Understand how the furnace, reversal chamber and smoke tubes form a multi-pass gas path and why water inventory affects response and safety.
Core concept
Start with the physical mechanism rather than a memorised definition. Trace the relevant flow and identify where energy, pressure, temperature or material condition changes.
Plant significance
Relate the concept to readings, alarms, operator actions, maintenance evidence and inspection findings.
Key takeaways
- Know the system boundary and flow path.
- Recognise normal and abnormal indications.
- Explain the failure mechanism.
- State the preventive control.