ML20202F340

Errata to Insp Rept 50-461/86-11,consisting of Table 2 Re Confirmatory Measurements Program Data Sheet & Criteria for Comparing Analytical Measurements,Inadvertently Omitted from 860320 Submittal

ML20202F340
Person / Time
Site:	Clinton
Issue date:	04/07/1986
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
Shared Package
ML20202F313	List: ML20202F306 ML20202F340
References
50-461-86-11, NUDOCS 8604140143
Download: ML20202F340 (2)

See also: IR 05000461/1986011

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TABLE 2

U S NUCLEAR REGULATORY COMMISSION

OFFICE OF INSPECTION AND ENFORCEMENT

CONFIRMATORY MEASUREMENTS PROGRAM

FACILITY: CLINTON PS

FOR TFE 1 QUARTER OF 1986

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NRC------- ----LICENSEE ---LICENSEE:IURC----

SAMPLE ISOTOPE RESULT ERROR RESULT ERROR RATIO RES T

L SPIKED PN-54 4.1E-05 8.OE-07 4.5E-05 3.OE-06 1.1E 00 5.1E 01 A

CO-60 5.9E-05 1.2E-06 6.4E-05 4.1E-06 1.1E 00 4.9E 01 A

CS-137 6.6E-05 2.OE-06 6.BE-05 3.4E-06 1.OE 00 3.3E 01 A

T TEST RESULTS:

A3AGREEPENT

UsDISAGREEPENT

onCRITERIA RELAXED

NnNO COPFARISON

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U604140143

DR 860407

ADOCK 05000461

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AT T ACHMEriT__I

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 exper,ience and the accuracy needs ot this

program. , -

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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 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, unlE5s such rounding yill 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

_13 and <4 .0.4 -

2.5

2.4 and <8 0.5 -

2.0

.2,8 and <16 0.6 - 1.67

jt16 and <51 0.75 - 1.33

.251 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.

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