The Rule Note No. NR620 R02 has been issued on 1 July 2023 and entered into force on the same date.
1.1.1 The present Rule Note applies to ships carrying liquefied natural gas (LNG) or liquefied ammonia and intended to ensure the transfer of liquefied gas to gas-fuelled ships.
1.1.2 In accordance with NR467, Pt A, Ch 1, Sec 2, [4.4.5], ships complying with the requirements defined in this Rule Note and with the applicable requirements defined in [1.4] are to be assigned the service notation liquefied gas carrier completed with additional service features defined in [1.5].
1.2.1 In general, the requirements of this Rule Note apply to bunkering station and transfer systems of the ship.
1.2.2 This Rule Note covers:
the design and installation of the transfer systems from the bunkering ship to the receiving ship and the vapour transfer system from the receiving ship to the bunkering ship, including hoses, transfer arms, and auxiliary equipment supporting the transfer system
the design and installation of the equipment intended for the boil-off gas management of the bunkering ship
the design and installation of the piping system of the bunkering ship
- the safety arrangements.
1.3.1 This Rule Note does not cover the storage tanks, associated piping, and process systems which are to comply with the requirements of IGC Code and NR467, Part D, Chapter 9.