來源： 日期：2022-07-25 發布人：
1. Before the installation of pipelines, the equipment nozzles, embedded parts, reserved holes, steel structures and other contents related to the installation of pipelines shall be reviewed.
2. The slope of the pipeline shall be adjusted according to the requirements of the drawing. The adjustment method can use the support to meet the slope requirements. The weld shall be set at a place convenient for maintenance and observation.
3. The pipes connected with the transmission equipment shall be cleaned internally before installation. The welded fixed pipe orifice shall generally be away from the equipment to avoid the impact of welding stress on the installation accuracy of the transmission equipment.
4. Before connecting the pipe with the machine, the relative strength should be prevented, and the parallelism and coaxiality of the flange should be checked in the free state.
5. The safety valve should be installed vertically. When it is put into trial operation, the safety valve should be adjusted in time. The subsequent adjustment of the safety valve shall be carried out on the system, and the opening and reseating pressure shall comply with the provisions of the design documents.
6. Before installing the valve, check its model according to the design documents, and determine its installation direction according to the flow direction of the medium. When the valve is connected with the pipeline in the form of flange or thread, the valve shall be installed in the closed state; If it is installed by welding, the valve shall not be closed.
7. Temporary replacement of instrument elements: all instrument elements shall be replaced by temporary elements during installation, and shall be formally installed after pressure test, flushing and purging, and before feeding.
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