NATIONAL FOREWORD

This Indian Standard which is identical with ISO/TR 15916 : 2015 ‘Basic considerations for the safety of hydrogen systems’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Industrial Gases Sectional Committee and approval of the Chemical Division Council.

Hydrogen is not usually found naturally as a gas on earth, but is abundant in the form of compounds like water, hydrocarbons etc. The importance of hydrogen lies in the fact that it is a zero emission fuel, and hence, it is widely researched as an alternative to fossil fuels. Hydrogen end use applications include fuel cells, combustion reciprocating and turbine engines, burners, and all applications that use these components. Being a flammable gas, safety is of critical concern while handling hydrogen systems.

The text of ISO 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.