Safety in Welding Welding Safety No substitute for caution and - PowerPoint PPT Presentation

Safety in Welding

Welding Safety No substitute for caution and common sense o Each person must take personal responsibility • Their own safety and safety of others on the job • A number of potential safety hazards Learning to work safely o As important as learning to be a skilled welding fabrication worker

 Guidelines  Shirts must be long-sleeved  Pants must be long enough to cover the tops of the boots and must be without cuffs  Boots must have high tops  Caps should be thick  Clothing must be free of frayed edges or holes  Some clothes have pockets  Not safe to carry a butane lighter or matches while welding

 Gloves — Wear heavy leather gloves with gauntlets

 Welding cap — Wear a cap with a flexible bill that can be slipped around to cover either ear to keep sparks and metal splatter out of the ear opening.

 Shirts — Wear heavy, long-sleeved shirts with pocket flaps; remove pockets or tape them  shut if they do not have pocket flaps; keep collar and sleeves buttoned to keep out sparks.

 Pants — Wear pants that have no cuffs and are long enough to cover the top of your shoes or boots.  No fray jeans or shorts

 Extra protection is needed for each person who is in direct contact with hot materials  Hand protection  Body protection  Waist and lap protection  Arm protection  Leg and foot protection

 Eye protection  Must be worn in the shop at all times  Safety glasses with side shields  Goggles  Full face shield  Flash glasses

 Safety glasses with side shields  Adequate for general use  Not suitable for heavy grinding, chipping, or overhead work  Must be worn under an arc welding helmet at all times

 Even with quality welding helmets, the welder must check for potential problems  Undetectable leaks of ultraviolet light can cause a welder's eyes to itch or feel sore  Ensure lens gasket is installed correctly  Tape can be used as a temporary repair

 Undetectable leaks  Proper welding helmet

 Welding environment can be very noisy  Hot sparks can drop into an open ear and cause severe burns  Several forms of protection  Earmuffs cover the outer ear completely  Earplugs fit into the ear canal

 Welding area should be well ventilated  Natural ventilation is best  Forced ventilation may be required  Large enough areas may not require forced ventilation

 Burns  One of the most common and painful injuries  Caused by ultraviolet light rays or contact with hot welding torches  Chance of infection is high  All burns must receive proper medical treatment  Divided into three classifications  First-degree, second-degree, and third-degree

 Some types of light can cause burns  Ultraviolet  Infrared  Visible  Arc welding produces all three types of light  Gas welding produces visible and infrared light only  Light from the welding process  Can be reflected from walls, ceilings, floors, etc.

 Long sleeves and gauntlet welding gloves.  Cutting goggles with shade 5 lens.  Use proper friction lighter to light gas.

 https://www.youtube.com/watch?v=ejEJGNL To84

Types of Welding Hazards Fires and explosions Do not carry any cigarette lighters in the • welding lab. Do the following to protect from fire and • explosions: Always know where the fire exits and fire • extinguishers are located. If welding within 35 feet of a combustible • object, utilize a fire watcher, who can watch for landing sparks.

 Four types  Type A: combustible solids  Type B: combustible liquids  Type C: electrical fires  Type D: combustible metals  Location  Appropriate type should be located near types of combustible materials it is used for

 Proper PPE Required  Correct Polarity  Turn off when not in use  Check Welding Hood

 Insure Insulators are not broken.  Check cables for breaks in insulation.  Once electrode is placed in holder end of electrode is live.

 Always stop and do an inspection of the grinder before first use.  Safety glasses, face shield, gloves.

 Do not grind out in the center of the lab for any reason!  Grind in booth with curtain closed.  Grind in grinding room.

 Fasten all loose clothing  Tuck in shirt tails  Remove strings from sweat shirts or jackets.  Take special care to keep clothing, other cords, clear.  Do not use flat, buff on edge or slight angle.

Release trigger and hold blade on base material until the blade stops!

 Considerations  Work area: should be picked up and swept clean  Arc welding areas: painted with a flat dark color  Portable screens: used if welding outside the welding booth  Piece of hot material is left unattended: write hot on it before leaving

 Used for assembly and disassembly of parts  Adjustable wrench is the most popular  Fewer points a box end wrench or socket has: the stronger it is  Mushroomed heads of chisels, punches, and the faces of hammers should be ground off  Always use the correct tool for the job

 Considerations  Hand tools should be treated properly and not abused  Keep hand tools clean  Make sure that hand tools are sharp  Protect cutting edges when carrying  Keep hammer handles secure and safe  When swinging a hammer, be absolutely certain that no one is within range

 Eye Protection  Use tongs & gently submerge weldments Protect others from  HOT steel

 HAND WASH  EYE WASH  FIRST AIDE  HAND SOAP  DRINKING FOUNTAIN

 Safety is of the utmost importance  The Instructor ensures welders comply with safety rules  Wear proper clothing, shoes, and protection  Have established procedures in case of accidents  Check equipment periodically