ML19320A271
| ML19320A271 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 05/06/1975 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19320A257 | List: |
| References | |
| NUDOCS 8004210558 | |
| Download: ML19320A271 (3) | |
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Non-Routine, Non-Radiological Environmental ' Report No. 50-313/75-26 s
2.
Report Date:
5/6/75 3.
Occurrence Date:
4/21/75 4.
Facility:
Arkansas Nuclear One-Unit 1 Russellville, Arkansas 5.
Identification of Oc'currenc.e:
Turbidity increase in plant circulating water exceeded Environmental Technical Sp'ecification limits per ETS 2.3.3 and ETS 4.1.1.a(4).
6.
Conditions Prior to Occurrence:
Steady-State Power Reactor Power MWth Ibt Standby Not Output MWe Cold Shutdown X
Percent of Full Power Refueling Shutdown Load Changes During Routino Power Op' ration e
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Routino Startup
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Routine Shutdown Operation Other (specify)
Plant shut down for maintenance.
7.
Description of Occurrence:
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Sampics taken at intake and discharge show that turbidity in the discharge canal.was 200% greater that turbidity in the intake canal (intake - 10 JTU,
' discharge - 30 JTU).
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bbrch 4, 1975 NSP-10, Rev. 2 Page 2 of 4
N Non-Routine, Non-Radiological Environmental Report No. 50-313/75-26 i
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Designation of Apparent Cause of Occurrence:
a Design Procedure j
l Manufacture Unusual Service Condition Including Environmental Installation /
Construction Component Failure Operator Other (specify) 4 Sample inaccuracy.
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'9.
Analysis of Occurrenec:
It is believed that sanrples taken were not truly representative of lake conditions; taerefore, occurrence is not realistic. Four circulating water pumps were running at time of sample collection and no liquid releases were in progress. No trash grinding was'in progress.
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A I-Non-Routine, Non-Radiological Environmental Report No. 50-313/75-26 4
10.
Corrective Action:
l Turbidity and conductivity tests will be performed as soon as possible following sample collection in the future to interrogate results.
_ Questionable.results will b,e verified by resampling.
In addition, testing is being done to verify sample accuracy.
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