ML19319E516
| ML19319E516 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 08/01/1975 |
| From: | Cavanaugh W, Rueter D ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19319E513 | List: |
| References | |
| NUDOCS 8004110786 | |
| Download: ML19319E516 (4) | |
Text
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ATTACl! MENT "B" NON-ROUTINE REGULATORY REPO!1T REVIEW SilEET Plant:
Unit:
Report
Title:
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f> m Report Number:
Reviewed and Approved by:
Plant Safety Committee Y'ES ()
NO (4
Plant Superintendent YES ()
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Reference:
PG A-3 2_O Date:
Reviewed by:
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Date:
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Licensing Supervi:;or CN f/
Approved by: _ '
f4nagerofSucleafSsrvices Date: /
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Approved by:
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' ' ' Director of Powei Production
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Attachment "B" April 23, 1975 NSP-10, Rev. 3 Page 1 of 1 80041107
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Non-Routine, Non-Radiological Environmental Report No.
50-313/75-42 2.
Report Date:
nugust 1, 1975 3.
Occurrence Date:
July 30, 1975 4.
Facility:
Arkansas Nuclear One-Unit 1 l
Russellville, Arkansas i
S.
Identification of Occurrence:
Chemical concentration of sodium nitrite in condenser circulating water increased across plant in excess of Environmental Technical Specification limits.
6.
Conditions Prior to Occurrence:
Steady-State Power X
Reactor Power 2388 MWth i
Hot Standby Net Output 786 Mwe Cold Shutdown Percent of Full Power 93 g i
Refueling Shutdown Load Changes During Routine (f-s,\\
Power Operation-
- 7. Gl Routine Startup Operation Routine Shutdown Operation Other (specify) i 7.
Description of Occurrence:
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Samples were taken from the intake and' discharge canals on July 28, 1975, and lab analysis indicates that sodium nitrite concentration in the plant discharge canal was 0.069 mg/l greater than sodium nitrite concentration in the intake canal. ETS limit is 0.005 mg/1.
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Non-Routine, Non,-Radiological Environmental Report No.
50-313/75-42 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 was being drained into the discharge fiume at the time of this occurrence.
9.
Analysis od Occurrence:
Samples were taken when the neutralizing tank was being drained into the discharge fiume.
Four circulating water pumps were in operation provid-ing approximately,750,000 gallons per minute dilution flow. The neutralizing tank contains water impurities renaining after regenerating s;
condens, ate demineralizers.
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4 Non-Routine, Non-Radiological Environmental Report No.
50-313/75-42 J
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- 10. Corrective Action:
'A revision to the Environmental Technical Specification concerning j-chen:ical discharges has been submitted to the NRC for approval.
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Failuro Data:
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This occurrence is similar to those reported in Non-Routine, Non-Radiological Environmental Reports No. 50-313/75-25 through 50-313/75-41.
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