ML19319E392
| ML19319E392 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 11/26/1975 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19319E385 | List: |
| References | |
| NUDOCS 8004100680 | |
| Download: ML19319E392 (3) | |
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Non-Routine, Non-Radiological Environmental Report No.
50-313/75-57 s
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Report Date: November 26, 1975 3.
Occurrence Date: November 19, 1975 4.
Facility:
Arkansas Nuclear One-Unit 1 Russellville, Arkansas i
- 5. - Identification of Occurrence:
Chemical concentration of three parameters increased across the plant in excess of Environmental Technical Specification limits.
6.
Conditions Prior to Occurrence:
1 Steady-State Power X
Reactor Power 2542 MWth Hot Standby Net Output 833 Mwe i
Cold Shutdown Percent of Full Power 99 %
Refueling Shutdown Load Changes During Routine b
Power Operation Routine Startup Operation Routine Shutdown Operation
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Other (specify) i 7.
Description of Occurrence:
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Samples taken from th-intake and discharge canals and at point 20 on 11/18/75 indicate that chemical concentrations of three parameters increased across the plant in execys of ETS limits:
Parameter Units Increase ETS Limit Sodium nitrite.(point 20 vs. discharge mg/l 0.013 0.005 Turbidity (Intake vs. discharge) 14.2 10 t
O 8004100 [7Cy s
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Non-Routine, Non-Radiological Environmental Report No.
50-313/75-57 8.
Designation of Apparent Chuse of Occurrence:
Design Procedure Manufacture Unusual Service Conditi'n o
including Environmental Installation /
Construction Component Failure Operator Other (specify)
X Neutralizing tank draining into discharge canal at time of sampling.
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Analysis of Occurrence:
The neutralizing tank which contains water impurities remaining after regenerating condensate demineralizers and plant makeup water demin-i 1
eralizers was being drained into the discharge fiume when samples were i
taken. No other liquid releases were in progress at time of sampling.
Four circulating water pumps were running providing approximately 764,000 gpm dilution flow.
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I Non-Routine, Non-Radiological Environmental Report No.
50-313/75-57 i
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Corrective Action:
Revisions to Environmental Technical Specifications concerning chemical i
discharges have been prepared and submitted to the NRC for approval, i
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Failure Data:
l The circumstances of this report are similar to those reported in Non-Routine, Non-Radiological Environmental Reports No. 50-313/75-28 through 50-313/75-56.
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