The scope of this standard is to establish minimum performance criteria and test requirements for non-alarming radiation detectors used to manage the exposure of emergency responders to photon radiation. The detectors shall provide rapid and clear indication of the level of radiation exposure. Emergency responders include fire services, law enforcement and medical services. Other possible users include Critical Infrastructure Key Resources (CIKR) such as heavy equipment, transportation, and utilities personnel and members of the public who may be involved in emergency situations. PERDs can be of two types, either alarming electronic or non-alarming. Both types of PERDs have radiation response ranges appropriate for radiation emergencies. Alarming PERDS are addressed in ANSI/IEEE N42.49A [B7]. (Alarming PERDS can alarm on exposure rate, accumulated exposure, or both.) Non-alarming PERDs are ionizing photon radiation measuring devices that provide a visual indication of the accumulated exposure to the user and are designed to be worn or carried on the body of the user. These detectors do not have an audible or visual alarm. These detectors should provide an indication when recommended exposure guidance levels have been reached or exceeded. The typical users of non-alarming PERDs are responders performing time-sensitive, critical missions such as saving lives, property, and/or otherwise mitigating the effects of radiological emergencies. This standard provides a graded approach to assessing the performance of multiple types of non-alarming radiation detectors. The applicability of each type should be evaluated by the user. These detectors may include carbon fiber detectors and self-developing photochemical detectors. The carbon fiber detectors are designed for many reuses as described in ANSI N322-2009. The photochemical detectors are designed for a single emergency exposure or use. PERDs are not used to monitor personnel exposure for the purposes of confirming compliance with regulatory exposure limits, i.e., their indications are not intended to be used for accumulated exposure monitoring records for individuals, but are intended for emergency use.
- Sponsor Committee
- IM/RNIS - TC45 - Radiation and Nuclear Instrumentation and Systems
- Status
- Active PAR
- PAR Approval
- 2024-03-21
Working Group Details
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- IEEE Instrumentation and Measurement Society
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- IM/RNIS - TC45 - Radiation and Nuclear Instrumentation and Systems
- Working Group
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N42.49B - N42.49B Performance Criteria for Non-alarming Personal Emergency Radiation Detectors (PERDs) for Exposure Control
- IEEE Program Manager
- Vanessa Lalitte
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- Richard Kouzes
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