05000333/LER-1980-064-04, /04T-0:on 800804,environ Radiological Monitoring Surveillance Revealed Periphyton Activity Greater than 10 Times Control Sample.Review of Sample Results Indicates No Significant Environ Impact

/04T-0:on 800804,environ Radiological Monitoring Surveillance Revealed Periphyton Activity Greater than 10 Times Control Sample.Review of Sample Results Indicates No Significant Environ Impact

ML19344A995
Person / Time
Site:	FitzPatrick
Issue date:	08/18/1980
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
ML19344A992	List: 05000333/LER-1980-064, Forwards LER 80-064/04T-0 05000333/LER-1980-064-04, /04T-0:on 800804,environ Radiological Monitoring Surveillance Revealed Periphyton Activity Greater than 10 Times Control Sample.Review of Sample Results Indicates No Significant Environ Impact
References
LER-80-064-04T, LER-80-64-4T, NUDOCS 8008250318
Download: ML19344A995 (3)

LER-1980-064, /04T-0:on 800804,environ Radiological Monitoring Surveillance Revealed Periphyton Activity Greater than 10 Times Control Sample.Review of Sample Results Indicates No Significant Environ Impact

Event date:
Report date:
3331980064R04 - NRC Website

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POWER AUTHORITY OF THE STATE OF NEW YORK JAMES A. FITZPATRICK NUCLEAR POWER PLANT 4

DOCKET NO.50-333 ATTACHMENT TO LER 80-064/04T-0 Page 1, of 2

The following Environmental Radiological Monitoring sa:ple is an acamalous measurement based on criteria outlined in the James A. Fit:-

Patrick Nuclear Power Plant Technical Specifications, Append.'.x B, Para-graph 5.6.2.b:

Periphyton Samples pCi/gm (Wet)

Sample Location

• Sample Date Co-60 Activity 1.

Control Oswego Harbor 6/12/80

<0.0047 Recount (7/31/80) 6/12/80

<0.0047 2.

On-Site 6/12/80 0.0077 j; 0.0031 NMPP 3.

On-Site 6/12/80 0.047 1 0.0057 JAF Recount (7/26/80) 6/12/80 0.049 i 0.0053 Recount (7/31/80 6/12/80 0.052 1 0.0068 See Technical Specifications, Appendix 3, Figure 4.1.1-1 for location details.

The activity level of Co-60 in the JAF on-site sample is greater than 10 ti=es the control station value for the same sa=ple period based on sample re-analysis.

l The JAF samples were collected off shore from the power plant in l

approximately one to three feet of water. The sample location was 1,000 feet from the discharge structure and was located outside the near field dilution area (5 dilutions).

The total liquid release of Co-60 for the period of January 1, 1980 to June 12, 1980 was 0.20 C1.

An integrated release of this quantity of Co-60 should not produce a significant environmental impact. The release l

of Co-60 during this period was well within the discharge limits required by the plant's Technical Specifications, Appendix 3.

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POWER AUTHORITY OF THE STATE OF NEW YORK JAMES A. FITZPATRICK NUCLEAR POWER PLANT DCCKET NO. 50-333 ATTACHMENT TO LER CO- 064/04!-0 Page 2

of 2

A dose calculation fro: activity fround in JAF periphyton sa=ple is di#ficult as these crganis=s are not in the human food chain.

For the purpose of illustration a dose calculation can be =ade using unrealistic assu=ptions.

If an adult were to censu=e 64 kg/yr of periphyton (an a=ount equal to the =axi=u: annual adult censu=ption of green leafy vegetables) the dose frc= the Co-60 concentration of 0.052 pC1/g (wet) would be equal to 0.30 =re: to the whole body and 2.57 =re to the GI tract (critical organ). The significance of thesa greatly over-esti=ated dosas to =an are very low with respect to natural background radiation.

Because periphyton sa=ples are near the base of some aquatic food chains, a review of the analytical results for other aquatic sa=ples taken in the vicinity of the site during this sa=e period was =ade.

Mollusk sa=ples collected on June 12, 1980 shewed no detectable Co-60 activity.

In addition, no detectable levels of Cc-60 were found in fish sa=ples collected during May 1980, which would indicate that the activity found in the JAF periphyten sa ple is not being transferred and re-concentrated in the upper levels of the aquatic food chain.

An exa=ination and analysis of si=ilar sa=ple data (Dece=ber 1974 to present) shows a decreasing trend of sa ple activity in the periphyton sa=ples taken in the vacinity of Nine Mile Point. A second collection of periphyton sa:ples is scheduled for August 4, 1980.

SOTE: LER 78-068,73-072, 78-077,78-037 and 79-114 are related events.