CWB Welding Inspector Level 1 - Chapter 1 questions and answers

Welding of copper alloys containing beryllium produces fumes that are: - ans -----highly toxic potentially causing disease of the lung. A welder can protect him/herself from over exposure to welding fumes by: - ans -----using ventilating equipment. The minimum protective shade number for oxygen cutting should be: - ans -----3. The noise level of FCAW is typically between: - ans -----50 - 86 decibels When using an oxy-fuel gas torch and a sustained backfire occurs, what should be done first? - ans -----Turn off the torch valves Ozone generated during the welding process: - ans -----can form away from the arc. The fume generation rate for welding is used to measure the welder's exposure to the fume. - ans -----False. Fume Generation is used to only measure how much fume is produced from a given welding process. Oxygen and fuel gas cylinders should be separated during storage by at least: - ans -----6 m (20 ft) or else by a 1.5 m (5 ft) high wall with a minimum ½ hour fire rating. Robotic work envelope refers to: - ans -----all points that could be reached by the robotic arm. Ionizing radiation emitted by x-rays or gamma rays used in radiography of welds: - ans -----can damage living cells. Radiation emitted by a welding arc is: - ans -----an ionizing type. What type of fire is a Class D fire extinguisher used for? - ans -----Metal and metal alloys