We have been working with industry on issues identified with the repeatability and reliability of the modified C.1 test prescribed by section 188.8.131.52.3 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 could be formally published AMSA issued two exemptions valid until the end of June 2019, to replace those previously issued:
MSC.1/Circ.1600 Interim Guidance for Conducting the Refined MHB (CR) Corrosivity Test, dated 10 January 2019, was formally published by the IMO in January 2019. AMSA has issued an exemption valid until 31 December 2022 to allow shippers to use the guidance in the circular until it is agreed and finalised in the 06-21 amendments to the IMSBC Code.
• Exemption 5739 to section 334 of the Navigation Act 2012 to allow shippers of solid bulk cargoes to use the guidance in MSC.1/Circ.1600.
EX 5739 replaces EX 5717 and EX 5718, both of which will expire on 30 June 2019.