperature effects which were found to degrade the performance of a specific group of NAMCO Model EA-180 valve stem mounted limit switches.
Design Engineering has determined tha the referenced Model NAMCO switch has not been specified, pur-chased, or installed on any present designs.
Existing valve monitoring circuits employ the NAMCO Model EA-740 limit switch which is a more versatile can operated model as compared to the latch operated EA-180.
Consideration of future procurements is not warranted since our current and potential valve suppliers have by design based their valve position indicating feature on the use of cam operated switches.
Written by:
L. F. Wooden
/dk cc:
E. Lusis G. Sharma J. W. Nunley J. W. Wanless Document Control (Remove Action Item EF2-l.+44)
.