ML20041F264
| ML20041F264 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 02/26/1982 |
| From: | Otoole J CONSOLIDATED EDISON CO. OF NEW YORK, INC. |
| To: | |
| References | |
| NUDOCS 8203160344 | |
| Download: ML20041F264 (2) | |
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John D. o*Toola V:ce Pre Aert Conschdated Edison Compar y of New York, Mc V
4 Irymg Place, New York. N v' 10003 Te:ephone (212) 460 2533 February 26, 1982 Re:
Indian Point Unit Nos. 1 and 2 Docket Nos. 50-03 and 50-247 A-S Mr. Ronald C. Haynes, Regional Administrator RgggIYED 9
Office of Inspection and Enforcement MARJ 5 bN286
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U.
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Nuclear Regulatory Commission 2
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Region I 631 Park Avenue E
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King of Prussia, Pa.
19406 1>
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Dear Mr. Haynes:
ps In accordance with Section 5.6.2.2 of the Environmental Tech-nical Specification Requirements (ETSR) for Indian Point Units
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1 and 2, Consolidated Edison hereby submits a final Anomalous Measurement Report.
A preliminary Anomalous Measurement Report
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was submitted to your office on November 12, 1981.
Con Edison completed its investigation of this anomalous measure-ment.
An examination of liquid effluent releases from the Company's Indian Point Units 1, 2 and from PASNY's Unit 3 was made to determine whether a relationship between releases and plant uptake could be made.
Based on this review, it appears that the liquid radioactive effluents over the past several months have been greater than the amounts normally released for Cobalt-58 and Cobalt-60.
Further investigation revealed that a major con-tributor to these increased releases is the waste demineralizer system trom Unit 3.
The amount of activity released was within Technical Specifications limitations.
The anomalous measurement described in the November 12, 1981 report represents a spike value relative to concentrations observed in samples collected during the last few years from both the No. 17 station and the control station vegetation at Cold Spring, New York.
It should be pointed out that Potamogeton perfoliatus exhibits an affinity for cobalt and undergoes rapid growth during August and September.
It is typically used as an indicator organism, and rapid increases in cobalt concentrations for this species in late summer are not unusual.
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The species is not in a direct pathway to man. Other aquatic k-media including sediment, water, and biota further up in the food chain have been sampled recently with no unusual results.
fb[)b 8203160344 820226 PDR ADOCK 05000003 i10 S
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,,.~e Ronald C.
Haynes February 26, 1982 b
V There are many factors that affect the radioactivity con-centration in river vegetation, including water salinity, water flow rate, settling rate, resuspension of settled material, and chemical form of the radionuclides.
For these reasons, it is extremely difficult to determine if the activity in the vegetation is related to any specific releases.
Although there are no significant effecma from a radiological dose standpoint, and it is not certain that releases from Unit 3 caused the elevated sample results, Con Edison has been informed by the Power Authority of the State of New York that an increased demineralizer sampling scheme has been initiated to ensure timely changeout of waste water demineralizer beds.
This action is being taken to maintain lower levels of radioactive effluents.
Should you or your staff have any questions concerning this letter, please contact us.
Very truly yours,
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John D. O'Toole
,A Vice President
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