WAC 296-155-36305. Definitions applicable to this section

Angle control . A safety feature designed to prevent a tool from operating when tilted beyond a predetermined angle. Approved . Meeting the requirements of this standard and acceptable to the department of labor and industries. Cased power load . A power load with the propellant contained in a closed case. Caseless power load . A power load with the propellant in solid form not requiring containment. Chamber (noun) . The location in the tool into which the power load is placed and in which it is actuated. Chamber (verb) . To fit the chamber according to manufacturer's specifications. Fasteners . Any pins (unthreaded heads) or studs (threaded heads) driven by powder actuated tools. Fixture . A special shield that provides equivalent protection where the standard shield cannot be used. Head . That portion of a fastener that extends above the work surface after being properly driven. Misfire . A condition in which the power load fails to ignite after the tool has been operated. Powder actuated fastening system . A method comprising the use of a powder actuated tool, a power load, and a fastener. Powder actuated tool (also known as tool) . A tool that utilizes the expanding gases from a power load to drive a fastener. Power load . The energy source used in powder actuated tools. Qualified operator . A person who meets the requirements of WAC 296-155-36321 (1) and (2). Shield . A device, attached to the muzzle end of a tool, which is designed to confine flying particles. Spalled area . A damaged and nonuniform concrete or masonry surface. Test velocity . The measurement of fastener velocity performed in accordance with WAC 296-155-36307 (1)(m). Tools . Tools can be divided into two types: Direct acting and indirect acting; and 3 classes: Low velocity, medium velocity, and high velocity. • Direct acting tool . A tool in which the expanding gas of the power load acts directly on the fastener to be driven. • Indirect acting tool . A tool in which the expanding gas of the power load acts on a captive piston, which in turn drives the fastener. • Low-velocity tool . A tool whose test velocity has been measured 10 times while utilizing the highest velocity combination of: - The lightest commercially available fastener designed for that specific tool; - The strongest commercially available power load that will properly chamber in the tool; - The piston designed for that tool and appropriate for that fastener; that will produce an average test velocity from the 10 tests not in excess of 100 meters per second (328 feet per second) with no single test having a velocity of over 108 m/s (354 ft/s). • Medium-velocity tool . A tool whose test velocity has been measured 10 times while utilizing the highest velocity combination of: - The lightest commercially available fastener designed for the tool; - The strongest commercially available power load that will properly chamber in the tool; - The piston designed for that tool and appropriate for that fastener; that will produce an average test velocity from 10 tests in excess of 100 m/s (328 ft/s) but not in excess of 150 m/s (492 ft/s) with no single test having a velocity of 160 m/s (525 ft/s). • High-velocity tool . A tool whose test velocity has been measured 10 times while utilizing the combination of: - The lightest commercially available fastener designed for the tool; - The strongest commercially available power load which will properly chamber in the tool; that will produce an average velocity from the 10 tests in excess of 150 m/s (492 ft/s).