Sprinkler 5 Test Questions and Complete
Solutions Graded A+
The most hydraulically demanding area - Answer: When designing a system useibf ESFR sprinklers m, the
number of design sprinklers must includes
Psi per foot - Answer: Friction loss is always expressed in
Roughness of the inside of the pipe - Answer: The C-factor is a term used to classify the
22.5 - Answer: If a sprinkler in a light hazard area of operation were spaced at the maximum of 225
square feet and calculations were based on .10 gpm/sqft density over 1500 sqft, the required flow
would be —- gpm
.433 - Answer: The pressure loss per foot of elevation increase is —-psi
Larger piping than stronger water supplies - Answer: Weak water supplies require—- to offset pressure
losses
50 - Answer: Failure to adequately inspect and maintain the fire protection system accounts for at least
—- percent of system failures
390 - Answer: When flushing the underground piping, the minimum flushing rate for 4 inch pipe is —-
gpm
10 - Answer: When flushing underground piping, a velocity of at least —- feet per second is necessary
for scouring the pipe
Returned to inventory - Answer: When it is apparent that there is too much material remaining on the
job site, the excess should be
, Are normally shipped to the job site and attached to the pipe during installation - Answer: Grooves
fitting and coupling
The customer, the fire department, and possibly the insurance company - Answer: If the system cannot
be placed back into service after a service call , the sprinkler contractor should notify
Toxic fumes - Answer: Because heating and cutting metals can create —-, always perform cutting
operations in a well ventilated area
Base - Answer: When using a fire extinguisher, you should aim at the —- of the fire
Fractions - Answer: Whole numbers are complete units without —- or decimals
Difference - Answer: Subtracting one number from another is finding the —- between them
52 - Answer: If you have 364 boxes of sprinkler heads that must be divided equally amongst 7 jobs sites,
how many boxes does each site get
2 quarts - Answer: The permissable leakage on newly underground pipe is a maximum of —- per hour
per 100 pipe joints, regardless of the pipe size
Annually - Answer: A main drain test on wet sprinkler systems must be conducted—- per NFPA 25
requirement
Note the problem on the inspection report and recommend that the devices be removed - Answer: If a
fire sprinkler inspector notices that other system devices( such as electrical conduit) are supported from
sprinkler piping, the inspector should
NFPA 25 - Answer: The NFPA standard for the inspection, testing, and maintenance of water-based fire
protection systems is
Solutions Graded A+
The most hydraulically demanding area - Answer: When designing a system useibf ESFR sprinklers m, the
number of design sprinklers must includes
Psi per foot - Answer: Friction loss is always expressed in
Roughness of the inside of the pipe - Answer: The C-factor is a term used to classify the
22.5 - Answer: If a sprinkler in a light hazard area of operation were spaced at the maximum of 225
square feet and calculations were based on .10 gpm/sqft density over 1500 sqft, the required flow
would be —- gpm
.433 - Answer: The pressure loss per foot of elevation increase is —-psi
Larger piping than stronger water supplies - Answer: Weak water supplies require—- to offset pressure
losses
50 - Answer: Failure to adequately inspect and maintain the fire protection system accounts for at least
—- percent of system failures
390 - Answer: When flushing the underground piping, the minimum flushing rate for 4 inch pipe is —-
gpm
10 - Answer: When flushing underground piping, a velocity of at least —- feet per second is necessary
for scouring the pipe
Returned to inventory - Answer: When it is apparent that there is too much material remaining on the
job site, the excess should be
, Are normally shipped to the job site and attached to the pipe during installation - Answer: Grooves
fitting and coupling
The customer, the fire department, and possibly the insurance company - Answer: If the system cannot
be placed back into service after a service call , the sprinkler contractor should notify
Toxic fumes - Answer: Because heating and cutting metals can create —-, always perform cutting
operations in a well ventilated area
Base - Answer: When using a fire extinguisher, you should aim at the —- of the fire
Fractions - Answer: Whole numbers are complete units without —- or decimals
Difference - Answer: Subtracting one number from another is finding the —- between them
52 - Answer: If you have 364 boxes of sprinkler heads that must be divided equally amongst 7 jobs sites,
how many boxes does each site get
2 quarts - Answer: The permissable leakage on newly underground pipe is a maximum of —- per hour
per 100 pipe joints, regardless of the pipe size
Annually - Answer: A main drain test on wet sprinkler systems must be conducted—- per NFPA 25
requirement
Note the problem on the inspection report and recommend that the devices be removed - Answer: If a
fire sprinkler inspector notices that other system devices( such as electrical conduit) are supported from
sprinkler piping, the inspector should
NFPA 25 - Answer: The NFPA standard for the inspection, testing, and maintenance of water-based fire
protection systems is
