SAFETY IN THE SHOP A GUIDE TO SAFETY WHILE ARC WELDING

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SAFETY IN THE SHOPA GUIDE TO SAFETY WHILE ARC
WELDING
Mr. Conrado
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PRESENTATION OUTLINE

• GENERAL SHOP SAFETY
• HOUSEKEEPING
• FIRE PREVENTION
• MANAGEMENT
• WELDING SHOP SAFETY
• EYE PROTECTION
• DRESS CODE
• BEHAVIOR
• VENTILATION

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Housekeeping

• Cleaning work areas
• Sweepingprevent slips and falls
• Keeping designated walking areas clear of debris
• Restoring equipment and tools after job is
  completed

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Fire Prevention

• Discard frayed cords and wires
• Keep flammable liquids away from heat
• Class C fire extinguishers for electrical fires.

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General Management

• MSDS sheets
• Emergency phone numbers
• 9-911
• Campus Safety-6911
• Injury 6037

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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 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

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• Here are
• examples of
• proper eye
• protection

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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.

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• Heres a good example of a welder wearing all the
  proper welding protection

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Behavior

• Most accidents are caused by carelessness
• Caused by human error
• Refrain from getting involved in poor
• shop behavior
• scuffling playing with tools
• tripping running
• pushing hurrying projects
• disobeying shop rules loud talking

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Burns caused by light

• Three types of light
• Visible
• That which you can see
• Infrared
• That which you can feel
• Ultraviolet
• Not visible but can cause the most severe damage
  to skin and eyes
• Arc welding produces all three types
• Oxy-fuel produces visible and infrared only
• Reflected light can cause burns to the eyes

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Burns caused by UV light or Contact with Hot Metal

• Chance of infection is high (dead tissue)
• Burns must receive proper medical treatment.
• Three classifications of burns depending on
  severity
• First Degree Surface of skin reddish in color,
  tender, no broken skin.
• Treatment Put burned area under water, towel,
  compress, or cloth soaked in cold water, Notify
  instructor
• Second Degree Surface of skin is severely
  damaged formation of blisters and possible
  breaks in the skin.
• Treatment same as first degree then clean and
  cover area with bandage or cloth. Notify
  instructor and seek professional medical
  attention.

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Burns caused by UV light or Contact with Hot Metal

• Three classifications of burns depending on
  severity (Continued)
• Third Degree Surface of skin and possibly the
  tissue below the skin appear white or charred.
  Little pain is present (nerve damage). Do not
  remove any clothes stuck to the wound. Do not put
  ice water or ice on the burn. Do not apply burn
  medications. If victim is on fire, smother
  flames with blanket, etc. Notify instructor and
  seek professional medical attention.
• Ultraviolet Most Dangerous
• Can not be seen or felt (immediately)
• Proximity to arc makes a large difference
• Eyes can receive flash burn
• UV rays can pass through light, thin clothing,
  eyelids, and damage welding helmets

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Eye and Ear Protection

• Shaded Lenses
• Oxy-fuel - 5 or 6
• GMAW - 10 most common
• GTAW - 11 recommended
• Eye protection
• Safety glasses worn at all times
• A full welding helmet must be worn
• Hearing protection
• Hearing loss occurs when one is exposed to sound
  of 100db or more for a period of 60 minutes or
  longer
• Hearing protection will be provided if you like.

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Electrical Safety
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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

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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

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Common Ventilation Practices
Extracted bench method Local exhaust
ventilation
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Examples of Welding Practices
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Conclusion

• You have just received a crash course in general
  and welding shop safety. Using these guidelines
  and precautions will provide a safer, more
  efficient workplace.
• Questions??????

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Homework

• Read chapter 2 Safety in Welding
• Complete chapter review questions page 45.