Clarke 90EN Specifications download pdf (Page 6)

SAFETY PRECAUTIONS FOR ALL TYPES OF WELDING

1. WARNING:

As with all machinery, there are certain hazards involved with their operation

and use. Exercising respect and caution will considerably lessen the risk of

personal injury. However, if normal safety precautions are overlooked, or

ignored, personal injury to the operator may result.

FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERIOUS PERSONAL INJURY

2. GENERAL PRECAUTIONS

A) Burn prevention

Wear protective clothing - gauntlet gloves designed for use in welding, apron, and

protective shoes. Button shirt collar and pocket flaps, and wear cuffless trousers to

avoid entry of sparks and slag. Wear helmet with safety goggles or glasses with side

shields underneath, appropriate filter lenses or plates (protected by clear cover

glass). This is a MUST for welding or cutting, (and chipping) to protect the eyes from

radiant energy and spatter. Replace cover glass when broken, pitted, or spattered.

Avoid oily greasy clothing. A spark may ignite them. Hot metal such as electrode

stubs and workpieces should never be handled without gloves. First aid facilities

and a qualified first aid person should be available unless medical facilities are close

by for immediate treatment of flash burns of the eyes and skin burns. Ear plugs

should be worn when working overhead or in a confined space. A hard hat should

be worn when others work overhead. Flammable hair preparations should not be

used by persons intending to weld or cut.

B) Toxic fume prevention

Severe discomfort, illness or death can result from fumes, vapours, heat, or oxygen

enrichment or depletion that welding (or cutting) may produce. Prevent them

with adequate ventilation. NEVER ventilate with oxygen. Lead-, cadmium-, zinc-,

mercury- and beryllium-, bearing materials, when welded (or cut) may produce

harmful concentrations of toxic fumes. Adequate local exhaust ventilation must

be used, or each person in the area as well as the operator must wear an air-

supplied respirator. For beryllium, both must be used. Metals coated with or

containing materials that emit toxic fumes should not be heated unless coating is

removed from the work surface, the area is well ventilated, or the operator wears

an air-supplied respirator. Work in a confined space only while it is being ventilated

and, if necessary, while wearing an air-supplied respirator. Vapours from

chlorinated solvents can be decomposed by the heat of the arc (or flame) to

form PHOSGENE, a highly toxic gas, and other lung and eye irritating products.

The ultraviolet (radiant) energy of the arc can also decompose trichloroethylene

and perchloroethylene vapours to form phosgene. DO NOT WELD or cut where

solvent vapours can be drawn into the welding or cutting atmosphere or where

the radiant energy can penetrate to atmospheres containing even minute

amounts of trichloroethylene or perchloroethylene.

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Clarke 90EN Specifications Page 6