Locate or secure cylinders so they cannot be knocked over.
Passageways and work areas. Keep cylinders clear of areas where they may be struck.
Transporting cylinders. With a crane, use a secure sup- port such as a platform or cradle. Do NOT lift cylinders off the ground by their valves or caps, or by chains, slings, or magnets.
Do NOT expose cylinders to excessive heat, sparks, slag, and flame, etc. that may cause rupture. Do not al- low contents to exceed 130°F. Cool with water spray where such exposure exists.
Protect cylinders particularly valves from bumps, falls, falling objects, and weather. Replace caps securely when moving cylinders.
Stuck valve. Do NOT use a hammer or wrench to open a cylinder valve that can not be opened by hand. Notify your supplier.
Mixing gases. Never try to mix any gases in a cylinder.
Never refill any cylinder.
Cylinder fittings should never be modified or ex- changed.
3.Hose
Prohibited use. Never use hose other than that de- signed for the specified gas. A general hose identifica- tion rule is: red for fuel gas, green for oxygen, and black for inert gases.
Use ferrules or clamps designed for the hose (not ordi- nary wire or other substitute) as a binding to connect hoses to fittings.
No copper tubing splices. Use only standard brass fit- tings to splice hose.
Avoid long runs to prevent kinks and abuse. Suspend hose off ground to keep it from being run over, stepped on, or otherwise damaged.
Coil excess hose to prevent kinks and tangles.
Protect hose from damage by sharp edges, and by sparks, slag, and open flame.
Examine hose regularly for leaks, wear, and loose con- nections. Immerse pressured hose in water; bubbles in- dicate leaks.
Repair leaky or worn hose by cutting area out and splic- ing
4.Proper Connections
Clean cylinder valve outlet of impurities that may clog orifices and damage seats before connecting regulator. Except for hydrogen, crack valve momentarily, pointing
outlet away from people and sources of ignition. Wipe with a clean lintless cloth.
Match regulator to cylinder. Before connecting, check that the regulator label and cylinder marking area, and that the regulator inlet and cylinder outlet match. NEVER CONNECT a regulator designed for a particular gas or gases to a cylinder containing any other gas.
Tighten connections. When assembling threaded con- nections, clean and smooth seats where necessary. Tighten. If connection leaks, disassemble, clean, and retighten using properly fitting wrench.
Adapters. Use a CGA adapter (available from your sup- plier) between cylinder and regulator, if one is required. use two wrenches to tighten adapter marked RIGHT and LEFT HAND threads.
Regulator outlet (or hose) connections may be identified by right hand threads for oxygen and left hand threads (with grooved hex on nut or shank) for fuel gas.
5.Pressurizing Steps:
Drain regulator of residual gas through suitable vent be- fore opening cylinder (or manifold valve) by turning ad- justing screw in (clockwise). Draining prevents exces- sive compression heat at high pressure seat by allowing seat to open on pressurization. Leave adjusting screw engaged slightly on
Stand to side of regulator while opening cylinder valve.
Open cylinder valve slowly so that regulator pressure in- creases slowly. When gauge is pressurized (gauge reaches regulator maximum) leave cylinder valve in fol- lowing position: For oxygen, and inert gases, open fully to seal stem against possible leak. For fuel gas, open to less than one turn to permit quick emergency shutoff.
Use pressure charts (available from your supplier) for safe and efficient, recommended pressure settings on regulators.
Check for leaks on first pressurization and regularly
E. User Responsibilities
Remove leaky or defective equipment from service im- mediately for repair. See User Responsibility statement in equipment manual.
F.Leaving Equipment Unattended
Close gas supply at source and drain gas.
G. Rope Staging-Support
Rope
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