ML19291B689
| ML19291B689 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/24/1975 |
| From: | Arnold R METROPOLITAN EDISON CO. |
| To: | |
| Shared Package | |
| ML19291B688 | List: |
| References | |
| NUDOCS 7911110165 | |
| Download: ML19291B689 (1) | |
Text
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ENCLOSURE DC I
' Metropolitan Edison Company Three Mile Island Nuclear Station Unit 1 (TMI-1) j P
Docket No. 50-289 1
I Operating License No. DPR-50 Nonroutine T-Day Environmental Report 75-03 Report of an Anomolous Measured Level of Radioactive Material in the Environment Description of Measured Level Monthly composites of weekly grab sa=ples of river water collected approximately 0.5 miles (Station 9A2) and 1.5 miles (Station 9B1) downstream from the TMI-l discharge showed tritium concentrations as follows:
9A2 - 3,900 1 90 poi / Liter 9B1 - 2,720 1 1.9 pCi/ Liter 8
These values are greater than ten ti=es the control station value of 250 pCi/L which was determined by Met-Ed's consultants.
Possible Cause Low river flow rates associated with lov summer precipitation levels is believed to have reduced the nor=al mixing of effluents above the Ycrk Haven Dam.
Analysis of Measured Levels It has been determined that neither the health nor safety of the public was threatened by the activity levels represented by these sample results in that:
a.
The level of tritium activity was less than 0.1, of the Maximum Permissible Concentration given in 10CFR20 for unrestricted areas.
b.
The level of tritium activity at the nearest downstress source of water use was at normal background level. (273159.1 pCi/ Liter) c.
No Technical Specification Jimits were exceeded. (App. A) d.
The discharge of effluents from..w Liquid Waste Evaporator Condensate Tank is a normal process associated with unit operations, and is described in the Final Safety Analysis Report.
Corrective Action The discharge of effluents from the Liquid Waste Evaporator Condensate Tank is a normal process associated with and dependent on unit operations as described in TMI-l Final Safety Analysis Report.
Sampling of the environment vill centinue in accordance with TMI-1 Environmental Technical Specificaticns.
15($015 nu n /F o