ML19291B680
| ML19291B680 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/20/1975 |
| From: | Arnold R METROPOLITAN EDISON CO. |
| To: | |
| Shared Package | |
| ML19291B679 | List: |
| References | |
| NUDOCS 7911110159 | |
| Download: ML19291B680 (1) | |
Text
ENCL 0SURE
.- 2etropolitan Edist Ocepany 28UlCGij uw. ::
Three Mile Island Nuclear Station Unit 1 ('DiI-1)
--- ~
Dogket No. 50-289 Operating License !!o. DPR-50 Nonroutine 30-Day Znvironmental Report 75-04 n,..
s.
18-2 $ $ [
.... - = -
Report on an Anc alous Measured Level of Radioactivity Descrintion of Measured Level A monthly ecmposite of veekly grab sa:ples of surface river w t about 15 miles devnstrean frca the T'II-l river discharge had a t t l a er collected activity of 1.20 x 10-6 pCi/cc as reported to Met-Ed on October oa tritium which was determined by Met-Ed's censultants du 21, 1975.
This pCi/ce,
pericd.
eration
_Possible Cause Discharges are made frc an irregular schedule based en unit operating conditionsthe TMI-l Liquid for the radiological environmental conitoring progra Weekly grab samples basis.
this sample were taken during periods of evapcrater condeIt o form and, accordingly, during periods of higher-than-normal river watnsate tank discha er tritium level.
Analysis of Measured Level It is believed that neither the health nor safety of th by the occurrence represented by this sample in that: e public was threatened Per=issible Concentration LevelThe level of tritiu activity was less tha a.
axi=u 61ven in 10CFR20 for = embers of the public.
b.
The level of tritiu activity at the nearest devnstream sou continucus public use was a background level (4.11 x 10-7 rce of uCi/ce).
No Technical Specification limit c.
were exceeded.
d.
The event resulted frc TMI-1 Final Safety Analysis Report. normal unit cperations as described in the
_ Corrective Actienc The discharge of effluents frc= the Evaporator Condensat Analysis Repert. process associated with unit operatiens and is described in the e Tank is a normal in acco-dance with TMI-l Environmental Technical SpecifiSampling nal Safety nue cations, Table 3.
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