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Easter Eggs > Gas > Flashcards

Gas Flashcards

1
Q

The most common Manifold is

A

3.5” of water colum

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2
Q

What are the two things that dictate the state of the matter

A

Pressure and temperature

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3
Q

Transmission pipeline

A

Plant to utility

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4
Q

Distribution piping

A

Utility to customers

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5
Q

Production pipeline

A

Well head to plant

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6
Q

What is added to natural gas to give the odour

A

Ethyl Mercaptan

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7
Q

At what rate is Ethyl Mercaptan added ?

A

Ethyl Mercaptan is added at a rate of 1pound per 1 million cubic feet in natural gas

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8
Q

What is the maximum allowable pressure into single family home for propane in Alberta

A

2 psi (56” w.c)

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9
Q

What is the volume expansion from liquid to vapour for propane

A

270 times out of

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10
Q

What is the volume expansion from liquid to vapour for water

A

1700 times

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11
Q

Specs for appliances in garage

A

Must be at least 18” (450mm) above floor level for residential and 54” (1400mm) for repairs garage

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12
Q

Can heat exchanger in residential units be repaired

A

It can only be repaired temporarily upon approval and replaced

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13
Q

Can heat exchanger be repaired in a commercial unit

A

Can be repaired and need approval

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14
Q

What is considered to be high altitude elevation

A

Between 2000feet to 4500feet. Reduction of 10% then 4% every 1000 feet

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15
Q

What are pipe dope and teflon tape considered to be

A

Considered to be lubricants

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16
Q

Maximum high limit switch by code

A

250F

17
Q

Range of flammability for propane

A

2.3% to 9.5%

18
Q

What happen in a diaphragm gas valve when the relief port is blocked

A

Gas valve will remain closed

19
Q

What position does the actuator diaphragm gas valve end up if the diaphragm ruptures.

A

The actuator remain in the open position.

20
Q

On a 66’ tall pipe with a pressure of 65psi at bottom. What would be the pressure at the top.

A

.433 psi. Pressure of water for 1 feet

66 x .433 psi = at top lost
28.578 = loss at top
65 - 28.578 = 36.42 psi at top

21
Q

What is the most typical material to supply mid efficient appliances combustion air

A

Flex with approved label on it.

22
Q

How far away minimum must a combustion air intake terminate from a car park

A

36” away

23
Q

What distance from ground level minimum must a combustion air vent terminate

A

12”

24
Q

What type of venting is used for high efficient oil furnace

A

The venting is L

25
Q

Leak limiting device on regulator allow for maximum of

Propane
Natural gas

A

1 cubic feet for propane
2.5 cubic feet natural gas

26
Q

What is the specific name of the support for vertical riser pipe

A

Riser clamp

27
Q

What is the penalty apply for chimney liner

A

20% penalty

28
Q

On gas line at pressure above 2psi what must be done in consideration of fittings

A

Equivalent line resistance need to be added

29
Q

How do you identify the gasket in a compression fitting or a grooved pipe fitting

A

Color Coating

30
Q

Propane can be filled up to ?

A

80% of volume or 42% of water capacity

31
Q

How many cubic feet of propane can you get from 1 imperial gallon

A

44 cubic feet

32
Q

Hydrostatic pressure valve range

A

375 psig (2500kpa) to 500psig (3500kpa)

33
Q

Maximum amount of support legs on horizontal propane tank

A

2 maximum

34
Q

What type of valve is used on propane tank for liquid withdrawal

A

Excess flow valve

35
Q

How far does a 7500L have to be from a masonry wall

A

10ft

36
Q

Clearance from adjacent propane tank on residential setting

A

3ft or 1m

37
Q

What material is not allowed for propane liquid

A

Polyethylene

38
Q

What is over tightening a gas line called

A

Creeping

39
Q

What is allowed for sched 80 and 40 over 125psig pressure

A

Sched 80 for threaded
Sched 40 for welded

Easter Eggs (5 decks)

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