scope:

This publication documents the minimum recommendations for the safe preparation of compressed oxidant-fuel gas mixtures in cylinders by static methods (addition of one component after another in cylinders). The publication specifically addresses:

- key principles for compressed oxidant-fuel gas mixture manufacture;

- manufacturing feasibility studies;

- gas mixing equipment, filling and analysis; and

- audit of oxidant-fuel gas mixture manufacturing procedures and operations.

This publication specifically describes the manufacture of compressed oxidant-fuel gas mixtures under the conditions of gas temperatures and pressures detailed within this publication. The manufacture of liquefied and liquid oxidant-fuel gas mixtures and the manufacture of compressed oxidant-fuel gas mixture by dynamic methods (filling into the cylinder by blending the components dynamically at calculated flow rates) are outside of the scope of this publication.

This publication shall be used in conjunction with the information and principles contained in CGA P-36, The Safe Preparation of Gas Mixtures.

Purpose

The purpose of the publication is to describe practices to be used for the safe preparation of compressed oxidant- fuel gas mixtures and to ensure that they are nonexplosive at the end of the manufacture.

- The safe formulation of compressed oxidant-fuel gas mixture by trained and competent personnel.

- Defined safety considerations which are applied and maintained during the manufacturing process.

- An overall quality system with formally approved documented procedures shall be used for manufacture and these procedures and practices shall be subject to the regular technical review and audit by technical experts independent of the routine production process.