Safety Technology Exchange Edition: Daily Question (2016.8.13)
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Daily Question (Single-choice): 1. To ensure safety during maintenance work that involves heating or working inside equipment, flammable, explosive, toxic, and harmful gases present in all equipment and pipelines within the maintenance area must be removed. When using an inert gas as a displacement medium, it is necessary to ensure that the amount of inert gas used is at least 3 times the volume of the medium to be displaced. However, whether the replacement is thorough and whether the replacement process meets safety requirements should ultimately be determined based on ______ to decide if it is qualified. A. Replacement time B. Amount of medium used C. Sampling and analysis D. Temperature changes 2. During accident rescue and emergency repair operations, it is very important to choose the appropriate personal protective equipment to prevent toxic and harmful substances from entering the body, especially respiratory protection devices. However, each type of respiratory protection device has its specific range of use. For mobile operations in environments with high concentrations of toxic gases, unknown toxicity, or oxygen deficiency, ______ should be chosen. A. Isolated air supply long tube B. Self-sufficient oxygen (gas) supply respirator C. Filtered full-face mask D. Filtered half-face gas mask C B
Daily Question (Single-choice question) 1. To ensure safety during maintenance work involving open flames and operations inside equipment, flammable, explosive, toxic, and harmful gases present in all equipment and pipelines within the maintenance area must be removed. When using an inert gas as a displacement medium, it is necessary to ensure that the amount of inert gas used is at least 3 times the volume of the medium to be displaced. However, whether the replacement is thorough and whether the replacement process meets safety requirements should ultimately be determined based on ___C___ to decide if it is qualified. A. Replacement time B. Amount of medium used C. Sampling and analysis D. Temperature changes 2. During accident rescue and emergency repair operations, it is very important to choose the appropriate personal protective equipment to prevent toxic and harmful substances from entering the body, especially respiratory protection devices. However, each type of respiratory protection device has its specific range of use. For mobile operations in environments with high concentrations of toxic gases, unknown toxicity, or oxygen deficiency, __B____ should be chosen. A. Isolated air supply long tube B. Self-sufficient oxygen (gas) supply respirator C. Filtered full-face mask D. Filtered half-face gas mask
1. To ensure the safety of work involving hot work during maintenance and operations inside equipment, flammable, explosive, toxic, and harmful gases present in all equipment and pipelines within the maintenance area must be removed. When using an inert gas as a displacement medium, it is necessary to ensure that the amount of inert gas used is at least 3 times the volume of the medium to be displaced. However, whether the replacement is thorough and whether the replacement process meets safety requirements should ultimately be determined based on __C____ to decide if it is qualified. A. Replacement time B. Amount of medium used C. Sampling and analysis D. Temperature changes 2. During accident rescue and emergency repair operations, it is very important to choose the appropriate personal protective equipment to prevent toxic and harmful substances from entering the body, especially respiratory protection devices. However, each type of respiratory protection device has its specific range of use. For mobile operations in environments with high concentrations of toxic gases, unknown toxicity, or oxygen deficiency, __B____ should be chosen. A. Isolated air supply long tube B. Self-sufficient oxygen (gas) supply respirator C. Filtered full-face mask D. Filtered half-face gas mask