OSHA 500 CONSTRUCTION TRAINER QUESTIONS
AND VERIFIED ANSWERS
3 major types of rigging hazards - Answers - falls
struck by
electric
materials handling aparatus in rigging (3) - Answers - wire ropes
chains
synthetic (web) slings
inspections (how often and by whom) - Answers - prior to each use by a competent
person
rigging restrictions for wire rope - Answers - less than 10% broken wires in 8 diameter
requirements for special custom-designed accessories in relation to safe working loads
for rigging (2) - Answers - proof test of 125%
safe load marked
4 causes of crane accidents - Answers - instability
no communication
no training
inadequate maintenance/ inspections
when and by whom must crane inspections be performed
(5) - Answers - modified: qualified person
post-assembly: qualified person
Annual: qualified
shift: competent
monthly: competent
If the ability to transmit signals between crane operator and signal person is interrupted
what happens - Answers - work is stopped until signal resumes
How are workers prevented from entering and area where they may be struck/crushed
by a crane's rotating superstructure? (4) - Answers - training
maintain barriers/control lines
signage
mark equipment
minimum clearance for power lines - Answers - <50 kV: 10 '
50kV - 200 kV : 15'
, 200 kV - 350 kV: 20'
350 kV - 500 Kv : 25'
unknown: 20 kV
Who needs proper certifications, qualifications, training when working around cranes (4)
- Answers - 1. signal spotter
2. crane operator
3. rigger
4. maintenance/repair
5 motor vehicle, mechanized equipment, marine operations hazards - Answers -
unexpected/confusing situations
obstructions
diverted attention
exposed workers
improper temporary traffic control set-up
frequent PIT accidents (7) - Answers - tip over
struck by PIT
struck by falling load
falling off truck
driving off loading dock
improper maintenance
driver losing control
tractor roll-over causes (5) - Answers - hill that is too steep
bucket elevated too high for load
driven too close to edge of road/ditch/steep slope
stuck in mud/snow
rear wheels cannot turn---chains, boards,to improve traction
restricted rear view requirements (2) - Answers - audible reverse signal alarm
observer to signal that its safe to back up
parking precautions for PITs (3) - Answers - parking break set
wheels chocked
location of equipment when parked at night next to highway
certified forklift operator training requirements (3) - Answers - (training conducted by
knowledgable trained experienced person)
1. formal instruction (classroom)
2. practical
3. evaluation of performance (every 3 yrs)
Chemicals enter the body (4) - Answers - inhalation
injection
AND VERIFIED ANSWERS
3 major types of rigging hazards - Answers - falls
struck by
electric
materials handling aparatus in rigging (3) - Answers - wire ropes
chains
synthetic (web) slings
inspections (how often and by whom) - Answers - prior to each use by a competent
person
rigging restrictions for wire rope - Answers - less than 10% broken wires in 8 diameter
requirements for special custom-designed accessories in relation to safe working loads
for rigging (2) - Answers - proof test of 125%
safe load marked
4 causes of crane accidents - Answers - instability
no communication
no training
inadequate maintenance/ inspections
when and by whom must crane inspections be performed
(5) - Answers - modified: qualified person
post-assembly: qualified person
Annual: qualified
shift: competent
monthly: competent
If the ability to transmit signals between crane operator and signal person is interrupted
what happens - Answers - work is stopped until signal resumes
How are workers prevented from entering and area where they may be struck/crushed
by a crane's rotating superstructure? (4) - Answers - training
maintain barriers/control lines
signage
mark equipment
minimum clearance for power lines - Answers - <50 kV: 10 '
50kV - 200 kV : 15'
, 200 kV - 350 kV: 20'
350 kV - 500 Kv : 25'
unknown: 20 kV
Who needs proper certifications, qualifications, training when working around cranes (4)
- Answers - 1. signal spotter
2. crane operator
3. rigger
4. maintenance/repair
5 motor vehicle, mechanized equipment, marine operations hazards - Answers -
unexpected/confusing situations
obstructions
diverted attention
exposed workers
improper temporary traffic control set-up
frequent PIT accidents (7) - Answers - tip over
struck by PIT
struck by falling load
falling off truck
driving off loading dock
improper maintenance
driver losing control
tractor roll-over causes (5) - Answers - hill that is too steep
bucket elevated too high for load
driven too close to edge of road/ditch/steep slope
stuck in mud/snow
rear wheels cannot turn---chains, boards,to improve traction
restricted rear view requirements (2) - Answers - audible reverse signal alarm
observer to signal that its safe to back up
parking precautions for PITs (3) - Answers - parking break set
wheels chocked
location of equipment when parked at night next to highway
certified forklift operator training requirements (3) - Answers - (training conducted by
knowledgable trained experienced person)
1. formal instruction (classroom)
2. practical
3. evaluation of performance (every 3 yrs)
Chemicals enter the body (4) - Answers - inhalation
injection
