ICS 29.260.20                         ETD 22

New Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 40) which is identical with IEC TS 60079-40 : 2015 ‘Explosive atmospheres - Part 40: Requirements for process sealing between flammable process fluids and electrical systems’ issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on recommendation of the Electrical Apparatus for Explosive Atmospheres Sectional Committee and approval of the Electrotechnical Division Council.

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.