safe practices.pptx

8/11/2019 SAFE PRACTICES.pptx

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ASPECTS IN WELDING

Welding primarily uses a heat s0urce

Fusion welding implies that thematerial is taken above the meltingpoint

Weld metal is a miniature cast metal


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EYE PROTECTION IN WELDING

Radiation emitted byheated solids/ gases

Ultra violet rays

Intense visible rays

Infrared rays


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SOURCES OF FUMES...

Action of heat on the parent metal

Action of heat on the surface treatment of the parentmetal

Action of heat on the coating/ consumables

Action of heat on surrounding air/ shielding gas


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ASSESSMENT & CONTROL

MAKE AN ASSESSMENT OF HEALTH RISKSCREATED BY HAZARDOUS SUBSTANCES

PREVENT GENERATION OF FUMES

CONTROL EXPOSURE TO FUMES PROVIDE ADEQUATE INFORMATION TO THE

WELDER

CARRY OUT PERIODIC AUDITS ON THE RISKSINVOLVED


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FUME PROTECTION

General ventilation ofthe site, withunrestricted disposal

of fumes

Local extraction

Personal protection


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SPHERES OF CONTROL &

INFLUENCE...

Smoking is injurious tohealth

Welding fume is injuriousto health

Automobile exhaust isinjurious to health


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OSHA.

Occupational safety and health act

To assure safe and healthy working conditions

Authorizing enforcement of standards thereof

Providing information, education andtraining


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PERCEPTIONS.

Perceived problems of

Equipment mfgs

Consumable mfgs

Industrial users

Welders


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ENLIGHTMENT

Enlightened non-governmentalorganisations

Enlightened employers

Enlightened employees


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SAFE PRACTICES

22 - 12

Safety most important consideration to both workerand employer

Welding no more dangerous than other industrialoperations

Safety precautions and protective equipmentrequired for MIG/MAG process essentially same asfor any other electric welding process


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EYE, FACE, AND BODY PROTECTION

22 - 13

Welding helmets and protective clothing necessary

Radiant energy produced by gas-shielded process 5to 30 times more intense than produced by shielded

metal arc welding Lowest intensities produced by gas tungsten arc

Highest by gas metal arc

Argon produces greater intensities than helium


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Mr. R.D.Pennathur

CLOTHING REGULATIONS

22 - 14

Standard arc welding helmets with lenses rangingin shade from no. 6 for work using up to 30amperes to no. 14 for work using more than 400amperes should be wornArc should never be viewed with the naked eye when

standing closer than 20 feet

Skin should be covered completely to prevent burnsand other damage from ultraviolet light Back of the head and neck should be protected from

reflected radiation

Gloves should always be worn


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Mr. R.D.Pennathur

HANDLING OF GAS CYLINDERS

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Stored cylinders should be in protected area awayfrom fire, cold, and grease and away from generalshop activity

Cylinders must be secured to equipment to preventtheir being knocked over

Proper regulators and flow-meters must be used witheach special type of cylinder


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HANDLING OF GAS CYLINDERS

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Cylinders should not be dropped, used as rollers,lifted with magnets, connected into electric circuit,or handled in any other way that might damagecylinder or regulator

When cylinders empty, should be stored in upright

position with valve closed


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ELECTRICAL SAFETY

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Hazard less than that with shielded meal arcprocess

Open circuit voltage considerably less

Electrical maintenance should be done only byqualified person

NEVER work on in electrical Equipment in HOT

condition


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Mr. R.D.Pennathur

WIRE-FEEDER SAFETY

22 - 18

Turn power off when aligning and adjusting driverolls

Remember force being applied to wire is sufficient topush it through your hand or other body parts

Never let exposed wire come in contact with or bepointed at your body


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Mr. R.D.Pennathur

FIRE SAFETY

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Welding should not be done near areas where flammablematerials or explosive fumes present

Paint spray or dipping operations should not be locatedclose to any welding operation

Combustible material should not be used for floors, walls,welding tables, or in immediate vicinity of weldingoperation

When welding on containers that have previously containedcombustible materials, special precautions should be taken

