What is the typical service life of medium-pressure boilers?

Generally speaking, the design life of a boiler is 30 years, but it can also be used for 50 years without any problem. However, even if there’s no issue with its lifespan, there are many other problems. First and foremost is the issue of energy conservation and emission reduction; since the boiler is old, its efficiency is likely to be low. The maintenance costs are also high, and old boilers tend to have numerous issues. If renovation is carried out, it will incur costs as well. So the best advice is to replace it with a new boiler! I’m not sure if there are any relevant regulations regarding disposal, but you definitely need to go through the inspection by the boiler inspection agency; only after they give approval can it be used.

The high-pressure boilers in power plants are designed to last around 15 years, but they actually serve for several decades, and people are reluctant to replace them! !

The design life is generally 20 years, and a pressure test must be conducted after 100,000 hours of operation. If the pressure test is successful, the device can continue to be used; however, once its design life expires, it usually has to be retired. In reality, many factories do not comply strictly with these requirements; those that maintain their equipment well may continue to operate beyond the recommended lifespan. Those with poor maintenance, frequent heavy use, and severe scaling may need to be replaced in less than a decade.

The service life of boilers is not specified in the relevant boiler technical specifications and standards; however, the \"Regulations on Safety Inspection of Steam Boilers\", the \"Regulations on Safety Inspection of Hot Water Boilers\", and the \"Rules for Periodic Inspection of Boilers\" all stipulate that \"in-service boilers should generally undergo an external inspection once a year, an internal inspection every two years, and a hydrostatic test every six years\"； For boilers that cannot undergo internal inspections, a hydrostatic test should be carried out every three years ； The internal inspection and hydrostatic testing cycles for power station boilers can be appropriately adjusted in accordance with the plant’s major maintenance cycle ； The boiler can only be put into operation when the internal inspection, external inspection, and hydrostatic test are all within their valid periods. No matter how many years a boiler has been in use, as long as it passes regular inspections and meets the operating requirements, it can continue to be used ； When the regular inspection does not meet the normal operating conditions, conclusions such as allowing operation, permitting operation after rectification, operating under restricted conditions, or stopping operation can be drawn in accordance with Articles 41, 42, 53, and 60 of the Rules for Regular Inspection of Boilers.

The standard design life is 30 years! ! ! !