Document daX2r74RregmL8Ok00Zkxb6eG

be removed to a safe location, covered with llre-retardant material, or pro tected by containing all sparks and slag in a spark catcher approved by the Contract Administrator. c. A "2A. 40BC". as a minimum. I'L rated fully charged fire extinguisher must be provided by the Contractor and be within 30 feet of any welding, burning, or open-flame work. Person nel must know how to operate the tire extinguisher. d. Do not run hoses and welding leads through doorways. If there is no alter native. the door must be braced open, and the hoses and leads protected from damage tContract Administrator ap proval required). e. No welding or burning shall be done on a closed vessel or tank, or on any vessel previously in use unless it has been decontaminated and approval is given by the Contract Administrator. f. Welding leads and burning hose must be bridged over, or supported a min imum of 616 feet above passageways. Do not hang from conduit, process lines, sprinkler lines, etc. g. Inspect all leads, grounds, clamps, welding machines, hoses, gauges, torches, and cylinders before use. h. All fittings, couplings, and connections must be "leak-free". i. Ventilation must be adequate for the material being welded or burned. - 42 - 2. Welding--Electric a. All work must have a separate and adequate ground, pulled from the machine to the work location b. Remove th'e rod from the electrode holder when laying it down Discard the stub end in proper container c. Shield all arcs and post warning -igns in operating areas. d. Turn the machine off at the end ot each workday, or when not in use tor ex tended periods. e. Wear an approved welding helmet L *e no less than a No. 9 tiller, w ith a plastic cover plate on both sides ot the filter f. Electric welding is prohibited tn'm a ' metal ladder. 3. Burning--Gas a. All burning ngs must be broken down prior to vehicular transporting, auh regulators removed and protective caps screwed down hand-tight. b. Compressed gas cylinders must `'e secured vertically to an adequate sup port. The protective cap must be >n while not in use and during transit \il cylinders must be kept outside -per ating buildings unless spectlic per mission is granted by the G-nira^t Administrator. c. Keep oil and grease away from cen regulators, hoses, and fittings P>> n.u store wrenches, dies, cutlers. ->r iner grease-covered tools in the same mpartment with oxygen equipment -43 - DUI> 09 I I OG3