109302 cA

Question 1

Two types of protective structures can be mounted on an off-road machine to protect
the operator from harm. Identify these two (2) types of structures.

Answer 1

a) Falling Object Protective Structure (FOPS)

b) Roll Over Protective Structure (ROPS)

Question 2

Protective structures must be mounted on the machine so that impact forces are
transmitted through the mounting arrangement to the main frame.T/F

Answer 2

true

Question 3

Protective screens and guards may be mounted on the basic protective structure.
These components must be mounted so that maximum operator protection exists
while operator visibility is restricted as little as possible.T/F

Answer 3

true

Question 4

Lights and other accessories can be mounted on a protective structure. Holes for the
mounting brackets should be drilled through the structural members (vertical beams)
to provide the maximum support for the lights and accessories.T/F

Answer 4

false;

Question 5

When you repair a protective structure you should follow the instructions and
recommendations provided by the particular manufacturer.T/F

Answer 5

true

Question 6

What safety precaution should you follow when you remove and replace a protective
structure?

Answer 6

Always use proper lifting equipment that can handle the weight of the structure. Use
slings and/or beams to balance the load. Keep other workers clear of the area during
this process.

Question 7

Identify three (3) reasons why fire suppression equipment should be installed on
off-road equipment.

Answer 7

a) The cost of equipment is very high.
b) The cost of equipment downtime and lost production is very high.
c) Huge quantities of fuel, oil, lubricants and hydraulic fluids are carried on large
off-road machines.

Question 8

Some fire suppression systems are manually activated. Other fire suppression
systems are manually and/or automatically activated. T/F

Answer 8

true

Question 9

Identify the two (2) different types of heat detection sensors that could be used on a
fire suppression system that has an automatic control centre.

Answer 9

a) Spot sensors – detect high temperature at specific locations.
b) Linear detection wire - detects high temperature wherever the wire is installed.

Question 10

The only gas used to signal, trigger and pressurise the fire suppression system is
carbon dioxide.T/F

Answer 10

false;

Question 11

Dry chemical powder and liquid chemical solutions can both be used in a fire
suppression system.T/F

Answer 11

true

Question 12

When an automatic fire suppression system detects a fire, several steps occur quite
quickly within a short delay period. Identify four (4) of those steps.

Answer 12

a) An audible and often a visual alarm is sounded.
b) The engine shut down process is automatically started.
c) The fire control system begins to vent the hydraulic tanks.
d) The fire suppression system is automatically started.

Question 13

A fire suppression system can pose some danger to an operator or personnel in the
vicinity when the system is activated. Identify the three (3) main system components
that could affect human life.

Answer 13

a) The chemical agents (dry or liquid).
b) The compressed gas (the dispersant gas).
c) The high system pressure that drives the chemical from the nozzles.

Question 14

The fire suppression system should be inspected by a qualified fire equipment
serviceperson, at least every six months at a minimum.T/F

Answer 14

true

Question 15

The following are examples of ground-engaging tools.

a) cutting edges
b) corner bits
c) ripper points
d) scarifier points
e) all of the above

Answer 15

All of the above are examples of ground-engaging tools.

Question 16

Cutting edges enable a blade, bucket or bowl to more easily penetrate the ground
while providing protection to the mounting surface (blade, bucket or bowl).T/F

Answer 16

true

Question 17

A scarifier is able to penetrate to great depths in the ground.T/F

Answer 17

false;

Question 18

Identify the ripper design that provides the operator with the most versatility during
operation in a wide variety of ground conditions.

Answer 18

The adjustable parallelogram ripper is the most versatile ripper.

Question 19

Identify the different types of optional attachments mentioned in this module that
could be mounted on a motor grader to improve productivity in the winter.

Answer 19

The following attachments could be mounted on a motor grader to improve winter
operation: a snow wing, a V-plow, a scarifying cutting edge and a scarifier.