Arc Welding Safety 115

Welding Training

Class Information

Tooling U classes are offered at the beginner, intermediate, and advanced levels. The typical class consists of 12 to 25 lessons and typically requires at least two hours of instruction time.

Class Name:	Arc Welding Safety 115
Description:	This class describes general safety practices that all welders must follow during arc welding procedures. Includes an Interactive Lab.
Prerequisites:	none
Difficulty:	Beginner
Number of Lessons:	16

Below are all the competencies and job programs that contain the class Arc Welding Safety 115. Job programs are our traditional class lists organized according to common job functions. Competences are our latest job-specific curricula that help tie online learning to practical, hands-on tasks.

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Competencies
Mechanical Technician

Job Programs	Show All
Job: Assembler Job: Arc Welder Job: Maintenance and Repair: Industrial Machinery

Class Outline
Objectives Safety and Arc Welding Risk of Arc Radiation Preventing Arc Radiation The Welding Shield Risk of Burns and Fire Preventing Burns Protecting the Ears Preventing Fire Risk of Electrical Shock Preventing Electrical Shock Risk of Harmful Fume Inhalation Preventing Harmful Fume Inhalation Risk of Explosion Preventing Explosion Summary

Class Objectives

Explain the importance of arc welding safety.
Identify the dangers of arc radiation.
Describe common procedures for preventing arc radiation.
Describe characteristics of the welding shield.
Identify possible risks of burns and fire.
Describe common procedures for preventing burns.
Explain the importance of ear protection.
Describe common procedures used to prevent fire.
Identify possible risks of electrical shock.
Describe common procedures for preventing electrical shock.
Identify possible risks of harmful fume inhalation.
Describe common procedures for preventing harmful fume inhalation.
Identify possible risks of explosion.
Describe common procedures for preventing explosion.

