Specialty Systems Flashcards
What is the definition of a class B fire
Fires involving flammable liquids, gases, gasoline and oils based products
What joining procedure is used for plastic piping on a natural gas system
Thermal fusion
What is the minimum ground cover for underground gas piping
400mm - 16”
Which Color coding is used for medical gas
Black and white
What is the minimum required space around the handle of a fir hose cabinet valve for proper operation
1”
Which term is used to describe a complete recirculation of swimming pool water
Rate of turnover
What must be known to size a lawn irrigation system for proper sprinkler coverage
Size of water service piping, size of water meter and dynamic water pressure
What piping material would be under in dariy farm conveying milk
Stainless steel
What type of piping connections would be used in process piping system where frequent replacement of pipe sections is required
Flanged
What type of fire extinguisher is accepted as a multi-purpose
Dry chemical
A class “A” fire would involve what?
Paper and textiles
What is a class C fire
Energized electrical equipment
What is the meant by lock out
Electrical equipment will have its energy source securely removed while being worked on
To unsure equipment does not start up after lock out a worker must do what??
Leave a tag before shutdown starts
There are 25 toilets to be installed in a building, each of the toilets take 2 hours to install. It takes 15 minutes to set up and 15 minutes to move to the next washroom . How many plumbers are require to complete this task in 8 hours
8 plumbers
Radon venting flow from roof line to the basement needs what
Gooseneck, exhaust fan sensor
What degree is required for a flared joint on copper tubing
45•
How many 1” stream line branches maybe served by a 3” steam header
9 branches
A plumber can dig 2 cubic feet of trench an hour, a trench 3 feet wide and 4 feet high, how long will it take 2 plumbers to dig 10 feet of trench
30 hrs
What is the name of the valve used so the fire department connections will remain dry ( frost proof) when not in use
Ball drip
How many tests are done on a medical gas system
5
What is the minimum vacuum pressure in a medical gas system
16 Hg
What is the testing pressure of a vacuum line in a med gas system
Minimum of 60 psi
What is the testing pressure of all gases in a med gas system ( not a vacuum line)
1.5 times the working pressure
