IEC 60405:2003

FOREWORD
INTRODUCTION
1 Scope and object
2 Normative references
3 Definitions
4 Classification of radiometric gauge types
   4.1 Category A: Radiometric gauges with restricted beam
   4.2 Category B: radiometric gauges with omnidirectional beam
   4.3 Radiation protection classes
   4.4 Temperature class
5 General requirements
   5.1 Measuring gap
   5.2 Source holder
   5.3 Source housing
   5.4 Alignment of the useful beam
   5.5 Other requirements
6 Protection against ionizing radiation
   6.1 General requirements
   6.2 Requirements for Category A gauges
   6.3 Requirements for Category B gauges
   6.4 Resistance of the source housing in case of fire
   6.5 Detector housing
   6.6 Measuring head
7 Other safety devices
   7.1 General
   7.2 Protection against non-authorized use
   7.3 Indication of the shutter position
   7.4 Additional warning device
8 Determination of the dose equivalent rate
   8.1 General
   8.2 Dose equivalent rate measurements in the case of
        closed shutters
   8.3 Dose equivalent rate measurements in the case of
        open shutters
   8.4 Procedure for dose equivalent rate measurements
   8.5 Determining the relevant values of the dose equivalent
        rate
9 Test methods
   9.1 General
   9.2 Temperature cycle test on the shutters and the source
        holder
   9.3 Test for checking the resistance of the shutter and the
        source holder in case of fire
   9.4 Test for checking the mechanical resistance of the
        shutter and the source holder
10 System classification coding and labelling
   10.1 Classification code
   10.2 Labelling
11 Accompanying documents
Figures
Tables

Specifies constructional requirements for the design of instruments and the radiation protection to be provided in the case of radiometric gauges. Special attention is drawn to the stability of the source housing in the event of fire.