ML19345A801
| ML19345A801 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 11/14/1972 |
| From: | Loibl E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| References | |
| 50-029-72-100, 50-29-72-100, NUDOCS 8011250224 | |
| Download: ML19345A801 (3) | |
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ATOMIC ENERGY COMMISSION
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DIR ECTO R ATE OF' REGU LA TO R Y OPER ATIONS l
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-l RO Inquiry Renort No. 50-29/72-100
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Licensee:
Yankee Atomic Electric Company
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License No.:
DPR-3 1j Facility:
Yankee Rowe - PWR ij Descriptive
Title:
Type "B" - Loss of Facility 4
Prepared by:
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E. R. Loibl, Reactor Inspector
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Date and Manner AEC was Infor.ned:
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November 13, 1972, by telephone call from the licensee.
B.
Description of Particular Event or Circumstance:
i Vnile performing the control rod interchange during tiie present scheduled outage, it was observed that a bolt was lying on top of the lower core support plate'.
Observations made with a T.V.
camera through 40 feet of water indicated that there were two j
additional bolts lying loose. An examination of the bolts indi-cate that they are control rod shroud tie down bolts..
Preliminary determination identifies two shroud' tubes displaced.
There are a total of 32 shroud tubes, 8 for shim rods and 24 for moveable control rods. All T.V. monitoring has been recorded on tape.
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C.
Action by Licensee:
1 1.
The licensee has contacted Westinghouse to assist in conduct-ing a detailed internal inspection which includes removal of the lower core barrel.
s 2.
The core was completely unloaded on November. 11, 1972. This includes all fuel, control rods and sources.
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The Plant Operating Review Committee has met and reviewed the j
problem.
1 4.
The Nuclear Audit and Review Committee has'been informed and corporate officers have been notified and have been on site.
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5.
The plant will remain shutdown for an undetermined time.
6.
A written report will be submitted to the AEC within 30 days in accordance with 10 CFR 20.405.
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MEMO ROUTE SUP Forrn AEC-9) (Rev. May 14.1947) AECM 0240 Sa ** * *at ta'*-
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Fa' act'a-Note and return.
For si eatu e.
For informa tion.
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10 (s.,n..n nt:3 immus atuaans RO TNOUTRY RFPORT NO. 50-29/72-100- YANKEE ATOMIC J. G. Keppler, y
RO (2) o^u n vcTnTc c0MPANY - The subiect inouiry report is for F.
,..,,.a n a re a,.nup <-forn, tion.
Inspection covernee vi
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inmus at"^ars cc: RO:E (5) hn provided at the site at the appropriate time. Ye
. entral Files Reg. Standards (2 )
office will be kent in.forned of significant develop-Dir. of Licensing (,3 )
-aate.
Dietrib'utinn will be nade by this office to TO (Heme and tnat)
INinAL,3 ptMARKs the PDR. LPDR. NSIC, DTIE and State representatives h./
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after review by the licensee for proprietary infor-
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"NPiON.
FROM t' lam. a M unst)
- EM AAKs tv R. T. Carlson, Chief.
Reactor Operations Br., RO:I P,eong perl LATJ f p
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