Module 1, Welding Safety questions and answers

A charcoal filter in an air-purifying respirator should be changed _____. when the wearer detects any taste or smell A document issued by the site manager that allows a welder to perform operations with a potential risk of fire is a _____. hot work permit All of the following fabrics may be worn around sources of sparks or high heat except _____. polyester An exhaust hood should be located _____ the source of welding fumes. four to six inches away from An oxygen level of _____ percent by volume is considered normal and safe to work in. 19.5 to 21.5 Compared to a full leather welding jacket, a welding cape is _____. cooler Detailed information regarding the possible hazards associated with a product is contained in a _____. material safety data sheet (MSDS) Foot and vehicle traffic in the workplace is _____. more hazardous at starting and quitting times If acetylene is withdrawn from a cylinder at a rate of more than one-seventh of the volume per hour, there is a risk of _____. liquid acetone being drawn into the hoses and gumming up the check valves and regulator In addition to protecting other workers from exposure to electric arcs, welding screens _____. prevent drafts from interfering with the stability of the arc Most welding environment fires occur during _____. oxyfuel gas welding or cutting The first thing to be done at any job site before work begins is to _____. conduct an evaluation of the hazards that exist The most common welding accident is _____. burns to the hands and arms The outcome of an electric shock is determined by the _____. amount of current that passes through the body The proper selection of a respirator is based on the _____. contaminant present and its concentration The risk of flash burn can be reduced by wearing _____. safety glasses with a properly tinted lens The storage area for oxygen cylinders must be 20 feet away from fuel gas cylinders or be _____. separated by a wall five feet high with a half-hour burn rating When lifting a heavy object, _____. distribute the weight of the object evenly between both hands Which of the following is a correct statement regarding personal protective equipment? Disposable earplugs are the most common form of hearing protection used in welding.