CPCS A62 Crane/Lifting Operations Supervisor Theory
Questions With Complete Solutions
A replacement crane driver has been supplied to continue the
lift. What must they be made aware of before further
lifting can take place? Correct Answers Lift plan
Current situation
A tower crane has been delivered to site, assembled and
configured for lifting. What must be carried out before
lifting starts and by whom? Correct Answers Thorough
inspection by an authorised & competent person
a) On a tower crane, where must the load radius diagram be
located and
b) what information must it contain? Correct Answers a) at the
base
b) SWL (various radii) & number of falls on hook block
a) What determines the minimum distances that any part of plant
and machinery has to be kept from over head
electricity lines and
b) explain why a distance should be kept. Correct Answers a)
voltage
b) electricity can arc to the crane
a) What is meant by the lifting capacity of the crane and
b) who determines it? Correct Answers a) max lift weight in a
given configuration
b) the manufacturer
, a) What is the purpose of a Method Statement and
b) what is required of the operator? Correct Answers a)
implements a safe system of work
b) comply with the method statement
a) When and
b) why are axle or suspension locks fitted to most mobile
cranes? Correct Answers a) blocked/free unwheel duties
b) forms part of the cranes overall dead weight
According to BS 7121 Part 1: a) what is the minimum number of
allowable turns on the hoist drum and
b) who decides the actual minimum for a given model of crane?
Correct Answers a) 2
b) manufacturer
Define the term 'radius'. Correct Answers The distance between
the crane's central point of rotation and the centre of the load
Describe how to calculate the area of support beneath a crane
outrigger, which gives maximum possible safeguards
against ground subsidence. Correct Answers (Sum of crane
weight, lifting accessories & load weight) / ground bearing
pressure
Gives the area of support mats needed under outriggers
During the lifting operation, part of the task cannot be carried
out as detailed in the lift plan.
a) What initially must happen to the lifting operation and
Questions With Complete Solutions
A replacement crane driver has been supplied to continue the
lift. What must they be made aware of before further
lifting can take place? Correct Answers Lift plan
Current situation
A tower crane has been delivered to site, assembled and
configured for lifting. What must be carried out before
lifting starts and by whom? Correct Answers Thorough
inspection by an authorised & competent person
a) On a tower crane, where must the load radius diagram be
located and
b) what information must it contain? Correct Answers a) at the
base
b) SWL (various radii) & number of falls on hook block
a) What determines the minimum distances that any part of plant
and machinery has to be kept from over head
electricity lines and
b) explain why a distance should be kept. Correct Answers a)
voltage
b) electricity can arc to the crane
a) What is meant by the lifting capacity of the crane and
b) who determines it? Correct Answers a) max lift weight in a
given configuration
b) the manufacturer
, a) What is the purpose of a Method Statement and
b) what is required of the operator? Correct Answers a)
implements a safe system of work
b) comply with the method statement
a) When and
b) why are axle or suspension locks fitted to most mobile
cranes? Correct Answers a) blocked/free unwheel duties
b) forms part of the cranes overall dead weight
According to BS 7121 Part 1: a) what is the minimum number of
allowable turns on the hoist drum and
b) who decides the actual minimum for a given model of crane?
Correct Answers a) 2
b) manufacturer
Define the term 'radius'. Correct Answers The distance between
the crane's central point of rotation and the centre of the load
Describe how to calculate the area of support beneath a crane
outrigger, which gives maximum possible safeguards
against ground subsidence. Correct Answers (Sum of crane
weight, lifting accessories & load weight) / ground bearing
pressure
Gives the area of support mats needed under outriggers
During the lifting operation, part of the task cannot be carried
out as detailed in the lift plan.
a) What initially must happen to the lifting operation and
