We have revised a previously issued ClassNK Technical Information (No.TEC-1260 dated 25 March 2022) related to the fitting or designating of fuel oil sampling points. This Technical Information supersedes the previously issued No.TEC-1260.

Please be advised that an amendment to MARPOL Annex VI related to fuel oil sampling and verification procedures for the sulphur content of fuel oil was adopted as Resolution MEPC.324(75) at the 75th session of the Marine Environment Protection Committee (MEPC75) held in November 2020, and these amendments are scheduled to enter into force on 1 April 2022.

This amendment adds the following new terms "In-use sample" and "On board sample".

In-use sample: Samples drawn from fuel oil supply system downstream of fuel oil service tanks; in other words, a sample of fuel oil in use on the ship.
On board sample: Samples drawn from the fuel oil transfer systems from fuel oil storage tanks to fuel oil setting tanks, or from fuel oil settling/service tanks, etc.; in other words, a sample of fuel oil intended to be used or carried for use on board the ship.

Technical information related to the fitting or designation of sampling points for "In-use samples" is as follows.

1. Application
Applicable to the fuel oil supply systems for all new and existing ships of 400 GT and above engaged on international voyages as well as all fixed or floating drilling rigs and other platforms. (includes all fuel oil supply systems for machinery such as main engines, auxiliary engines, boiler, incinerators, inert gas generators, emergency generators, etc., but excludes low-flashpoint fuel oil supply systems))

(To be continued)