Specialty Systems Flashcards

1
Q

What is the definition of a class B fire

A

Fires involving flammable liquids, gases, gasoline and oils based products

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2
Q

What joining procedure is used for plastic piping on a natural gas system

A

Thermal fusion

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3
Q

What is the minimum ground cover for underground gas piping

A

400mm - 16”

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4
Q

Which Color coding is used for medical gas

A

Black and white

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5
Q

What is the minimum required space around the handle of a fir hose cabinet valve for proper operation

A

1”

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6
Q

Which term is used to describe a complete recirculation of swimming pool water

A

Rate of turnover

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7
Q

What must be known to size a lawn irrigation system for proper sprinkler coverage

A

Size of water service piping, size of water meter and dynamic water pressure

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8
Q

What piping material would be under in dariy farm conveying milk

A

Stainless steel

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9
Q

What type of piping connections would be used in process piping system where frequent replacement of pipe sections is required

A

Flanged

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10
Q

What type of fire extinguisher is accepted as a multi-purpose

A

Dry chemical

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11
Q

A class “A” fire would involve what?

A

Paper and textiles

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12
Q

What is a class C fire

A

Energized electrical equipment

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13
Q

What is the meant by lock out

A

Electrical equipment will have its energy source securely removed while being worked on

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14
Q

To unsure equipment does not start up after lock out a worker must do what??

A

Leave a tag before shutdown starts

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15
Q

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

A

8 plumbers

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16
Q

Radon venting flow from roof line to the basement needs what

A

Gooseneck, exhaust fan sensor

17
Q

What degree is required for a flared joint on copper tubing

A

45•

18
Q

How many 1” stream line branches maybe served by a 3” steam header

A

9 branches

19
Q

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

A

30 hrs

20
Q

What is the name of the valve used so the fire department connections will remain dry ( frost proof) when not in use

A

Ball drip

21
Q

How many tests are done on a medical gas system

A

5

22
Q

What is the minimum vacuum pressure in a medical gas system

A

16 Hg

23
Q

What is the testing pressure of a vacuum line in a med gas system

A

Minimum of 60 psi

24
Q

What is the testing pressure of all gases in a med gas system ( not a vacuum line)

A

1.5 times the working pressure

25
Q

What type of compressor must be used for the cross connection test in a medical gas system

A

Oil free compressor

26
Q

Minimum size for a gas line is what ( med gas )

A

1/2”

27
Q

What is the minimum sized line for vacuum ( med gas)

A

3/4”

28
Q

What is the only allowed pressure drop in the med gas system

A

Pressure drop due to ambient tempature

29
Q

What is the differential pressure minimum between gasses during cross connection test

A

5 psiD

30
Q

After a cross connection test what must be the line purged with

A

Purged with med gas

31
Q

Where is a concentration test done

A

The most remote outlet

32
Q

What does DISS stand for

A

Diameter index safety system

33
Q

NOTE QUESTIONS/HELPFUL KNOWLAGE

A

A fire = think agriculture (wood, paper & textiles
B fire = think Barrel! Like a barrel of oil and gas
C fire = think electrical circuit
D fire = think dense.. metals - D fire is a metal fire

34
Q

Where would a manometer be installed on a Radon pipe system?

A

Underneath the fan