Yard Machines Y60 Operations Instructions download pdf (Page 166)

c. The use of magnetic particle and/or dye

penetrant techniques of nondestructive testing for

this inspection are highly recommended.

5-15. SAFETY.

a. Protect-o-seal (anti-flashback) fuel tank cap

must be in place before grinding, burning, or

welding. Preferred procedure is to empty the fuel

tank and purge with CO

Before attaching welding ground cable to

the machine, be sure that the alternator

harness

and/or

battery cables are

disconnected. This is to prevent burning

out the diodes in the alternator because of

reverse polarity.

b. Always wear helmet, asbestos gloves, suitable

shoes, apron, or other suitably protective clothing

when welding.

c. Clothing should be heavy, free from oil or

grease. Pockets and cuffs should be protected

against sparks and slag.

d. Portable grinders should have proper wheel

guards. Operator should be equipped with goggles

or safety shield.

e. Always use proper torch, tip, electrode, and

holder for the job.

f. Maintain good welding cables, preferably

protected by loom.

g. Ground cables to work, never to house

systems, hoists, chain falls, etc. Attach welding

ground cable to one of the two members being

joined. Do not run current through bearings or

wear surfaces.

h. Welding area should be clean and dry.

i. Oxygen should never be used as compressed

air, in cleaning or drying operations.

j. Do not use rope to suspend work when

flame-cutting, grinding, or welding.

5-6

5-16. FIRE PROTECTION.

a. Remove work from hazardous area before

cutting or welding. If this is not possible, remove

flammable material from work area, or cover with

flame arresting material.

b. Correct those conditions where sparks or slag

can travel into combustible materials.

c. Keep oil or grease separated from oxygen. This

combination is explosive if ignited.

d. Do not allow clothing to collect pure oxygen.

In this concentrated or oxygen-enriched condition,

materials burn violently.

e. Keep fully charged fire extinguishers nearby.

Employ standby assistant with extinguisher during

unavoidably hazardous conditions.

5-17. VENTILATION.

a. Fans on welders and work help to assure good

ventilation. Adequate exhaust fans are essential.

However, a breeze directed on the arc can destroy

the gas shield around the arc.

b. Never use oxygen for ventilation, or as air jet.

c. Avoid all welding or cutting in paint booths,

around dip tanks, degreasing, or other naturally

hazardous areas.

d. Excessive or continued breathing of smoke,

toxic fumes, or dust is injurious. Use respirator in

addition to ventilation under severe conditions.

e. Keep all air in work area moving toward

exhaust system.

5-18. FILLER METALS.

a. All stick electrodes for subject contract joints

must be low hydrogen coated (herein called L.H.)

L.H. electrode E-7018 (AWS Class.) is recom-

mended, except when specially noted.

b. E-7018, E-8018, E-9018, E-10018, E-11018

have AC-DC polarity, reversing current, with a

coating of low hydrogen iron powder.

c. L.H. electrodes are supplied from the vendor

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Yard Machines Y60 Operations Instructions Page 166

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