SAFETY IN THE SHOPA GUIDE TO SAFETY WHILE ARC

WELDING

PRESENTATION OUTLINEGENERAL SHOP SAFETY

HOUSEKEEPINGFIRE PREVENTIONMANAGEMENT

WELDING SHOP SAFETYEYE PROTECTIONDRESS CODEBEHAVIORVENTILATION

HOUSEKEEPING Cleaning work areas Sweeping—prevent slips and falls Keeping designated walking areas clear of

debris Restoring equipment and tools after job is

completed

FIRE PREVENTION Discard frayed cords and wires

Keep flammable liquids away from heat

Class C fire extinguishers for electrical fires

GENERAL MANAGEMENT Safety programs—training, meetings, etc.

Emergency phone numbers

Never Weld near water

SAFETY

Eye & Ear Protection

Welding Helmet with Lens Shade Number

Welding Gloves & Optional Covering

Proper Attire

SAFETY: EYE PROTECTION “An ounce of prevention is worth a pound of

cure” when it comes to eye protection Always wear proper eye protection when

working in the shop A welder must be protected from harmful light

radiation given off by the welding process For welding you will be using chipping goggles

and a welding helmet

Here are examples of proper eye protection

Here’s a good example of a welder wearing all the proper welding protection

Hearing ProtectorsSafety Glasses

Goggles

Ear Plugs

EYE & EAR PROTECTION

WELDING HELMET

LENS SHADES SELECTION FOR SHIELDED METAL ARC WELDINGMinimum Suggested *

Electrode Size Arc Protective Shade No.Operation in. (mm) Current (A) Shade (Comfort)

GMAW Less than 60 7 10Not Specified

60-160 8 12Per

160-250 10 12AWS / ANSI

250-550 11 14

* As a rule of thumb, start with a shade that is too dark to see the weld zone. Then go to a lightershade, which gives sufficient view of the weld zone without going below the minimum.

AWS/ANSI LENS SHADE NUMBERS

DRESS CODE Wear properly fitted clothes. When welding, sleeves should be buttoned and

gloves should be worn. Wear boots or high top; Tightly laced shoes. Do not wear loose clothing, shirt tails, and

unbuttoned sleeves around power equipment. Do not wear clothes that you do not want to

get dirty.

Leather Welding TrousersLeather Cape Sleeves/Bib

Leather Welding Jacket

Leather Welding Gloves

Leather Welding Apron

WELDING COVERINGS

PROPER ATTIRE

BEHAVIOR Most accidents are caused by carelessness Caused by human error Refrain from getting involved in poor

shop behavior:scuffling playing with toolstripping runningpushing hurrying projects disobeying shop rules loud talking

WELDING FUMES Welding fumes can be harmful to the welder

causing implications such as: Irritation of the respiratory tract Metal fume fever A condition known as siderosis Slightly increase the risk of lung cancer

For these reasons, one should take precaution with welding fumes

WELDING FUMES

Welding should be done in a well ventilated area

Should attempt to control fumes at the source Common ways

Extracted benches Local exhaust

ventilation

COMMON VENTILATION PRACTICES

Extracted bench method Local exhaust ventilation

EXAMPLES OF WELDING PRACTICES

POSTERSWhat is the Issue

Effects/Hazards Prevention

SAFETY

Electrical Hazards Fumes and GasesArc RadiationFire or ExplosionHazards in the Work

Area

ELECTRICAL HAZARDS High Voltage Can Kill

Do Not Operate With Covers Removed Disconnect Input Power Before Servicing Do Not Touch Electrically Live Parts

Electrical Shock Can Kill Do Not Touch Electrode With Skin or Wet Clothing Insulate Yourself From Work and Ground

FUMES & GASES Welding May Produce Hazardous

Fumes And Gases

Shielding Gases Can Displace Air and May Cause Injury or Death

Use Ventilation To Keep Air Breathing Zone Clear

Do Not Weld Near Chlorinated Hydrocarbons

ARC RADIATION Electric Arc Welding Rays Can

Burn Eyes and Skin

Always Use a Helmet When Arc Welding

Select Appropriate Filter Lens

Wear Appropriate Clothing

Provide Non-Flammable Shielding to Protect Others

FIRE OR EXPLOSION Remove Flammable Materials From

The Welding Area

Keep a Fire Extinguisher in the Welding Area

Wear Fire Retardant Clothing

Do Not Weld on Containers Which Have Held Combustible Materials

GENERAL WORK AREA HAZARDS Keep Power Source Cables, Welding

Materials and Tools Neatly Organized Connect Work Cable as Close as Possible to

the Weld Area Use Only Properly Grounded Equipment Always Disconnect Power to Arc Welding

Equipment Before Servicing