ML19269E349
| ML19269E349 | |
| Person / Time | |
|---|---|
| Site: | Pennsylvania State University |
| Issue date: | 06/25/1979 |
| From: | Cunningham R PENNSYLVANIA, UNIV. OF, PHILADELPHIA, PA |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7906270251 | |
| Download: ML19269E349 (1) | |
Text
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THE PENNSYLVANI A STATE UNIVERSITY 207 OLD MAIN BUILDING UNIVERSITY PARK, PENNSYLVANIA 16802 W e Preudent for Area Code Ria Research and Gradu.re Studies R65-6332 25 June 1979 Operating Reactors Division of Reactor Licensing U. S. Nuclear Regulatory Contmission Washington, D.C. 20555
Reference:
License R-2, Docket 50-05 Gentlemen:
On June 8,1979, during a routine daily checkout of the reactor 6nstru-mentation, it was discovered that the percent power meter stuck at 98% full scale and would not have scrammed had the power exceedt ' 38%. Amendment 16 to our license requires us to inform the Commission of any incident or condi-tion relating to the operation of the reactor which prevented or could have prevented the nuclear system from performing its safety function as described in the Technical Specifications. Hence, the problem was immediately reported to Region I by a phone call from Dr. S. H. Levine to Mr. Larry Briggs, 10:30 A.M.,
June 8, 1979.
Disassembly of the percent power meter revealed a collection of dust in-side the meter movement which increased the internal friction in the meter preventing proper operation at the upper end of its scale. The meter move-ment was cleaned and checked for proper operation and returned to service. No further deficiency with this system has been observed.
The discovery was made during checkout of the instrumentation; therefore, the reactor was not operated with this condition. It was operated again only after the repair was effected and the system checked to assure proper operation.
Sincarely yours,
~ -
R. G. Cunningham Vice President for Research and Graduate Studies RGC:hml O
cc: I. B. McMaster
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