Master NFPA CWBSP Exam with Reliable Practice Questions
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High piled storage includes all storage of Group A plastic in excess of what height?
Correct : D
High piled storage of Group A plastics is typically considered to be any storage in excess of 12 feet (3.7 meters). This height threshold is set to account for the increased fire risk and challenges associated with higher stacks of combustible materials.
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A light hazard wet pipe sprinkler system using quick-response sprinklers with a 18 ft (5.58 m) ceiling would be allowed
what percentage area of reduction on the remote area?
Correct : C
In a light hazard wet pipe system with quick-response sprinklers and a ceiling height of 18 feet, a 0.32 area reduction percentage is commonly allowed for the remote area. This accounts for the lower fire load and risk associated with light hazard occupancies.
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A 4.2 K-factor sprinkler must deliver 17 gpm (692 mm/min). What pressure is required?
Correct : B
To deliver 17 gpm with a 4.2 K-factor sprinkler, approximately 9.22 psi pressure is required. This is calculated using the sprinkler's K-factor formula, which relates flow rate, pressure, and the K-factor.
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Using the Hazen-Williams formula, determine the friction loss in 150 ft (45.7 m) of 1 in. (25 mm) black steel schedule
40 pipe, flowing 30 gpm (115 lpm) in a wet system.
Correct : A
Using the Hazen-Williams formula, the friction loss in 150 feet of 1-inch black steel schedule 40 pipe flowing 30 gpm in a wet system would be approximately 27.5 psi. This calculation considers the pipe's material, size, length, and flow rate.
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What piping material is acceptable for the suction and discharge piping pressure maintenance pumps?
Correct : B
Black or galvanized steel piping is acceptable for the suction and discharge piping of pressure maintenance (jockey) pumps in fire protection systems. These materials offer the necessary strength and durability for such applications.
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