ML19309D994
| ML19309D994 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 08/18/1975 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19309D991 | List: |
| References | |
| NUDOCS 8004110775 | |
| Download: ML19309D994 (3) | |
Text
.
i g
i 1.
Non-Rottrine, Non-Radiological Environmental Report No.
50-313/75-44 j
2.
Report Date:
August 18, 1975 3.
Occurrence Date:
August 13, 1975 4.
Facility:
Arkansas Nuclear One-Unit 1 Russellville, Arkansas a
5.
Identification of Occurrence:
Chemical concentration of three parameters increased across the plant in excess of Environmental Technical Specification limits.
6.
Conditions Prior to Occurrence:
~~
Steady-State Power X
Reactor Power 2363 MNth Hot Standby Net Output MWe Cold Shutdown Percent of Full Power Refueling Shutdown Load Changes During Routine Power Operation
( ]d Routine Startup
_gs/
Operation s
Routine Shutdown Operation Other (specify)
'l 7.
Description of Occurrence:
Samples taken from the intake and discharge canals and at point 20 on August 12, 1975, indicate that chemical concentrations 'of 3 parameters increased across the plant in excess of ETS limits:
Parameter Units Increase ETS Limit Sodium Nitrite, Point 20 vs. Discharge mg/l 0.026 0.005 Turbidity, Intake vs. Discharge 42.8 10.0 Ammonia, Intake vs. Discharge mg/l 0.08 0.05 m
\\
/
./
8004110 N
-s s
m Non-Routine, Non-Radiological Environmental Report No.
50-313/75-44 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 fiume at time of sampling.
Arkansas River (discharge) more turbid than Illinois Bayou (intake).
9.
Analysis of Occurrence:
The neutralizing tank contains water impurities remaining after regenerating condensate demineralizers and the plant makeup water demineralizers was being drained into the discharge flume when samples were taken. Turbid conditions of the Arkansas River are beyond control of ANO operation.
~;
e
-__g
._w,
l s.
)
[
I Non-Routine, Non-Radiological Environental Report,No.
50-313/75-44 t
i i
10.
Corrective Action:
i Revisions to ETS concerning chemical discharges have been prepared and
)
submitted to the NRC for approval.
f l
l i
i f
J I
i i
i 1
11.
Failure Data:
1 The circumstances of this report are similar to those reported in Non-Routine, Non-Radiological Environmental Reports No. 50-313/75-25 through 50-313/75-43.
5 a,
1 i
I
~; :
1 l
4 i
I n
- e 4
e
,_,_,,,__,,_7_
,,m,,-
,.,, _r, mm7_,,_y
,_,__.y_,
y_,_,
__m,_.,
,_.,_._,,__,,,,,y,_-__,
,,,y