Certified Fire Protection Specialist (CFPS) — Question 23

The four operating principles of automatic sprinklers demand that they be:

Answer options

• A. mechanically simple, require little maintenance, be reliable in operation, and free from premature operation
• B. rugged, mechanically simple, reliable in operation, and free from premature operation
• C. reliable in operation, free from premature operation, capable of operation in a multitude of environments, and capable of extinguishing the involved materials
• D. mechanically simple, rugged, require little maintenance, and free from premature operation

Correct answer: D

Explanation

The correct answer is D because it specifies that automatic sprinklers should be mechanically simple, rugged, require minimal maintenance, and avoid premature operation, which align with the essential principles. Options A and B include elements like reliability but lack the emphasis on ruggedness and maintenance as specified in D. Option C introduces criteria that are relevant but do not align with the four core principles required for automatic sprinklers.