Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › Construction Safety and Health Standard › Part 7 - WELDING AND CUTTING GENERAL PROVISIONS › CYLINDERS › Section R. 408.40723 - Cylinders generally

Current through Vol. 24-12, July 15, 2024
Rule 723.
(1)
						A chain, bracket, or other restraining device shall be used at all times to
						prevent cylinders from falling.
(2)
						A cylinder shall stand valve end up at all times.
(3) A cylinder shall not be dropped, dragged,
						rolled on its side, or struck violently.
(4) When using a crane or hoisting device, a
						cylinder shall be lifted only by cradles or enclosed platforms. An
						electromagnet, hook, rope, or sling shall not be used.
(5) A frozen or ice-clogged valve shall be
						thawed either by warm air or warm water and shall be dried before using.
						Boiling water or a flame shall not be used. Force shall not be applied to a
						valve or cap to loosen a cylinder frozen in place.
(6) Gases shall not be mixed within a
						cylinder except by the supplier. Only the owner of the cylinder, if the owner
						is qualified, or a person trained, qualified, and authorized by the owner,
						shall refill a cylinder. The contents of a cylinder shall be used only for
						those purposes intended by the supplier.
(7) A cylinder shall not be placed where it
						will become a part of the electrical circuit by accidental grounding or where
						it may be burned by an electric welding arc. A cylinder shall not be placed so
						that hot slag or flame can reach it unless the cylinder is protected by a
						fire-resistant shield. An electrode shall not be tapped against a cylinder to
						strike an arc.
(8) A regulator,
						gauge, or hose shall not be interchangeable between fuel gas, oxidizing gas, or
						inert gas. Connections for compressed gas cylinders shall be as prescribed in
						American National Standard Institute Standard ANSI/ASA B57.1, 1965 edition,
						"Compressed Gas Cylinder Valve Outlet and Inlet Connections," which is adopted
						by reference in
						R
						408.40709.
(9) A cylinder valve shall be opened slightly
						for an instant and then closed before connecting to a regulator or manifold to
						clear the valve of dust and dirt. The employee opening the valve shall stand to
						one side of the outlet, not in front of it. The employee shall not open the
						valve near a source of ignition. Pressure to a regulator shall be introduced by
						slowly opening the cylinder valve. An acetylene cylinder valve shall only be
						opened enough to allow proper working pressure, but shall not be opened more
						than 1 1/2 turns of the spindle.
(10) Acetylene shall not be utilized or
						piped, except in cylinder manifolds, at a pressure in excess of 15
						psig.
(11) A cylinder to which a
						regulator is attached shall not be moved unless secured to a hand or powered
						truck designed or equipped for this purpose.
(12) A cylinder valve must be closed in any
						of the following situations:
(a) When moving
						the cylinder.
(b) When the work is
						finished or is left unattended during the lunch period, overnight, or any other
						prolonged period.
(c) When the
						cylinder is empty.
(d) When the
						regulator is removed.