First year safety, rigging, cranes and hoists Flashcards
1
Q
Which is the most flexible wire rope core?
A
fiber core
2
Q
What are physical hazards?
A
noise, vibration, temperature, radiation, fire and high pressures
3
Q
On a WHMIS supplier label, what is the initial supplier identifier?
A
the contact info for the Canadian manufacturer or importer
4
Q
What does safety footwear protect against?
A
compression, puncture, and impact
5
Q
What are thimbles (wire rope) and what is their purpose?
A
thimbles are a steel sheave that conforms to a rope size that stops the rope from flattening (crushing) and protects the eye from wear
6
Q
How must scaffolding guard rails be constructed?
A
with a horizontal rail 0.92m - 1.07m high and another rail half way between that rail and the deck
7
Q
What must happen when an EOT is to be inspected or have maintenance done?
A
it must be LOTO and affected personnel informed
8
Q
What are chemical hazards?
A
substances (non-living) found at the workplace that cause adverse reactions to humans
9
Q
When is a 6 x 19 rope used on a EOT?
A
where abrasion is a problem
10
Q
What are the two types of hydraulic jacks?
A
- porta-power
- bottle jack
11
Q
What are rings and links used for in rigging?
A
to connect two or more sling eyes to a common point
12
Q
What are two ways that SWL calculated?
A
by taking a fraction of the breaking strength of the weakest component
OR
breaking strength ÷ safety factor
13
Q
When must your employer ensure that you wear flash resistant outer wear?
A
if the possibility of a flash fire or electrical flashover exists
14
Q
What three conditions may require the use of respiratory protective equipment (RPE)?
A
- airborne contaminants
- oxygen deficient atmosphere
- airborne biohazards material
15
Q
What is a cranes tipping point?
A
the point where the crane contacts the ground where the crane tips (think fulcrum)
16
Q
What is chemical incompatibility?
A
an unplanned and undesirable chemical reaction between two or more chemicals
17
Q
What are the three types of hazard controls?
A
- engineering
- administrative
- PPE
18
Q
What hand signal is used to lower the boom and raise the load at the same time?
A
outstretched arm, thumb down, open and close your fist
19
Q
How do you determine the stretch of a wire rope?
A
measure the wire rope diameter and compare it to a baseline measurement taken when it was new
20
Q
What are the two basic types of cranes?
A
- hydraulic
- conventional
21
Q
What can be done to a crawler mounted lattice boom crane to increase its stability?
A
extend the tracks laterally
22
Q
Which type of mobile crane is designed low to the ground and has the ability for front and read wheel steering?
A
industrial cranes
23
Q
Where is the load capacity of a chain hoist marked?
A
on the hoist
24
Q
A chain with a WLL of 10,000 lbs could be safely used to lift how many lbs?
A
10,000 lbs
25
What are the four main parts of a wire rope block?
1. shell
2. sheaves
3. centre pin
4. straps
26
What is crane leverage?
the combined values of crane weight and the distance between tipping point and the load's centre of gravity
27
What are the three pieces of information required on workplace labels (SDS)?
1. product name (must match the SDS)
2. safe handling precautions
3. reference to the SDS
28
What are the four types of metal slings?
1. wire rope slings
2. Flemish eye slings
3. chain slings
4. wire mesh slings
29
On a supplier label (SDS), what is the precautionary statement?
a standardized phrase that describes the measures to be taken to minimize the hazard
30
On WHMIS labels, what is the signal word?
a prompt to alert the worker to the severity of the hazard
31
What is the minimum ultimate load of a chain?
the minimum load that will break a new chain when a uniform load is applied to a straight length of chain
32
What are ergonomic hazards?
ergonomic hazards are the result of a job, tool, procedure, or work environment that is improperly designed for the worker
33
The OHS _______________ provides comprehensive, detailed information for employers, workers, suppliers, and government agencies.
the OHS Code
34
What is the most common wire rope classification on EOT's?
6 x 37
35
If a chain is stretched by ____%, it must removed from service.
5%
36
Which synthetic sling fibre is adversely affected by alkalis (caustic) and aldehydes (oxidized alcohols)?
polyester
37
After cutting a natural fibre rope, the ends must be whipped. What does this mean?
to be bound with fine twine to keep the ends from fraying
38
What are the two types of fibres used in man-made synthetic slings?
