Page 250 - International safety guide for oil tankers and terminals

INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS AND TERMINALS

11.9 Transfers Between Vessels
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11.9.1 Ship-to-Ship Transfers

In ship-to-ship transfers, both tankers should comply fully with the safety
งานห้องสมุด ศูนย์ฝกพาณิชย์นาวี
precautions required for normal cargo operations. If the safety
precautions are not being observed on either vessel, the operations must
not be started or, if in progress, must be stopped.
Ship-to-ship transfers undertaken in port or at sea may be subject to
approval by the port or local marine authority and certain conditions
relating to the conduct of the operation may be attached to such
approval.

A full description of the safety aspects of transfer operations is contained
in the ICS/OCIMF publication ‘Ship-to-Ship Transfer Guide (Petroleum)’.

11.9.2 Ship-to-Barge and Barge-to-Ship Transfers

In ship-to-barge or barge-to-ship transfers of petroleum, only authorised
and properly equipped barges should be used. Precautions similar to
those set out for ship-to-ship cargo transfers in the ICS/OCIMF
‘Ship-to-Ship Transfer Guide (Petroleum)’ should be followed. If the safety
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precautions are not being observed on either the barge or the tanker, the
operations must not be started or, if in progress, must be stopped.
Masters of ships should be aware that barge crews might not be
conversant with the ‘Ship-to-Ship Transfer Guide (Petroleum)’.

The rate of pumping from ship to barge must be controlled according to
the size and nature of the receiving barge. Communications procedures
must be established and maintained, particularly when the freeboard of
the ship is high in relation to that of the barge.

If there is a large difference in freeboard between the ship and the barge,
the barge crew must make allowance for the contents of the hose on
completion of the transfer.

Arrangements should be made to release the barge in an emergency,
having regard to other shipping or property in the vicinity. If the tanker is
at anchor, it may be appropriate for the barge to drop anchor clear of the
tanker, where it could remain secured to wait for assistance.

Barges should be cleared from the ship’s side as soon as possible after
they have completed the loading or discharging of volatile petroleum.

11.9.3 Ship-to-Ship Transfers Using Vapour Balancing
Specific operational guidance should be developed to address the
particular hazards associated with vapour emission control activities
during ship-to-ship transfer operations using vapour balancing techniques.
Such transfers should only be undertaken between inerted ships and the
recommendations contained in Section 7.1.6.4 should be followed.

216 © ICS/OCIMF/IAPH 2006