ML20054B840
| ML20054B840 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/14/1982 |
| From: | Fasana A, Fasano A, Oneill B, Shanbaky M Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| PNO-TMI-82-009, PNO-TMI-82-9, NUDOCS 8204190246 | |
| Download: ML20054B840 (1) | |
Text
50320-82-0414 s
April 14,1982 PRELIttINARY NOT!FZCATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-TMI-82-09 Tnis preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance.
The information is as initially received witt ugfi:f -
l cation or evaluation and is basically all that is known by NRC staff on t ssdat Facili ty : GPU Nuclear Corporation Licensee Emer y Classi iNition.:
9
,cfjk 3 Three Mile Island, Unit 2 X
Not Applicab e 1-/
Docket. No. 50-320 2
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Subject:
POSTPONEMENT OF REACTOR BUILDING ENTRY DUE TO D00R INTERLOCK p
MECHANISM FAILURES.
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On April 14, 1982, onsite NRC staff observed a planned entry (No. 57) into t Ort ;
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reactor building.
At 9:21 a.m. a radiation control technician entered the reactor building, RB, to complete a preliminary radiation survey and to take grab air samples (tritium and particulate).
His activities were being monitored from the reactor building command center via closed circuit television.
At 9:31 a.m. it was noted by support technicians that the interlock mechanism to the personnel airlock door was jammed.
Attempts to use the
~ emergency exit, the equipment airlock door, failed when this emergency exit interlock mechanism jammed.
The technician was instructed via the command center, to remain in the personnel hatch airlock (a low dose area) until one of the RB airlock doors could be
'used.
At 10:23 a.m. the mechanism for the personnel airlock door interlock was freed, and the technician exited the building.
The technician's exit was delayed for 52 minutes.
His radiation dose for the entry was 89 mrem.
Entries into the Unit 2 reactor building have been postponed, by the licensee, until the RB airlock doors and interlocks (the personnel hatch normally used, and the equipment hatch door) are inspected, repaired, and tested.
Media interst may occur because of public sensitivity to TMI related events.
The NRC does not plan to issue a press release at this time.
The Commonwealth of Pennsylvania has been informed.
This preliminary notification is issued for information only and the NRC plans to continue monitoring events as they occur.
The NRC TMI Program Office received notification of this occurrence by continuous onsite reviews and this information was current as of 12:30 p.m. today.
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Contact:
B0'Neill 590-1145 MShanbaky 590-1140 'AFasano 590-1123 LBarrett 590-1120 Di stri bution :
H. St.
MNBB Phillips
,_ E/W Willste Air Rights _
Chairman Palladino ED0 NRR lE NMSS ST Comm. Gilinsky PA OIA RES B. J. Snyder Comm. Ahearne MPA AE0D Comm. Roberts ELD INPO MAIL:
SECY NSAC DCS Processing ACRS R:I R:II R:III ADM:DMB CA R:IV R:V
-63E[
OELD:
PDR 8204190246 820414
+t J. Tourtellotte M N OO9 PDR
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