1. nylon
2. polyester
39
In regards to rigging and hosting, breaking strength divided by the safety factor refers to:
safe working load
40
____________ are used to safely move a load that is greater in weight than the SWL of the single rope, by providing a mechanical advantage.
blocks
41
As it relates to rigging, what is breaking strength?
the minimum load required to break that component
42
On a supplier label, what is the hazard statement?
standardized statements that describes the nature of the hazard
43
Which WHMIS hazard group contains products that can explode or light on fire?
physical hazards group
44
What is a wedge socket used for?
when you have to change a connection frequently on wire rope
45
What does wire rope consist of?
individual wires laid into strands, which then lay around a central core
46
How is SWL calculated?
breaking strength divided by safety factor
47
Which has more elasticity: nylon or polyester?
nylon
48
What are the two most common types of synthetic fibre ropes?
1. nylon
2. polypropylene
49
What are four types of protective devices for synthetic fibre slings?
1. buffer strips
2. reinforcing strips
3. edge guards of leather or webbing
4. sleeves
50
Synthetic fibre slings are available in what two materials?
1. nylon
2. polyester
51
What is a catspaw hitch used for?
attaching rope to a hook
52
How much does a hitch reduce the strength of a rope?
25% reduction
53
What are the characteristics of an ordinary designation wire rope?
all the wires are the same size
54
How much does a splice reduce the strength of a rope?
15% reduction
55
What are the characteristics of a filler wire rope?
small wires fill the spaces between the larger wires
56
What is the purpose of a sheet bend in a rope?
to join ropes of two different diameters
57
How much does a bend reduce the strength of a rope?
50% reduction
58
Chain safety factor is a comparison between what two load limits?
minimum ultimate load and working load limit
59
How much does a knot reduce the strength of a rope?
50% reduction
60
What are the characteristics of a Warrington wire rope?
outer wires are alternately larger and smaller
61
The OHS Act, Regulation, and Code are directed at which three groups that are responsible for safety in the workplace?
1. the employer
2. the employee
3. equipment or material suppliers
62
What type of material can be used for hoisting chain?
alloy steel
63
What are the three key elements of WHMIS?
1. worker education
2. product labelling
3. SDS
64
What are WSC ropes used for?
standing ropes, such as crane pendants and guy lines
65
What signal applies for boom up?
closed fist with thumb up
66
What are the common rated capacities of electric chain hoists?
1/4 to 5 tons
67
A choker hitch on a sling is rated at what percent of vertical?
75%
68
What is the wear limit for lifting chain expressed as a percentage?
10% worn = must be discarded
69
Wire rope must e discarded when the surfaces have been worn down by _________% of their original diameter.
33% or 1/3
70
What are the two employer responsibilities in regards to PPE?
1. ensures workers wear the PPE
2. ensures workers inspect the PPE
71
Which WHMIS hazard group contains products that are dangerous because the cause adverse health effects?
Health hazards group
72
Which type of synthetic sling material is adversely affected by acids and bleaching agents?
nylon
73
What are the three types of wire rope cores?
1. independent wire rope core (IWRC)
2. fibre core
3. wire strand core (WSC)
74
What are the five engineering controls used for worker protection?
1. elimination
2. substitution
3. redesign
4. isolation
5. automation
75
What two conditions will result in the removal of standing rope?
1. three or more broken wires in one rope lay
2. breaks near attached fittings such as sockets or swaged eye splices
76
What material is rigging hardware made of?
forged alloy
77
What three conditions require running rope to be replaced?
1. signs of breakage in the valleys between the strands
2. six or more broken wires in one rope lay
3. three or more broken wires in on strand
78
What formula can be used to calculate the SWL of wire rope at a 5:1 safety factor ratio?
SWL in tons = D² x 8
D = diameter of wire rope in inches
79
What is the purpose of a Carrick bend in a rope?
for joining large diameter ropes
80
What is the purpose of a figure 8 knot?
tying two ropes of equal diameter together for making a secure loop in the end of a rope
81
What are the characteristics of a Seale wire rope?
wires of the outer layer are larger in diameter than wires of the inner layer
82
Which formula is used to determine the clip spacing on wire rope when using integral saddle clips?
rope ∅ x 7 = clip spacing
83
What formula is used to determine clip spacing on wire rope when using U-bolt clips?
rope ∅ x 6 = clip spacing
84
Which formula is used to determine the length of turn back on wire rope when using U-bolt clips?
of clips x spacing = turn back
85
Normally, one seizing on each side of a wire rope cut is enough. When is this not the case, and what is the recommendation then?
