Section 8.0: Compressed Gas & Cylinders

Introduction

Welding, cutting, and brazing processes are common to most worksites. Adequate safety measures must be taken to minimize the potential for hazards associated with this work.

Written procedures for the safe storage and handling of cylinders of compressed gases and training of personnel in safe use of compressed gas must be established.

Guide

8.1. Cylinders with unprotected valves can pose a serious hazard when the valve is impacted.  Cylinders have been known to break through concrete walls when their valves are broken.
8.2. Labels must be legible, written in the appropriate language(s), and prominently displayed on containers of hazardous chemicals, including all compressed gas cylinders.   Personnel training must include an explanation of the labeling system.
8.3. All flammable gas cylinders must be stored at least 25 feet from open flames or possible sources of ignition, in temperatures below 125oF, and away from contact with electrical apparatus.
8.4. All storage locations of cylinders must be properly selected, constructed, identified, marked with appropriate warning signs, and secured.
8.5. Cylinders must be stored in an upright position, and be properly stored to prevent tipping and/or falling.  Cylinders must be moved by a means of a suitable hand cart (or equivalent) with a chain or belt for securing the cylinder.  Cylinders should be transported in a vertical position.
8.6. It is important that the Liquid Petroleum Gas cylinders be stored or transported in a position so that the safety relief device is always in direct contact with the vapor space in the cylinder.  This is generally a vertical position.
8.7. The valve should be closed when not in use, being transported, or when empty.
8.8. Periodic inspection of compressed gas cylinders should be part of the site's compressed-gas written policies/procedures.  The inspection should focus on corrosion, general distortion, cracks, deep rust, leakage, or other defects.
8.9. Unapproved or makeshift compressed gas apparatuses must not be used.
8.10. Under no circumstances, should cylinders be used as rollers/supporters or other devices.
8.11. Stored oxygen cylinders must be separated from fuel sources and combustible materials.   It is recommended that oxygen cylinders be separated from fuel gas cylinders by a minimum distance of 20 feet or by a combustible barrier at least five feet high, having a fire resistance of at least one-half hour.
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Table of Contents

Introduction
Getting Started
Survey Checklists

Reference Guide

Appendix I
Sources of Information & Assistance

Appendix II
Forms

Appendix III
Review of Basic Fire Hazards

Appendix IV
Facility Survey

Appendix V
Selected NFPA Reference Codes

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