IR 05000346/1989008
| ML20247C313 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 07/19/1989 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML20247C298 | List: |
| References | |
| 50-346-89-08, 50-346-89-8, NUDOCS 8907240325 | |
| Download: ML20247C313 (2) | |
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TABLE 2-U-S NUCLEAR-REGULATORY. COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT-CONFIRMATORY MEASUREMENTS PROGRAM
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FACILITY: DAVIS BESSE FOR THE 1 QUARTER OF 1989
NRC-------
---L I CENSEE-
---LI CENSEE t NRC---
SAMPLE ~
ISOTOPE RESULT ERROR RESULT ERROR RATIO RES.
T.
L WASTE H-3 3.6E-02 1.OE-04 3.SE-02. 1.OE-03 9.7E-01 3.6E 02 A SR-89 1.6E-06
~8.OE-08 1.6E-06 1.OE-07 1.OE 00 2.OE 01. A SR-90 4.0E-07 2.0E-08 3.9E-07 2.0E-08 9.7E-01-2 I Ol'
A FE-55 1.7E-04 1.OE-06 6.SE-04 4.OE-05 3.9E 00 1.
.' ' 02 D-
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T TEST'RESULTS:
- AaAGREEMENT
- DsDISAGREEMENT.
- CRITERIA RELAXED NsNO COMPARISON
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en 8907240325 890719 PDR ADOCK 05000346 FDC a
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.T-ATTACHMENT 1
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CRITERIA FOR COMPARING ANALYTICAL.. MEASUREMENTS
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This attachment provides criteria for comparing results of capability tests and verification measurements. The criteria-are based on an empirical relationship which combines prior experience and the accuracy needs of this program..
In these criteria,' the judgment limits are variable in relation to the com-parison of the NRC's value to its associated one sigma uncertainty.. As that ratio, referred to in this program as " Resolution", increases, the acceptability of a licensee's measurement should be more selective. Conversely, poorer
- agreement should-he considered acceptable as the resolution decreases. The values in the ratio criteria may be rounded to fewer significant figures to.
maintain statistical consistency with the number of significant figures reported by the NRC Reference Laboratory, unless such rounding will result in a narrowed category of acceptance..
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RESOLUTION-RATIO = LICENSEE VALUE/NRC REFERENCE VALUE Agreement
<3 No Comparison 2.5 23 and
<4 0.4
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2.0 3,4 and
<8 0.5
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1.67 23 and
<16 0.6
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2J6and
<51 0.75 - 1.33 251 and
<200 0.80 - 1.25 2200 0.85 - 1.18 Some discrepancies may result from the use of different equipment, techniques, and for some specific nuclides. These may be factored into the acceptance criteria and identified on the data sheet.
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