IR 05000250/1984032

Advises That Encl Comparison of Spiked Liquid Sample Results to Known Values Acceptable,Per NRC Confirmatory Measurements Program & Insp Repts 50-250/84-32 & 50-251/84-33. Acceptance Criteria for Comparisons Also Encl

ML20151T461
Person / Time
Site:	Turkey Point
Issue date:	02/04/1986
From:	Panciera V NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:	Woody C FLORIDA POWER & LIGHT CO.
References
NUDOCS 8602100274
Download: ML20151T461 (4)

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florida Power and Light Company t/ ATTN: Mr. C. O. Woody l Group Vice President i Nuclear Energy Department P. O. Box 14000 Juno Beach, FL 33408 Gentlemen:

SUBJECT: CONFIRMATORY MEASUREMENTS RESULTS DOCKET NOS. 50-250 AND 50-251 As part ~of the NRC Confirmatory Measurements Program, and supplemental to Inspection Reports 50-250/84-32 and 50-251/84-33, spiked liquid samples were sent on July 22, 1985, to your Turkey Point facility for selected radiochemical analyses. We are in receipt of your analytical results transmitted to us by your

. letter L-85-369. Verification of reported data values were discussed- with members of your staff on December 16, 1985. Provided as Enclosure 1 is a comparison of your reported results to the known values. The acceptance criteria for the comparisons are listed in Enclosure In our review of these dat'a, all comparative results were in agreement. These !

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data should be reviewed in greater detail by cognizant staff members for any significant trends in the data among successive years in which samples have been analyzed by your facility. Any biases noted may be indicative of a programmatic weakness and your efforts should be put forth in determining reasons for such -

biase These results and any results from previous years pertaining to these analyses will be discussed at future NRC inspection

Sincerely, cAi9tMI 990d by VinWN d ?onCUL Vincent W. Panciera, Acting Chief Reactor Projects Branch 2 Division of Reactor Projects Enclosures:

1. Confirmatory. Measurement Comparisons Criteria for Comparing Analytical Measurements cc w/encls: (See page 2)

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-pC.M.Wethy,<VicePresident Turkey Point Nuclear Plant X

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.d.'TurkeyPointNuclearPlant J..Acosta, Plant QA Superintendent

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Lt(Cl0SUREj CONFIRMAIORY HEASUREMENT COMPARISONS OF H-3, FE-55, SR-89, AND SR-90 ANALVSIS FOR IURKEY PolNT NUCLEAR PLANT ON JULY 22, 1985 190 tope Licensee NRC Resolution Ratio Compa r i son (uCi/ unit) (uCi/ unit) (Licensee /NRC)

H-3 3.09 E-5 2.981.06 E-5 50 1.01 Ag reement Fe-55 1.101.06 E-5 1.011.02 4 E-5 52 1.06 Ag reemen t Sr-89 1.19 t.05 E-te 1.251.084 E-14 31 .85 Ag reement Sr-90 1.13t.008 E-5 1.381.06 E-5 23 .82 Agreement

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ENCLOSURE 2 CRITERIA FOR COMPARING ANALYTICAL MEASUREMENTS This enclosure 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 In these criteria, the judgement limits denoting' agreement or disagreement between licensee and NRC results are variable. This variability is a function of the NRC's value relative to its associated uncertainty. As the ratio of the NRC value to its associated uncertainty, referred to in this program as

" Resolution"2 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 decrease For comparison purposes, a ratio2 of the licensee value to the NRC value for each individual nucTide 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 Table 1 below. Values outside of the agreement ratios for a selected nuclides are considered in disagreemen NRC Reference Value for a particular Nuclide

Resolution = Associated Uncertainty for the Value

Licensee Value Comparison Ratio = NRC Reference Value TABLE 1 - Confirmatory Measurements Acceptance Criteria Resolutions vs. Comparison Ratio Comparison Ratio for Resolution Agreement

<4 0.4. - .5. - .6 - 1.66 16 - 50 0.75 - 1.33 51 - 200 0.80 - 1.25

>200 0.85 - 1.18