CWB Module Exam Questions With 100% Correct Answers Latest Update 2024 Graded A+

CWB Module Exam Questions With 100% Correct Answers Latest Update 2024 Graded A+. Creating a safe working environment is strictly the responsibility of the employer? - Correct Answer-False, it the the joint responsibility of the employer and employee. WHMIS stands for: a) Workers Health Monitoring System b) Workplace Hazardous Materials Information System c) Workers for a Healthy Manufacturing Industry Society - Correct Answer-b) Workplace Hazardous Materials Information System What are three ways that WHMIS information is conveyed to the workplace? - Correct Answer-1. Training 2. Labels 3. MSDS (Material Safety Data Sheet) If you wish to find out the hazardous ingredients of a product and their toxicological properties, where would you look? - Correct Answer-MSDS (Material Safety Data Sheet) Is there a Canadian Standard for safety in welding? - Correct Answer-Yes, CSA W117.2 What is the typical three-phase input voltage to welding machines in most shops? - Correct Answer-USA: 480V CA: 600V True or False? The voltage on the secondary side of welding machines is always so low there can never be a danger of electric shocks? - Correct Answer-False Why is it possible to still get an electric shock by touching only one wire of an electric circuit? - Correct Answer-The current can pass through the body and return through the ground. True or False? The cable from the workpiece back to the welding machine is correctly called the "ground lead" - Correct Answer-False, it is called the work lead. Why should you avoid welding with wet hands or when standing in water? - Correct Answer-Water increases the contact resistance and increases the risk of a shock. CWB Module 1 Questions With 100% Correct Answers Latest Update Graded A+ Of the two classes of radiation, which is the one that can damage living cells? Give two examples. - Correct Answer-Ionizing radiation. Examples: X-rays or Gamma-rays. Which of the following operations emits this type of radiation? a) shielded metal arc welding b) arc cutting c) radiography of welds d) resistance welding - Correct Answer-c) radiography of welds Is it true that you could suffer from "sunburn" on exposed skin by just being near a welding arc? - Correct Answer-Yes, true. What is the suggested shade number for a welder's helmet when using 5/32 in SMAW electrode at 150A? - Correct Answer-10 Which of the following situations is most likely to produce the greatest amount of direct and reflected ultraviolet light? a) resistance welding two thin steel sheets b) gas metal arc welding aluminium plate c) submerged arc welding - Correct Answer-b) gas metal arc welding aluminium plate True or False? Facepiece respirators with mechanical filters will remove all fumes and gases emitted in welding. - Correct Answer-False, Gases are not removed. Most fumes will be removed but not 100% Approximately how far could spatter travel when welding or cutting on structure about 2.5 m high? a) Possibly up to 6 m b) no more than 1 m c) up to 20 m - Correct Answer-a) Possibly up to 6 m What is the suggested shade number for a welder's helmet when using >1/4 in SMAW electrode at 500A? - Correct Answer-11 What is the suggested shade number for a welder's helmet when using 3 in SMAW electrode at 150A? - Correct Answer-8 What is the suggested shade number for a welder's helmet when using < 3/32 in SMAW electrode at 50A? - Correct Answer-7 What is the suggested shade number for a welder's helmet when using GMAW/FCAW/MCAW at 60-500A? - Correct Answer-10 What is the suggested shade number for a welder's helmet when using GMAW at <60 A? - Correct Answer-7 What is the suggested shade number for a welder's helmet when using GTAW at <50- 150 A? - Correct Answer-8 What is the suggested shade number for a welder's helmet when using GTAW at 150- 500 A? - Correct Answer-10 What is the suggested shade number for a welder's helmet when air carbon arc cutting light at <500 A? - Correct Answer-10 What is the suggested shade number for a welder's helmet when air carbon arc cutting heavy at 500 - 1000 A? - Correct Answer-11 What is the suggested shade number for a welder's helmet when plasma arc cutting and gouging very light at 20 A? - Correct Answer-5 What is the suggested shade number for a welder's helmet when plasma arc cutting and gouging light at 20 - 100 A? - Correct Answer-8 What is the suggested shade number for a welder's helmet when plasma arc cutting and gouging medium at 100 - 400 A? - Correct Answer-8 What is the suggested