IR 05000346/1985024
| ML20136J576 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 11/19/1985 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20136J537 | List: |
| References | |
| 50-346-85-24, NUDOCS 8511250387 | |
| Download: ML20136J576 (2) | |
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TABLE 1 U S NUCLEAR REGULATORY dOMF11SSION OFFICE OF INS'PECTION AND ENFORCEMENT
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CONFIRMATORY MEASUREMENTS PROGRAM
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FACILITY: DAVIS BESSE FOR THE 3 OUARTER OF 1905
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NRC--
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LICENSEE
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SAMPLE ISOTOPE RESULT ERROR PESULT EPROR RATIO PES T
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L WASTE' G BETA 2.OE-05 7.OE-07 2.5E-05 O.OE-01 1.2E.00 2.9E 01 A
H-3 3.3E-04 5.0E-06 3.1E-04 0.0E-01 9. 4 E-01 6.5E 01 a
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SR-89 1.2E-08 7.OE-09 (2.OE-08 0.OE-O1 1.7E 00 1.7E 00 N
SR-90 1.5E-08 4.OE-09 ( 6. ^E- 00 0.OE-01 4.OE-01 3.7E 00 A
CO-58 1.7E-05 6.0E-07 1.4E-05 0.0E-01 8.6E-01 2.8E 01 A
CO-60 6.4E-06 3. OE- 07 7.7E-06 0.OE-O1 1.7E 00 2.!E O!
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CS-134 4.2E-06 2.OE-07 3.3E-06 0.OE-01 7.9E-01 2.1E O1 A
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0.OE-01 S.OE-01 3.6E 01 a
CS-137 1.1E-05 3. OE- 07 8.5E-06
T TEST RESULTS:
AhAGREEMENT D3 DISAGREEMENT coCRITERIA RELAXED
..N3NO COMPARISON sc
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85W2SO387 851119
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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
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agreement should be 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
,13 and
<4 0.4
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y_4 and
<8 0.5 2.0
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.15 and
<16 0.6 l'.67
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jt16 and
<51 0.75 - 1.33 j51and
<200 0.80 - 1.25
_1200 0.85 - 1.18
l 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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