3 Ways Suspended Platforms Increase Efficiency for Vertical-Vessel Maintenance
It’s time to upgrade maintenance practices for vertical vessels. Like any routine maintenance, inspecting, removing and replacing refractory in vertical vessels places a costly burden on facilities in terms of downtime and lost productivity. One of the main reasons for this is the traditional solution for accessing vertical surfaces – scaffolding – severely limits efficiency. It also increases safety risks for employees.
Processing facilities are taking action to reclaim maintenance productivity and safety by investing in custom-manufactured suspended platforms for vertical-vessel operations. These systems feature a lightweight, heavy-duty metal platform that is erected inside the vessel and raised or lowered using manual or electric hoists for hassle-free maintenance and relining applications.
Suspended platforms offer a number of benefits over scaffolding systems, starting with effectively eliminating the protracted setup times that dominate scaffolding-based maintenance schedules. Here’s how these customized systems can boost productivity and safety throughout the maintenance process.
The amount of time scaffolding systems take to erect is their biggest deterrent and the greatest drain on maintenance productivity. This is due in part to the sheer complexity of the operation, which includes juggling a variety of pipes, hardware, boards and other materials to create the structure. Erection times vary based on vessel size and configuration, but even with an experienced crew, scaffolding can take several shifts all the way up to an entire week to construct. This puts significant stress on maintenance budgets and timelines.
To simplify the process and decrease setup times, steel suspended platform implement a modular design and pin-together construction. This greatly reduces the number of components and tools required for erection and allows crews to complete setup in as little as two hours.
Modular components manufactured from high-strength 6061-T6 aluminum provide the same strength as steel at one-third of the weight. And, because vertical vessels often feature small access points, manufacturers limit the size of modular components. The resulting pieces are easy to maneuver, weighing 40 pounds (18 kg) or less, and fit through a 22-inch-diameter (560-mm-diameter) access hole. This provides a lighter, more easily maneuverable solution than scaffolding’s heavy wooden planks and steel pipes, some of which are up to 14 feet long.
In addition, pin connections allow for fast assembly and improve platform strength over welded connections by allowing for some flexibility while the platform is being raised or lowered. Welded joints are rigid, which increases stress on risers at platform joints. Pin-together joints are a better solution to help maintain safety and stability when dealing with varying speeds from the climbing hoists.