ML19319E525
| ML19319E525 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 07/29/1975 |
| From: | Cavanaugh W, Rueter D ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19319E520 | List: |
| References | |
| NUDOCS 8004110792 | |
| Download: ML19319E525 (4) | |
Text
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ATTAClla!ENT "B" NON-ROIRINE REGULATORY RE50RT REVIEW SilEET
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Unit:
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Report
Title:
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Report Number:
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t Reviewed and Approved by:
Plant Safety Committee YES
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NO ()
Plant Superintendent YES 6q)
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Reference:
[L4)A-(hlo Date: (-2 '( 77
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Date: 78 Reviewed by: '
Licensing Supervisor
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Date: 7 78 S"
Approved by:
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Magger of Nu'cidar prvices
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Date: 7 - ?- T~ - 2 ~ ~
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Director of Power Produc. tion i
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Attachment "B" Apri.1 23, 1975 NSP-10, Rev. 3 Page 1 of 1 8004110 792
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Non-Routine, Non-Radiological Environmental Report No.
50-313/75-41
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Report Date:
July 29, 1975 3.
Occurrence Date:
July 23, 1975 4..
Facility:
Arkansas Nuclear One-Unit 1 Russellville, Arkansas 5.
Identification of Occurrence:
Chemical concentrations of three parameters, 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 Mh'th llot Standby Not Out13ut Mh'c Cold Shutdown Percent of Full ' Power 95 1.oad Changes During Routine Refueling Shutdoun
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Power Operation 8
Routino Startup Operation Routine Shutdoun Operation
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Other (specify) i 7.
Description of Occurrenec:
pH and ammonia concentration in condenser circulating water increased across the plant as follows:
Parameter Units-Increase ETS Limit p!!, intake vs. discharge.
pH 0.6 0.S l
NH, ie,take vs. discharge mg/l 0.08 0.05 3
NH, intake vs. discharge mg/l 0.08 0.05 l
3 March'4, 1975 NSP-10,' Rev. 2 Page 2 of 4
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Non-R'outine, Non-Radiological Environmental Report No.
50-313/75-41
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'{e::12 nation of Apparent Cause of Occurrence:
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Design Procedure Manufacture Unusual Service Condition Including Environmental Installation /
Construction Component Failurc Operator Other (specify)
~X Neutralizing tank draining into discharge fiume at time cf sampling.
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Analysis of Occurrence:
The neutralizing tank, which contains impurities remaining after regenerat-ing condensate demineralizers and plant make-up water demineralizers, was being drained into the discharge fiume when samples were taken. No other liquid releases were in progress ~at the time of sampling.
Four circulating water pumps were in. operation.
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March'4, 1975 NSP-10, Rev. 2 Page 3 Of 4 i
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n Non-Routine, Non-Radiological Environmental Report No. 50-313/75-41
- 10. Corrective Action:
Revised ETS have been submitted to NRC and are currently under review.
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Failure Data:
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The circumstances of this report are similar to those reported in Non-Routine, Non-Radiological Environmental Reports No. 50-313/75-25 through 50-313/75-40.
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N5P-10,'Rev. 2 Page 4 of.1 I
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