Pressure vessel during the use of maintenance should pay attention to
Eliminate corrosion factors. Some working medium only under certain conditions on container material corrosion. So try to eliminate this can cause corrosion, especially stress corrosion condition. Carbon monoxide gas, for example, only in the case of containing water may cause stress corrosion on the steel container, should try to adopt measures to drying, filtration, etc; Carbon steel container of alkali fragile requires, such as temperature, tensile stress and higher alkali concentration condition, medium containing dilute alkali liquor containers, measures must be taken to eliminate the thin liquid enrichment conditions, such as joint leakage, poorly to the wall and porous material such as rust, etc.; Oxygen containers, often caused by bottom water interface severe corrosion was water and oxygen, to prevent the corrosion, and make the best of oxygen after dry, or in use often discharge the water in the container.
The use of the pressure vessel to be used under specified parameters, shall not be used beyond. Regularly check appearance of pressure vessel, container appearance no beat, no deformation, no leakage, no signs of crack, found the anomaly should be processed in a timely manner. To take over, fasteners, sealing parts, etc. No damage and leakage phenomenon. Safety accessories (pressure gauge, safety valve, etc.) should be complete, correct installation, regular inspection, testing, to ensure reliable. Real-time to portable exhaust steam, air security valve pressure test, prevent the safety valve rust, adhesion, jams, etc. 4, to find out the unsafe factors, must be to determine the reason, make rectification content and time, designate personnel to carry out the rectification, the rectification to implement preventive measures. The operation of the pressure vessel and maintenance should be tested and approved by the professional training, the holder on duty. Pressure vessels shall be regularly inspection, before use. The operational parameters of pressure vessel once more than the allowable values, still not to take measures to effectively control, emergency stop running.
To strengthen the container maintenance during outage. For long-term or temporary discontinuation of container, should strengthen the maintenance. Discontinuation of container, exclude internal medium must be clean, corrosive medium should pass emissions, replacement, cleaning and other technical processing. Attention should be paid to prevent container "blind Angle" accumulated corrosive medium. Always keep containers dry and clean, prevent atmospheric corrosion. The experiment proved that under the condition of damp, steel surface dust, dirt, atmospheric corrosion of steel is.
Intact anti-corrosion layer. Working medium corrosion materials for containers, anticorrosive coating is often used to prevent medium on the wall of the corrosion, such as paint, spraying or plating, lining, etc. If the coating is damaged, working medium will direct contact with the wall and the corrosion, so check often, keep the anti-corrosion layer intact. If found the coating damage, even local, also should properly handle by repair, etc will continue to use later.
