1. Keep the boiler evaporation capacity within the rated value, and satisfy the requirement of the unit load. 

2. Keep the normal steam pressure, steam temperature, bed temperature and bed pressure. 

3. Evenly supply water to maintain the normal water level. 

4. Ensure the quality of boiler water and steam to be qualified. 

5. Maintain good combustion, reduce heat loss and improve the thermal efficiency of boiler. 

6. Adjust the boiler operation condition and maintain the operation parameters on the best working condition as far as possible.