ML19260C716

LER 79-114/04T-0:on 791221,environ Radiological Monitoring Sample Indicated Co-60 Concentration of Onsite Nmpp Location as Being Ten Times Value of Control Station Sample. Caused by Possible Concentration of Trace Metals

ML19260C716
Person / Time
Site:	FitzPatrick
Issue date:	01/03/1980
From:	W. Verne Childs POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19260C711	List: ML19260C710 ML19260C716
References
LER-79-114-04T, LER-79-114-4T, NUDOCS 8001080494
Download: ML19260C716 (2)

Text

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POWER AUTHORITY OF THE STATE OF NEW YORK JAMES A. FITZPATRICK NUCLEAR POWER PLANT DOCKET NO. 50-333 ATTACHMENT TO LER 79-il4/04T-0 Page 1 of 1 The following Environmental Radiological Monitoring Sample is an anamalous acasurement based on criteria outlined in the James A. FitzPatrick Nuclear Power Plant Technical Speci fications, Appendix B, Paragraph 5.6.2.b:

SEDIMENT SAMPLES pCi/gm (dry)

SAMPLE LOCATION

• DATE Co-60

1. O f f-S i te Oswego HarLer 10/ 3/79 < 0.08 Transect - 00

2. On-Site NMPP 10/ 3/79 < 0.08 Transect - 01 3 On-Site NMPP 10/ 3/79 0.90 Transect - 02

• See Technical Speci ficat ion, Appendix B, Figure 4.1.1-1 The activi ty level of Co-60 in sample Number 3 above is greater than ten times the control sample (Number 1 above) for the same sample period.

The control station ten times value is based on ten times a Lower Limit of Detection (LLD) value. The liquid release from the plant has been low for 1979 to date. The total liquid release of Co-60 from the plant was 0.203 Ci for January 1, 1979 to October 2, 1979 An integrated release of this type should not produce any detectable environmental impact.

The sediment found off shore from 9 Mile Point is transient by nature, dependent on the micro dynami,cs of the promontories, currents, winds, and waves. The pitysical makeup of the off shore area is predominately bedrock. The chemical makeup of the sediment may cause low concentration of trace metals to concentrate in small quantities by acting as a ion exchange medium with dissolved material in the lake water.

The lake sediment is not directly in the aquatic food chain. Bottom feeding biota may ingest sasil quantities of sediment but to a very limi ted degree. No passage of radio-nuclides to the human food chain from material deposited in lake sediment is expected.

it should also be noted that currer,t Standard Technical Specifications do not list reporting requirements for sediment samples because they are not considered significant in making dose-to-man estimates.

Exanination and analysis of similar sample activity date (f rom 1978) shows a gene ral reduction in the concentration of Co-60 at the indicator s tations for si te.

NOTE: LER 78-068,78-072, 78-077, and 78-087 are related events.

1703 232

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