IR 05000321/1987025
| ML20151Z309 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 04/28/1988 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML20151X136 | List: |
| References | |
| 50-321-87-25, 50-366-87-25, NUDOCS 8805050245 | |
| Download: ML20151Z309 (2) | |
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ENCLOSURE 1
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COMPARISON Of MEASUREMENTS H-3. pCi/l Ratio l
} ample ID Licensee NRQ Resolu(i_on f licensgg/NRQ,}
Qomparison i
SN 13$0 (T-2, 81R2365)
3840 231 4140 230
0.93 Agreement SN 1351 (T-3, 87R2366)
5280 1 248 5640 t 240
0.94 Ag reement
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Not Compared SN 1352 ( T-4, 87R2358)
< 300
< 350
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i 51 1353 ( T-8, 87P2259)
1190 1 196 1070 1 210
1.11 Ag reement
$1 1354 (T-12, 87R2360)
121000 1 1720 115000 1 600 191 1.05 Ag reement
SN 13$5 (T
- 3, 87R2362)
4670 1 241 2620 1 230
1.78 Di sag reement SN 1356 (1-16, 8782361)
1080 f 194 1060 t 210
1.02 Ag reemen t SN 1357 (NTA, 81R2363)
4220 2 235 3480 230
1.21 Agreement S3 1358 (P15A, STR2356)
-99.6 1 177
< 350
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Not Compared l
SN 1359 ( P158, 87R2364)
14300 t 335 15I00 2 300
0.91 Ag reement 53 1360 ( P11A, 87R2357)
< 300
< 350
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Not Compa red l
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e ENCLOSURE 2
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Criteria for Comparing Analytical Measurements This enclosure provides criteria for comparing results of capability tests and verification measurenients. The criteria are based on an empirical relationship which combines prior experience and the accuracy needs of this program.
In these criteria, the judgement limits denoting agreement or disagreement between licensee and NRC results are viable. This variability is a function of the NRC's value relative to its associated uncertainty, referred to in this program as "Resolution"* increases, the range of acceptable differences between the NRC and licensee values should be more restrictive.
Conversely, poorer agreement between NRC and licensee values must be considered acceptable as the resolution decreases.
For comparison purposes, a ratio of the licensee value to the NRC value for
each individual nuclide is computed.
This ratio is then evaluated for agreement based on the calculated resolution. The corresponding resolution and calculated ratios which denote agreement are listed in the Table below. Values outside of the agreement ratios for a selected nuclide are considered in disagreement.
2 Resolution = NRC Reference Value for a Particular Nuclide Associated Uncertainty for the Value
"Comparison Ratio =
Licensee Value N5C Reference Value TABLE Confirmatory Measurements Acceptance Criteria Resolutions vs. Comparison Ratio Comparison Ratio for Resolution Agreement
< 4 0.4
- 2.5 4-
0.5 - 2.0 8-
0.6 - 1.66 16 - 50 0.75 - 1.33 51 - 200 0.80 - 1.R5,
>200 0.85 - 1.18
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