For Electrically, Iii | Lincoln Electric SVM197-A guide

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iii						SAFETY		iii
	WELDING and CUTTING						CYLINDER may explode
	SPARKS can						if damaged.
	cause fire or explosion.						7.a. Use only compressed gas	cylinders
	6.a. Remove fire hazards from the welding area.						containing the correct shielding gas for the
		If this is not possible, cover them to prevent					process used and properly operating
		the welding sparks from starting a fire.					regulators designed for the gas and
	Remember	that	welding	sparks	and	hot	pressure used. All hoses, fittings, etc. should be suitable for
	materials from welding can easily go through small cracks						the application and maintained in good condition.
	and openings to adjacent areas. Avoid welding near
	hydraulic lines. Have a		fire extinguisher readily available.				7.b. Always keep cylinders in an upright position securely
6.b. Where compressed gases are to be used at the job site,							chained to an undercarriage or fixed support.

	special precautions should be used to prevent hazardous						7.c. Cylinders should be located:
	situations. Refer to “Safety in Welding and Cutting” (ANSI						• Away from areas where they may be struck or subjected to
	Standard Z49.1) and the operating information for the						physical damage.
	equipment being used.
6.c. When not welding, make certain no part of the electrode							• A safe distance from arc welding or cutting operations and
							any other source of heat, sparks, or flame.
	circuit is touching the work or ground. Accidental contact can
	cause overheating and create a fire hazard.						7.d. Never allow the electrode, electrode holder or any other
6.d. Do not heat, cut or weld tanks, drums or containers until the							electrically “hot” parts to touch a cylinder.

	proper steps have been taken to insure that such procedures						7.e. Keep your head and face away from the cylinder valve outlet
	will not cause flammable or toxic vapors from substances						when opening the cylinder valve.
	inside. They can cause an explosion even though they have
	been “cleaned”. For information, purchase “Recommended						7.f. Valve protection caps should always be in place and hand
	Safe Practices for the Preparation for Welding and Cutting of						tight except when the cylinder is in use or connected for
	Containers and Piping That Have Held Hazardous						use.
	Substances”, AWS F4.1 from the American Welding Society
	(see address above).						7.g. Read and follow the instructions on compressed gas
6.e. Vent hollow castings or containers before heating, cutting or							cylinders, associated equipment, and CGA publication P-l,
							“Precautions for Safe Handling of Compressed Gases in
	welding. They may explode.						Cylinders,” available from the Compressed Gas Association
6.f.	Sparks and spatter are thrown from the welding arc. Wear oil						1235 Jefferson Davis Highway, Arlington, VA 22202.

	free protective garments such as leather gloves, heavy shirt,						FOR ELECTRICALLY
	cuffless trousers, high shoes and a cap over your hair. Wear
	ear plugs when welding out of position or in confined places.
							powered equipment.
	Always wear safety glasses with side shields when in a
	welding area.
6.g. Connect the work cable to the work as close to the welding							8.a. Turn off input power using the disconnect
							switch at the fuse box before working on
	area as practical. Work cables connected to the building						the equipment.
	framework or other locations away from the welding area
	increase the possibility of the welding current passing						8.b. Install equipment in accordance with the U.S. National
	through lifting chains, crane cables or other alternate circuits.						Electrical Code, all local codes and the manufacturer’s
	This can create fire hazards or overheat lifting chains or						recommendations.
	cables until they fail.						8.c. Ground the equipment in accordance with the U.S. National

6.h. Also see item 1.c.							Electrical Code and the manufacturer’s recommendations.
6.I.	Read and follow NFPA 51B “ Standard for Fire Prevention
	During Welding, Cutting and Other Hot Work”, available from
	NFPA, 1 Batterymarch Park,PO box 9101, Quincy, Ma
	022690-9101.
6.j.	Do not use a welding power source for pipe thawing.

Refer to http://www.lincolnelectric.com/safety for additional safety information.

Jan ‘09

POWERARC® 5500

iii

SAFETY

FOR ELECTRICALLY

powered equipment.