The shutdown-ready refractory inspection: what to document before work begins
A clear inspection record helps turn a short shutdown window into a safer, more predictable refractory work scope.
Start before the shutdown
A refractory shutdown is usually decided before the first section of lining is removed. The most useful scopes begin with the operating team’s observations: recurring hot spots, process instability, areas of repeated patching, and any shell-temperature concern. Capturing this information while the unit is still in service gives the inspection team context once access is available.
Build one inspection record
During the shutdown, use the same sequence for every lining zone. A labelled record makes it possible to compare the next outage with the last one instead of starting from zero.
| Inspection area | What to record | Why it matters |
|---|---|---|
| Lining surface | Thickness, cracks, open joints | Confirms wear rate and repair boundary |
| Process-facing zone | Chemical attack, build-up, abrasion | Helps match material choice to the wear mechanism |
| Shell and anchors | Distortion, corrosion, exposed steel | Identifies work that must happen before relining |
Turn findings into a work plan
- Separate immediate safety repairs from planned replacement and monitoring items.
- Define demolition limits, material quantities, access requirements, and installation method for each work item.
- Set inspection hold points before lining, after installation, and before dry-out.
Practical note: photographs are most useful when they are labelled against a simple zone map and paired with a thickness or condition observation.
Close the loop after restart
Keep the inspection record, installed material batch details, dry-out notes, and first-operation observations together. Over time, this history helps distinguish normal wear from a recurring condition that may require a change in material selection, installation practice, or operating control.