NICET ITWBS Level III Practice Questions - NICET Inspection And Testing Of Water-Based Systems Level III Exam

On a double interlock preaction system, water is admitted to the system piping only when:

The detection system operates or supervisory air pressure is lost, whichever occurs first Both the detection system operates and supervisory air pressure is lost (such as from a sprinkler opening) A manual release is pulled, regardless of detection or air status The fire department connection is pressurized by a pumper

Correct Answer:

Both the detection system operates and supervisory air pressure is lost (such as from a sprinkler opening)

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