ML20137H384

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Ro:On 760106,operator Left Console Key in Switch So That Reactor Not Secured Per Tech Specs.Key Withdrawn from Console.Incident Discussed W/Operators & Large Red Plastic Tag Attached to Key to Make It More Visible
ML20137H384
Person / Time
Site: Dow Chemical Company, 05000000
Issue date: 01/12/1976
From: Anders O
DOW CHEMICAL CO.
To: Charles Brown
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20136D183 List: ... further results
References
FOIA-85-256, FOIA-85-258, FOIA-85-259, FOIA-85-261 NUDOCS 8508290041
Download: ML20137H384 (3)
v • d • e


Text

i Q

DOW CHEMICAL U.S.A.

January 12, 1976

,,auc4y oms,oy MIDLAND, MICHIGAN 48640 63-AJV Nuclear Regulatory Commission c/o Mr. Charles Brown Division of Compliance Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Sirs:

We would like to report an incidence of non-compliance with the Technical Specifications for the Dow TRIGA reactor which occurred on January 6, 1976 at our facility:

After completing the daily startup check which requires the testing of the scram circuits and control rod interlocks, etc., without taking the reactor to critical, the operator activated the manual scram circuit to secure the reactor.

He verified the control-rod drive motors had moved to their "down" position.

He then proceeded to calibrate the recorder display at the console and left momentarily to the adjoining laboratory to prepare for the planned sample activation.

Through an oversight he left the console key in the switch, so that the reactor was not secured in terms of the Technical Specifications.

After an elapsed time of approximately five minutes, the fact that the key was still in the console was recognized by a cc-worker, who notified the operator, who thereupon with-drew the key from the console and secured it in the proper way.

The incident involved no damage to property nor any radia-tion exposure to personnel or members of the public.

It involved no release of radioactive material or any mechanical or electric mal-functioning of the facility.

As remedial action, the incident was discussed with the operator and brought to the attention of other operators in the facility.

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AN OPERATING UNIT OF THE DOW CHEMICAL COMPANY F508290041 850712 PDR FOIA

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,4 1976 MOHN85-256 PDR

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- o Nuclear Regulatory January 12, 1976 Commission A large red plastic tag was attached onto the key to make the key more visible and reduce the possibility of over-sight in the future.

Very truly yours, L

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O.

U.'Anders D.

Reactor Supervisor Analytical Laboratories i

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