Use hotwork permitas required


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CARE OF NOZZLES

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Keep the gun nozzle, contact tube, and wire-feedingsystem clean to eliminate wire-feeding stoppages Nozzle is natural spatter collector

If spatter builds up thick enough, it can actuallybridge gap and electrically connectinsulated nozzle to contact tube

To remove spatter, use soft, blunttool for prying

Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or


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Mr. R.D.Pennathur22 - 21

Spatter almost falls out by itself if nozzle kept clean,shiny and smooth

Antispatter compound may be applied to gun nozzle

and contact tube end Do not clean by tapping or pounding on solid object Bends gun nozzles, damages threads and high temperature

insulation in nozzle can break

CARE OF NOZZLES


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Mr. R.D.Pennathur

ASSUMED SAFETY PRECAUTIONS

22 - 22

Welding equipment installed properly

Welding machine in dry location, and no water on floorof welding booth

Welding booth lighted and ventilated properly

All connections tight, and all hoses and leads arranged sothey cannot be burned or damaged

Gas cylinders securely fastened so they cannot fall overand not part of electrical circuit


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Mr. R.D.Pennathur

ELECTRIC SHOCK

FUMES, DUST AND OZONE

ULTRAVIOLET / INFRA-RED RADIATION HOT WORK-PIECE AND WELDING

EQUIPMENT

FIRE AND EXPLOSION HAZARDS NOISE

HANDLING COMPRESSED GAS CYLINDERS

TRIPPING & FALLING

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SAFETY ASPECTS


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Mr. R.D.Pennathur

CHOICE OF FILTER GLASS August

12,2014

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Current Range Filter Number

15-40 A 7-9

40-60 A 8-10

60-150 A 10-11

150-250 A 11-12

250-500 A 12-14


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Augu

st12,2014

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Wrong

positioning

duringwelding

August

12,2014

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Correct

positioning

duringwelding

August

12,2014

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For light duty work (200 Amps or

lower)

Working overall w/long sleves (flame

retardent material). Preferably

without too many pockets that easily

catch sparks.

For same reason avoid zips.

Avoid synthetic materials, including

nylon, rayon and polyester.

Safety boots with steel toes.

Face shield w/handle or face shield

w/head band

Welders gloves


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Mr. R.D.Pennathur

For heavy duty work

(above 200 Amps)

Working overall

Safety boots with steel toes

Face shield w/head band

Welders gloves

Leather jacket

Leather trousers


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Mr. R.D.Pennathur

For work in vertical and

overhead position

Working overall

Safety boots with steel toes.

Face shield w/head band

Welders gloves

Arm protector

Leather spats


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August12,2014

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Eye Exposed toArc Radiation


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Augu

st12,2014

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BurnInjuries


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SafeWorking

Conditions

Good

House

keeping

August12,2014

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UnsafeWorking

Fire Hazards

Arc Radiation

August12,2014

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GOODWORK

TABLE

W f th d f t f i d f ldi


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We are one of the renowned manufacturers of various grades of weldingconsumables which are second to none in terms of quality. We have the mostmodern manufacturing facility equipped with latest sophisticated machineryat Pondicherry, India

We are manufacturing a vast range of Shielded Metal Arc Welding

Electrodes and Flux Cored Arc Welding Electrodes. We also supplytested GMAW and GTAW welding consumables for all the applications.Our hardworking team would always be interested in any opportunity to cater

your requirement of welding consumables.Currently we are supplying massive quantity of welding consumables to many

world class EPC companies in various range of welding consumablesincluding Carbon steel, Low Temperature Carbon Steel, Stainless Steel, Lowalloy steel etc.If at all the need arises for a special consumable which is not in our arsenal,our R&D team is fully equipped in developing special electrodes to meetService Requirements, Impact Test Requirements with strict chemistrycontrols and as welded hardness test criteria.

We built quality and consistency in our consumables. Our manufacturing

facility always had the market pulse to meet its demands and fast trackdelivery requirements without compromising quality and consistency.Willing to be a part of your esteemed organization, we took this privilege toapproach and request your kind consideration for providing opportunity toMAILAM INDIA LTD for the following consumables.

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