ML19319E403
| ML19319E403 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 10/31/1975 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19319E398 | List: |
| References | |
| NUDOCS 8004100689 | |
| Download: ML19319E403 (3) | |
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1.
Non-Routine, Non-Radiological Environmental Report No. 50-313/75-53 2.
Report Date:
10/31/75 3.
Occurrence Date:
10/23/75 4.
Facility:
Arkansas Nuclear One-Unit 1 Russellville, Arkansas 5.
Identification of Occurrence:
Chemical concentration of three (3) parameters increased across the plant in excess of Enviror. mental Technical Specification limits.
6.
Conditions Prior to Occurrence:
Steady-State Power X
Reactor Power 2440 MWth Hot Standby Net Output 795 spge Cold shutdown Percent of Full Power 95 g Refueling Shutdown Load Changes During Routine O'"
Power Operation ___
Routine Startup Operation Routine Shutdown Operation Other (~specify) 8 1
4 7.
Description of Occurrence:
1 Samples taken from the in.ake and discharge canals and at point 20 on 10/20/75 indicate that chemical concentrations of three (3) parameters increased across the plant in excess of ETS limits:
Parameters Units Increase ETS Limit Chlorides, point 20 vs. discharge mg/l 76 25 Ammonia, intake vs. discharge mg/l 0.17 0.05 Ammonia, point 20 vs. discharge
.mg/l 0.18 0.05
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Non-Routine, Non-Radiological Environmental Report No.
50-313/75-53 8.
Designation of Apparent Cause of Occurrence:
Design Procedure Manufacture Unusual Service Condition Including Environmental Installation /
Construction Component Failure Operator Other (specify) x Neutralizing tank draining into discharge flume at the time of sampling 9.
Analysis of Occurrence:
The-neutralizing tank which contains water impurities remaining after
'z. generating condensate demineralizers and plant makeup water demin-etalizers was being drained into the discharge flume 4 hen samples were 3,
taken. No other liquid releases were in progress at the time of sampling.
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1l' Non-Routine, Non-Radiological Environmental Report No.
50-313/75-53
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Corrective Action:
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Revision to ETS concerning chemical discharges has been prepared and submitted to the NRC for approval.
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11.
Failure Data:
f Tuo circumstances of this report are similar to those reported in Non-Routine, Non-Radiological Environmental Reports No. 50-313/75-28.through 50-313/75-52.
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