ML20008E204
| ML20008E204 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 10/21/1980 |
| From: | Mroczka E NORTHEAST UTILITIES |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| MP-1-1634, RO-50-245-80-02, RO-50-245-80-2, NUDOCS 8010240407 | |
| Download: ML20008E204 (2) | |
Text
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P O. BOX 270 7,
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J =%C".?",L"l October 21, 1980 MP-1-1634 Mr. Boyce H. Grier Director, Region I Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission i
631 Park Avenue King of Prussia, Pennsylvania 19406 i
REFERENCE:
Provisional License DPR-21 ETS-NR/50-245/80-02
Dear Mr. Grier:
Pursuant to the Millstone Environmental Technical Specifications, j
Section 2.4, Northeast Nuclesr Energy Company hereby forwards the following report regarding late performance of the off-gas hydrogen analyzer weekly calibration check surveillance.
Environmental Technical Specification 2.4.2.3.H requires prompt reporting of this occurrence; the occurrence was inadvertently classified as 30-day reportable.
The NRC Resident Inspector was notified of this occurrence within one hour of discovery.
Yours truly, NORTHEAST NUCLEAR ENERGY COMPANY
/
E.
. Mroczka Station Superintendent Millstone Nuclear Power Station EJM/MJB:mw Attachment cc: Director, Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.
20555 8010240 4 0 7 I
4 LER ETS-NR/50-245/80-02 NORTHEAST NUCLEAR ENERGY COMPANY MILLSTONE NUCLEAR POWER STATION - UNIT 1 PROVISIONAL LICENSE NUMBER DPR-21 DOCKET NUMBER 50-245 IDENTIFICATION OF OCCURRENCE
~ A routine surveillance regarding tI1e calibration and accuracy of tne
~
Off-Gas Hydrogen Analyzers was not performed within the required time interval.
CONDITIONS PRIOR TO OCCURRENCE 4
Prior to the occurrence the plant was operating at a' steady state power level of 93 percent.
DESCRIPTION OF OCCURRENCE On September 22,1980, at 0840 hours0.00972 days <br />0.233 hours <br />0.00139 weeks <br />3.1962e-4 months <br />, it was discovered that the off-gas hydrogen analyzer weekly calibration check surveillance had not been performed within the required time interval (ETS 2.4.3.3.G).
This surveillance was requirea to be performed on September 18, 1980; the surveillance was completed on September 19, 1980.
APPARENT CAUSE OF OCCURRENCE The cause of the subject surveillance to be performed one day late was due to a scheduling oversight.
ANALYSIS OF OCCURRENCE The off-gas hydrogen analyzers are provided to alert the reactor operators of potential off-gas recombiner malfunctions and to provide a method to verify that off-gas hydrogen concentrations downstream of the off-gas recombiners are maintained within a safe level.
Failure to perform the subject surveillance within the required time period did not result in degradation of the monitoring function of the off-gas hydrogen analyzers.
The surveillance that was performed during the previous time period as well as the surveillance 1r question that was performed one day late demonstrated that the hydrogen analyzer response was within the bounds of the acceptance criteria.
CORRECTIVE ACTION The subject surveillance that was required to be performed on September 18, 1980, was successfully completed on September 1.9, 1980.
Technicians have been reminded.to stay alert of scheduling requirements to insure against recurrence of problems of this type.
l l'
/
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