Bauxite, cargo, liquification Home Publications Articles Bauxite – A cargo that may liquefy Bauxite – A cargo that may liquefy Publications Mark Rudd Published: February 24, 2021 Contact author Download article pdf Image Following the 2015 sinking of the “Bulk Jupiter” reported by the Club here , a working group was set up to review the risk of bauxite liquefaction and make recommendations in respect of updating the International Maritime Solid Bulk Cargoes (“IMSBC”) Code regulations. IMO Resolution MSC.462(101) introduced amendments (05-19) to the International Maritime Solid Bulk Cargoes (IMSBC) Code. The amendments became mandatory on 1 January 2021. The amendment 05-19 to the International Maritime Solid Bulk Cargoes (IMSBC) Code has introduced several changes. The changes with respect to bauxite are: Revised schedule for BAUXITE (Group C) New schedule for BAUXITE FINES (Group A) Revised Proctor/Fagerberg test procedure to determine the Transportable Moisture Limit (“TML”) for BAUXITE FINES (Group A) For the Club’s members, the most important part is that there are new criteria to determine whether the cargo they are offered is Group C or Group A. Under the new criteria, Group A bauxite cargoes are those cargoes containing more than 30% of fine particles less than 1 mm (D30 < 1 mm) and more than 40% of particles less than 2.5 mm (D40 < 2.5 mm). All other Bauxite cargoes remain classified as Group C. Notwithstanding the above provision, bauxite cargo meeting the above criteria may be carried as a group C cargo in accordance with the provisions of the individual schedule for BAUXITE where the shipper provides the master with a certificate, in accordance with the result of the test approved by the competent authority of the port of loading,* stating that the moisture of the cargo freely drains from the cargo so that the degree of saturation is not liable to reach 70%. (* IMSBC code - Appendix 2 – Section 1.6 Modified Proctor/Fagerberg test procedure for bauxi