The provisions of this standard (NFPA 17A Standard for Wet Chemical Extinguishing Systems) apply to the design, installation, operation, testing, and maintenance of pre-engineered wet chemical fire-extinguishing systems that discharge wet chemical from fixed nozzles and piping by means of expellant gas.
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Lots of great information. I learned different study methods as well. Thanks to the help of Contractor Campus online courses and in person classes.
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