Waste Heat Recovery Unit Diverter Failure Leads to Temperature Spikes and Leaks During Startup
Incident Investigation
Waste Heat Recovery Unit Diverter Failure Leads to Temperature Spikes and Leaks During Startup
December 4, 2023
Boiler, PV and Refrigeration
Reference Number:
II-1649690-2023 (#42097)
Location: Northeastern BC
Regulated industry sector: Boilers, PV & Refrigeration - Boiler and pressure vessel system
Incident overview
During the operation of a waste heat recovery unit, a diverter valve stuck open, causing a temperature spike and triggering the high temperature alarm. At the same time, a second heater in the series developed a leak in its heat medium coil due to a cracked weld.