ML20197C788

Addendum to Insp Repts 50-266/86-09 & 50-301/86-08, Consisting of Table 2, Confirmatory Measurements Program Facility:Point Beach for 2nd Quarter of 1986 & Attachment 1, Criteria for Comparing Analytical Measurements

ML20197C788
Person / Time
Site:	Point Beach
Issue date:	10/31/1986
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
Shared Package
ML20197C770	List: ML20197C765 ML20197C788
References
50-266-86-09, 50-266-86-9, 50-301-86-08, 50-301-86-8, NUDOCS 8611070039
Download: ML20197C788 (2)

See also: IR 05000266/1986009

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TABLE 2

U S NUCLEAR REGULATORY COMMISSION

OFFICE OF INSPECTION AND ENFORCEMENT

CONFIRMATORY MEASUREMENTS PROGRAM

FACILITY: POINT BEACH

FOR THE 2 QUARTER OF 1936

=

=-NRC LICENSEE---- ---LICENSEE:NRC----

SAMPLE ISOTOPE RESULT ERROR RESULT ERROR RATIO RES T

L WASTE G BETA 9.7E-07 4.0E-08 6.0E-07 0.0E-01 6.2E-01 2.4E 01 D

H-3 2.0E-02 3.0E-04 2.0E-02 0.0E-01 1.0E 00 6.5E 01 A

SR-89 5.0E-08 9.0E-09 2.0E-08 0.OE-01 4.0E-01 5.6E 00 D

2 COUNT SR-89 5.0E-08 9.0E-09 5.7E-08 0.0E-01 1.1E 00 5.6E 00 A

T TEST RESULTS:

A= AGREEMENT

D= DISAGREEMENT.

• = CRITERIA RELAXED

N=NO COMPARISON

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8611070039 861031

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ATTACHMENT 1

CRITERIA FOR COMPARING ANALYTICAL MEASUREMENTS

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.

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In these criteria, the judgment limits are variable in relation to the comparison

of the NRC's value to its associated one sigma uncertainty. As that ratio,

referred to in this prograra 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 reported by the NRC

Reference Laboratory, unless such rounding will result in a narrowed category of

acceptance.

RESOLUTION RATIO = LICENSEE VALUE/NRC REFERENCE VALUE

Agreement

<4 0.4 - 2.5

4- 7 0.5 - 2.0

8- 15 0.6 - 1.66

16 - 50 0.75 - 1.33

51 - 200 0.80 - 1.25

200 - 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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