Superphosphate
SUPERPHOSPHATE
Schedule source MSC.539(107), Annex 9, Appendix 1, IMSBC Code Amendment 07-23 · pages 438, 439
Description
Greyish-white. Moisture: 0% to 7%. Hygroscopic.
Hazard
No special hazards. This cargo is hygroscopic and will cake if wet. This cargo is non-combustible or has a low fire risk.
Stowage and Segregation
No special requirements.
Hold Cleanliness
Clean and dry as relevant to the hazards of the cargo.
Weather Precautions
This cargo shall be kept as dry as practicable. This cargo shall not be handled during precipitation. During handling of this cargo, all non-working hatches of the cargo spaces into which this cargo is loaded, or to be loaded, shall be closed.
Loading
Trim in accordance with the relevant provisions required under sections 4 and 5 of IMSBC Code.
Precautions
The hold trimming plates and tank tops of the cargo spaces for this cargo shall be lime-washed or coated with paint to prevent corrosion.
Ventilation
The cargo spaces carrying this cargo shall not be ventilated during the voyage.
Carriage
Moisture from condensation, cargo heating or leaking hatchcovers may cause formation of phosphoric or phosphorous acid, which may cause corrosion to steelwork. After the completion of loading of this cargo, the hatches of the cargo spaces shall be sealed, as necessary. This cargo will decompose burlap or canvas cloth covering bilge wells.
Discharge
Superphosphate is hygroscopic and may cake in overhangs, impairing safety during discharge. If this cargo has hardened, it shall be trimmed to avoid the formation of overhangs, as necessary.
Clean-up
After discharge of this cargo, particular attention shall be given to bilge wells of the cargo spaces.
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