Reaffirmed 2021

NATIONAL FOREWORD

This Indian Standard (Part 4) (First Revision) which is identical with IEC 60761-4 : 2002 ‘Equipment for continuous monitoring of radioactivity in gaseous effluents — Part 4: Specific requirements for radioactive iodine monitors’ issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on recommendation of Electronic Measuring Instruments, Instrumentation Systems and Accessories Sectional Committee and approval of the Electronics and Information Technology Division Council.

This standard was originally published in 1989 which was Identical with IEC 60761- 4 : 1983 ‘Equipment for continuously monitoring radioactivity in gaseous effluents — Part 4: Specific requirements for radiaoactive iodine monitors’. The first revision of this standard has been undertaken to align it with the latest version of IEC 60761-4 : 2002.

This Indian Standard is published in four parts. The other parts in this series are:

Part 1 General requirements

Part 2 Specific requirements for radioactive aerosol monitors including transuranic aerosols

Part 3 Specific requirements for radioactive noble gas monitors

The text of IEC Standard may be approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.