Inspection, Testing & Maintenance Flashcards
When was the first edition of NFPA 25 created
1992
“Approved” in NFPA means
Acceptable to AHJ
“Shall” in NFPA means
Has to be done
“Should” means in NFPA
Recommend practise
What are the 3 deficiency levels
Non-Critical
Critical
Impairment
Non-Critical deficiency means
It would not stop the sprinkler system from working
Critical deficiency means
Could stop sprinkler system from operating properly
Impairment means
System will not work at all
2 kinds of impairment are
Emergency impairment and pre planned impairment
Inspection means
Visual examination from ground level
Test means
Operation of a device/system to verify operation
What chapter in NFPA 25 is specifically for building owners
Chapter 4
Sprinklers inspected from floor level
_________.
Annually
Pipe and fittings inspected
Annually
Hangers inspected
Annually
Water flow alarms (electronic) inspected
Quarterly
Supervisory devices inspected
Quarterly
Hydraulic data plate inspected
Annually
Standard sprinklers require testing every ___ years
50
Sprinklers prior to ______ must be replaced
1920
Fast response sprinklers require testing every ____ years
20
Sprinklers in harsh environments require testing every ___ years
5
Dry sprinklers require testing every ____ years
10
How many heads will be sent for testing
4 heads or 1% of total heads
What device tests the heads
Plunge test apparatus
Water flow alarms (mechanical) to be tested
Quarterly
Water flow alarms (electronic) to be tested
Semi-Annual
Anti-freeze systems tested
Annually
Where are anti freeze systems tested from
Remote testing points
What devices are used to test anti freeze solution
Prism refractometer
Digital refractometer
Sprinklers protecting commercial cooking equipment shall be replaced
Annually
Hose houses inspected
Quarterly
What must be done when a fire hydrant has been replaced
Hydrostatic test, water flow test, proper drainage
Oil & filter must be replaced on a diesel engine fire pump driver
Annually or 50 hours
How much fuel must be maintained in a diesel fuel tank
2/3rds
Steel storage water tanks w/o corrosion protection must be inspected
Every 3 years
Unsupervised tank heating heating system to be inspected
Daily
What must be done if Voids are discovered below the floor of tanks
Be filled with grout or sand
When is fire watch required during impairment
When a system is out of service for more then 10 hours in a 24 hour period
Where shall impairment tags be placed
FDC, system control valve, any other location required from AHJ
Non critical deficiency tag colour
Yellow
Critical deficiency tag colour
Orange
Impairment tag colour
Red
Two methods for flushing sprinkler piping are
Hydraulic method (flushing to ends of main and lines)
hydro-pneumatic method (through flushing connections back to riser)
Hydrants to be inspected
Annually (warm weather)
Reduced pressure assemblies & reduced pressure detector assembly to be visually inspected
Weekly (ensure differential sensing valve is not continuously discharging)
Valves in locked position to be inspected
Monthly
Gauges(air) are to be inspected
Monthly
Gauges must be accurate within
3% of the full scale
Gauges require replacement or testing every ____ years
5
Hydraulic name plate inspected
Quarterly
FDC inspected
Quarterly
When shall the valve tamper switch send an alarm
Within 2 revolutions of a hand wheel or 1/5th of stem has moved from normal position
Vane type and pressure switch type water flow devices should be tested
Semi annual
When is each valve operated through is full range of motion
Annually
Post indicator valves are opened until
Spring or torsion is felt in the rod
Main drain test should be conducted
Annually
Minimum temp for wet system and dry system enclosure
40F or 4C
Main drain test should be conducted whenever
A main control valve is closed
When sprinklers are 75+ years old, testing should occur at
5 year intervals
Internal piping inspections should occur whenever
Debris are known or believed to be in system
Dry pipe valve, (external) enclosure, trim, and other related components should be externally inspected
Monthly
Priming level should be checked
Quarterly
Low air pressure alarms should be tested
Quarterly
QOD tested
Quarterly
What type of water flow devices are prohibited with dry pipe valves
Vane type
Pressure switch type water flow devices need to be tested at least
Semi annually
Each DPV should be trip tested
Annually (partial trip test)
Ice plug investigations should occur
Annually
Air maintenance device to be tested
Annually
DPV full flow trip test every
3 years, or whenever the DPV has been altered
Air leakage test every
3 years
Air leakage test consist of
1) 40 psi for 2 hours (3psi max loss)
2)normal system pressure for 4 hours, no low air pressure alarm
Strainers, filters, restricted orfice is to be inspected internally every
5 years
Internal piping system is to be inspected every
5 years
MIC stands for
Microbiologically influenced corrosion
What sealing material is permitted on clapper of DPV
Nothing. No grease or other materials are to be applied
Frequency for inspecting internals of non metallic pipe
Not required
Standpipe system flow test
5 years ( to verify the required flow and pressure at the most remote hose valve)
Max temp for room containing spare heads
100F or 38C
Fire dept. connection to be tested every
5 years
Fire dept connection is to be tested at what pressure and for how long
150psi for 2hours
Valves in sealed condition to be inspected
Weekly
Valves being supervised inspected
Quarterly
Air compressors inspected
Monthly
Dry pipe valves inspected internally
Annually
Valve room with Diesel fire pump must be at a temperature of
70F
How many heads in a head box on a site with less then 300 heads
6
How many heads in a head box with 300-1000
12
How many heads in a head box with >1000 on site
24
Minimum size flushing connection
1 1/4”
Gauges (water) to be inspected
Quarterly
