ML20114D512

Nonroutine Environ Operating Rept:On 841226,data Indicated Sensitivity Spec Not Met for Radiological Analysis of Environ Fish Samples,Per Reg Guide 4.8 & NUREG-0473.Caused by Short half-lives of Radionuclides

ML20114D512
Person / Time
Site:	Nine Mile Point
Issue date:	01/23/1985
From:	Lempges T NIAGARA MOHAWK POWER CORP.
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
RTR-NUREG-0473, RTR-NUREG-473 NMP-10284, NUDOCS 8501310387
Download: ML20114D512 (3)

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1. NMP-10284 NIAGARA MOHAWK POWER CORPORATION NIAGARA MOHAWK 300 ERIE BOULEVARD. WEST SYRACUSE. H. Y.13202 January 23, 1985 Dr. Thomas E. Marley Regional Administrator United States Nuclear Regula. tory Commission Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 Re: Docket No. 50-220

Dear Dr. Murley:

. In accordance utLth Nine Mile Point Nuclear Station Unit M1 Technical Specifications, we hereby submit the fattowing 30-day Nonroutine Environmental Operating Report. This report is sub-mitted in accordance utLth the required content of section 4.6.2 of .the Appendix B Technical Specifications in ef feet at the time of the occurrence.

Very traly yours,

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Thomas E. Lempges Vice President Nuclear Generation TEL/HJF/to enctosure cc: Director, Office of NRR (l copy)

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3501310387 850123 PDR ADOCM 0S000220 5 PDR 69p 3 .ift

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NONROUTINE ENVIRONMENTAL OPERATING REPORT Nine Mile Point Nuclear Station Unit 1 Docket No. 50-220 January 23, 1985 Introduction This Nonroutine Environmental Operating Report is submitted in accordance with Section 4.6.2.a of the Nine Mile Point Nuclear Station Unit 1 Technical Specifications, Appendix B (Environmental Technical Specifications) which were in effect at the time of the occurrence. Section 4.6.2.a indicates that a report shall be sub-mitted in the. event that Section 2, " Limiting Conditions for Operations" or a report level or specification is reached (as specified in Section 3, " Environmental Surveillance").

Description Appendix B, Table 3.2-1, requires that a sensitivity (or LLD value) of 80 pCi/Kg- dry or less be attained for the radiological analysis of environmental fish samples. This sensitivity specification, as presented on Table 3.2-1, applies to gamma spectral analysis, Sr-89 analysis and Sr-90 analysis.

Fish samples collected during October 1984 showed several radionuclides with a sensitivity (or LLD value) of greater than 80 pC1/Kg- dry when analyzed by gamma spectral analysis. Sensitivities for Sr-89 and Sr-90 analyses were less than the required sensitivity for the October 1984 samples.

These inconsistencies were noted as a result of receipt and review of fish sample data on December 26, 1984.

Cause The required sensitivity was not able to be met for several of the radionuclides for the gamma spectral analyses because of the rela-

.tively short half-lives of the radionuclides in question. In addition, the required sensitivity is very low and is well below sensitivities required by Regulatory Guide 4.8 (Environmental Technical Specifications for Nuclear Power Plants) or NUREG-0473 (Standard Radiological Effluent Technical Specifications for Boiling Water Reactors).

i-a .g NONROUTINE ENVIRONMENTAL OPERATING REPORT (continued)

Docket No. 50-220 January 23, 1985 Corrective Actions Several corrective actions were taken by the licensee. These actions included:

(1) The required fish samples were analyzed using a large sample quantity and were counted for long periods of time in an attempt to achieve low sensitivities.

(2) The . licensee has completed work to finalize the Radio-logical Effluent Technical Specifications (RETS) based on NUREG-0473. These specifications have replaced the Environmental Technical Specifications (ETS). Implement-ation of the' RETS will provide an attainable fish analysis sensitivity based on the more recent Branch Technical Position (1979) to Regulatory Guide 4.8 and NUREG-0473.

The Radiological Effluent Technical Specifications (RETS) were placed into effect on January.1, 1985.

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