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Standard Interpretation

Standard: 2009 TNI
Section: V1M6, Section 1.7.1 (a)


Is factory characterization of gamma detectors using monte carlo simulation software an accepted means of efficiency determination. If yes, which simulation software is accepted (i.e. GEANT4, MCNPX)?


(Quality Systems Expert Committee and NELAP AC, 10-21-13)

No. Section 1.7.1 a) states that "Instrument calibration shall be performed with reference standards as defined in Section The standards shall have the same general characteristics (i.e., geometry, homogeneity, density, etc.) as the associated samples."