ML19269E669
| ML19269E669 | |
| Person / Time | |
|---|---|
| Site: | 05000294 |
| Issue date: | 06/22/1979 |
| From: | Carrick J MICHIGAN STATE UNIV., EAST LANSING, MI |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7906290444 | |
| Download: ML19269E669 (1) | |
Text
MICHIGAN STATE UNIVERSITY COLLEGE oF ENGINEERING DIVuloN OF ENGINEERING RESEARCH EAST LANSING MICHIGAN 48824 June 22, 1979 Director, Division of Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Con: mission Washington, D.C.
20555
Dear Sirs:
RE: Docket 50-294, License R-114 This letter is in compliance with our Facility License which states that we are to report any incident or condition relating to the operation of the reactor which prevented or could have prevented a nuclear system from performing its safety function.
On 6-13-79, while performing a fuel temperature meter calibration, ic was noted that fuel temperature meter T1 was malfunctionhg in such a manner as to cause the temperature indication to drop to zero during full' power (250 KW(t)) operation. This did not constitute a violation of Technical Specification since meter T2 was fully operational during this time.
On 6-14, 6-15, and 6-18-79 meter T1 was inspected and tested as were the available thermocouples and their respective lead wires. The conclusion reached on 6-18-79 was that the thermocouples in one fuel element were failing intermittently. This fuel e'.ement is located in core position B5, serial number 7833.
In order to correct the problem, meter Tl was connected to a ther o-couple from the other instrumented fuel element which is located in core position Cll. Thus, T1 and T2 are measuring the fuel temperature in the same element, but at different axial positions. Meter T1 was checked on 6-18-79 to verify operability.
General Atomic Corporation will be contacted in the near future to determine if the problens with the thermocouples in fuel element 7833 can be resolved.
If there are any questions regarding this incident, please contact Reactor Supervisor, James Carrick, at (517) 353-9097.
Sincerely,
[" e L(_a w
' SI James Currick Reactor Supervisor y
cc:
U.S. Nuclear Regulatory Con:ctission 9
0 Donald Van Farowe
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