ML19326B641
| ML19326B641 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 05/27/1975 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19326B640 | List: |
| References | |
| NUDOCS 8004160414 | |
| Download: ML19326B641 (3) | |
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Non-Routine, Non-Radiological Environmental Report No, 50-313/75-29 2.
Report Date:
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Occurrence Date:
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'4 Facility: Arkansas Nuclear One-Unit 1 Russellville, Arkansas
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Identi[ication of Occurrence:
C' hemical concentration of three parameters increased across plant in excess of Environmental Technical Specification limits.
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" 6: Conditions Prior to Occurrence:
Steady-State Powcr X-Reactor Power 1458 MWth Hot Standby Not Output 459 MWo Cold Shutdown-Porcent of Fu11' Power 56.8 %
Refueling Shutdown Load Changes During Routine Power Operation Routine Startup Operation Routine Shutdown Operation Other (specify) i 7.
Description of Occurrenec:
Samples taken from the intake and discharge canals and at point 20 on
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May 19,.1975, indicate that chemical concentrations of 3 parametsrs increased across the plant in excess of ETS limits:
Parameter Units Increase ETS Limits Conductivity, Intake'vs. Discharge 19.5 10 pH, -Intake vs. Discharge pH
'0. 6 0.5
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Ammonia,. Intake vs. Discharge mg/l 0.095 0.05 (O
Ammonia, Point 20 vs. Discharge mg/l 0.105 0.05 80D4'160 W !
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Non-Routine, N0n-Radiological Enviror"nental Report No. 50-313/75-29 8.- Designation of pparent Cause of' Occdtrence:
Design Procedure Manufacture dnusual Service Condition Including Environmental Installation /
Construction Component Failure
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Operator Other (specify)
Neutralizing tank draining into discharge canal at time of sampling.
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Analysis of Occurrence:
3 The neutralizing tank, which contains water impurities remaining after regenerating condensate demineralizers and plant makeup water demineralizers, was being drained into the discharge flume when samples were taken. No other liquid releases were in progress at the time of sampling. The pH of the neutralizing tank was check L prior to release and determined to be within Technical Specification limits of.6.0 and 9.0.
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n Non-Routine, Non-Radiological Environmental Report No. 50-313/75-29 l
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Corrective Action:
We are reviewing our ETS chemical limits with the Arkansas Department of Pollution Control and Ecology.
It has been determined that there is no basis for many of our ETS chemical discharge limits and that our water sampling and testing prograin does not verify that we are meeting or are not meeting the conditions. of our permit to discharge into the Arkansas River or the conditions of the Arkhnsas Water Quality Standards, Regula-i
- I tion Number 2 (Table.'2-3 in' ETS).
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Failure Data:
d The circumstances of this report are similar to those es reported in Non-Routine,.Non-Radiological Environmental Report No. 50-313/75-28.
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