IR 05000400/1989001

Errata to Insp Rept 50-400/89-01,consisting of Confirmatory Measurements Comparison & Criteria for Comparisons of Analytical Measurements

ML20245C263
Person / Time
Site:	Harris
Issue date:	05/30/1989
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
Shared Package
ML18005A946	List: IR 05000400/1989001
References
50-400-89-01, 50-400-89-1, NUDOCS 8906260110
Download: ML20245C263 (2)

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ENCLOSURE 1 CONFIRMATORY MEASUREMENT COMPARISONS OF H-3, FE-55, SR-89, AND SR-90 ANALYSES i FOR HARRIS NUCLEAR PLANT ON JANUARY 9, 1989 l-

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.1 Licensee NRC Ratio l Isotope (uCi/ml) (uCi/ml) Resolution (Licensee /NRC) Comparison J

.l H-3 2.20 E-5 2.66 0.08 E-5 33 0.83 Agreement l Fe-55 2.63 E-5 2.88 0.09 E-5 32 0.91 Agreement i Sr-89 1.12 E-4 1.14 0.03 E-4 38 0.98 Agreement l Sr-90 5.85 E-6 6.17 0.25 E-6 25 0.95 Agreement

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ENCLOSURE CRITERIA FOR COMPARISON 3 0F ANALYTICAL MEASUREMENTS This enclosure provides the NRC's criteria for the. comparison of results of analytical radioactivity measurements. These criteria are- based on empirical relationships which combines- prior experience -in comparing radioactive +"

analyses, the measurement of the statistically random process of radioact ve emission, and levels of agreement in radioactivity measurements acceptable ..

the NR In . these criteria, the " Comparison Ratio Limits"2 denoting agreement or disagreement between licensee and NRC results 'are variabl This variability is a function of the ratio of the NRC's analytical value relative to . its associated statistical and analytical uncertainty, referred to in this program as " Resolution"2 As the numerical value of " Resolution" increases, the range

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of acceptable variations or~ differences between the NRC.and licensee analytical becomes smaller or more restrictive. Conversely, as.the value of " Resolution" decreases, a wider-and less restrictive variation or. difference between the NRC and licensee analytical values is considered acceptabl For comparison purposes, a ratio between the licensee's analytical value and the NRC's analytical value is computed for each radionuclides present in a given sample. The computed' ratios are then evaluated.for agreement or disagreement based on " Resolution." The corresponding values for " Resolution"- and the

" Comparison Ratio Limits" are listed in the Table below. Ratio values -which are either above or below the " Comparison Ratio Limits" are considered to be -

.ir. disagreement, while ratio values within or encompassed by the " Comparison Ratio Limits" are considered to be in agreemen TABLE NRC Confirmatory Measurements Acceptance Criteria Resolution vs. Comparison Ratio Limits

- Compari son. Ratio Limits

. Resolution for Agreement

<4 0.'4 - .5 - .6 - l'.66 16 - 50 0.75 - 1.33 51 - 200 0.80 - 1.25

>200 0.85 - 1.18 2 Comparison Ratio = Licensee Value NRC Reference Value 2 Resolution = NRC Reference Value Associated Uncertainty

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