Lincoln Electric IM958 manual Electric Shock can ARC Rays can burn Kill, Fumes and Gases

ii		SAFETY				ii
		ELECTRIC SHOCK can			ARC RAYS can burn.
		kill.			plates to protect your eyes from sparks and
		3.a. The electrode and work (or ground) circuits			4.a. Use a shield with the proper filter and cover
					the rays of the arc when welding or observing
		are electrically “hot” when the welder is on.
		Do not touch these “hot” parts with your bare			open arc welding. Headshield and filter lens
		skin or wet clothing. Wear dry, hole-free			should conform to ANSI Z87. I standards.
		gloves to insulate hands.	4.b. Use suitable clothing made from durable flame-resistant
3.b. Insulate yourself from work and ground using dry insulation.					material to protect your skin and that of your helpers from
					the arc rays.
	Make certain the insulation is large enough to cover your full
	area of physical contact with work and ground.		4.c. Protect other nearby personnel with suitable, non-flammable
	In addition to the normal safety precautions, if welding				screening and/or warn them not to watch the arc nor expose
					themselves to the arc rays or to hot spatter or metal.
	must be performed under electrically hazardous
					FUMES AND GASES
	scaffolds; when in cramped positions such as sitting,
	conditions (in damp locations or while wearing wet
	clothing; on metal structures such as floors, gratings or				can be dangerous.
	kneeling or lying, if there is a high risk of unavoidable or
	accidental contact with the workpiece or ground) use				5.a. Welding may produce fumes and gases
	the following equipment:				hazardous to health. Avoid breathing these
	• Semiautomatic DC Constant Voltage (Wire) Welder.				fumes and gases. When welding, keep
	• DC Manual (Stick) Welder.				your head out of the fume. Use enough
	• AC Welder with Reduced Voltage Control.				ventilation and/or exhaust at the arc to keep
3.c. In semiautomatic or automatic wire welding, the electrode,				fumes and gases away from the breathing zone.		When
				welding with electrodes which require special
	electrode reel, welding head, nozzle or semiautomatic			ventilation such as stainless or hard facing (see
	welding gun are also electrically “hot”.			instructions on container or MSDS) or on lead or
3.d. Always be sure the work cable makes a good electrical				cadmium plated steel and other metals or coatings
				which produce highly toxic fumes, keep exposure as
	connection with the metal being welded. The connection			low as possible and below Threshold Limit Values (TLV)
	should be as close as possible to the area being welded.			using local exhaust or mechanical ventilation. In
3.e. Ground the work or metal to be welded to a good electrical				confined spaces or in some circumstances, outdoors, a
				respirator may be required. Additional precautions are
3.f.	(earth) ground.			also required when welding on galvanized steel.
	Maintain the electrode holder, work clamp, welding cable and		5. b. The operation of welding fume control equipment is affected
	welding machine in good, safe operating condition. Replace				by various factors including proper use and positioning of
	damaged insulation.				the equipment, maintenance of the equipment and the spe-
					cific welding procedure and application involved.	Worker
3.g. Never dip the electrode in water for cooling.					exposure level should be checked upon installation and
					periodically thereafter to be certain it is within applicable
3.h. Never simultaneously touch electrically “hot” parts of					OSHA PEL and ACGIH TLV limits.
	electrode holders connected to two welders because voltage		5.c. Do not weld in locations near chlorinated hydrocarbon vapors
	between the two can be the total of the open circuit voltage
	of both welders.				coming from degreasing, cleaning or spraying operations.
					The heat and rays of the arc can react with solvent vapors to
3.i. When working above floor level, use a safety belt to protect					form phosgene, a highly toxic gas, and other irritating prod-
	yourself from a fall should you get a shock.				ucts.
3.j.	Also see Items 6.c. and 8.		5.d. Shielding gases used for arc welding can displace air and
				cause injury or death. Always use enough ventilation,
				especially in confined areas, to insure breathing air is safe.
			5.e. Read and understand the manufacturerʼs instructions for this
					equipment and the consumables to be used, including the
					material safety data sheet (MSDS) and follow your
					employerʼs safety practices. MSDS forms are available from
					your welding distributor or from the manufacturer.
			5.f. Also see item 1.b.
			AUG 06