ML19210B632
| ML19210B632 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/24/1973 |
| From: | John Miller Metropolitan Edison Co |
| To: | Deyoung R US Atomic Energy Commission (AEC) |
| References | |
| IEB-73-01, IEB-73-1, NUDOCS 7911110106 | |
| Download: ML19210B632 (2) | |
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SU3 JECT:
T'-IREE MILE ISLA'ID NUCLEAR STATION UNITS 1 AND 2 s f'
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DOCKET NOS. 50-289 AND 50-320
Dear Mr. DeYcung:
Your letter of September 2h,1973 indicated that cur response to Directorate of Regulatory Operations Bulletin No. 73-1 entitled " Faulty Overcurrent Trip Delay Device in Circuit Breakers for Engineered Ssfety Syste=" was not acce=ptable.
Please be advised that all of the time delay dashpot end caps contained en engineered safeguard circuit breakers vill be replaced.
The replacement end caps vill be factory tested to the requirements of A'ISI C37.17, " Trip Device for AC and DC Lov Voltage Power Circuit 3reakers".
The new end caps vill be installed prior to initiel fuel loading.
Concerning the possibility of the subject problem occurring en
'"hree Mile Island Unit 2, we offer the following:
TMZ Unit No. 2 --- GE circuit breakers will be used.
Very truly yours,
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J. G. Miller Vice President kg CC:
Mr. W. A. Verrechi 1503 102
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AEC TRIBUTION FOR PART 50 DOCKET v (TEMFORARY F0FJt)
CONTROL NC:7911 FILE:
FROM:
DATE OF DOC DATE REC'D LTR MEMO RPT OTHER Metropolitan Edison Cocipany Reading, Pa. 19603 10-24-73 10-30-73 X
J. G. Miller TO:
R. C. DeYoung 1 signed SENT LOCAL PDR X CLASS UNCLASS PROP INFO INPUT NO CIS REC'D DOCKET N0:
XXX 1
/320 DESCRIPTION:
ENCLOSURES:
Ltr re our 9-24-73 ltr..... furnishing info on
" Faulty Overcurrent Trip Delay Device in Circui Breakers for Engineered Safety System.........
ACKNOWLEDGED PLANT NAME: Three Mile Island Units 1 & 2 FOR ACTION / INFO?l4ATICM
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