North Standard

The International Maritime Solid Bulk Cargoes (IMSBC) Code provides definitions, tests and precautions for cargoes that may liquefy or dynamically separate. Liquefication risk has historically been associated with ore fines and metal ore concentrates, for which the IMSBC Code tests and recommendations are relatively straightforward to apply.
However, any cargo containing fine material and moisture has the potential to liquefy or separate and the properties of such cargoes should be determined by the shipper.

https://www.nepia.com/publications/bulk-cargo-liquefaction-briefing/