Reaffirmed 2021

NATIONAL FOREWORD

This Indian Standard (Part 1) (First Revision) which is identical with IEC 60761-1 : 2002 ‘Equipment for continuous monitoring of radioactivity in gaseous effluents Part 1 : General requirements’ issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendations of the 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 60761-1 : 1983, ‘Equipment for continuous monitoring radioactivity in gaseous effluents Part 1: General requirements’. The first revision of this standard has been undertaken to align it with the latest version of IEC 60761-1 : 2002.

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

Part 2 Specific requirements for aerosol effluent monitors

Part 3 Specific requirements for noble gas effluent monitors

Part 4 Specific requirements for radioactive iodine monitors

The text of the IEC standard has been 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.

c) There are modifications for the values of standard ambient temperature, standard test conditions for ambient temperature, standard test conditions for power supply voltage and standard testing conditions for AC power supply frequency which are explained in National Annex A.