Common occupation skills Flashcards
what is the defintion of a class B fire
Liquids, Gases, gasoline or oil-based products
what sling configuration would be rated with the most capacity for a lifting procedure?
basket sling with 2 vertical legs
what procedure is used to determine if additional PPE is required for a specific task on a job site
Complete a hazard assessment
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?
18
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?
6 1/2
1/4 + 1/4= 1/2
what is the minuim ground cover for underground gas piping mm
300 or 12”
What piping would require a fire donut
ABS Piping pass through fire rated wall
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.
0.154 = (OD-ID) / 2= (2.375-2.067)/2= 0.154
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?
12” = 2inches (insulation, clearnace) (2 x 3/4inches)= 16 3/4
3/8 x 2 = 3/4
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?
90/10=9 -1 = 8
10,20,30,40,50,60,70,80
What is the following is lowest on the E.M.F (electromotive force) series?
gold
If granite has a specific gravity of 2.7 what is its approximate density
1 kg= 0.0624 LBS
1m= 35.31 ft
2.7 x 100kg
2700 x 0.0624/1/35.31= 168.48 lb/ft
The proper wrench used to tighten a flat-edged fitting is?
Spud wrench
with a power vise the only safe reamer to use is a
fluted reamer
the type of die head used on a power vise threader that doesn’t require reversing in order to disengage the pipe is called.
quick opening
guard rails when required shall be placed at _ inches
42 inches
The maximum height at which a worker can work above ground before requiring a guard rail is?
10 ft
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?
20/4 + 2overhang= 7
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?
23 ft 7 inches
3’
Center punching of concrete is done to
assess the power level needed of a power actuated tool
an ___ is best suited to anchor a piece of machinery to a concrete floor
expansion shield and bolt
which of the following knots can be used to join 2 ropes of different diameters
sheet bend
a “bowline on the bight” is tied
in the middle of the rope
When lifting a pipe with a crane, how should the tagline be attached to the pipe?
clove hitch
what type of hanger is sued to support multiple pipe lines
trapeze
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?
3m 10’
Max hanger spacing for cast iron pipe
3m 10’
max hanger spacing for copper less than 1”
2.5m 8ft
hanger spacing for pex pipe
0.8m 2.64 ft
hanger spacing for ABS OR PVC
1.2m 3.9ft
Hanger spacing for steel pipe 1 above and 1 inch under
3 & 2.5m
what is the maximum hanger spacing between a 2inch VERTICAL copper line _m
7.5m
What type of hangers are permitted to be used on a 4inch copper water line?
epoxy coated steel
if the water service is installed on the same trench as the sewer, it should be installed how
above and to one side of the sewer
under similar thermal conditions, the expansion/contraction of copper pipe is ______ than that of steel pipe
more than that of steel pipe
What type of piping is commonly used for the drain lines from a hospital laboratory?
pyrex
a good flame for oxy-acetylene brazing would be
neutral
The scale usually appears in what part of the drawing.
title block
what type of drawing does this refer to 9/a7
detail
What type of drawing does this refer to? Circle top 13
detail drawing 13 appears on same sheet
for which type of fire is water-based extinguisher used
paper and rubbish
safety nets would be provided where the falling distance is _ ft or more
25
combustion needs 3 things
fuel, heat, oxygen
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
extends 3 ft (1m)
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.
Class A
the abrasive disk on a cut off saw must not exceed its
max speed rating
supplier labels must have __ types on info in both English and french
7
2 types of fall protection
all prevention and fall arrest
the procedure for testing lockout is
make sure area clear and turn control switch on and off
Hazardous material are referred to as ___ products in the hazardous products act
Controlled
WHIMIS Stands for
workplace hazardous materials
Class A under whimis classification systems represent?
compressed gases
MSDS Always has ___ sections
9
they are __ items required by controlled products reg on a MSDS
54
Cylinders of compressed gas should not be transported without
the protective cap on the valve end
the main purpose of a GFCI is to
prevent shock to the user
the MSDS must be updated every __ years or when changed
3 years
the acronym for fighting a fire with a fire extinguisher is
PASS
What fire is for electrical, wiring panel
C
What fire is wood,paper
A
what fire is for cooking oil, animal fats
K
what fire is for metal,magnesium,chemical
D
What fire is for diesel, paint, oil , grease
B
trench drain ratio
3:4
Hard hat needs to change every ___ years
5 years
1m = mm
1000mm
1”= mm
25
1 cubic meter= L
1000 L
1M = FT
3.28 FT
