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Gas Code Test > BI > Flashcards

BI Flashcards

1
Q

Schedule 40 is used for pressures up to

A

125psig can exceed if welded or flanged

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2
Q

Copper G, L, K can be laid underground which are coated

A

G, L are both coated in pluethelyne resin

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3
Q

Hose and hose fittings must have a minimum pressure rating of

A

350psig

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4
Q

When BTU input isn’t on appliance it can be found

A

Online or instruction maual

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5
Q

What Gas line installation are not aloud unless with permit

A

Stairwell, chimney, elevator shafts, flue

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6
Q

2 requirements when laying gas lines in concrete flooring there must be

A

1/2” air space
Removable too that is not airtight

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7
Q

Welded fittings have to be

A

Manufactured

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8
Q

When drilling a hole on a wood member you must be how far from edge

A

2” from edge

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9
Q

Pipe dope is applied to

A

Male thread only

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10
Q

The white teflon tape is used for

A

Plumbing not gas fitting

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11
Q

When applying teflon tape you always leave

A

2 threads at start, 50% overlap

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12
Q

Threading bushings may be used on gas lines as long as they’re

A

approved

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13
Q

Gaskets used in gas systems cannot be

A

Natural rubber

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14
Q

Dirt pockets at the bottom of an appliance are used to catch

A

Dirt

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15
Q

Dirt pocket consists of three parts what are they

A

A tee
A cap
A nipple

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16
Q

The minimum depth of dirt pockets is

A

Minimum 3”

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17
Q

Defective piping cannot be serviced
True or false

A

True

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18
Q

Bushings can or cannot be installed

A

Cannot

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19
Q

Unions and swing joints

A

Loosen over time

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20
Q

The electrical code states

A

Gas pipe cannot be a conductor

21
Q

Can you use close nipple and street fittings on gas lines

A

No

22
Q

Piping can or cannot pass under a foundation or wall

A

No

23
Q

Gas piping is installed how far under your ground and how far under your driveway

A

Never less then 15”
Under driveway 24”

24
Q

All plastic gas lines must have a

A

Tracer wire

25
Q

What do the coats on copper pipe help protect

A

Corrosion from atmosphere

26
Q

Type k has no

A

Special coating

27
Q

If a gas line passes through concrete or a brick wall it must be

A

Sleeved or have double wrapping

28
Q

Gas lines should be painted or banded what color and marks shouldn’t exceed in commercial

A

Yellow and 20ft

29
Q

Mark on residential shouldn’t exceed

A

6ft

30
Q

A gas cock is located and is

A

50 ft away and is tagged

31
Q

Whenever piping goes building to building it must have

A

Approved shut off valves

32
Q

When a hose is used in a permanent installation it shall not exceed

A

10 ft and cannot pass room to room

33
Q

Hose temperatures shouldn’t exceed

A

125°F

34
Q

Can hoses be replaced

A

No

35
Q

Flexible metallic hoses are used in

A

Commercial and industrial

36
Q

All gas hoses and hose fittings must be approved for what pressure

A

350psig

37
Q

Gas regulations are under what CSA code

A

149.1 and 149.2

38
Q

Can installations be closed without inspection

A

No

39
Q

The pressure gauge used to test is minimum

A

3”

40
Q

The maximum range of the gauge shall exceed what but no

A

15%-300%

41
Q

Any gas line that is less then 20 ft and has a gas pressure below .5psig can be

A

Leak tested rather then pressure tested

42
Q

When purging gas lines 4” NPS and larger any air pressure test must first be

A

Purged with inert gas before any gas is aloud in the line

43
Q

The purge point on a gas line outdoors shouldn’t be closer then

A

10 ft to a building with the an air take

44
Q

Safety is who’s responsibility

A

Yours

45
Q

Finished piping will be tested under normal working pressure with soapy water for

A

10 minute meter dial test

46
Q

Minimum test for rough piping is

A

15 Psig for 15 minutes

47
Q

Maximum pressure drop allowed for low pressure natural or propane installations is

A

1”WC

48
Q

The minimum test gauge size is

A

3”

Gas Code Test (4 decks)

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