NCCER Welding Level 1 Module 1 Safety questions and answers

Arc burn burn to the skin produced by brief exposure to intense radiant heat and ultraviolet light Bonded the permanent joining of metallic parts to form an electrically conductive path that will assure electrical continuity and the capacity to safely conduct any current likely to be imposed on it Carbon steel an alloy of iron combining iron and usually less than 1 percent carbon to provide hardness Electric arc the flow of an electrical current across an air gap or gaseous space Electrically grounded connected to Earth or to some conducting body that serves in place of the earth Electrode the point from which a welding arc is produced Flash burn burns to the eyes sometimes called welder's flash; caused by exposure to intense radiant heat and ultraviolet light Flux a material used to dissolve or prevent the formation of oxides and other undesirable substances on a weld joint Fume plume the fumes, gases, and particles from the consumables, base metal, and base metal coating during the welding process Galvanized carbon steel dipped in zinc to inhibit corrosion Immediate Danger to Life and Health (IDLH) as defined by OSHA, this term refers to an atmosphere that poses an immediate threat to life, would cause irreversible adverse health effects, or would impair an individual's ability to escape from a dangerous atmosphere Purge gas an inert gas, such as nitrogen, used to drive oxygen away from a weld site Shielding gas a gas such as argon, helium, or carbon dioxide used to protect the welding electrode wire from contamination in GMAW and FCAW welding Stainless steel an iron-based alloy usually containing at least 11 percent chromium Ultraviolet (UV) radiation invisible rays capable of causing burns. UV rays from the sun are the causes of sunburn Ventricular fibrillation irregular heart rhythm characterized by a rapid fluttering heartbeat SMAW (Stick Welding) What is the most common type of welding? the focus is on classroom training A competency-based curriculum is one in which ____ high school When do youth apprenticeship trainings allow students to begin apprenticeship or craft training? Cotton, wool, and leather. NEVER synthetics What materials provide the best protection while welding? 9-14 What is the recommended shade for electric arc operations? 18 & under In what age group are accidents most common? Write "HOT" on the metal What should you do before leaving hot metal unattended? work that could potentially pose a fire hazard What does a hot work permit authorize? A fire watch What should you always have in the area during cutting operations? a space large enough for a worker to enter and work What is a confined space? 19.5% Below what %age is the atmosphere considered "oxygen deficient" damp skin What increases the potential for electric shock? zinc What is used to galvanize metals that is potentially toxic? positive AND negative fit checks What should be performed every time you don a respirator? SDS (Safety Data Sheet) What form is used to communicate detailed hazard, safety, and handling information about materials on site? 6,000-10,000F What temperatures are welds done at? GMAW/Mig and FCAW/Flux Core What two welding processes are very similar? Z49.1 What is the AWS standard for welding and cutting safety? to keep others from seeing the welding arc What is the primary purpose of a welding screen? NO! They must remain vigilant and watch for fires Can someone on fire watch also be doing another task? nitrogen and argon What is used as a purge gas? Severe burns Electrical shocks can cause what? Manganese, Hexavalent chrome, galvanized steel, and others What are some examples of metals that produce toxic fumes when heated?