The safety and validity of the alarm system and the adequacy of the electrical resources feeding it must be checked on an ongoing basis by testing the system on regular dates, with all persons inside the building informed of the dates of these experiments, provided that the devices return to their condition after the experiments.
These systems are the most common and famous among the systems, as they are used in public institutions, roads, private property insurance, and military institutions with the aim of securing and following up the place to be protected first and foremost.
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Clean extinguishing media (gases) include halons, halon alternatives, and inert gases, and these gases are used in complete immersion fire extinguishing systems for sealed areas to avoid exposing the occupants of these areas to severe health damage that may lead to death
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