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Try to answer some parts; I’ll wait for the original poster’s answer. 1. 1. Pipelines should be installed overhead or on the ground ； If necessary, it can be laid in a trench. 2. 2. The main corridor pipe rack of the device should have 10~20% spare space, taking its... into consideration. 3. The layout of pipelines with special requirements regarding the conveying medium, as well as large-diameter pipelines, shall comply with the requirements of equipment layout and the process flow. 4. The piping layout shall not hinder the installation, maintenance of equipment, pumps, and their valves, nor the passage of fire-fighting vehicles. 5. The piping layout should provide the piping system with the necessary flexibility. While ensuring the flexibility of the pipes and that the forces and moments exerted by the pipes on the equipment and pump nozzles do not exceed allowable values, the pipes and their components should be designed accordingly. 6. The installation of pipelines should be considered at the same time as pipeline planning. 7. The pipeline layout should be arranged in a manner that gradually increases or decreases in level, in order to reduce the formation of air pockets or liquid pockets. Otherwise, venting and draining should be provided according to operational and maintenance requirements. Piping layout should minimize \"dead corners\". 8. For pipes with insulation, supports should be provided at pipe supports and pipe racks. 9. Steam branch pipes should branch off from the top of the main steam pipe, and the valves on these branch pipes should be installed on the horizontal section of the pipe that is close to the main pipe. 10. For steam vent pipes that discharge directly into the atmosphere, a Φ6mm weep hole should be provided near the elbow at the lower end of the pipe. 11. When the height of the center of the valve handwheel is more than 2m above the operating surface, valves that are not operated frequently can be operated using ladders, movable platforms, hinges, etc. 12. When the height of the center of the valve handwheel is more than 2 m above the operating surface, platforms should be provided for valves that are operated frequently or for groups of valves arranged together. 13. The safety valve should be installed at a high point and close to the equipment or pipeline being protected. If it is not possible to arrange it at a close distance, the total pressure from the protected equipment or pipeline to the inlet of the safety valve shall not exceed 3% of the set pressure value of the safety valve. 14. There should be a clearance of not less than 200 mm above the top of the control valve diaphragm head. When arranging control valves and bypasses, they should be placed vertically. 15 The installation location of the drain valve should not be lower than the drain point. 16 The installation location of the drain valve should be convenient for maintenance. 17 SH3501 classifies pipes into 4 grades, namely SHA, SHB, SHC, and SHD. 18 Pipe layout drawings should preferably use size A0; for simpler designs, A1 or A2 can also be used. Maps in the same area should use the same map scale. The size of the image should not be increased in length or width. 19. The title of the pipeline layout diagram is usually divided into two lines: the pipeline number is written on the upper line, while ELXXX.XXX Plan is written on the lower line. In the 20-pipe layout diagram, dimensions that are not drawn to scale should be shown in a single-line diagram below. 21 The piping layout diagram should include direction indicators as well as coordinates indicating the position of this diagram within the facility. 22 The piping layout diagram should show the buildings, beams, doors, windows, trenches, stairwells, and other elements related to the civil engineering aspects. 23 When connecting to other specialized pipes, the destination must be indicated and the connection shall be terminated with a double-dashed line; the plan showing these connections should specify COD 1705II-670/???-045, and the boundary area should be marked as B.L. The reflux openings of a 24-column tower are generally located on the pipe side above the tray; the internal structure of the reflux pipes and the position of their openings depend on the liquid receipt method of the tray. 25 The vapor return port of the reboiler should be located on the center line of the tower, opposite to the liquid receiver.

1. Pipelines should be installed overhead or on the ground； If necessary, it can be buried in the ground or laid in a trench. 2. The main corridor pipe rack of the device should have 10~20% free space, taking its load into consideration. 3. The layout of pipelines for which the conveying medium imposes special requirements regarding distance, angle, elevation difference, etc., as well as large-diameter pipelines, shall comply with the requirements of equipment layout and the process flow. 4. The piping layout shall not hinder the installation, maintenance of equipment, pumps and their internal components, nor the passage of fire trucks. 5. The piping layout should provide the piping system with the necessary flexibility. While ensuring the flexibility of the pipeline and that the forces and moments exerted by the pipeline on the equipment and pump nozzles do not exceed allowable values, the pipeline should be as short as possible with as few components as possible. 6. The placement of support points should be considered simultaneously with pipeline planning. 7. The pipeline layout should be arranged in a manner that gradually increases or decreases in level, in order to reduce the formation of air pockets or liquid pockets. Otherwise, venting and draining should be arranged according to operational and maintenance requirements. The piping layout should minimize \"blind loops\". 8. For pipes with insulation, pipe supports should be installed at pipe piers and pipe racks. 9. The steam branch pipe should branch off from the top of the main steam pipe, and the isolation valve on the branch pipe should be installed on the horizontal section of the pipe near the main pipe. 10. For steam vent pipes that discharge directly into the atmosphere, a drainage hole with a diameter of Φ6mm should be provided near the elbow at the lower end of such pipes. 11. When the height of the center of the valve handwheel is more than 2 m above the operating surface, valves that are not operated frequently can be operated using ladders, mobile platforms, extension rods, etc. 12. When the height of the center of the valve handwheel is more than 2 m above the operating surface, operating platforms shall be provided for valves that are operated frequently or for groups of valves arranged together. 13. The safety valve should be installed vertically and close to the equipment or pipeline being protected. If it is not possible to arrange it at a close distance, the total pressure from the protected equipment or pipeline to the safety valve inlet shall not exceed 3% of the set pressure value of the safety valve. 14 There should be a clear space of not less than 200 mm above the top of the control valve diaphragm head. When the control valve and the bypass are arranged vertically, they should be placed at staggered positions. 15 The installation location of the drain valve should not be higher than the drain point. 16 The installation location of the drain valve should be convenient for operation and maintenance. 17 SH3501 classifies pipes into 4 grades, namely: SHA, SHB, SHC, and SHD. 18 The pipeline layout drawing should preferably use A0 size; for simpler designs, A1 or A2 can also be used. Maps in the same area should use the same map scale. The size of the image should not be increased in length or width. 19 The title of the piping layout diagram is usually divided into two lines: “Piping Layout Diagram” is written on the upper line, while the ELXXX.XXX plane is written on the lower line. In the 20-pipe layout diagram, dimensions that are not drawn to scale should be marked with a horizontal line below them. 21 The piping layout drawing shall include direction indicators and a Keyplan showing the position of this drawing within the plant. 22 The pipe layout diagram should show the columns, beams, doors, windows, gutters, stairwells, and other elements specific to the civil engineering field. 23 When connecting to other specialized pipelines, the destination must be indicated and the connection should be shown with a double-dashed line; the plan showing these connections should specify COD 1705II-670/???-045, Sheet ?. The boundary area should be marked as B.L. The reflux opening of a 24-column tower is generally located on the pipe side above the tray; the internal structure of the reflux pipe and the position of its opening are related to the overflow pattern of the tray. 25 The vapor return port of the reboiler should be located on the center line of the tower and arranged parallel to the liquid receiver. :handshake :handshake

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