Environmental dosimetry performance criteria: Pilot test of proposed ANSI draft standard N13.29

American National Standards Institute (ANSI) standards are a source of technical guidance on the application of passive radiation detectors in personnel and environmental monitoring programs. The proposed new ANSI Draft N13.29 describes performance tests for environmental dosimetry providers that are analogous to those now required in personnel dosimetry. The objective of this study was to pilot test the procedural specifications before Draft N13.29 is submitted for final balloting. The results of the performance tests are relevant to environmental surveillance programs, which may be affected if Draft N13.29 is approved. Seven environmental dosimetry providers submitted dosimeters for the pilot test, which included two phases. The first phase involved exposing dosimeters to laboratory gamma, beta, and x-ray sources at routine and accident dose levels. In the second phase, dosimeters were subjected to 90 d of simulated environmental conditions in a chamber that cycled through prescribed temperature and humidity parameters and lighting conditions. Two participants passed all categories of the laboratory test phase, and all seven passed the environmental test phase. We report here on the results of the performance tests; additional results relevant to finalizing Draft N13.29 are detailed elsewhere.