When cutting non-performed or rotational resistant ropes
the recommendation is minimum two seizings per side spaced 6x the rope ∅ apart
86
Common lever hoists are available in what capacities?
3/4 to 6 tons
87
What is the formula used for calculating the minimum sheave diameter for wire rope?
D x 20 = sheave ∅
D = ∅ of the wire rope
88
The rule of thumb for nylon web SWL is to use ________ lb. per inch (nylon single ply).
1600lb/inch SWL
i.e. 2" = 1600 x 2 = 3200lb SWL
89
What are the two types of hoist limit switches?
1. weighted switch type
2. paddle type
90
What formula is used to calculate the length of turn back needed on wire rope when using J-clips?
turn back = # clips x spacing
91
What is the WLL of a chain sling?
working load limit (WLL) is the max load that can safely be applied to a straight length of chain
92
What are the three types of shackles?
1. anchor and chain (bow type and D-type)
2. web sling shackles
3. round sling shackles
93
What formula is used to determine the number of clips on a wire rope?
rope ∅ x 3 + 1 = # of clips
*always round up
94
What does the second number below describe:
6 x 21 filler, fibre core rope
21 = the number of wires per strand in the wire rope
95
True or false:
Nylon repels fluids better than polyester slings.
false;
polyester repels fluids better
96
Which two synthetic materials are used in fibre core wire ropes?
1. polypropylene
2. nylon
97
What are the two common types of scaffolding systems?
1. elevated working platforms
2. framed scaffolding systems
98
What three things affect the stability and reduce the lifting capacity of a mobile crane?
1. load distance (load radius)
2. load weight
3. the quadrant the crane is lifting over
99
What is the limit of approach for 500kV?
7m
100
True or false:
Crane hoists are designed to have two full wraps of rope on the drum when the hook is at the lowest position.
true
101
True or false:
The diameter of the pin indicates the size of the shackle.
false;
the diameter of the bow section sizes the shackle
102
What is the correct orientation of a shackle in the hook of a crane?
pin resting in the hook
103
What type of sling should be used where loads are abrasive, hot, or where they tend to get cut?
wire mesh slings
104
Which has the higher holding power: a J-clip or a Crosby clip?
a J-clip
105
What device protect slings from sharp corners, protrusions, sharp edges, and tight bends?
a softener
106
True or false:
Shoulder-less eyebolts are for vertical lifts only.
true
107
Destroy shackles that are worn in the crown or pin by more than _______% of their original diameter.
10%
108
When measuring wire rope diameters, the measurement should be taken at:
the crowns, which are the widest point
109
What is a Class B fire?
flammable liquids
* B is for barrel (which contain flammable liquids)
110
True or false:
Your employer is not required to provide all employees WHMIS training.
false;
they must provide WHMIS training to all employees
111
What are the three elements of a fire?
1. fuel
2. air
3. ignition
112
Who is responsible for having an emergency response plan in place at a work site?
the employer
113
When an injury occurs at work, what are your three obligations as an employee?
1. inform your employer
2. inform your health care provider
3. inform WCB
114
What are the three primary obligations of an employer when an employee is injured at work?
1. provide for and pay the cost of immediate transport
2. pay full regular wages for the day of injury
3. report the accident to WCB within 72 hours
115
Which type of wire core consists of a single strand of wire?
wire strand core (WSC)
116
What does the first number below describe?
6 x 19 ordinary fibre core
6 = the number of strands in the wire rope
117
What type of sling has the least resistance to shock loading?
chain slings
118
What are the four main categories of workplace hazards?
1. biological
2. chemical
3. ergonomic
4. physical
119
What is the highest level of hazard control?
engineering controls
120
What two things can be used to check that a mobile crane is level?
1. 4' carpenters level on the base of the machine
2. check that the hoist line is plumb
121
True or false:
When levelling a crane with outriggers, all tires must be off the ground.
true
122
What is the lowest level of control from managing hazards in the workplace?
PPE
123
What are two types of wire rope clips?
1. J-clip (double saddle)
2. U-bolt (Crosby clip)
J-clip = integrated saddle clip
124
What are the three classes of protective headwear?
