Explosion inside steam boiler and vent stack in industrial bakery
October 23, 2019
Regulated industry sectors:
- Gas - Natural gas system
Boilers, PV & Refrigeration - Boiler and pressure vessel system
An explosion occurred inside a steam boiler and vent stack in the mechanical room of a large industrial bakery. Evidence showed required routine maintenance procedures were skipped. The skipped maintenance procedures resulted in an excessive spark gap, which contributed to an unstable pilot flame, allowing unburnt gas to accumulate, causing the explosion.