Thermalpas field deployment (Taiwan) · Power & Electrical
Taipower coal plants: closing a 23-hour blind spot on soot blowers
Pipe-clamp thermal inspection of soot-blower angle valves — the precursor to the FPCC Mailiao system.
- 23 hrFormer daily blind spot
- 24/7Now continuous
- PrecursorTo FPCC Mailiao

The problem
Before automated thermal monitoring, coal plants sent an operator with a handheld pyrometer past every soot-blower angle valve twice a day to log the temperature. That left a 23-hour blind window every day in which an internally leaking valve could vent steam onto a boiler tube and slowly cut through the wall — tens of millions of dollars in shutdown losses when a tube finally ruptures.
What was installed
A Thermalpas L-TYPE pipe-clamp thermometer was installed on every soot-blower angle-valve outlet — strapped over the outside of the pipe, with no welding and no drilling. Readings were monitored 24/7; if a valve that should be closed was venting steam, the temperature rise showed immediately and the operator was paged.
The outcome
This site was the precursor to the FPCC Mailiao project — the case that showed soot-blower monitoring was worth automating across an entire plant.
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