1. Class G (general use)
2. Class E (electrical)
3. Class C (conducting)
125
What does the green triangle on work boots represent?
Category 1 protective footwear
126
What is a typical chain safety factor?
4:1
127
What are the two WHMIS signal words?
1. Danger (high risk)
2. Warning (less severe risks)
128
What are six pieces of required information on WHMIS supplier labels?
1. product identifier
2. pictograms
3. signal words
4. hazard statement
5. precautionary statement
6. initial supplier identifier
129
On a supplier label, what is the pictogram?
the graphic that represents the hazard class
130
What are the three key responsibilities of a workers as it pertains to WHMIS?
1. participate in training
2. use the information to protect themselves and others
3. apply workplace labels when required
131
When is the vertical capacity on a sling doubled?
when the sling is used in a basket hitch configuration where the legs are vertical and the object is 20x the sling diameter
132
If a crane is equipped with outriggers, what two load charts will it have?
1. load capacity while lifting on outriggers
2. load capacity while lifting on tires
133
When it comes to cranes, what does "limit of approach" mean?
an area around a live power line where no equipment can encroach
134
What are the four parts of an EOT?
1. bridge
2. trolley
3. trucks
4. tracks
135
What is the lowest angle recommend for shoulder type eyebolts?
45º
136
What are biological hazards?
viruses, bacteria, fungi, or parasites that cause diseases in humans (living organisms)
137
If a crane is to lift a load without tipping, the 1.__________ leverage must be greater than the 2.__________ leverage.
1. crane leverage
2. load leverage
138
A _______________ is a pneumatically operated winch for hoisting, lowering, and pulling loads that must be secured to the foundation.
tugger
139
When estimating the weight of material for lifting, what percentage of safe load weight is added?
12%
140
What are the two uses of blocking when used with outrigger floats?
1. increases the bearing area of the floats
2. prevents the floats from settling and sinking
141
True or false:
Outrigger cylinder shafts must be connected to the floats (pinned).
true
142
What is the purpose of a snatch block?
to change the direction of pull on a wire rope
143
What is the recommend sling angle for rigging?
60º
144
What type of eyebolt should only be used for vertical pulls?
shoulder-less eyebolts
145
How are shackles sized?
by the diameter of the bow
146
What is a Class C fire?
electrical equipment
C for circuit
147
How is the proper PPE determined for a job site according to Alberta OHS?
through hazard assessments done by the employer and employee
148
In the majority of situations, your employer is not required to provide PPE. When is this not the case?
where conditions such as a respiratory hazard or exposure to noise exists
149
True or false:
The tipping axis of a mobile crane is the same in all quadrants.
false;
150
In Alberta, WHMIS is governed by:
the OHS Act
151
On a supplier label, what is the product identifier?
the name of the product
152
What are three examples of when a workplace label is required?
1. the product is transferred to a new container
2. the supplier label is missing on unreadable
3. the product is made onsite
153
True or false:
It is the suppliers responsibility to update the SDS within 90 days of acquiring new information.
true
154
What is a Class K fire?
combustible cooking media (grease and oil)
K for kitchen
155
Portable fuel storage container must be approved by what two testing organizations?
1. CSA
2. ULC
156
Who is responsible for providing workers with WHMIS training, SDS sheets, and to inform workers of chemical hazards?
the employer
157
What two natural materials are often used as the core in fibre ropes?
1. sisal
2. manila
158
Under WHMIS, suppliers are responsible for:
providing the SDS for the products that they sell
159
A full body harness is also called a:
vest style harness
160
Who is responsible for developing a fall protection plan?
the employer
161
What is the safety factor for lifting and transporting workers?
10:1
162
If engineering and administrative controls fail to control the hazard, your employer must ensure you have and use _____________.
PPE
163
Under what conditions must you wear fall protection under 3m?
if there is an unusual possibility of injury
i.e. working above moving water, machinery that is in operation, etc.
164
How often must one inspect their fall protection?
prior to each work shift
165
True or false:
You and your employer are responsible to ensure that all required PPE is used in accordance to manufacturers specs and kept in good working order.
true
166
At what height must workers wear fall protection?
at 3m when not protected by guardrails
167
What is the safety factor for lifting the general public?
20:1
168
An extension ladder should be set at the proper angle of 1._______________ horizontal lengths to every 2.___________ vertical height to the point where the ladder makes contact to the structure.
