Stoneware equipment has glass interiors, and cracking can occur due to improper human operation or stress issues. When considering cost savings, there may be a need to send the equipment back for re-stoning. However, this does not mean it can be continually re-stoned and reused. If the stoneware reaction kettle equipment exhibits any of the following issues, it should be immediately disposed of as scrap:
For instance:
During hydrostatic testing, the glass-lined reaction tank showed significant deformation or deformation amounts exceeding the national standard specifications.
2. Local wall corrosion of the pot or jacket exceeds the smaller value specified by design, and the corroded area is greater than 20% of the total area.
When non-conforming defects (such as severe structural defects that threaten safe operation, inadequate welds, severe incomplete welds, cracks, etc.) cannot be repaired.
4. The glass-lined reactor vessel or jacket wall exhibits uniform corrosion beyond the smaller value specified by the design.
When alkali brittleness or intergranular corrosion is severe, and cracks in the kettle body or welds cannot be repaired.
Note: After the equipment is returned to the factory for repainting, due to the reduction in base material thickness, the equipment should be operated at a reduced voltage or used as a storage tank after repair.
