IEC 62302 : 1.0

RADIATION PROTECTION INSTRUMENTATION - EQUIPMENT FOR SAMPLING AND MONITORING RADIOACTIVE NOBLE GASES

International Electrotechnical Committee

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FOREWORD
1 Scope and object
2 Normative references
3 Terms and definitions
4 Classification of noble gas monitoring equipment
   4.1 General Design Considerations
   4.2 Capability for operational testing
   4.3 Adjustment and maintenance facilities
   4.4 Acoustic noise level of the assembly
   4.5 Electromagnetic interference
   4.6 Mechanical shock
   4.7 Measurement characteristics
5 Equipment components
   5.1 General
   5.2 Sampling assembly
   5.3 Detection assembly
   5.4 Control assembly
   5.5 Indication facilities
   5.6 Alarm assembly
   5.7 Check and 'keep alive' sources
   5.8 Ambient background shielding or compensation devices
   5.9 Batteries
6 Test conditions
   6.1 General test procedures
   6.2 Tests performed under standard test conditions for
        normal operation condition
   6.3 Tests performed with variation of influence quantities
   6.4 Tests performed under test conditions for emergency
        conditions
   6.5 Types of sources
   6.6 Metrological confirmation system during tests
7 Radiation detection performance tests
   7.1 Reference response
   7.2 Linearity
   7.3 Response to radioactive gases other than radioactive
        noble gases
   7.4 Response time
   7.5 Response to ambient gamma radiation
   7.6 Response to neutron radiation
   7.7 Overload test
   7.8 Statistical fluctuations
   7.9 Zero stability
   7.10 Reproducibility of the response
8 Electrical, electronic and mechanical tests
   8.1 Alarm trip range
   8.2 Alarm trip stability
   8.3 Equipment fault alarm system
   8.4 Warm-up time - Detection and measurement assembly
   8.5 Power supply variations
   8.6 Battery test
   8.7 Power supply transient effects
9 Air circuit performances test
   9.1 General
   9.2 Susceptibility to gaseous retention
   9.3 Accuracy of the volume and flow rate measurement
   9.4 Flow-rate stability
   9.5 Effect of filter pressure drop
   9.6 Effect of power supply voltage on the flow rate
   9.7 Effect of power supply frequency on flow rate
10 Environmental performance tests
   10.1 Ambient temperature
   10.2 Temperature shock for portable and transportable
        assemblies
   10.3 Relative humidity
   10.4 Atmospheric pressure
   10.5 Sealing
   10.6 Mechanical shocks
   10.7 External electromagnetic immunity and electrostatic
        discharge
   10.8 Electromagnetic emission
11 Type test report and Certificate
12 Operation and maintenance manual
Annex A (informative) Preparation of radioactive gas reference
        sources

Abstract

Applicable to equipment used for sampling and continuous measurement of radioactive noble gases in the workplace, in gaseous effluents discharged into the environment as well as in the environment itself.