TIEDOWN Strap or fastening device used to hold an object in position.
TORQUE Force around an axis. It produces a rotary or twisting motion, and is measured in foot
pounds (ft lb) or newton-meters (Nm).
TOXIC Harmful; deadly; poisonous.
VALVE A device used to control the flow of a fluid.
VAPOR The gaseous form of any substance which is usually a liquid; vapors are present in the air
around the substance.
VENTILATE To provide with a source of fresh or uncontaminated air.
WELD A union or joint (of metals) produced by applying heat, sometimes with pressure.