17
April
2025

Operational Alert: Reach Stacker Tip Over

Operational Alert’s, inform Signal Mutual Members of serious incidents or a significant near-miss within the Mutual. If you have similar operations, please share this Operational Alert with operation managers, supervisors, equipment operators, and all affected employees. It is imperative that management, at all levels review their operations for similar hazardous conditions, acts, and their controls.

A reach stacker tip-over incident while operating the equipment along a roadway adjacent to a stack of shipping containers. The root causes were identified as excessive operating speed and an overextended boom. These cumulative factors compromised the machine’s center of gravity and led to a forward loss of stability.

Operational Alert: Reach Stacker Tip Over