1. one horizontal
2. four vertical
169
When in position, an extension ladder should protrude _________ meter(s) above the landing point.
1 meter
170
What is the max capacity of a wire rope sling with thimbles when compared to a straight rope?
80%
171
What formula is used to calculate sling tension?
T = (W ÷ N) x (L ÷ V)
T = sling tension
W = weight of load
N = # of slings
L = length of slings
V = vertical distance from hook to load
* Willie Nelson Loves Violin
172
True or false:
The minimum overlap on an extension ladder should be one meter unless the manufacturer specifies the overlap.
true
173
What is a Class A fire?
wood and paper
A for ash
174
With an EOT, what does the trucks ride on?
the tracks
175
What are the four types of ladder materials?
1. fibreglass
2. aluminum
3. reinforced plastic
4. wood
176
What is the minimum safety factor of a scaffold?
4:1
4x the load that may be imposed upon it
177
The height of a free standing scaffold must not be taller than _________ times its smallest dimension in width.
3x
178
True or false:
The IWRC increases the ropes resistance to crushing and will stretch less than fibre cored ropes and has increased tensile strength.
true
179
A cranes sweep area is divided into quadrants. What are the 3 typical quadrants?
1. over the front
2. over the sides
3. over the rear
180
What must you use or do whenever you could move the boom length of a crane into the limits of approach?
a signaller must help
181
True or false:
Your employer is responsible for providing job specific training needed to protect yourself and others from all controlled and hazardous substances.
true
182
how do you determine the net capacity of a crane?
gross capacity - deduction = net capacity
deductions can be rigging, hardware, etc. anything used to lift the load that isn't the load itself
183
On an EOT, what does the trolley travel on?
the bridge rails
184
What are the three main ways of controlling and EOT?
1. cab operated
2. pendant operated
3. remote controlled
185
What type of wire rope sling is preferred when rigging?
flemish eye sling with thimbles
186
What is the duty rating of a Type 1A ladder?
extra heavy duty
136kg
187
What must be done to secure non-hydraulic outriggers?
the beams and cylinders must be pinned and locked in place
188
What four crane conditions effect ground conditions?
1. crane weight
2. weight of the load
3. dynamic forces of the crane
4. vibrations in moving the load
189
What is a tirfor?
a hand operated cable winch used to move equipment on the horizontal plane
190
On a carrier-mounted telescopic boom crane, where are the jib extensions usually mounted?
on the heel section of the telescopic boom for transport purposes
191
What is a synthetic fibre round sling?
a continuous single synthetic yarn in a circle and encased in a tube cover
192
What types of slings are flexible and good to use when you are using rough handling or heat?
chain slings
193
What is the load centre of gravity?
the point where the load weight is concentrated
194
What is crane load average?
the combined values of the load weight and the distance between tipping point and load centre of gravity
195
What is the purpose of outriggers and stabilizers?
to make the crane more stable by moving the base of contact (tipping axis) further from the centre of gravity
196
What are the three broad subject areas in the OHS Code Explanation Guide?
1. core requirements applicable to all industries
2. requirements applicable to all industries
3. requirements applicable to specific industries and activities
197
What is the purpose of the OHS Regulation?
to help all groups and individuals understand their obligations and responsibilities regarding safety issues on the worksite
198
What are six important factors you must consider when choosing a wire rope?
1. strength
2. flexibility
3. resistance to abrasion (wear)
4. resistance to crushing
5. resistance to rotation
6. resistance to corrosion
199
The section of the Code "Core Requirements Applicable to All Industries" contains what three parts?
1. Part 1: definitions of words and terms
2. Part 2: requirements of employers and employees to identify and address hazards
3. Part 3: requirements to ensure equipment at the site is adequate
200
What are the five main hazard assessment tools?
1. hazard assessment reports
2. checklists
3. health and safety plans
4. emergency response plans
5. first air records and incident reports
201
What is the duty rating of a Type 3 ladder?
light duty
91kg
202
What are the seven classes of eye protection?
Class 1 - spectacles
Class 2 - goggles
Class 3 - welding helmets
Class 4 - welding hand shields
Class 5 - hoods
Class 6 - face shields
Class 7 - respirator face pieces
203
What Class of eye protection are spectacles classes as?
Class 1
204
What Class of eye protection are goggle classes as?
