High temperature limit switch and temperature controller fails to shut off gas supply to boiler

Persona

Technologies

Reference number
II-1000791-2020 (#16966)

Location: Chilliwack

Regulated industry sector: Boiler, Pressure Vessel & Refrigeration

Incident overview

The high temperature limit switch and temperature controller of a boiler located in the mechanical room of an apartment building failed to shut off the gas supply to boiler, causing a release of water at high temperatures through the safety relief valve.

 

Attachment Size
16966-1000791.pdf 1.47 MB