Any repair work of AAC reaction caldron must be carried out under the condition of no pressure, the repair work of pressure parts must be held by a qualified welders.

The repair of autoclaved kettle pressure parts must ensure that the original design and manufacturing quality requirements, must ensure the structure and strength to meet the requirements of the safe use. And according to the results of the repair quality and strength, we need to calculate the working pressure again.

The major repair and reconstruction of reaction caldron, such as repair welding, remedy, replace shell and the kettle body or change the structure, should be approved by the original design unit and report to the construction unit, we also need to make a record on the municipal safety supervision organization.

The major repair and reconstruction of reaction caldron in the aeroconcrete must conduct a comprehensive inspection, after the inspection qualified, it can be used again.

The major repair and renovation should have design drawings, materials, construction quality, certificate of inspection technologies. After the kettle has been repaired, all materials shall be stored in autoclaved kettle technology archives.

The following regular maintenance must be done in the operation process: 1.Any mass are not allowed to crash kettle lid and body and produce mechanical damage. There is no chain and steel rope to make a friction with pot cover. 2. Cleaning the water residue once a day at the bottom of kettle bottom, take a thorough cleaning on a regular basis, remove sludge from the drainage device regularly. 3. Keep the bottom of activities bearing clean to make the bearing free expansion. 4. Keep hand reducer in good lubrication. 5. the outer appearance of sealing ring should be lubricant on a regular basis.