Class Vocabulary
American Welding Society		The non-profit society that regulates the industrial standards for welding.
amperage		A unit of measurement that indicates the amount of current flowing in a circuit. The required amount of shading for a welding helmet's filter lens increases when more amperage is used for a weld.
arc		The area in which electricity jumps from the electrode to the workpiece. The heat generated by the arc melts the base metals.
arc flash		An extremely painful condition that can result from exposure to UV rays. Arc flash can feel like sunburn on the eye; it is usually a temporary condition.
arc welding		A fusion welding process that uses electricity to generate the heat needed to melt the base metals.
asphyxiate		To cause death by obstructing the breathing with inadequate oxygen or fume inhalation.
auto-darkening welding shield		A type of welding shield that automatically adjusts to the proper amount of shading for any process.
chromium		A grayish metal that improves corrosion resistance. Hexavalent chromium is sometimes added to electrons used in arc welding.
combustible material		An object that can quickly catch fire if it comes in contact with sparks or fire. Combustibles must never be present in a weld area.
cotton		A fabric made from the fiber of various plants. For welding, cotton clothing is a good choice.
earmuffs		Ear wear that protects hearing. Earmuffs also prevent flying spatter from entering the ear.
earplugs		Ear wear that protects hearing. Earplugs do not protect the outer ear.
electrical shock		The flow of electricity through the human body. Electrical shock can be fatal.
electrode		A device that conducts electricity. The required amount of shading for a welding helmet's filter lens increases when larger electrodes are used. Electrodes can also emit harmful fumes.
electrode holder		The insulated handle that clamps onto the electrode. The electrode holder must be dry and in good condition.
exhaust		Any of various devices used to suck up harmful fumes in welding.
face shield		A hand-held welding shield, often used for bystanders to view the arc safely or for lighter welding jobs.
filter plate		The shaded protective lens inside the welder's helmet that filters out harmful rays and intense bright light. The amount of shading required depends on the welding process, electrode size, and amount of current used.
fire extinguisher		A portable device that uses a rapid spray of chemicals to put out small fires.
fire shield		A large, flame-resistant screen. Fire shields are placed around the area of welding to protect bystanders from spatter, the arc's harmful rays, and bright light.
fire watcher		A person other than the welder who keeps watch over the weld area. The fire watcher must be able to quickly respond should there be a fire or other emergency.
flammable material		An object that can quickly catch fire if it comes in contact with sparks or fire. Flammable materials can catch fire at lower temperatures than combustible materials. Flammables must never be present in a weld area.
fume		Metallic vapor that is emitted during the weld process. The metallic vapor solidifies to form tiny particles of metal.
fume plume		A cloud-like area where welding fume collects.
hexavalent chromium		A grayish metal that contains the element chromium and oxygen. Hexavalent chromium is sometimes added to electrodes used in arc welding.
high-vacuum low-volume system		A ventilation system that is meant to exhaust a smaller area.
inert		A type of gas that is inactive and is not chemically reactive. Many shielding gases are inert.
infrared rays		Invisible rays emitted during the welding process. Infrared rays can damage vision.
insulation		Material that does not allow for the easy flow of electricity. Proper insulation is mandatory to prevent electrical shock.
lead		A conductor that provides an easy path for electricity to flow. Leads inside the welder must be repaired by trained technicians only.
leather		A fabric made from the hide or skin of an animal. For welding, leather covering provides the welder with extra protection.
low-vacuum high-volume system		A ventilation system commonly used in industry that is meant to exhaust a large area.
nitrogen oxide		A toxic gas that is created when UV radiation hits the air. Nitrogen oxide can cause symptoms including headaches, chest pains, and itchiness of the eyes.
nontoxic		A substance that is not harmful.
OSHA		The Occupational Safety and Health Administration. A government agency under the U.S. Dept. of Labor that helps employers reduce injuries, illnesses, and deaths in the workplace.
oxidize		To combine chemically and react with oxygen.
oxyfuel welding		A fusion welding process that uses a flame produced by gas containing oxygen and a gas fuel.
ozone		A toxic gas that is created when UV radiation hits the air. Ozone can cause symptoms including headaches, chest pains, and itchiness of the eyes.
polyester		A fabric made of man-made materials that can melt in the presence of the arc's extreme heat. Jerseys are sometimes made of polyester.
primary voltage shock		An electrical shock from 120-480 volts that occurs in arc welding from touching a lead inside a switched-on welder and then touching the welder case or other grounded metal at the same time.
rayon		A fabric made of man-made materials that can melt in the presence of the arc's extreme heat. Button-down shirts are sometimes made of rayon.
regulator		The device used to control the amount of gas that flows from a cylinder during a weld.
secondary voltage shock		An electrical shock from 60-100 volts that occurs in arc welding from touching the electrode while another part of the body touches the workpiece.
slag		Cooled flux that forms on top of the weld bead. Slag protects cooling metal and is then chipped off.
source capture system		A moveable ventilation device that sucks up harmful fumes inches away from the arc.
spatter		Liquid metal droplets expelled from the welding process. Spatter can spray up to 35 feet from the work area.
submerged arc welding		SAW. An arc welding process that uses a consumable wire electrode, which deposits a layer of flux over the weld to prevent spatter.
ultraviolet rays		Harmful invisible rays emitted by the arc during welding. UV rays can damage a welder's vision and burn skin.
valve cap		A device used to prevent the flow of gas from a cylinder while not in use.
ventilation		A means of providing fresh air. For the safety of the welder, welding requires proper ventilation.
welding helmet		A protective eye and face device worn during welding. Welding helmets protect the welder from the arc's harmful rays and intense bright light.
welding hood		A stationary ventilation device installed above the weld area. The welding hood sucks up harmful fumes in its surrounding area.
welding screen		A large fire-resistant screen placed around a weld area. Welding screens are commonly used to protect bystanders and to block stray spatter.
welding shield		Another name given for eye and face protection worn during welding. Welding shields protect the welder from the arc's harmful rays and intense bright light.
wool		A fabric made from the soft covering of a sheep. For welding, wool clothing is the best choice.
work cable		The path used in welding to conduct electricity from the welder to the workpiece. To prevent injury, the work cables must be in good condition and correctly installed.
work clamp		The component that, along with the electrode, comes in direct contact with the workpiece during welding. The work clamp is connected to the work cable.