Five-High Empty Stack Collapse During Typhoon Recovery

1. Stop the job. Radio the RTG to land and park its suspended load and shut down; a 40 t machine with a box at 6 m near a collapsed stack is the next casualty. Isolate it.
2. Emergency call now, not after the recovery attempt: 999 with a clear script - one casualty trapped in a cab, unstable container overhead, diesel leak, block W, gate and rendezvous point - plus the terminal emergency control room and the duty manager.
3. Remove ignition sources and stop traffic. The fuel line is dripping: no engines, no hot work, no vehicles through the next lane; spill kit and absorbent, and a cordon at both ends of the lane.
4. Refuse the RTG lift - and say why. It is the crux of this case: the box is unstable and partly resting on the trailer; the RTG has no rigging plan, no slinging assessment, no idea of the load path, and no ability to control the box if it shifts. Lifting it could roll it further onto the cab and kill the driver, and would put the machine and its driver into the collapse zone. Untrained improvisation also destroys the evidence of why the collapse happened. Leave the lift to the fire service with shoring and crane expertise, under a plan.
5. Casualty care. First aiders to the driver, keep him still and talking, control bleeding, do not move him unless there is immediate life threat; monitor for crush syndrome.
6. Assess the remaining stack and the leaning box from outside the fall zone, and keep everyone out - including would-be rescuers.
7. Preserve the scene: do not move the prime mover, do not re-stack, photograph before anything is disturbed.
8. Log times, decisions and who authorised what as it happens.

Statutory / external

• Emergency services - Fire Services, ambulance, police; police attend workplace fatalities and serious incidents.
• Commissioner for Labour. The F&IUO requires notice of an accident in an industrial undertaking causing death or injury; the Employees' Compensation Ordinance requires the employer's report within 7 days for a fatal accident and 14 days for a non-fatal injury causing incapacity. If the driver dies, the fatality track applies, and the terminal should notify immediately rather than waiting for a form.
• Marine Department where the incident engages the vessel, the terminal's marine operations or cargo documentation.
• Labour Department inspectors will want the scene preserved; do not clear the stack before they attend unless life-saving requires it, and then photograph and record what was moved.

Internal

• Duty manager, terminal safety officer, the emergency response plan's call-out tree, and the operations director; a family liaison point for the driver.
• Client/shipping line notification per the operating agreement, and the insurer's incident line.

Records to secure the same night

• CCTV of block W, the RTG data logger, the prime mover's tachograph and defect history, the driver's hours.
• The yard plan and stack height record for block W, the re-stacking work order and who authorised the 23:00 restart.
• The post-typhoon inspection record, the terminal's typhoon procedure and the pre-typhoon securing checklist.
• Weather data (rainfall, wind, when the signal was lowered), the ground condition survey, and the maintenance history of the apron.
• The container condition records - corner post corrosion, floor, CSC plates - and the twistlock/interlock status of the stack.

Reasoning: the statutory clock runs from the accident; the investigation quality depends on what is captured in the first hours.

Start from the physics, then go to management.

• Stack height against the standard. What does the terminal's own rule allow for empty 40ft boxes in this wind zone, and did block W exceed it? Five high is at or beyond the limit in many yards, particularly with empty boxes that have low mass and high sail area.
• Ground bearing. Five empty 40ft boxes at roughly 3.8 t each is about 19 t carried on four corner castings - heavy point loads onto a cracked apron over a waterlogged sub-base. Settlement under one corner tilts the stack, and the load path shifts onto the corner posts. Ground condition is a design input, not a background detail.
• The containers themselves. Corroded corner posts and floors reduce the compressive capacity of the stack; a five-high stack is a column, and the bottom boxes carry the whole load.
• Interlocking. Were the boxes connected to each other or free-standing? Free-standing empty stacks rely entirely on friction and alignment.
• Typhoon procedure. Did the pre-typhoon plan require de-stacking to three high, lashing or strapping stacks, removing the top tier, or clearing the windward rows? Was that done and recorded?
• The restart decision. Re-stacking at 23:00, two hours after the signal was lowered, without a documented post-typhoon inspection of ground and stacks, is a management decision that the investigation must test - who authorised it, on what information.
• Supervision and workload. Recovery pressure, night shift, fatigue, and a supervisor improvising a rescue all point to production pressure overriding procedure.

Most likely system findings: the stack sat outside the wind/ground standard or the standard was never enforced; the post-typhoon inspection was skipped under recovery pressure; and the emergency plan assumed a rescue capability the yard did not have. Bad luck is the one explanation the evidence rarely supports.