classification society Bureau Veritas has published
requirements for LNG Bunkering tankers. The requirements, set out in Rule Note
NR 620 LNG Bunkering Ship, cover special arrangements for ships carrying LNG
which will transfer that LNG to ships using LNG as fuel.
Segretain, Technical Director, Bureau Veritas Marine & Offshore Division,
says, “Establishing a secure and safe LNG bunkering chain is the key to a swift
uptake of LNG fuel across shipping. We believe that small-scale LNG bunker
vessels will play a key role in developing that chain. These rules help ensure
safe development of this new type of ships. Of the fifteen or so small-scale
LNG ships ordered so far ten are to BV class so we are driving this sector
NR 620 covers the design and installation of the LNG transfer systems
from bunkering ship to the receiving ship and the vapour transfer system from
the receiving ship to bunkering ship, including LNG hoses, transfer arms and
auxiliary systems for handling the LNG system. The design and installation of
the equipment intended for boil-off gas management on the bunkering ship and
the design and installation of the gas piping system of the bunkering ship are
also set out. There is a separate section on safety arrangements.
Vessels meeting the standards
will be awarded the notation LNG
For ships which
provide extra facilities or services set out in the rule note additional
notations will cover:
RE The additional service
feature RE is assigned to LNG bunkering ships designed to receive LNG
from a gas-fuelled ship for which the LNG fuel tanks have to be emptied.
Initial-CD The additional service feature Initial-CD is
assigned to LNG bunkering ships designed for initial cooling down of the
receiving ship LNG fuel tank.
IG-Supply The additional service feature IG-Supply is
assigned to LNG bunkering ships designed to supply inert gas and dry air, to
ensure gas freeing and aeration, to a gas-fuelled ship which is designed in
accordance with IGF Code, paragraph 6.10.4.
BOG The additional service feature BOG is
assigned to LNG bunkering ships designed to receive and manage the boil-off gas
from the receiving ship generated during the bunkering operation.
BUREAU VERITAS at GASTECH Stand No C45
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Labels: bunkering, classification societies, fuel for ships, lng, small-scale LNG