We have been working with industry on issues identified with the repeatability and reliability of the modified C.1 test prescribed by section 18.104.22.168.3 of the International Maritime Solid Bulk Cargoes Code (IMSBC code).
We have previously issued two exemptions in respect of this issue, each valid until the 04-17 amendments to the IMSBC Code come into mandatory effect on 1 December 2019:
- Exemption 5450 to section 334 of the Navigation Act 2012 - to allow shippers of iron ore, iron ore fines, bauxite and coal to use an alternative method for evaluation of the MHB corrosive properties of iron ore and iron ore fines.
- Exemption 5451 to section 334 of the Navigation Act 2012 to allow shippers of mineral concentrates and metal sulphide concentrates to use a modified C.1 test better suited to the properties of these materials.
Whilst the issues have been progressed at meetings of the sub-committee for the Carriage of Cargoes and Containers (CCC) at IMO, amendments to be included in the 06-21 amendments to the IMSBC Code were finalised and agreed during CCC 5 in September 2018. These were sent to the Maritime Safety Committee in December 2018 for that committee to issue an MSC circular. Until that circular can be formally published, allowing AMSA to permit use of it, and to allow shippers a period to transition to the contents of the circular once it is formally published, AMSA has issued two exemptions valid until the end of June 2019, to replace those previously issued: