【Daily Question】Registered Safety Engineer 2022.06.23

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Theoretically, there are three main principles for preventing fires and explosions, the most important of which is to fundamentally suppress the formation of combustion-explosion systems. Which of the following measures are intended to prevent the occurrence of fires and explosions? ( ) A. Control open flames and high surface temperatures B. Install fire alarm systems C. Establish fire and explosion barriers D. Safety monitoring and interlocking ●Correct answer: D Knowledge point: Chapter 5 > Section 4 > Prevention of fires and explosions involving hazardous chemicals (must be mastered) Explanation: Methods to prevent the occurrence of combustion and explosions include substitution, sealing, inert gas protection, ventilation and displacement, as well as safety monitoring and interlocking. Fires have various degrees of sensitivity, among which the one that belongs to mechanical sensitivity is ( ). A. Impact sensitivity B. Radio frequency sensitivity C. Friction sensitivity D. Laser sensitivity E. Pinprick sensitivity ●Correct answers: A, C, E Knowledge point: Chapter 4 > Section 4 > Basic knowledge of safety in the production of civil explosives (must be mastered) Explanation: Civil explosives have various types of sensitivities, including flame sensitivity, heat sensitivity, mechanical sensitivity (impact sensitivity, friction sensitivity, pinprick sensitivity), electrical sensitivity (AC/DC electrical sensitivity, static electricity sensitivity, radio frequency sensitivity), light sensitivity (visible light sensitivity, laser sensitivity), shock wave sensitivity, and detonation sensitivity. Disaster alarm controllers can be classified into () according to their different uses. A. Local fire alarm controller B. Centralized fire alarm controller C. General-purpose fire alarm controller D. Interconnected fire alarm controller E. Integrated control fire alarm controller Correct answers: A, B, C. Knowledge point: Chapter 4 > Section 5 > Fire protection facilities (must be mastered). Reference explanation: Fire alarm controllers can be classified into three basic types based on their intended use: local fire alarm controllers, centralized fire alarm controllers, and general-purpose fire alarm controllers.