ML20010F330
| ML20010F330 | |
| Person / Time | |
|---|---|
| Site: | University of Wisconsin |
| Issue date: | 09/03/1981 |
| From: | Cashwell R WISCONSIN, UNIV. OF, MADISON, WI |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8109100047 | |
| Download: ML20010F330 (2) | |
Text
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a.
e Univer sit y o f Wisconsin I
NUCLEa4 MEACTOM LABOMATOMY AD DR E SS:
HUCLEAR E NGINE EMlN4 DEP AM TMENT ISO MEC H ANIC AL E N G I N E. E P 4 N G JulLDtNG P HO NE 2 42. 3 9 92, AREA COOK 40s.
M A DtSON. WISC ONSIN S3706 September 3, 1981 i
1:
i i
1 Director of Licensing U.S. Nuclear Regulatory Commission Washington, D. C.
20545 Re: Docket 50-156-I
Dear Sirs:
l On Tuesday, 1 Septe.iber 1981, an event reportable to NRC under Technical
'Sepcifications item 6.7 c(4) occurred. The circumstances and subsequent actions are indicated below.
Description of event:
Michael Jensen was the operator on duty with the reactor on automatic con-trol at full power. At about 1435, Jensen asked Daniel Range to take the watch while he delivered a telephone message. Range verbally agreed to take the watch, but did not sign into the log since he thought Jensen would return in just a few seconds. Jensen returned to the control room 15 or 20 minutes later. At that time Range, Jensen and Daniel LeGare were in the control roon and they were engaged i
in a discussion. No nention of reassuming the watch on the console was made by either Range or Jensen. Another stiff member entered the console area and asked about the status of some laboratory equipment.
LeGare, Jensen and the other staff l
member left the control room to go into Room 132 (an adjacent room outside the area defined by UWR 001 as a permissable location for the operator on duty but within earshot of the console annunciator) to look for the equipment. At some point Range left the control room,probably before the other group left.
R. Cashwell left room 132 and entered the control room, passing the group that had lef t the control room in the process. The interval between the group leaving the control room and Cashwell's entry was a matter of a few seconds, not exceeding 20 seconds, since the doors to the two rooms are only 12 feet apart. Upon entering the control room i
l Cashwell noted there was no operator on duty and assumed control. Jensen returned to the control room about 2 minutes later. Had Cashwell not entered the control room the console would have been unattended for tbout 2 minutes before Jensen re-turned.
Procedure 001 defines the a
'a allowable for operator observation.
It also defines the procedure for relir of one operator by another.
The ever.t is an
" observed inadequacy in the implen'
.ition of administrative or procedural control" and is chus. reportable under the af erenced Technical Specification.
O V
6 0109100047 810903 PDR ADOCK 05000156 S
o#
a Dircctor of Lic;nring U. S. Nuc1 car R:guletory Comniccion Pag 2 2 S:ptenb;r 3, 1981 Corrective actions:
- 1) The conoole was remanned within a few seconds of the event.
- 2) Oral reprimands were innediately given to each of the involved operc-tors.
- 3) A written reprimand was issued to each involved operator and placed in his license file on 3 September 1981.
- 4) All licensed persannel attended a lecture on proper compliance with written procedures on 3 Septenber 1981.
5)
Mr. Ken Ridgeway of Region III, USNRC Office of Inspection and En-forcement was notified on the morning of 2 September 1981, including contemplated corrective actions.
Very truly yours,
}
JU R. J. Cashwell Reactor Director RJC:mid XC: USNRC, Region III Of fice of Inspection and En',rcement tiax W. Carbon, Department Chairman Reactor Safety Committee Registered !! ail, Return Receipt Requested