Scrap is divided into forced scrap and active shutdown. Compulsory scrapping means that the boiler is unqualified after inspection by the inspection department, cannot meet the conditions for safe operation, and has no repair value or the property owner has given up on repairs. It will be forced to be scrapped by the quality supervision department. Active shutdown means that the user voluntarily stops using the boiler for non-safety reasons. Regardless of the situation, the property owner should go to the local quality supervision department to handle the shutdown procedures and hand in the boiler use certificate and registration certificate. The quality supervision department will cancel the boiler online.