IEC TS 62743:2012

Overview

IEC TS 62743:2012 - Radiation protection instrumentation: Electronic counting dosemeters for pulsed fields of ionizing radiation is a Technical Specification from the International Electrotechnical Commission (IEC). It applies to all types of electronic counting dosemeters used in pulsed radiation fields and defines the additional tests and parameters needed to ensure accurate measurement of single and repeated radiation pulses. The document treats pulsation as an influence quantity (like energy or incidence direction) and complements existing standards for continuous radiation.

Key Topics and Requirements

• Scope and exclusions
  • Applies to pulse-counting dosemeters (direct-reading); excludes dosemeters that rely on delayed pulses (e.g., activation by neutrons).
• Parameters that characterize pulsed workplaces
  • Minimum radiation pulse duration, maximum dose rate during a pulse, and maximum dose per pulse (workplace parameters).
• Parameters determined by type tests
  • Maximum measurable dose rate in a pulse (H_count,max)
  • Dead time (t_dead) and its type (extendable vs non-extendable)
  • Dose indication per counting event (G_count)
  • Measurement cycle time (T_cycle)
• Measurement and test procedures
  • Tests for correct measurement of a single radiation pulse even when the dosemeter is in a background-measurement state.
  • Consideration of pulse duration relative to detector dead time (t_pulse ≥ t_dead and t_pulse