Risks And Precautions For Nickel Ore Shipments From The Solomon Islands

By
Mfame Editor
-
20

With Indonesia restricting nickel ore exports and a decline in exports from the Philippines, shipping activity to the South Pacific islands—including the Solomon Islands and New Caledonia—has increased. However, loading nickel ore in the Solomon Islands presents significant risks, particularly cargo liquefaction, as evidenced by a recent incident in Noro and Siruka Bay, where a bulk carrier had to divert due to liquefaction in two holds.

Cargo Risks and Conditions

High Moisture Content Due to Tropical Climate

  • The Solomon Islands experience frequent heavy rainfall, increasing the moisture content of nickel ore and raising the liquefaction risk.

Nature of Nickel Ore

  • The region’s nickel ore is primarily Direct-Shipped Ore (DSO), with minimal processing.
  • It contains sand, silt, and clay, where higher clay content increases moisture retention and reduces stability under loading stress.

Testing Challenges

  • Traditional flow table tests for Transportable Moisture Limit (TML) may not accurately reflect liquefaction risks due to clay strength.
  • A remote survey was conducted in a recent shipment due to a lack of local surveyors, but issues arose:
    • Visibly wet cargo was provided by shippers.
    • Some barges were rejected due to failed can tests.
    • Crew-performed can tests were of poor quality, leading to uncertain results.

Recommendations for Safe Loading

Preloading Survey

  • Onsite survey (preferred) or remote survey must be arranged to assess cargo conditions.

Reject Wet Cargo

  • Cargo appearing soft, wet, or sticky should be rejected.
  • Loading must stop immediately if water is detected in cargo.

Modified Can Test Procedure

  • Select representative samples from a 500 mm depth in barges.
  • Perform an oven-dry test to compare moisture content with MC/TML certificates.
  • Conduct a structured can test:
    • Document density/moisture changes in samples.
    • Perform a grab test—if cargo splashes or slumps, it is unsafe.

Direct Communication

  • Ensure continuous reporting between the master, crew, and surveyors to promptly address issues.

Proper risk assessment and strict adherence to the IMSBC Code are essential for safe nickel ore transport from the Solomon Islands. By following these preventive measures, shipowners can reduce liquefaction risks, ensuring the safety of vessels and crew.

Did you subscribe to our daily Newsletter?

It’s Free Click here to Subscribe!

Source: SKULD