NFPA 24 Test (TFM10) Exam Questions And Answers Verified 100% Correct

NFPA 24 Test (TFM10) Exam Questions And Answers Verified 100% Correct more than 36 inches - ANSWER The center of a hose outlet shall not be _______ above final grade less than 150 psi - ANSWER All piping used in private fire service mains shall be rated for the maximum system working pressure to which the piping is exposed to but shall not be rated at _______________ asphalt or other corrosion-retarding material - ANSWER All bolted joint accessories shall be cleaned and thoroughly coated with _______________ after installation not be less than 30 inches - ANSWER In locations where freezing is not a factor, the depth of cover shall __________________ below grade to prevent mechanical damage. minimum depth of 36 inches - ANSWER Private fire service mains installed under driveways or roadways shall be buried at a ______________ run in a covered trench - ANSWER Where private fire mains extend more than 10 ft into the building, they shall be ___________ 1 part cement, 2 1/2 parts sand, and 5 parts stone - ANSWER Thrust blocks shall be concrete of a mix not leaner than ______________ not less than 5/8 in diameter - ANSWER Rods shall be _____________ shall be cleaned and thoroughly coated with a bituminous or other acceptable corrosionretarding material - ANSWER After installation, rods, nuts, bolts, washers, clamps, and other restraining devices _____________________ restrained at the bottom of a hill and at any lateral or vertical turns - ANSWER Pipe shall be _____________________ facing uphill - ANSWER Bell ends shall be __________ clear of debris - ANSWER The flushing operation shall continue until water flow is verified to be ___________ completing and signing the contractors material and test certificates - ANSWER The installing contractor shall be responsible for _______________________ gauge pressure of 200 psi or 50 psi above working pressure for 2 hours - ANSWER All piping shall be hydrostatically tested at ____________________________ 10 ft/sec - ANSWER Flow required to produce velocity of __________ in pipes control valves - ANSWER ______________ do not include drain valves, check valves, or relief valves Combined Service Mains - ANSWER This standard shall apply to ______ intended to carry water for fire service mains AHJ - ANSWER Working plans shall be submitted for approval to the _____ before any equipment is installed or remodeled. Pressure-Regulating devices - ANSWER ____ shall not be used Control Valves - ANSWER ______ shall not be installed in the piping from the fire department connection to the fire service main Control Valves - ANSWER _____ shall be permitted in the system downstream of the fire department connection Check Valve - ANSWER When more than one water supply exists, a ___________ shall be installed in each connection Control Valve - ANSWER All check valves shall have a ________ installed upstream and downstream of the check valve. 40 ft - ANSWER A post indicator valve installed not less than____ from the building 32-40 inches - ANSWER Where post indicator valves are used, they shall be set so that the top of each post is _______ above final grade not be required - ANSWER Supervision of underground gate valves with roadway boxes shall ____________ not be less than 6 inches - ANSWER The connection from the hydrant to the main shall ___________ not less than 40 ft - ANSWER Hydrants shall be located _________ from the buildings to be protected flat stones, concrete slabs, or other approved material - ANSWER Hydrants shall be installed on __________ less than 18 inches - ANSWER The center of a hose outlet shall not be ____________