ML19319E509
| ML19319E509 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 08/12/1975 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19319E507 | List: |
| References | |
| NUDOCS 8004110782 | |
| Download: ML19319E509 (2) | |
Text
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Non-Routinc, Non-Radiolop,ical Eny'*enmental.~ Report No. 50-313/75-43 2.
Report Date: '8-12-75 3.
Occurrence Date: 8-4-75'
'4.
Pacility:
Arkansas Nucicar One - Unit 1 Russellville, Ark.
i 5.
Identification of Occurrence:
Chemical. concentration of sodium nitrite, ammonia and " chloride in condenser circulating water increase across plant in excess of ETS limits.
6.
Conditions Prior to Occurrence':
Steady-State Power X
Reactor' Power 2415 M11th Hot Standby Net Output 790 p.nve Cold-Shutdown Percent of Full Power 94 T Refueling Shutdown Load Changes During Routinc
' Power Operation Routine Startup
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' Operation.
g Routino Shutdown Operation Other (specify) 5 i
7.
Description of Occurrenec:
Sampics were taken from the intake and discharge canals and Point J20 on
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Monday, 8-4-75.
Lab analysis ' indicated the following parameters in excess of ETS limits.
' Parameter Units Increase ETS Limit
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. Sodium Nitrito intake' irs. discharge PPM 0.04 6 0.005 Sodisim Nitrite Point #20 vs. discharge PPM 0.04 6 0.005 Chloride Point #20 vs. discharge PPM' 37 25 Ammonia intake vs. dischargo PPM 0.25 0.05 At monia Point #20 vs. discharge PPM 0.25 0.05
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,Non-Routinc, Non-Radiological linvirremnental Report No. 50-313/75-13 i
i 8.
Designation of Apparent Cause of Occurrence:
Design Proceduro Manufacture -
UnusualServiceContkition g
Including Environmental i
L Installation /
Construction Component Tailtire Operator Other (specify) Neutralizing tank draining'into discharge canal at time of sampling.
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ANALYSIS OF 0CCURRENCE:
The neutralizing tank, whicit centains impurities remaining after regenerating the' condensate demineralizers and plant make-up water domineralizers, was being dumped into the discharge flume when samples were taken.
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liquid releases were in progress at time of sampling.
No other 1
' 10.
CORRECTIVE ACTION:
Revised ETS has b'ecn submitted to NRC and is currently under review.
11.
FAILURE DATA:
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' Environmental Reports No.This occurrence is similar to those reported in 50-313/75/25 through 50-313/75-42.
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