ML19319E423
| ML19319E423 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 10/08/1975 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19319E420 | List: |
| References | |
| NUDOCS 8004100703 | |
| Download: ML19319E423 (3) | |
Text
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-1 2;p-Routine, Non-Radiological Environmental Report No.
50-313/75-50 2.
Report Date:
.0ctober 8, 1975 3.
Occurrence Date:
September 30, 1975 4.
Facility.:
Arkansas Nuclear One-Unit 1 Russellville, Arkansas 5.
Identification of Occurrence:
Chemical concentration,of.two parameters increased across the plant in excess of En~ironmenta1' Technical Specification limits.
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Conditions Prior to Occurrence:
Steady-State Power X
Reactor Power 2440 MWth Hot Standby Net Output 795 MWe Cold Shutdown Percent of Full Power 95 %
O Refueling Shutdown Load Changes During Routine Power Operation Routine Startup Operation Routine Shutdown Operation Other (specify) 7.
Description of Occurrence:
Samples taken from the intake and discharge canals and at point 20 on September 29, 1975, indicate that chemical concentrations of 2 parameters increased across the plant in excess of ETS limits:
Parameter Units Increase ETS Limits Sodium Nitrite, Intake vs. discharge mg/l 0.023 0.005 Chlorides,. Point 20 vs. discharge mg/l 29 25
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Non-Routine, Non-Radiological Environmental Report No.
50-313/75-50 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 time of sampling.
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Analysis ot' Occurrence:
i The neutralizing tank which contained water impurities remaining after regenerating condensate demineralizers and plant makeup water deminer-l alizers was being drained into the discharge fiume vhen samples were taken. No other liquid releases were in progress at the time of sampling.
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1 Non-Routine, Non-Radiological Environmental Report No. 50-313/75-50 i
10.
Corrective Action:
Revision to ETS concerning chemical discharges has been prepared and 1
submitted to the NRC for approval.
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Failure Data:
,l The circumstances of this report are similar to those reported in Non-1 Routine, Non-Radiological Livironmental Reports No. 50-313/75-28 through
. l 50-313/75-49 i
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