Class 2
205
What Class of eye protection are welding helmets classed as?
Class 3
206
What Class of eye protection are welding hand shields classes as?
Class 4
207
What Class of eye protection are hoods classes as?
Class 5
208
What Class of eye protection are face shields classes as?
Class 6
209
What Class of eye protection are respirator face pieces classes as?
Class 7
210
What is a mobile crane stabilizer?
a hinged or telescoping leg that is lowered to the ground
211
What is the duty rating for a Type 2 ladder?
medium duty
102kg
212
What are the suppliers four key responsibilities under WHMIS?
1. ensure the products are properly classified
2. label the product
3. provide SDS
4. update SDS as needed
213
What is an outrigger?
a telescoping horizontal beam to which a vertical hydraulic cylinder with a float is attached
214
What is the duty rating of a Type 1 ladder?
heavy duty
113kg
215
What are five conditions when you should not fight a fire?
1. the fire could block your exit
2. proper equipment to fight the fire is not available
3. the fire has spread
4. the extinguisher has run out
5. extinguisher does not work
216
Wire rope slings are usually manufactured in which two configurations?
1. eye and eye
2. endless or grommet slings
217
What does rigging refer to?
hardware used to attach the load to the lifting device
218
What is the cranes centre of gravity (CG)?
the point in the crane body (upper works and counterweight) from which the weight acts
219
Which OHS document provides details on the minimum legal standards for worker H&S as well as sets the minimum standards for employers and workers?
the OHS Regulation
220
Why must SDS sheets be provided for each controlled product?
the provide more detailed information than workplace labels
221
What are the three main goals of WHMIS?
1. protect the worker by providing information on hazardous materials
2. ensure hazardous materials are properly labelled
3. ensure requirements are consistent across Canada
222
In what two instances must toe boards be installed on scaffolding?
1. when workers are working below or adjacent to the platform
2. the platform is 3.5m above the ground
223
Scaffolding must be anchored by tiebacks or guy wires at intervals of:
1. ________m vertical
2. ________m horizontal
1. 4.6m vertical
2. 6.4m horizontal
224
What are common lifting capacities of a trifor?
1700 lbs to 3 tons
225
Under WHMIS, each hazard group is further divided into hazard 1._____________, which in turn are further divided into hazard 2._______________.
1. hazard classes
2. hazard categories
226
What are two examples of RPE?
1. air supplying respirators (scuba)
2. air purifying respirators (cartridges and canisters)
227
What three things can be used to seize wire rope?
1. seizing strand
2. annealed wire
3. heavy duty tape
228
When must guard rails be installed on scaffolding?
when it is 3m or higher above the ground
229
What is the minimum height of a toe board?
140mm
230
True or false:
The OHS Act requires that your employer must ensure you and your fellow workers are aware of their responsibilities, aware of hazards, and are able to work safely.
true
231
How long must employers keep incident and first aid reports?
3 years
232
To find the weight of a load, you can check what three things?
1. shipping bills
2. blue prints
3. parts manual
233
On lifting chain, what are lifted fins?
the outside edges of the weld on a link lifting up and forming a collar
234
What type of natural fibre rope is sturdy enough for lifting?
#1 grade manila
235
What is the composition of the Alberta Apprenticeship and Industry Training Board?
a chair and 12 members
236
What type of synthetic fibre rope floats on water?
polypropylene
237
What is the usual safety factor for synthetic fibre rope?
5:1
238
How can the mechanical advantage of a wire rope block be determined?
by the number of rope sections supporting the travelling block
239
What are the two hazard groups in WHMIS?
1. physical hazards
2. health hazards
240
True or false:
You may alter your PPE in order to improve its fit.
false;
you may not alter or modify PPE
241
Why should fibre core ropes not be used if frozen?
internal fibres may break when a load is applied
242
How can you tell if a chain is suitable for hoisting?
the links will be stamped with an identifying letter or number
(A, T, or 8, 80, 800)
243
The most dangerous position to lift is when the boom is directly over one outrigger. Why is this?
most of the pressure will be focussed into that one outrigger (over the corner)
244
If engineering controls fail to eliminate or control the hazard, your employer must use _______________ controls to control the hazard to a level that is as low as possible.
administrative
245
True or false:
Your employer is required to test your knowledge of WHMIS.
true
246
True or false:
Grab hooks are used to modify the length of a chain sling by allowing to be twisted to shorten it.
false;
chain should never by kinked or twisted
247
1. Where can one find the safe working load of a shackle?
2. What is it rated in?
1. stamped on the bow section of the shackle
2. rating in tons
248
True or false:
The OHS Act does not require your employer to train you to protect yourselves and other on the work site.
false
249
When applied properly, J-clips and U-bolt clips develop approximately ___________% of the wire rope strength.
