As boilers in continuous operation deteriorate over time and maintenance costs increase, it is common for many boiler systems to develop increased air ingress (air leaking into parts of the system under suction), including the boiler, backpass, airheater and flue gas ducts.
Air ingress leads to higher volumes of flow at the ID fans and this can lead to them reaching their operational limits and potentially becoming the limiting factor on boiler load and causing a unit de-rate.
RJM offers a Boiler Air Ingress Study & Thermal Survey to tackle this very problem.
The service includes a boiler performance test to enable mass balance and O2 balance mathematical models to be created, allowing RJM to calculate the volume of air leaking into the system.
The Thermal Survey involves surveying the entire system with a thermal camera to identify hot-spots which are also potential sources of air ingress.
This information is then used to make targeted maintenance recommendations to reseal the boiler system and mitigate leakage.