IR 05000295/1985030

Addendum to Insp Repts 50-295/85-30 & 50-304/85-31, Consisting of Comparisons of Results of Liquid Sample Collected During Insp & Criteria for Comparing Analytical Measurements

ML20141G544
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	01/06/1986
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
Shared Package
ML20141G511	List: IR 05000295/1985030 ML20141G505
References
50-295-85-30, 50-304-85-31, NUDOCS 8601100308
Download: ML20141G544 (2)

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TABLE 2 U S NUCLEAR REGt!LATORV COMMISSIOr!

OFFICE OF INSPECTION AND ENFORCEMENT CONFIPMATOPY MEASUREMENTS PROGPAM FACILITY: ZION FOR THE ? OUARTER OF 1995

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N R C-------

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LICENSEE----

LICENSEE:NRC----

. SAMPLE ISOTOPE RESULT ERROR RESULT ERROR PATIO RES T

L-WASTE G BETA 2.9E-06 1.0E-07 3.2E-06 0.0E-01 1.1E 00 2.9E 01 A

H-3 8.1E-03 1. 2E- 04 6. 7E--03 0.OE-01 0.3E-01 6,BE 01 A

SR-89 3.0E-09 8.0E-09 (1.9E-08 0.0E-01 6.3E 00 3.7E-01 B

SR-90 2.0E-09 4.0E-09 (6.9E-09 0,0E-01 3.5E 00 5.0E-01 B

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T TEST RESULTS:

AaAGREEMENT D DISAGREEMENT onCRITERIA RELAXED

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NnNO COMPARISON-B BELOW COMPARISON LIMIT

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ATTACHMENT 1 l

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 Progra,m.

In these criteria, the judgment limits are variable in relation to the com-parison of the NRC's value te 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 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

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<3 No Comparison

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<4 0.4 2.5

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<8 0.5 2.0

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<16 G El-l'.67 jt,16 and

<51 0.75 - 1.33 jt51 and

<200 0.80 - 1.25

1200 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.