shade number for a welder's helmet when plasma arc cutting and gouging heavy at 400 - 800 A? - Correct Answer-10 What is the suggested shade number for a welder's helmet when oxygen cutting at plate thickness (light) of <25mm/ <1in? - Correct Answer-3 What is the suggested shade number for a welder's helmet when oxygen cutting at plate thickness (medium) of 25-100mm/ <1-6in? - Correct Answer-4 What is the suggested shade number for a welder's helmet when oxygen cutting at plate thickness (heavy) of >150mm/ >6in? - Correct Answer-5 For the SMAW process, which contributes more to the production of fume: base metal or electrode? - Correct Answer-electrode Some copper alloys contain a very toxic component. What is it? - Correct AnswerBeryllium Which of the following processes is likely to have the greatest fume generation rate? a) SMAW b) SAW c) FCAW - Correct Answer-c) FCAW Industrial hygienists often refer to allowable exposure to fumes in terms of the TLVTWA. What do the letters TWA stand for and what do they mean? - Correct AnswerTime Weighted Average. Average concentration over 8 hour day / 40 hour work week. True or False? The TLV for welding fume is 5mg/m3. It does not matter what is in the fume as long as the concentration is below this level. - Correct Answer-False. The components, either individually or as a group, could exceed their TLV levels even though the total fume level is below 5mg/m3. What label/class? Materials such as carbon dioxide and argon that are gases at room temperature (20C) and are kept under pressure. - Correct Answer-Class A- Compressed Gas (e.g. Welding gases in cylinders) What label/class? Materials that will ignite and continue to burn when exposed to a flame. A flammable liquid is one with flash point less than 27.8C (100F) and a combustible liquid is one with a flash point greater than 37.8C. The flashpoint is the minimum temperature at which the liquid gives off enough vapour to ignite; the lower the flash point, the greater the fire hazard. - Correct Answer-Class BFlammable and Combustible (e.g. Flammable: Gasoline, ethyl alcohol, acetylene; Combustible: Kerosene, creosote, diesel fuel) What label/class? Materials, such as oxygen or potassium chlorate, which will cause another to burn. - Correct Answer-Class C- Oxidizing. (e.g. oxygen or potassium chlorate) What label/class? Materials causing immediate serious toxic effectrs when taken into the body? - Correct Answer-Class D- Poisonous and Biohazardous Infectious (e.g. Carbon monoxide) What label/class? Materials causing other toxic effects such as long-term effects on health. Carcinogens (cancer causing substances) - Correct Answer-Class D- Poisonous and Biohazardous Infectious (e.g. Welding fumes) What label/class? Materials/Organisms causing infection deseases (bacteria and viruses) - Correct Answer-Class D- Poisonous and Biohazardous Infectious (e.g. Hepatitis B) What label/class? Materials that will destroy human tissue and other materials? - Correct Answer-Class ECorrosive (e.g. sulphuric acid, caustic soda) What label/class? Materials that cause a chemical reaction with another substance or self-reaction, when heated or pressurized, may create a hazard. A metal that produces a poisonous gas on contact with water. - Correct Answer-Class F- Dangerously Reactive (e.g. acetylene) Which of the following may be classified as hazardous and come under the WHMIS? a) oxygen and other gases b) welding consumables c) materials to be welded - Correct Answer-all Product labels must be placed where? - Correct Answer-container or package of the product Name 3 types of information that must be stated on the supplier labels? - Correct Answer-Product identifier supplier identifier MSDS statement hazardous symbol risk phrases precautionary measures first aid measures distinct WHMIS border English and French Name the 3 minimum statements that must be provided on supplier labels? - Correct Answer-product identifier safe handling instructions MSDS statement The MSDS contains 9 categories of information, name 3. - Correct Answer-hazardous ingredients preparation information product information physical data fire or explosion hazard reactivity data toxicological properties preventative measures first aid measures The employer must ensure that the most current MSDS is abailable to all workers. How often does it need to be updated? - Correct Answer-Every 3 years. Name 5 hazards that can be caused during welding operations. - Correct Answerelectric shock radiation burns, fires and explosions fumes gases noise electromagnetic forces