ML20099J804

Revised Page 9 of 51 of 1991 Annual Radiological Environ Operating Rept for Wolf Creek Generating Station

ML20099J804
Person / Time
Site:	Wolf Creek
Issue date:	12/31/1991
From:	WOLF CREEK NUCLEAR OPERATING CORP.
To:
Shared Package
ML20099J802	List: ML20099J799 ML20099J804
References
NUDOCS 9208210211
Download: ML20099J804 (1)

Text

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M Food and Garden Crops Gamma analysis of broadleaf vegetation samples revealed naturally occurring gamma emitters K-40 and Be-7 at toncentrations comparable to preoperational and background levels.

Cs-137 was also detectec at Locations R-1 (indicator) and S-4 (control) during July. The concentrations were 0.0431 pCilgm and 0.0213 pCi/gm l respectively. In addition. Cs-137 vas de eted at Location G-1 in beptember, 0.0218 pCligm. These concentr tions for Ca437 are attriouted to fall:ut. The range of fallout Cs-137 seen in preoperational samplec was o.0131 to 0.0478 pC1/gm. Also, Cs-137 was not detected in the airborrm effluent releases from the plant during the third quarter of 1991. Finally, Cs-134 was not detected, although it would be expected if the occurrence of _

Cs.137 was related to plant operation (Cc-134 decays with a shorter half-life than Cs-137: detection of Cs-137 alone indicates older fallout as opposed to newly produced fiscion products).

No oth:: 3vnma emitters were detected for the remainder of the year, und no effech 91 lant operation were identified.

In addition to broadleaf vegetation, crop samples were collected which were irrigated with water from the Neosho River below the Wolf Creek Cooling Lake outfall. Gamma analysis revealed naturally occurring K-40 to be present in the samples, with no nuclides detected which could be attributable to plant operation.

Fish Naturally occurring K-40 was found in all fish samples collected with an average concentration of 4.63 pCi/gm (wet weight) for WCCL samples and 6.88 pC1/gm (wet weight) for the control samples. These concentrations are _

within the range reported during the preoperational period.

No other radionuclides were detected in fish during the year.

Recial Samples (not required bv Technical Specifications):

Game Animal and Bird Naturally occurring K-40 was measured in all game animal and bird samples at concentrations consistent with preoperational levels.

No other radionuclides were detected and no effects of plant operation were seen for this pathway.

1991 ANNUAL RADIOLOGICAI. ENVIRONMENTAL OPERATING REPORT VOLF CREEK GENERATING STATION PAGE 9 0F 51 92082102 PDR ADO h 482 PDR R

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