80%
250
Where are swivels placed when lifting?
between the hook and the load line
251
How is the depth of thread in a hole determined to ensure correct thread engagement of an eyebolt?
it should be 1.5 times the major thread diameter
252
What markings identify that a chain is rated for hoisting?
the letters A or T or versions of the number 8 (80, 800, etc.)
253
Who is responsible for ensuring that work site emergency response plans remain up to date?
the employer and employees
254
What is a Class D fire?
combustible metals
255
Lifting chain must be removed from service if it is worn by _____% or more.
10%
256
When it comes to health and safety, what is overextension?
when one lifts an object that is too far away from your abdomen
257
In regards to rigging, what does SWL stand for?
safe working load
258
What type of materials are wire rope slings made of?
carbon steel or stainless steel
259
The OHS Regulation together with the OHS Code, which derives its authority from the ________________, states the rules, obligations, and requirements that apply to health and safety.
OHS Act
260
When a thimble is used and the clips are properly applied, the mechanically clipped eye of a wire rope is capable of developing approximately ______% of the strength of the wire rope.
80%
261
What is the safety factor for general rigging?
5:1
262
What effect does unbalanced or eccentric reeving have on a crane?
it will reduce its capacity
263
Safety eyewear protects against what three types of hazards?
1. impact
2. splash
3. radiation
264
In regards to wire rope, what is seizing?
a thin wire wrapped around the rope (wire) to prevent the ends of the rope from unlaying when cut
265
As it related to rigging, what does "never saddle a dead horse" refer to?
the saddle of a U-bolt must be on the live (connect to the load) end of a rope
266
The OHS Code requires ____________ to develop emergency response plans.
employers
267
If a wire rope is cut with a torch, the first clip must be how far from the cut end of the rope?
6"
268
How do you determine the mechanical advantage of a wire rope block?
by counting the number of ropes that support the travelling block
269
As it related to slings, which is the stronger material: nylon or polyester?
nylon
270
Which hitch would you use to hoist a bundle of steel pipe?
a pair of double-wrapped basket hitches
271
Level hoists are tested to _____% of their rated capacity.
150%
272
What is the minimum limit of approach?
10' (0-50kV)
273
True or false:
The government, employers, and employees share the responsibilities for health and safety at the worksite.
true
274
What three OHS documents help protect workers from risk of injury at work?
1. OHS Act
2. OHS Regulation
3. OHS Code
275
When must a compressed gas cylinder have the valve cover installed?
when not connected to the system regulator and when being transported
276
In. ost welding shops, ventilation should give ________ complete air changes per hour.
4
277
What is the definition of a confined space?
an enclosed or partially enclosed space having restricted egress and not meant for continual human habitation
278
True or false:
It is only the employer who is supposed to keep the emergency response plans up to date.
false;
the employer and employee
279
What is the minimum tapped hole depth for eyebolts?
1.5 times the nominal thread diameter
280
The OHS _________ details obligations your employer must fulfill, your rights as a worker and the rights of others connected to the worksite.
The OHS Act
281
After what time period does an SDS sheet expire?
3 years
282
What federal legislation protects you and your coworkers in the workplace?
Bill C-45
283
True or false:
Self-employed trades people are considered employers under the OHS Act.
true
284
Who is responsible for conducting hazard assessments or control any identified hazards?
the employer
Section 8 of the OHS Regulation
285
Where must crane manufacturers secure the load charts?
inside the crane cab
286
A wire rope for lifting needs to have what type of core?
IWRC (independent wire rope core)
287
Why should fibre core ropers not be used in situations where there are elevated temperatures?
the heat could damage the core
288
The OHS 1.________ provides further clarification to sections of the OHS 2._________
1. Regulation
2. Act
289
You and your employer must work together to control hazards in what 3 ways?
1. engineer controls
2. administrative controls
3. PPE
290
What is a cranes sweep area?
the total area that the cranes boom can swing over
291
