CGA G 4.4 : 2012

1 Introduction
2 Scope and purpose
3 Definitions
4 Design philosophy
5 Piping, valves, and equipment
6 Cleaning
7 Construction
8 Design and construction of control stations
9 Operation, monitoring, and maintenance
10 General protective measures
11 References
12 Additional references
Appendix A - Description of promoted ignition
             combustion test method (Informative)
Appendix B - Potential ignition mechanisms
             (Informative)
Appendix C - Table of nominal alloy compositions
             and ranges (Normative)
Appendix D - Table of exemption pressures and
             minimum thicknesses (Normative)
Appendix E - Table of minimum safety distances
             (without barriers) for oxygen control and
             isolating/metering stations (Informative)
Appendix F - Example of preventive maintenance
             program (Normative)