12.1.1 Each crane, including its supporting structure,
which is used for the transfer of material, equipment or personnel
between the unit and attending vessels should be of a design and construction
to the satisfaction of the Administration and adequate for the service
intended in accordance with the requirements of a recognized classification
society or with national or international standards or codes.
12.1.2 Cranes should be so located and protected
as to reduce to a minimum any danger to personnel, due regard being
paid to moving parts or other hazards. Their design should have regard
to the materials used in construction, the working conditions to which
they will be subjected and the environmental conditions. Adequate
provisions should be made to facilitate cleaning, inspection and maintenance.
12.1.3 Consideration should be given to the failure
mode for each crane in the event of extreme overload so that the crane
operator is exposed to minimum danger.
12.1.4 An officer of the Administration or a duly
authorized person or organization should survey the installation of
each crane, with particular regard to its supporting structure.
12.1.5 After each crane has been erected on board,
and before it is placed in service, operational and load tests should
be conducted. These tests should be witnessed and verified by an officer
of the Administration or a duly authorized person or organization.
A record of these tests and other information concerning initial certification
should be readily available.
12.1.6 Each crane should be examined at intervals
not exceeding 12 months. It should be further tested and recertified,
at intervals not exceeding five years, or after substantial alteration
or repairs. These tests should be witnessed and verified by an officer
of the Administration or a duly authorized person or organization.
A record of these examinations, tests and certifications should be
readily available.
12.1.7 Cranes used for loading and discharging
of offshore supply vessels should be furnished with rating tables
or curves which take into account the dynamics associated with the
unit’s and vessel’s motions.
12.1.8 Except when loads are determined and marked
prior to lifting, each crane should be fitted, to the satisfaction
of the Administration, with a safety device to give the crane operator
a continuous indication of hook load and rated load for each radius.
The indicator should give a clear and continuous warning when approaching
the rated capacity of the crane.
12.1.9 The Administration should give consideration
to the installation of limit switches to provide for the safe operation
of the crane.
12.1.10 A crane manual should be provided for
each crane and should be readily available. This manual should contain
full information concerning:
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.1 design standard, operation, erection, dismantling
and transportation;
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.2 all limitations during normal and emergency
operations with respect to safe working load, safe working moment,
maximum wind, maximum heel and trim, design temperatures and braking
systems;
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.3 all safety devices;
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.4 testing of the emergency lowering system for
personnel transfer, if fitted;
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.5 diagrams for electrical, hydraulic and pneumatic
systems and equipment;
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.6 materials used in construction, welding procedures
and extent of non-destructive testing; and
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.7 guidance on maintenance and periodic inspection.