Natural gas. Measurement of properties. Calorific value and Wobbe index Ingestion-build-239834 This European Standard does not

This European Standard does not state all applicable requirements for integral equipments of other nature (for example burners covered by EN 484)

Summary of key changes between OHSAS 18001:2007 and OHSAS 18001:1999

The duplicate determination has been changed to a single determination

Limits for holes and shafts

Revision of terms and definitions

Natural gas. Measurement of properties. Calorific value and Wobbe index Ingestion-build-239834 This European Standard does not1 Scope This International Standard concerns the measurement of calorific value of natural gas and natural gas substitutes by non separative methods, i. e. methods that do not involve the determination of the gas composition nor calculation from it. It describes the principles of operation of a variety of instruments in use for this purpose, and provides guidelines for the selection, evaluation, performance assessment, installation and operation of