18 Free standingcylindersExposed to damageFrom constructionActivities in area
19 What a pressurizedContainer can doWhen the right amountof heat is applied.
20 How not to blow yourself up Or, the importance of using flashbackarrestors on oxy-acetylene carts andkeeping spark producing activitiesAway From You (min 35 ft.).
21 An Ironworker crew was modifying a temporary structural steel bridge using an Oxygen/Acetylene torch setup on a cart, a portable welder,and a grinder. Apparently the Acetylene hose developed a leak andignited during the grinding operation (Monday June 18, 2001)
22 The torch setup was not equipped with a “flashback” arrestor check valve and the fire traveled through the hose into thecompressed cylinder.All Oxygen/Acetylene setups musthave a “Flashback” arrestor checkvalve at the regulators, NOT thetorch head, to prevent this typeof occurrence. This little device wouldhave prevented this fire.
23 30 CFR § 56.4600 Extinguishing equipment. WELDING/CUTTING/COMPRESSED GASES (a) When welding, cutting, soldering, thawing, or bending(1) With an electric arc or with an open flame where an electrically conductive extinguishing agent could create an electrical hazard, a multipurpose dry-chemical fire extinguisher or other extinguisher with at least a 2-A:10-B:C rating shall be at the worksite.(2) With an open flame in an area where no electrical hazard exists, a multipurpose dry-chemical fire extinguisher or equivalent fire extinguishing equipment for the class of fire hazard present shall be at the worksite.
24 30 CFR § 56.4601 Oxygen cylinder storage. Oxygen cylinders shall not be stored in rooms or areas used or designated for storage of flammable or combustible liquids, including grease.
25 30 CFR § 56.4602 Gauges and regulators. Gauges and regulators used with oxygen or acetylene cylinders shall be kept clean and free of oil and grease.
26 30 CFR §Closure of valves.To prevent accidental release of gases from hoses and torches attached to oxygen and acetylene cylinders or to manifold systems, cylinder or manifold system valves shall be closed when (a) The cylinders are moved; (b) The torch and hoses are left unattended; or (c) The task or series of tasks is completed.
27 30 CFR §Protective equipment or clothing for welding, cutting, or working with molten metal.Protective clothing or equipment and face shields, or goggles shall be worn when welding, cutting, or working with molten metal.
28 30 CFR § 56.16005 Securing gas cylinders. Compressed and liquid gas cylinders shall be secured in a safe manner.
29 30 CFR § 56.16006 Protection of gas cylinder valves. Valves on compressed gas cylinders shall be protected by covers when being transported or stored, and by a safe location when the cylinders are in use.