Standard Guide for In-Plant Performance Evaluation of Automatic Vehicle SNM Monitors
SNM monitors are an effective and unobtrusive means to search for concealed SNM, and facility security plans use them to prevent SNM theft or unauthorized removal from SNM access areas. Functional testing of monitors on a daily basis with radioactive sources can assure that they are in good working order. The significant use of a less frequent, in-plant evaluation of an SNM monitor is to verify that the monitor achieves an expected probability of detection for an SNM or alternative test source.
