ForewordPerformance specifications@ design criteria@ and testing methods are provided for the evaluation of radiation detection instruments that are pocket sized and carried on the body. ScopeThis standard describes design and performance criteria along with testing methods for evaluating the performance of instruments for homeland security that are pocket-sized and carried on the body for the purpose of detecting the presence and magnitude of radiation. This standard specifies the performance criteria for radiation detection and measurement instruments that may be used in a variety of environmental conditions. The performance criteria contained in this standard are meant to provide a means for verifying the capability of these instruments to reliably detect significant changes above background levels of radiation and alert the user to these changes.