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Gard Guidance Masters HEATING OF CARGO

A. Heating of cargo due to its properties
Some dry bulk cargoes are prone to heating. Prior to the commencement of loading operations, the Master should seek documents showing
  • the properties of the cargo, such as fat and moisture contents
  • the duration of storage prior to loading.

    If the Master is in any doubt as to the authenticity of the documents, he/she should request assistance from the Company.

    If cargo prone to heating is to be loaded, certain precautions should be taken, such as
  • placing temperature probes vertically and horizontally in the cargo
  • performing daily temperature checks, the results of which should be entered in the logbook or in the relevant ship’s forms.

    If direct reduced iron (DRI) in any form or cargoes with similar properties is to be loaded the Master need to obtain special instructions from the shipper and the Company for the loading and carriage of such a cargo.

    For details please refer to
  • Gard News 178, Understanding the different direct reduced iron products, and
  • Gard Loss Prevention Circular No. 07-03: The dangers of carrying Direct Reduced Iron (DRI).

    B. Heating of cargo stowed on or near fuel tanks
    For details please refer to Gard News 176, Major cargo claims analysis – Dry bulk and unitised cargo.

    When loading a dry bulk cargo the Master should agree the distribution of the cargo with the Chief Engineer to prevent the cargo heating or being damaged due to heating of bunker oil tanks below or adjacent to the cargo compartments. If, nevertheless, bunkers need to be heated, the calibrated temperature sensors will need constant monitoring. If possible, sheathing insulation should also be used.

    Calibrated temperature monitoring recorder, steam heating lines and other equipment in the engine room need to be in proper working condition and need to be checked frequently.