Contents and methods of pressure vessel inspection

When inspecting the pressure piping of pressure vessels, the most commonly used methods are hydrostatic testing and external and internal inspections. When inspectors inspect pressure vessels, they need to check in detail the equipment support, manufacturer, protective device, and quality appearance of the product. In addition, it is necessary to carry out spot checks at any time on the safety status of weld flaw detection. When inspecting the appearance, inspectors should pay high attention to the direction of pipelines and platforms, insulation, etc., and when inspecting pressure pipelines, they should also promptly inspect the expansion status of relevant pipelines, technical data, and the quality of installed pipelines. hydrostatic test. In addition, the inspectors should also closely monitor the water discharge and drainage of the pipelines. When inspecting the outside, it is necessary to keep the pressure vessel in working condition, and ensure that the inspection is performed at least once a year. Among them, it should be noted that inspectors need to check the appearance of the first-time use container and the appearance of the product after it has stopped working for one year. Once the pressure vessel is modified on a large scale, its appearance needs to be checked in time. When inspecting its interior, it should be inspected when it stops working, and it must be inspected at least once every two years. The internal inspection work is usually carried out after a special situation occurs when the pressure vessel is working. During the inspection process, the internal tightness and safety of the vessel need to be thoroughly inspected. In general, hydrostatic testing is required every six years, but not in conjunction with internal inspections. If a problem occurs during hydrostatic testing, it will prevent the pressure vessel from being re-worked after completion of the inspection.