Operation steps for tube sheet protection

Operation steps for tube sheet protection
1. Open the condenser end cover
Dry the water on the surface and inside of the pipe with a blower and blower, then plug the pipe orifice with a cork and cover the flanging to ensure that the pipe orifice is not damaged during sand blasting.

2. Sand blasting: during sand blasting, cover it with canvas and others to prevent the ejected sand from contaminating other equipment. Quartz sand or carborundum shall be used for sand blasting, which can produce a surface of 4 mils without more dust. The natural color of the base metal shall be played all the time. Remove the cork after sand blasting.

3. Solution cleaning: clean the impurities and oil stains on the metal surface with acetone.

4. Coating material: first fill the pit on the inner wall of the condenser tube plate with polymer metal repair material to avoid eddy current of water during operation until the required plane is reached. Then apply the polymer fluid protective material evenly to the whole repaired surface. Pay special attention to the joint between the panel and the pipe to achieve the purpose of sealing and plugging.

5. Curing: curing shall be carried out according to the curing requirements of materials, and can be put into production after curing.