The provisions of this section shall apply to ship repairing, shipbuilding and shipbreaking.
Transporting, moving and storing compressed gas cylinders.
Valve protection caps shall be in place and secure. Oil shall not be used to lubricate protection
When cylinders are hoisted, they shall be secured on a cradle, slingboard or pallet. They shall not
be hoisted by means of magnets or choker slings.
Cylinders shall be moved by tilting and rolling them on their bottom edges. They shall not be
intentionally dropped, struck, or permitted to strike each other violently.
When cylinders are transported by vehicle, they shall be secured in position.
Valve protection caps shall not be used for lifting cylinders from one vertical position to another.
Bars shall not be used under valves or valve protection caps to pry cylinders loose when frozen. Warm, not boiling, water shall be used to thaw
Unless cylinders are firmly secured on a special carrier intended for this purpose, regulators shall
be removed and valve protection caps put in place before cylinders are moved.
A suitable cylinder truck, chain, or other steadying device shall be used to keep cylinders from
being knocked over while in use.
When work is finished, when cylinders are empty or when cylinders are moved at any time, the
cylinder valves shall be closed.
Acetylene cylinders shall be secured in an upright position at all times except, if necessary, for
short periods of time while cylinders are actually being hoisted or carried.
Cylinders shall be kept far enough away from the actual welding or cutting operation so that sparks,
hot slag or flame will not reach them. When this is impractical, fire resistant shields shall be provided.
Cylinders shall be placed where they cannot become part of an electrical circuit. Electrodes shall
not be struck against a cylinder to strike an arc.
Fuel gas cylinders shall be placed with valve end up whenever they are in use. They shall not be
placed in a location where they would be subject to open flame, hot metal, or other sources of artificial heat.
Cylinders containing oxygen or acetylene or other fuel gas shall not be taken into confined
Treatment of cylinders.
Cylinders, whether full or empty, shall not be used as rollers or supports.
No person other than the gas supplier shall attempt to mix gases in a cylinder. No one except the
owner of the cylinder or person authorized by him shall refill a cylinder. No one shall use a cylinder's contents for purposes other than those
intended by the supplier. Only cylinders bearing Interstate Commerce Commission identification and inspection markings shall be used.
No damaged or defective cylinder shall be used.
Use of fuel gas. The employer shall thoroughly instruct employees in the safe use of fuel gas, as
Before connecting a regulator to a cylinder valve, the valve shall be opened slightly and closed
immediately. (This action is generally termed "cracking" and is intended to clear the valve of dust or dirt that might otherwise enter the regulator.)
The person cracking the valve shall stand to one side of the outlet, not in front of it. The valve of a fuel gas cylinder shall not be cracked where
the gas would reach welding work, sparks, flame or other possible sources of ignition.
The cylinder valve shall always be opened slowly to prevent damage to the regulator. To permit quick
closing, valves on fuel gas cylinders shall not be opened more than 1 1/2 turns. When a special wrench is required, it shall be left in position on
the stem of the valve while the cylinder is in use so that the fuel gas flow can be shut off quickly in case of an emergency. In the case of
manifolded or coupled cylinders, at least one such wrench shall always be available for immediate use. Nothing shall be placed on top of a fuel gas
cylinder, when in use, which may damage the safety device or interfere with the quick closing of the valve.
Fuel gas shall not be used from cylinders through torches or other devices which are equipped with
shut-off valves without reducing the pressure through a suitable regulator attached to the cylinder valve or manifold.
Before a regulator is removed from a cylinder valve, the cylinder valve shall always be closed and
the gas released from the regulator.
If, when the valve on a fuel gas cylinder is opened, there is found to be a leak around the valve
stem, the valve shall be closed and the gland nut tightened. If this action does not stop the leak, the use of the cylinder shall be discontinued, and
it shall be properly tagged and removed from the vessel. In the event that fuel gas should leak from the cylinder valve rather than from the valve
stem and the gas cannot be shut off, the cylinder shall be properly tagged and removed from the vessel. If a regulator attached to a cylinder valve
will effectively stop a leak through the valve seat, the cylinder need not be removed from the vessel.
If a leak should develop at a fuse plug or other safety device, the cylinder shall be removed from
Fuel gas and oxygen manifolds.
Fuel gas and oxygen manifolds shall bear the name of the substance they contain in letters at least
one (1) inch high which shall be either painted on the manifold or on a sign permanently attached to it.
Fuel gas and oxygen manifolds shall be placed in safe and accessible locations in the open air. They
shall not be located within enclosed spaces.
Manifold hose connections, including both ends of the supply hose that lead to the manifold, shall
be such that the hose cannot be interchanged between fuel gas and oxygen manifolds and supply header connections. Adapters shall not be used to permit
the interchange of hose. Hose connections shall be kept free of grease and oil.
When not in use, manifold and header hose connections shall be capped.
Nothing shall be placed on top of a manifold, when in use, which will damage the manifold or
interfere with the quick closing of the valves.
Fuel gas hose and oxygen hose shall be easily distinguishable from each other. The contrast may be
made by different colors or by surface characteristics readily distinguishable by the sense of touch. Oxygen and fuel has hoses shall not be
interchangeable. A single hose having more than one gas passage, a wall failure of which would permit the flow of one gas into the other gas passage,
shall not be used.
When parallel sections of oxygen and fuel gas hose are taped together not more than 4 inches out of
8 inches shall be covered by tape.
All hose carrying acetylene, oxygen, natural or manufactured fuel gas, or any gas or substance which
may ignite or enter into combustion or be in any way harmful to employees, shall be inspected at the beginning of each shift. Defective hose shall be
removed from service.
Hose which has been subjected to flashback or which shows evidence of severe wear or damage shall be
tested to twice the normal pressure to which it is subject, but in no case less than two hundred (200) psi. Defective hose or hose in doubtful
condition shall not be used.
Hose couplings shall be of the type that cannot be unlocked or disconnected by means of a straight
pull without rotary motion.
Boxes used for the stowage of gas hose shall be ventilated.
Clogged torch tip openings shall be cleaned with suitable cleaning wires, drills or other devices
designed for such purpose.
Torches shall be inspected at the beginning of each shift for leaking shutoff valves, hose
couplings, and tip connections. Defective torches shall not be used.
Torches shall be lighted by friction lighters or other approved devices, and not by matches or from
Pressure regulators. Oxygen and fuel gas pressure regulators including their related gauges shall be in
proper working order while in use.