Basic Safety – NCCER
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Apparatus
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An assembly of machines used together to do a particular job
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Arc
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The flow of electrical current through a gas such as air form one pole to another pole
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Arc Welding
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The joining of metal parts by fusion, in which the necessary heat is produced by means of an electric arc
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Combustible
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Capable of easily igniting and rapidly burning ; Used to describe a fuel with a flash point at or above 100 degrees F
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Competent person
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A person who can identify working conditions or surroundings that are unsanitary, hazardous, or dangerous to employees and who has authorization to correct or eliminate these conditions promptly
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Concealed receptacle
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The electrical outlet that is placed inside the structural elements of a building, such as inside the walls. The face of the receptacle is flush with the finished wall surface and covered with a plate
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Confined space
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A work area large enough for a person to work, but arranged in such a way that an employee must physically enter the space to perform work. A confined space has a limited or restricted means of entry and exit. It is not designed for continuous work. Tanks, vessels, silos, pits, vaults, and hoppers are examples of confined spaces
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Cross-Bracing
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Braces(metal or wood) placed diagonally from the bottom of one rail to the top of another rail that add support to a structure
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Dross
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Waste material resulting from cutting using a thermal process
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Electrical distributing panel
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Part of the electrical distribution system that brings electricity from the street source (power poles and transformers) through the service lines to the electrical meter mounted on the outside of the building and to the panel inside the building. The panel houses the circuits that distribute electricity throughout the structure
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Excavation
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Any man-made cut, cavity, trench, or depression in an earth surface, formed by removing earth
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Extension Ladder
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a ladder made of two straight ladders that are connected so that the overall length can be adjusted
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Flammable
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capable of easily igniting and rapidly burning ; used to describe a fuel with a flashpoint less than 100 degrees F
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Flash
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A sudden bright light associated with starting up a welding torch
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Flashback
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A welding flame that flares up and chars the hose at or near the torch connection. It is caused by improperly mixed fuel
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Flash burn
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The damage that can be done to eyes after even brief exposure to ultra violet light from arc welding. A flash burn requires medical attention.
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Flash goggles
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eye protective equipment worn during welding operations
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Flash point
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The temperature at which fuel gives off enough gases to burn
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Ground
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The conducting connection between electrical equipment or electrical circuit and the earth
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Guarded
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Enclese, fenced, covered, or otherwise protected by barriers, rails, covers, or platforms to prevent dangerous contact
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hand line
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A line attached to a tool or object so a worker can pull it up after climbing a ladder or scaffold
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Hazard communication standard
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The occupational health safety and health administration standard that requires contractors to educate employees about hazardous chemicals on the job site and how to work with them safely
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Lanyard
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a short section of rope or strap, one end of which is attached to a worker's safety harness and the other to a strong anchor point above the work area
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Lockout/Tagout
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A formal procedure for taking equimpment out of service and ensuring that it cannot be operated until a qualified person has removed the lockout or tagout device
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Management System
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the organization of a company's management, including reporting procedures, supervisory responsibility, and administration
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Material safety data sheet
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A document that must accompany any hazardous substance. The MSDS identifies the substance and gives the exposure limits, the physical and chemical characteristics, the kind of hazard it presents, precautions for safe handling and use, and specific control measures
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Maximum intended load
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the total weight of all people, equipment, tools, materials, and loads that a ladder can hold at one time
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Mid-Rail
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mid-level, horizontal board required on all open sides of scaffolding and platforms that are more than 14 inches from the face of the structure and more than 10 feet above ground
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OSHA
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an agency of the U.S. department of labor. Also refers to the occupational safety and health act of 1970, a law that applies to more than 111 million workers and 7 million job sites in the country
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permit-required confined space
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A confined space that has been evaluated and fount to have actual or potential hazards, such as a toxic atmosphere or other serious safety or health hazard. Workers need written authorization to enter a permit-required confined space
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Personal protective equipment
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Equipment or clothing designed to prevent or reduce injuries
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Planked
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Having pieces of material 2 or more inches thick and 6 or more inches wide used as scaffolding
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Proximity work
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Work done near a hazard but not actually in contact with it
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Qualified person
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A person who, by possession of a recognized degree, certificate, professional standing, or by extensive knowledge, training, and experience, has demonstrated the ability to solve or prevent problems relation to a certain, work, or project
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Respirator
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A device that provides clean, filtered air for breathing, no matter what is in the surrounding air
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Scaffold
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An elevated platform for workers and materials
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Shoring
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Using pieces of timber, Usually in a diagonal position, to hold a wall in place temporarily
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Signaler
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A person who is responsible for directing a vehicle when a drivers vision is blocked in any way
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Slag
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Waste material from welding operations
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Step ladder
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A self supporting ladder consisting of 2 elements hinged at the top
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Straight ladder
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A nonadjustable ladder
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Switch enclosure
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A box that houses electrical switches used to regulate and distribute electricity in a building
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Toeboard
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A vertical barrier at floor level attached along exposed edges of a platform, runway, or ramp to prevent materials or people from falling
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Top rail
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A top-level, horizontal board required on all open sides of scaffolding and platforms that are more than 14 inches from the face of the structure and more than 10 feet above the ground
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Trench
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A narrow excavation made below the surface of the ground that is generally deeper than it is wide, with a maximum width of 15 feet
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Trencher
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An excavation machine used to dig trenches, especially for pipeline and cables
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Welding shield
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(1)A protective screen set up around a welding operation designed to safeguard workers not directly involved in that operation. (2) A shield that provides eye and face protection for welders by either connecting to helmet-like headgear or attaching directly to a hard hat
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wind sock
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A cloth cone open at both ends mounted in a high place to show which direction the wind is blowing
