Small air separation unit material production process should reduce grease and debris pollution and reduce the amount of subsequent processing works and processing difficulties. Small air separation unit material section in the factory before, transport and storage process using the adoption of strict closed measures to prevent secondary pollution. Specific measures are: Store small parts in pockets: Close the openings of the small air separation unit : Nitrogen sealing or drying and other methods to protect carbon steel small air separation unit oxygen piping storage and transport process, shall not be in contact with non-alloy steel, low-alloy steel piping components to prevent stainless steel piping carburization.
Oxygen piping material acceptance: oxygen piping components (pipes, valves, fittings, flanges, etc.) should comply with the relevant requirements of the design provisions and specifications, must have quality certification documents, no quality certification documents of the product shall not be used. Before the product is used, the quality certification document should be reviewed and checked with the physical object. The construction procedures of bevel grinding, undercutting grouping and welding of pipes are carried out according to the original welding scheme of the coal gasification project. Oxygen pipeline prefabrication is non-destructively tested at 100% RT flaw detection. The opening and welding of the instrumentation taking source components on the pipeline shall be carried out prior to the installation of the pipeline.
The characteristics of oxygen piping for small air separation unit determine its high quality requirements, therefore the oxygen piping manufactured by Dear Air Separation is strictly implemented in every step of the process and technical measures to ensure the safe and stable operation of the small air separation units, large air separation units and liquid air separation plants.
