ML19309D988
| ML19309D988 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 08/21/1975 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19309D981 | List: |
| References | |
| NUDOCS 8004110770 | |
| Download: ML19309D988 (3) | |
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Non-Routine, Non-Radiological Environmental Report No.
50-313/75-45
- 2.. Report Date:
8/21 /75 3.
Occurrence Date:
8/19/75 4.
Facility:
Arkansas Nuclear One-Unit 1 Russellville, Arkansas 5.
Identification of Occurrence:
i Chemical concentration of ammonia increased across the plant in excess of Environmental Technical Specification limits.
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Conditions Prior to Occurrence:
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Steady-State Power X
Reactor Power 2388 MWth flot Standby Net Output 785 gwe Cold Shucaown Percent of Full Power 93 %
Refueling Shutdown Load Changes During Routine O
Power Operation Routine Startup
__ k, Operation Routine Shutdown Operation Other- (specify) s 4.
7.
Description of Occurrence:
-4 Samples taken from the intake and discharge canals and at point 20 on 8/18/75 indicate that ammonia concentration increased across the plant in excess of ETS limits:
Parameter Units Increase ETS Limit Ammonia, Intake vs. discharge canal mg/l 0.1 0.05 j
Amm'onia, Point 20 vs. discharge canal mg/l 0.1 0.05 l
8004 n o ]70
Non-Routine, Non-Radiological Environmental Report No. 50-313/75-45 8.
Designation of Apparent Cause of Occurrence:
Design Procedure j
i Manufacture Unusual Service Condition
{
Including Envi.ronmental i
Installation /
Construction Component Failure I
operator other (specify)
X Neutralizing tank draining into discharge fiume at time of sampling.
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9.
Analysis of Occurrence:
1 The neutralizing tank, which contains water impurities remaining after i
regenerating condensate demineralizers and plant makeup water demineral-izers was being dr'ained into the discharge fiume when samples were taken. No other liquid releases were in progress at the time of sampling.
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Non-Routine, Non-Radiological Environmentc1 Report No.
50-313/75-45 10.
Corrective Action:
Revisions to ETS concerning. chemical discharges have been prepared and submitted to the NRC for approval.
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Failure Data:
The circumstances of this report are similar to those reported in Non-Routine, Non-Radiological Environmental Reports No. 50-313/75-25 through 50-313/75-44.
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