Fire Protection Systems fully solved 2023 already passed rated A+

Fire Protection Systems fully solved 2023 already passed rated A+ Identify and explain the reliability of automatic sprinkler systems, and identify the reasons for unsatisfactory performance. - correct answer Automatic sprinklers are recognized the most reliable of all fire protection devices. 96% effective. Only in rare instances do automatic sprinkler systems fail to operate. Some reasons include: i. Partially or completely closed main water control valve ii. Interruption to the municipal water supply iii. Damaged or painted over sprinklers iv. Frozen or broken pipes v. Excess debris or sediment in the pipes vi. Failure of a secondary water supply vii. Tampering or vandalism viii. Sprinklers obstructed by objects stacked too close 1. Need to have 18" space ix. Closed valves, Inadequate water supply, blocked heads, fire load changes, partial protection and poor maintenance are reasons systems fail. (Sprinkler class) When given a sprinkler head in serviceable use, demonstrate knowledge of how an automatic sprinkler head opens and releases water. - correct answer a. Sprinklers discharge water after the release of a cap or plug that is activated by some heat- response element. Sprinklers are usually identified by the temperature they are designed to operate at, usually color coding, or stamping the temperature. b. Composed of: a body which includes the orifice (opening), a release mechanism that holds a cap in place over the orifice (fusible link, frangible blub, chemical pellet) and a deflector that direct the water in a spray pattern When given the necessary equipment, effect a temporary stop of the flow of water from a sprinkler head. - correct answer Sprinkler wedges (wedge, tapered, tong) b. Remember order to shut down the system should only come from the IC and can usually be done by closing the main control valve (OS&Y, PIV, WPIV, PIVA)