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■ Gas cylinders must be kept free from oil or grease Use of oil or grease as a <br /> lubricant for valves or attachments is prohibited <br /> ■ Smoking or flame is prohibited near gas cylinders or outlets <br /> e Mixing gases in cylinders, refilling cylinders, or using cylinders for any use except <br /> their original purpose is prohibited <br /> ■ Hoses must never be hung from regulators, other equipment or the cylinder tops <br /> ■ Cylinder valves shall be closed when work is finished and when cylinders are <br /> empty or are moved <br /> ■ Compressed gas cylinders shall be secured (roped or chained), in an upright <br /> I position at all times, except when cylinders are actually being hoisted or carried <br /> J <br /> ■ Pressure regulators shall be in proper working order while in use <br /> ■ Field adjustment or repair of gauges, valves, accessories, or safety devices is <br /> prohibited <br /> ■ If a leak develops in a gas cylinder, it shall be immediately removed to a safe <br /> location in the open air If the leak cannot be corrected, it shall be reported to <br /> the Project Safety Officer <br /> ■ Cylinders shall be permanently marked or stenciled to identify the type of gas in <br /> the cylinder <br /> 103 Wel_ding and Cutting <br /> 10 3 1 General <br /> z Only trained employees, whose regular duties as assigned by their supervisors <br /> include welding and cutting, will perform this work <br /> ■ Only standard, approved, equipment will be used <br /> M Fire extinguishers will be easily accessible to all employees performing welding <br /> or cutting operations <br /> ■ Screens or shields will be provided for the protection of persons or combustible <br /> material exposed to sparks or falling objects, where necessary, a fire-watch will <br /> be posted and an adequate extinguisher and signaling device will be available at <br /> the work site <br /> 1 <br /> 1 19 <br /> 10-6 REV 4/92-EGI <br /> Mr <br />