05000293/LER-1980-021-04, /04T-0:on 800508,algae Sample from Discharge Outfall Area Contained Reportable Concentration of Co-60, According to Yankee Environ Lab 800616 Analysis Rept.Cause Not Stated

/04T-0:on 800508,algae Sample from Discharge Outfall Area Contained Reportable Concentration of Co-60, According to Yankee Environ Lab 800616 Analysis Rept.Cause Not Stated

ML19318D130
Person / Time
Site:	Pilgrim
Issue date:	06/25/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19318D125	List: 05000293/LER-1980-021, Forwards LER 80-021/04T-0 05000293/LER-1980-021-04, /04T-0:on 800508,algae Sample from Discharge Outfall Area Contained Reportable Concentration of Co-60, According to Yankee Environ Lab 800616 Analysis Rept.Cause Not Stated
References
LER-80-021-04T, LER-80-21-4T, NUDOCS 8007070382
Download: ML19318D130 (2)

LER-1980-021, /04T-0:on 800508,algae Sample from Discharge Outfall Area Contained Reportable Concentration of Co-60, According to Yankee Environ Lab 800616 Analysis Rept.Cause Not Stated

Event date:
Report date:
2931980021R04 - NRC Website

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BOSTON EDISON COMPANY PILGRIM NUCLEAR POWER STATION DOCKET NO. 50-293 Attachment to LER 80-021/04T-0 on 6/16/80 Boston Edison received an analyses report from the Yankee Atomic Electric Laboratory which indicated that a reportable concentration of Co-60 (262 8.7 pCi/kg) existed in an Irish Moss sample taken from the

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Pilgrim Station discharge canal outfall area on 5/8/80.

This concentration is in excess of 10 times the measured concentration at the control station in Ellisv111e (11.7 + 2.7 pCi/kg).

Due to processing and market dilution it is extremely unlikely that any indi-vidual would consume any material with the measured concentration of Co-60.

However, even if a person were to directly consume this algae at seafood consumption rates given in Regulatory Guide 1.109, the annual dose to that person would be about 0.01 mrem to the total body and 0.05 mrem to the maximum exposed organ (GI-LLI).

As a result of these extremely small calculated doses (as compared to the natural background dose rate of about 100 mrem /yr) we have concluded tl 2 there is no risk to public health and safety.

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