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Pass/Fail Criterion for a Simple Radiation

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DOI: 10.4236/mi.2012.13004    3,526 Downloads   10,149 Views   Citations


One of the simplest tests of a radiation portal monitor (RPM) is a series of n repeats (a vehicle drive-through) in which the ith repeat records a total number of counts Xi and alarms if Xi ≥ T where T is an alarm threshold. The RPM performance tests we consider use n repeats to estimate the probability p = P(Xi ≥ T). This paper addresses criterion A for testing RPMs, where criterion A is: for specified source strength, we must be at least 95% confident that p ≥ 0.5. To assess criterion A, we consider a distribution-free test and a test relying on assuming the counts Xi have approximately a Poisson distribution. Both test options require tolerance interval construction.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

T. Burr and A. Gavron, "Pass/Fail Criterion for a Simple Radiation," Modern Instrumentation, Vol. 1 No. 3, 2012, pp. 27-33. doi: 10.4236/mi.2012.13004.


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