Other General Questions Flashcards
When testing a antifreeze solutions, what tools are recommended?
Refractometer, or hyrdometer
Quick opening devices must be tested every _____ yrs
1
An air compressor with less than _____ cubic feet per minute at 10 PSI does not require an air maintenance device
5.5
Fast response sprinklers in service for _____ yrs shall be replaced or tested.
20
Retesting of fast response sprinklers shall occur in ____ yr intervals
10
What time shall be recorded during a main drain test?
Time for pressure to return to normal at the end of the test when closing the main drain valve
The minimum number of antifreeze samples to be tested?
2
A building has 630 sprinklers, how many should be tested?
7
Systems installed prior to Sept 30 2012, listed antifreeze solutions are not required until Sept 30 _____.
2022
The concentration of antifreeze solution is limited to _____ % glycerin by volume.
50
The concentration of antifreeze solution is limited to ____ % propylene glycol
40
Sprinklers installed prior to ____ shall be replaced.
1920
Criteria to not be considered in selection of sprinklers to be tested
Ease of access
When one sprinkler fails testing ____ % of represented sprinklers must be replaced
100
Devices that can be used to test antifreeze solutions?
Refractometer, and hydrometer
The supply valve is not opened to full flow would cause what?
A large drop in full flow pressure to be observed during a main drain test
An obstruction in the system would cause what?
A large drop in full flow pressure to be observed during a main drain test
The sole water source is through a backflow preventer, a main drain test shall be conducted at what interval?
Quarterly
True or False.
Only factory-premixed solutions are permitted
True
Sprinklers that have been in service for ____ yrs shall be replaced or tested.
50
Freezing point of solutions in antifreeze shall be tested _____
Annually
What is the correct position of valves to begin a main drain test.
Alarm control valve closed
Main drain valve open
Two main reason to perform a main drain test
Verify water supply pressure is similar to original or previous tests
Ensure the system control valve has been fully opened after annual testing.
When a ____ % reduction in full flow pressure is observed compared to the original acceptance test or previously performed tests, the cause of the reduction shall be identified and corrected.
10
When antifreeze systems have a capacity larger than 150 gallons, tests at one additional point shall be conducted for every ____ gallons shall be made
100
The lead in to a building supplies a header or manifold serving 4 systems, how many main drain tests are required?
1
After testing sprinklers the first time, testing shall be repeated every ____ yrs
10
Listed CPVC sprinkler systems shall be protected from freezing with ____ only
Glycerin
Testing a valve supervisory s/w, a signal shall indicate movement from the control valves normal position during either the first ____ revolutions or when the stem has moved 1/5th of the distance from its normal position
2
Control valve supervisory s/w shall be tested _____
Annually
Mechanical waterflow alarm devices shall be tested _____
Quarterly
A semi-auto dry standpipe without a backflow preventer shall have a main drain test _____
Annually
System demand for class 2 standpipes shall be based on _____
standards at the time of installation
Air pressure supervision at a constantly manned location, gauges are inspected _____
Quarterly
When water damage is a concern, performing an air test at _____ PSI is recommended before putting water on the system
25
A pressure loss of 5 PSI is acceptable during a 5 yr hydrostatic test.
False
During an obstruction investigation of a sprinkler system, _____ cups of scale can be flushed from the cross mains without requiring an internal inspection.
1/2 cups of scale
