CRST – ASF || QUESTIONS WITH COMPLETE
SOLUTIONS!!
Difference between fault tree analysis and event tree analysis? correct answers Fault tree
analysis works backwards from a defined incident, while event tree analysis works forward
from a specific event.
three advantages of analytical trees? correct answers 1) conduct a thorough analysis without
the wordiness
2) make the process visible with transfer of data
3) be used as investigation tools - working backward from an event.
Howard Raiffa correct answers credited with the decision tree theory
3M correct answers When are guard rails, mid rails and toe boards needed on scaffolding?
two or more correct answers As per ANSI once a flight of stairs has this many steps they
require handrails to be installed.
90% correct answers A figure 8 knot in a rope retains how much of the rope's breaking
strength.
Shear Point correct answers The hazardous area is created by a cutting movement of a
mechanical part past a stationary point on the machine.
Planned Inspections correct answers Prepare, Inspect, Develop remedial correctives, Follow
up, Prepare report
Loss Time Incident Frequency correct answers # of loss times x 200,000 / Total Number Of
Hours Worked
guage pressure correct answers Amount of pressure exceeding atmospheric pressure
code of practice correct answers Work involving confined space must have what?
Knife Switch correct answers Electrical switch that is considered hazardous unless safeguards
are implemented.
Combustible Dusts correct answers Class 2 hazardous locations of the Canadian electrical
code
standard deviation correct answers what is used to measure variances
Metal Fume Fever correct answers fumes from magnesium
power has been shut off and tested correct answers When is an electrical system considered
de-energized?
SOLUTIONS!!
Difference between fault tree analysis and event tree analysis? correct answers Fault tree
analysis works backwards from a defined incident, while event tree analysis works forward
from a specific event.
three advantages of analytical trees? correct answers 1) conduct a thorough analysis without
the wordiness
2) make the process visible with transfer of data
3) be used as investigation tools - working backward from an event.
Howard Raiffa correct answers credited with the decision tree theory
3M correct answers When are guard rails, mid rails and toe boards needed on scaffolding?
two or more correct answers As per ANSI once a flight of stairs has this many steps they
require handrails to be installed.
90% correct answers A figure 8 knot in a rope retains how much of the rope's breaking
strength.
Shear Point correct answers The hazardous area is created by a cutting movement of a
mechanical part past a stationary point on the machine.
Planned Inspections correct answers Prepare, Inspect, Develop remedial correctives, Follow
up, Prepare report
Loss Time Incident Frequency correct answers # of loss times x 200,000 / Total Number Of
Hours Worked
guage pressure correct answers Amount of pressure exceeding atmospheric pressure
code of practice correct answers Work involving confined space must have what?
Knife Switch correct answers Electrical switch that is considered hazardous unless safeguards
are implemented.
Combustible Dusts correct answers Class 2 hazardous locations of the Canadian electrical
code
standard deviation correct answers what is used to measure variances
Metal Fume Fever correct answers fumes from magnesium
power has been shut off and tested correct answers When is an electrical system considered
de-energized?
