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Plumbing > Common occupation skills > Flashcards

Common occupation skills Flashcards

1
Q

what is the defintion of a class B fire

A

Liquids, Gases, gasoline or oil-based products

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2
Q

what sling configuration would be rated with the most capacity for a lifting procedure?

A

basket sling with 2 vertical legs

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3
Q

what procedure is used to determine if additional PPE is required for a specific task on a job site

A

Complete a hazard assessment

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4
Q

A 4-inch SS pipe is 86.9 ft. How many hangers are to be placed at 5.25 ft intervals and requires to support the pipe with hangers at both sides of the runs?

A

18

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5
Q

A 6” (150mm) cast iron pipe with a 1/4” 6mm wall thickness requires a sleeve. what is the minimum inside diameter of the sleeve required?

A

6 1/2
1/4 + 1/4= 1/2

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6
Q

what is the minuim ground cover for underground gas piping mm

A

300 or 12”

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7
Q

What piping would require a fire donut

A

ABS Piping pass through fire rated wall

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8
Q

if 2-inch NPS pipe has an I.D of 2.067 inches and an O.D of 2.375 inches. What is its wall thickness.

A

0.154 = (OD-ID) / 2= (2.375-2.067)/2= 0.154

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9
Q

A pipe has an I.D of 12” and a wall thickness of 3/8. if 1” of insulation is to be installed on the pipe with 1” clearance to the pipe sleeve, what is the minimum I.D of the sleeve?

A

12” = 2inches (insulation, clearnace) (2 x 3/4inches)= 16 3/4

3/8 x 2 = 3/4

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10
Q

if a horizontal pipe is 90’ feet long and requires hangers spaced every 10 ft, how many hangers would be needed, excluding those at each end?

A

90/10=9 -1 = 8

10,20,30,40,50,60,70,80

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11
Q

What is the following is lowest on the E.M.F (electromotive force) series?

A

gold

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12
Q

If granite has a specific gravity of 2.7 what is its approximate density

A

1 kg= 0.0624 LBS
1m= 35.31 ft
2.7 x 100kg

2700 x 0.0624/1/35.31= 168.48 lb/ft

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13
Q

The proper wrench used to tighten a flat-edged fitting is?

A

Spud wrench

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14
Q

with a power vise the only safe reamer to use is a

A

fluted reamer

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15
Q

the type of die head used on a power vise threader that doesn’t require reversing in order to disengage the pipe is called.

A

quick opening

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16
Q

guard rails when required shall be placed at _ inches

A

42 inches

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17
Q

The maximum height at which a worker can work above ground before requiring a guard rail is?

A

10 ft

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18
Q

if a ladder is placed agaisnt a 20’ high building, which as a 2ft overhang, how far will the base of the ladder be from the building?

A

20/4 + 2overhang= 7

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19
Q

if a ladder were set to WCB regulations how long must it be (minimum) if it were to be used to access the roof of a 20’ foot high building?

A

23 ft 7 inches
3’

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20
Q

Center punching of concrete is done to

A

assess the power level needed of a power actuated tool

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21
Q

an ___ is best suited to anchor a piece of machinery to a concrete floor

A

expansion shield and bolt

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22
Q

which of the following knots can be used to join 2 ropes of different diameters

A

sheet bend

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23
Q

a “bowline on the bight” is tied

A

in the middle of the rope

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24
Q

When lifting a pipe with a crane, how should the tagline be attached to the pipe?

A

clove hitch

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25
Q

what type of hanger is sued to support multiple pipe lines

A

trapeze

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26
Q

if a ladder were set to WCB regulations how long must it be (minimum) if it were to be used to access the roof of a 20’ foot high building?

A

3m 10’

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27
Q

Max hanger spacing for cast iron pipe

A

3m 10’

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28
Q

max hanger spacing for copper less than 1”

A

2.5m 8ft

29
Q

hanger spacing for pex pipe

A

0.8m 2.64 ft

30
Q

hanger spacing for ABS OR PVC

A

1.2m 3.9ft

31
Q

Hanger spacing for steel pipe 1 above and 1 inch under

A

3 & 2.5m

32
Q

what is the maximum hanger spacing between a 2inch VERTICAL copper line _m

A

7.5m

33
Q

What type of hangers are permitted to be used on a 4inch copper water line?

A

epoxy coated steel

34
Q

if the water service is installed on the same trench as the sewer, it should be installed how

A

above and to one side of the sewer

35
Q

under similar thermal conditions, the expansion/contraction of copper pipe is ______ than that of steel pipe

A

more than that of steel pipe

36
Q

What type of piping is commonly used for the drain lines from a hospital laboratory?

A

pyrex

37
Q

a good flame for oxy-acetylene brazing would be

A

neutral

38
Q

The scale usually appears in what part of the drawing.

A

title block

39
Q

what type of drawing does this refer to 9/a7

A

detail

40
Q

What type of drawing does this refer to? Circle top 13

A

detail drawing 13 appears on same sheet

41
Q

for which type of fire is water-based extinguisher used

A

paper and rubbish

42
Q

safety nets would be provided where the falling distance is _ ft or more

A

25

43
Q

combustion needs 3 things

A

fuel, heat, oxygen

44
Q

access for a open trench that is over 4ft in depth but less than 20ft may be a ladder that ____ the top edge of trench

A

extends 3 ft (1m)

45
Q

A fire that breaks out in the lunchroom at a job site because someone emptied the smoke pit ash tray into the garbage can would most likely be a class__ fire.

A

Class A

46
Q

the abrasive disk on a cut off saw must not exceed its

A

max speed rating

47
Q

supplier labels must have __ types on info in both English and french

A

7

48
Q

2 types of fall protection

A

all prevention and fall arrest

49
Q

the procedure for testing lockout is

A

make sure area clear and turn control switch on and off

50
Q

Hazardous material are referred to as ___ products in the hazardous products act

A

Controlled

51
Q

WHIMIS Stands for

A

workplace hazardous materials

52
Q

Class A under whimis classification systems represent?

A

compressed gases

53
Q

MSDS Always has ___ sections

A

9

54
Q

they are __ items required by controlled products reg on a MSDS

A

54

55
Q

Cylinders of compressed gas should not be transported without

A

the protective cap on the valve end

56
Q

the main purpose of a GFCI is to

A

prevent shock to the user

57
Q

the MSDS must be updated every __ years or when changed

A

3 years

58
Q

the acronym for fighting a fire with a fire extinguisher is

A

PASS

59
Q

What fire is for electrical, wiring panel

A

C

60
Q

What fire is wood,paper

A

A

61
Q

what fire is for cooking oil, animal fats

A

K

62
Q

what fire is for metal,magnesium,chemical

A

D

63
Q

What fire is for diesel, paint, oil , grease

A

B

64
Q

trench drain ratio

A

3:4

65
Q

Hard hat needs to change every ___ years

A

5 years

66
Q

1m = mm

A

1000mm

67
Q

1”= mm

A

25

68
Q

1 cubic meter= L

A

1000 L

69
Q

1M = FT

A

3.28 FT

Plumbing (12 decks)

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