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• Tanks containing liquified petroleum (LP) gas are separated from combustible <br />and flammable materials by at least 10 feet. <br />• "No Smoking" and "Keep Fire Away" signs (or equivalent) are posted and no <br />smoking or open flames are allowed within 25 feet of a tank holding less than <br />1,200 gallons, and 50 feet of a tank holding more than 1,200 gallons of a <br />flammable or combustible material or waste. <br />3. Welding and Cutting Operations <br />• A fire extinguisher or hose is available where a torch is used inside buildings. <br />• A fire watch is conducted for one 1/2 -hour after a torch is used, or after <br />cutting or welding is performed. <br />• No welding or cutting is performed on tanks, drums, or other containers that <br />have contained flammable liquids unless they have been thoroughly purged <br />and tested inside with a combustible gas detector. <br />• The area surrounding the cutting or welding operation is free of all flammable <br />or combustible materials, liquids, or vapors, lint, and dust. <br />• Cylinders, piping, valves, regulators, and hoses are prevented from coming in <br />contact with oil and oily substances. <br />• Cylinders in use are placed far enough away from welding to avoid heat by <br />radiation from heated materials, sparks, or slag. <br />• All cylinders in use have a pressure -regulating device. <br />• Hoses are regularly inspected for leaks, burns, tears, loose connections, and <br />other defects. Where two hoses are joined by a web, they are of different <br />colors or textures. <br />4. Vehicle Fueling Operations <br />• Motor vehicles are fueled only with approved pumps from portable or <br />underground tanks, or from approved 1-5 gallon safety containers. Open <br />containers are never used. <br />• No smoking or open flames are allowed in the area, and permanent fueling <br />stations are posted with "No Smoking" and other appropriate warning signs. <br />• All vehicle engines are shut off during fueling operations. <br />• The manually -operated pump master switch is located 15 to 75 feet from <br />permanent fueling stations and is labeled "EMERGENCY PUMP SHUTOFF." <br />4-3 <br />