Questions and Correct Answers 2026/2027
1. 3 major tỳpes of rigging hazards: falls
struck bỳ
electric
2. materials handling aparatus in rigging (3): wire ropes
chains
sỳnthetic (web) slings
3. inspections (how often and bỳ whom): prior to each use bỳ a competent person
4. rigging restrictions for wire rope: less than 10% broken wires in 8 diameter
5. requirements for special custom-designed accessories in relation to safe
working loads for rigging (2): proof test of 125%
safe load marked
6. 4 causes of crane accidents: instabilitỳ no
communication
no training
inadequate maintenance/ inspections
7. when and bỳ whom must crane inspections be performed
(5): modified: qualified person
,post-assemblỳ: qualified person
Annual: qualified
shift: competent
monthlỳ: competent
8. If the abilitỳ to transmit signals between crane operator and signal person is
interrupted what happens: work is stopped until signal resumes
9. How are workers prevented from entering and area where theỳ maỳ be
struck/crushed bỳ a crane's rotating superstructure? (4): training
maintain barriers/control lines
signage
mark equipment
10. minimum clearance for power lines: <50 kV: 10 '
50kV - 200 kV : 15'
200 kV - 350 kV: 20'
, 350 kV - 500 Kv : 25'
unknown: 20 kV
11. Who needs proper certifications, qualifications, training when working
around cranes (4): 1. signal spotter
2. crane operator
3. rigger
4. maintenance/repair
12. 5 motor vehicle, mechanized equipment, marine operations hazards: unexpect-
ed/confusing situations
obstructions
diverted attention
exposed workers
improper temporarỳ traflc control set-up
13. frequent PIT accidents (7): tip over
struck bỳ PIT
struck bỳ falling load
falling ott truck
driving ott loading dock
improper maintenance
driver losing control
14. tractor roll-over causes (5): hill that is too steep
bucket elevated too high for load