ML20079E699
| ML20079E699 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 12/31/1990 |
| From: | OMAHA PUBLIC POWER DISTRICT |
| To: | |
| Shared Package | |
| ML20079E696 | List: |
| References | |
| NUDOCS 9110070269 | |
| Download: ML20079E699 (2) | |
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ADDENDUM TO APPENDIX A (continued)
EPA TIML-Control Lab Results Limit Explanation
-Code Analysis (pti/L)'
(pCi/L)*
STW-589 Sr 90 17.311.2 17.4-22.6 Sample was reanalyzed in triplicate; results of reanalyses 18.811.5 pCi/L.
No further action is planned.
STH-599 K
1300.0169.2' 1414.7-1685.3* Sample was reanalyzed in triplicate.
Results of reanalyses 1421.7195.3 m The cause of low results is unknown.g/L.
STW 601 Gross 11.012.0 11.0-32.4 Sample was reanalyzed in triplicate.
Alpha Results of reanalyses, 13.411.0 pCi/L.-
STf-447 Sr-90 17.310.6 7.4 12.6 The cause of high result is unknown.-
There was no sample left for reanalysis..
Results of the next cross-check sample was within EPA limits.
1 STAF-457 Sr-90 14.710.6 15.4-20.6 The calculations were verified. The j
cause of low results is unknown.
There l
was no sample left for reanalysis.
Result of the analysis of the next sample was within EPA control limit.
STW-461 Ru-106 39.712.5 41.3-58.7 The cause of the low-results is unknown.
Thirty-eight percent of partici)ating laboratories failed the test.
Result of the analysis of the next sample was i
within EPA control limit.
STM-464 Cs-137 43.711.5 22.3-39.7 The cause of the high results is-unknown. There was no sample left for reanalysis.
Results of the analysis of the next EPA sample was within control limit.
STW-467
-I-131 30.310.6 34.4-55.4 After receiving EPA report, the calcula-tion was checked. The wrong collection 1 date had been used.
The results of the recalculation was 39.2 pCi/L within EPA control limit.
-STW-477 Ra-228 2.711.0 3.7-6.3 The cause of the low results is unknown.
There was no sample left to be re-analyzed.
- Reported in pCi/L unless otherwise noted.
i
-
- Concentrations are reported in mg/L.
i A-38 Revision 1, 9/9/91 9110070269-910927 PDR ADOCK 05000285 R
ADDENDUM TO APPENDIX A (continued)
EPA TIML Control Lab Results Limit Explanation Code Analysis (pCi/L)*
(pti/L)*
STW-478 Gross Beta 38.711.2 42.3-59.7 The activity was recalculated using a self-absorptian correction factor for EPA water.
The result of the recalculation was EC 2 pCi/L within EPA control limits STW-482 Ra-228 5.210.2 8.2-14.0 Fifty percent of the participating laboratories failed the test.
The analytical 3rocedure was checked.
Result of tic next crosscheck sample analysis was within EPA control limits.
STW-483 Sr-90 21.012.0 22.4-27.6 The cause of low result is unknown.
Result of the next crosscheck sample was within EPA control limits.
STH-504 K
1382.7134.4 1393.4-1656.6 The error was found in conversion from pCi/L to mg/L.
Corrected result is 1406 mg/L within control limits.
STW-520 Ra-228 3.410.1 3.9 6.7 The calculation was checked.
False positive recovery seems to be the cause of too low results.
- Reported in pCi/L unless otherwise noted.
A-39 Revision 0,9/9/91l 1
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