As part of a strategic operational upgrade, a chemical facility planned the installation of a new gravity-feed bulk solids unloading system. The project was driven by the need to improve the handling of anhydrous aluminum chloride, a material known for its extreme reactivity with moisture and metal surfaces. The facility’s existing pneumatic unloading system had become increasingly vulnerable to corrosion, clogging, and operational downtime, creating reliability concerns and increasing maintenance demands.
To address these issues, the facility elected to transition to a gravity-fed bulk bag unloading approach designed to simplify operations, improve containment, and support increased throughput demands. The new system needed to function within a highly space-constrained warehouse while minimizing risks associated with corrosive dust, HCl gas release, and moisture exposure. In addition to improving reliability, the upgraded operation was expected to support future production increases of up to two trailer loads per day without compromising worker safety or environmental compliance.
The engineering scope included the design and integration of the unloading platform, hoist system, dust collection equipment, and ventilation systems. Early in the project, an Issued for Approval (IFA) steel platform design was developed alongside an Opinion of Probable Construction Cost (OPCC) evaluating both steel and FRP (Fiber Reinforced Polymer) platform options. After reviewing the alternatives, the client selected an FRP platform approach, requiring significant redesign efforts to accommodate updated structural connections, revised layouts, and integration with the dust collection system.
As the project evolved, additional modifications were required after concerns were identified related to site air permit limitations and personnel access clearances around the platform. The dust collection system was redesigned to reduce airflow requirements and maintain compliance with permit restrictions, while the structural layout was adjusted to improve access for truck trailers, ladders, and operating personnel. These updates culminated in a revised IFC package that provided a safe, constructible, and operationally efficient solution.
One of the project’s greatest strengths was its adaptability. Despite substantial design evolution throughout execution, the engineering team maintained strong communication with the client and effectively managed scope growth through structured change orders. The project also prompted valuable internal discussions regarding deliverable standards and the distinction between IFA, IFB, IFC, and fabrication-level drawing packages, particularly given the highly detailed documentation provided for the FRP system.
The completed design delivered a safer and more reliable unloading operation while reducing the maintenance burden associated with the legacy pneumatic system. The project demonstrated the importance of combining process design, structural engineering, ventilation strategy, and cost-conscious decision-making to create practical industrial solutions that support long-term operational goals.
