Petcoke

petcoke

Handling of Petcoke cargo

Black, finely divided residue from petroleum refining in the form of powder and small pieces.

Recommendations for overseas carriage of coal:

  • Request the Cargo Declaration and ensure all cargo properties are within limits
  • On completion of loading, the cargo should be trimmed to a level surface.
  • Pyramid stowage should not be permitted.
  • The water content of the coals should be checked during loading.
  • Bills of lading should be claused to reflect the condition of the coal or if Charterers request clean BL in this case any unsound cargo should be rejected
  • Steam observed coming from the coal during loading is a warning of excess humidity and temperature, and in this case, the water content of the coals should be checked by bilge soundings
  • Condensation forming beneath hatch panels and deck beams should be controlled.
  • Checks should be made to ascertain whether the coal has sulphur marks (yellow colour spots), since sulphur may increase the risk of ignition.
  • If the temperature of the cargo increases to 90°C, inject CO2or inert gas into the hold.
  • Water should not be used in order to reduce the temperature. This may increase the temperature, and water spraying may additionally cause damage to the steel plating of the vessel. Foam or sand should be used, where necessary, to reduce temperatures
  • If temperatures increase to such an extent that the situation gets out of hand, coal experts advise that one solution may be to fill the hold with water.

This cargo shall not be loaded when the temperature of this cargo exceeds 107°C. The master shall post warnings about the high temperature of this cargo near the cargo spaces

When the cargo is loaded in a cargo space over a tank containing fuel or other material having a flashpoint under 93°C, the cargo having temperature of 55°C or higher shall not be loaded in the cargo space, unless part of the cargo having temperature 44°C or lower is loaded in a layer of at least 0.6 m thickness throughout the cargo space prior to loading the cargo having temperature of 55°C or higher.

When the cargo having temperature of 55°C or higher is loaded in accordance with the above requirement and the thickness of the layer of the cargo to be loaded is bigger than 1.0 m, the cargo shall first be loaded within a layer, the thickness of which is between 0.6 m and 1.0 m.

After the completion of loading operation specified in the above paragraphs, the loading operation may proceed. The cargo shall be trimmed in accordance with the cargo information.

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