SN EN 60731 : 1997

Foreword
Introduction
1 Scope and object
2 Normative references
3 Terminology and definitions
4 General requirements
    4.1 Performance requirements
    4.2 REFERENCE VALUES and STANDARD TEST VALUES
    4.3 General test conditions and methods
         4.3.1 STANDARD TEST CONDITIONS
         4.3.2 Test of components
         4.3.3 RATED or EFFECTIVE RANGE of DOSE
                (or KERMA) RATES
         4.3.4 Uncertainty of measurement
         4.3.5 Adjustments during test
         4.3.6 Test conditions particular to CHAMBER ASSEMBLIES
         4.3.7 Test conditions particular to MEASURING ASSEMBLIES
         4.3.8 Test conditions particular to STABILITY
                CHECK DEVICES
         4.3.9 Use of STABILITY CHECK DEVICES
    4.4 Summary tables
    4.5 Classification of equipment according to LIMITS OF
         VARIATION
         4.5.1 FIELD-CLASS DOSIMETER
         4.5.2 REFERENCE-CLASS DOSIMETER
5 CHAMBER ASSEMBLY performance requirements
    5.1 General performance requirements for (RADIOTHERAPY)
         IONIZATION CHAMBERS
         5.1.1 CHAMBER ASSEMBLY LEAKAGE CURRENT without
                irradiation
         5.1.2 Stability
         5.1.3 STABILIZATION TIME
         5.1.4 Post-irradiation leakage
         5.1.5 RATED or EFFECTIVE RANGE of DOSE RATE
                (continuous radiation)
         5.1.6 Maximum RATED DOSE per pulse (pulsed
                radiation)
         5.1.7 STRAY RADIATION
         5.1.8 Guard/collector insulation
         5.1.9 Cable microphony
         5.1.10 Polarity of polarizing voltage effect
         5.1.11 Electromagnetic compatibility
         5.1.11 Electromagnetic compatibility
    5.2 Performance requirements particular to SHELL
         CHAMBERS
         5.2.1 Dependence on radiation quality
         5.2.2 RATED RANGE of field sizes
         5.2.3 CHAMBER orientation
    5.3 Performance requirements particular to PARALLEL-PLATE CHAMBERS
         5.3.1 Dependence on radiation quality
         5.3.2 RATED RANGE of field sizes
         5.3.3 CHAMBER orientation
    5.4 Performance requirements particular to VENTED
         CHAMBERS
         5.4.1 Atmospheric pressure change
         5.4.2 Temperature
         5.4.3 Humidity
    5.5 Performance requirements particular to
         SEALED CHAMBERS
         5.5.1 Atmospheric pressure change
         5.5.2 Temperature
6 MEASURING ASSEMBLY performance requirements
    6.1 General performance requirements for (RADIOTHERAPY)
         DOSIMETERS
         6.1.1 EFFECTIVE RANGES
         6.1.2 RESOLUTION of the display
         6.1.3 Repeatability
         6.1.4 Long-term stability
         6.1.5 STABILIZATION TIME
         6.1.6 Electromagnetic compatibility
    6.2 Performance requirements particular to DOSIMETERS
         6.2.1 ZERO DRIFT
         6.2.2 ZERO SHIFT
         6.2.3 NON-LINEARITY
         6.2.4 Range changing
         6.2.5 Dead time
         6.2.6 Temperature
         6.2.7 Humidity
         6.2.8 STRAY RADIATION effect
         6.2.9 Charge leakage
         6.2.10 DOSE RATE dependence of DOSIMETERS
    6.3 Performance requirements particular to DOSE RATE
         meters
         6.3.1 ZERO DRIFT
         6.3.2 ZERO SHIFT
         6.3.3 NON-LINEARITY
         6.3.4 Range changing
         6.3.5 RESPONSE TIME
         6.3.6 Temperature
         6.3.7 Humidity
         6.3.8 STRAY RADIATION effect
    6.4 Performance requirements particular to battery-
         operated MEASURING ASSEMBLIES
         6.4.1 Operating battery life
    6.5 Performance requirements particular to supply
         mains-operated MEASURING ASSEMBLIES
         6.5.1 Mains voltage - static
         6.5.2 Mains voltage - variation during a measurement
7 STABILITY CHECK DEVICE performance requirements
    7.1 General performance requirements for STABILITY
         CHECK DEVICES
         7.1.1 Long-term stability
         7.1.2 Repeatability
8 Constructional requirements as related to PERFORMANCE
    CHARACTERISTICS
    8.1 Constructional requirements on CHAMBER ASSEMBLIES
    8.2 Constructional requirements on MEASURING
         ASSEMBLIES
         8.2.1 Adjustment of RESPONSE
         8.2.2 Display device
         8.2.3 Battery indication and compensation
         8.2.4 Input current threshold
         8.2.5 Automatic termination of measurement in
                 the DOSE mode
    8.3 Constructional requirements on STABILITY CHECK DEVICES
         8.3.1 General constructional requirements on
                 STABILITY CHECK DEVICES
         8.3.2 Constructional requirements particular to
                 a radioactive type STABILITY CHECK DEVICES
         8.3.3 Constructional requirements particular to
                 an overall STABILITY CHECK DEVICES
    8.4 Constructional requirements on PHANTOMS and build-up caps
         8.4.1 PHANTOMS
9 Marking
    9.1 Marking required on CHAMBER ASSEMBLY
    9.2 Marking required on MEASURING ASSEMBLY
    9.3 Marking required on STABILITY CHECK DEVICES
    9.4 Marking required on PHANTOM or build-up cap
10 ACCOMPANYING DOCUMENTS
    10.1 ACCOMPANYING DOCUMENTS for CHAMBER ASSEMBLY
         10.1.1 INSTRUCTION FOR USE of CHAMBER ASSEMBLY
         10.1.2 Test sheet for CHAMBER ASSEMBLY
         10.1.3 Calibration certificate for CHAMBER ASSEMBLY
    10.2 ACCOMPANYING DOCUMENTS for MEASURING ASSEMBLY
         10.2.1 Instructions for use of MEASURING ASSEMBLY
         10.2.2 Test sheet for MEASURING ASSEMBLY
         10.2.3 Calibration certificate for MEASURING ASSEMBLY
    10.3 ACCOMPANYING DOCUMENTS for STABILITY CHECK DEVICE
         10.3.1 INSTRUCTIONS FOR USE of STABILITY CHECK DEVICE
         10.3.2 Test sheet for STABILITY CHECK DEVICE
         10.3.3 Measurement certificate for STABILITY
                 CHECK DEVICE
    10.4 ACCOMPANYING DOCUMENTS for PHANTOMS and build-up
         caps
         10.4.1 INSTRUCTIONS FOR USE of PHANTOMS and build-up caps
Annex A (normative) Uncertainty of measurements
Annex B (informative) Bibliography
Annex C (informative) Alphabetical index of defined terms
Annex ZA (normative) Normative references to international
    publications with their corresponding European publications
Figures
Tables

Defines performance requirements of RADIOTHERAPY DOSIMETERS as intended for measuring absorbed dose to water or air kerma (and their rates) in photon or electron radiation fields as used in radiotherapy.