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Russian shipping register adds vessel conversion rules for LNG bunkers

22 Jan 2018

Classification society Russian Maritime Register of Shipping (RS) has added new rules and guidelines to aid the conversion of using liquefied natural gas (LNG) as a fuel on ships.

“Taking into account the current demands of the industry, new distinguishing marks and descriptive notations have been introduced to the RS Rules that allow considering operational particulars and indicate the availability of specific arrangements and equipment,” it said.

“Thus, a number of requirements have been introduced in the RS Rules due to development of technologies allowing using natural gas as a fuel on board the ships.”

It has added a group of distinguishing marks, namely GRS (Gas Ready Ship), for ships prepared to use gas as fuel. These distinguishing marks specify the ship's readiness for conversion: 

  • D – design of ship conversion is approved by the Register
  • H – necessary hull reinforcements have been provided in the areas of gas fuel storage tanks and other additional equipment installation
  • T – LNG tank has been installed on board the ship
  • P – gas fuel piping and other special systems are installed
  • E – gas fuel consumers installed on board the ship are dual fuel

Where the appropriate requirements are complied with, a number of distinguishing marks may be also assigned simultaneously in addition to the distinguishing mark GRS (e.g., GRS-D-H-T)

Publication date: 22 January, 2018

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