What is the maximum allowable temperature of the flue gas during a boiler dry lay-up?

The maximum allowable temperature of the flue gas during a boiler dry lay-up is 200°C. This temperature is critical to prevent potential damage to the boiler and associated components. During a dry lay-up, the boiler is not in operation, and the temperature must be controlled to avoid issues such as corrosion or thermal stress that could arise from excessive heat.

Maintaining flue gas temperatures at this level ensures that any residual moisture in the system does not condense, which could lead to corrosion and long-term degradation of the boiler materials. Additionally, if the flue gas temperature is too high, it increases the risk of heat damage to seals, insulation, and other sensitive parts of the system.

Understanding this maximum temperature is essential for anyone involved in the operation and maintenance of boiler systems, as it helps ensure the longevity and reliability of the equipment during periods of inactivity.