IEC 60951-3:2009

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Design principles
  4.1 General
  4.2 Range of measurement
  4.3 Accuracy (relative error)
  4.4 Location of sensors
  4.5 Detector radiation response characteristics
  4.6 Requirements related to accident conditions
5 Functional testing
  5.1 General
  5.2 Reference sources
      5.2.1 General
      5.2.2 Gamma
      5.2.3 Beta
      5.2.4 Neutron
  5.3 Performance characteristics
      5.3.1 Reference response
      5.3.2 Sensitivity and relative response for solid
            sources
      5.3.3 Variation of response with angle of incidence

IEC 60951-3:2009 provides general guidance on the design principles and performance criteria for equipment for continuous high range area gamma monitoring in nuclear power plants for accident and post-accident conditions. General requirements for technical characteristics, test procedures, radiation characteristics, electrical, mechanical, and environmental characteristics are given in IEC 60951-1. These requirements are applicable in this part unless otherwise stated. The main technical changes with regard to the previous edition are as follows:
- clarify the definitions;
- up-date the references to new standards published since the first edition;
- update the units of radiation.

This publication is to be read in conjunction with IEC 60951-1:2009.