Method for Writing Piping Design Documents

▣ Line Schedule

• The piping system processes involve connections of numerous lines and equipment.
• The fluids flowing through these lines are categorized into various types.
• Each fluid is assigned a number and listed.
• Details such as fluid type, temperature, pressure, insulation, thickness, and operating conditions are recorded.
• This serves as an important guideline for piping design.
• It is created before the piping design document. Since it marks the starting and ending points of the design, cooperation with the process design team is essential.

 

▣ Plot Plan

• A drawing that shows the layout of all necessary equipment and facilities for the process.
• Allows subsequent piping design work based on the plot plan.
• A comprehensive layout drawing of the entire unit.
• It is the beginning and the entirety of the plant process.
• A critical factor in determining the hierarchy of the entire plant process.
• A preliminary technical document that serves as the basis for piping design input.
• The decision on the plot plan requires careful attention and numerous considerations

 

 

▣ Routing Study

• A basic working document for creating piping diagrams, i.e., detailed design drawings.
• The main layout of piping is roughly entered into the P&ID.
• Drawn to scale based on the piping concept diagram.
• A basic drawing for detailed design 3D modeling.
• Manual creation is common, and it is not a formal submission drawing.

 

 

 

▣ Detailed Tasks of Routing Study

• Determination of the spin for the main rack, calculation of loading data.
• Route determination for buried piping and study of stormwater and drainage.
• Electric cable and instrument duct study.
• Battery limit and firefighting study.

 

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▣ Nozzle Orientation

• Layout drawings of nozzles and ladders for plant machinery and various equipment.
• A supplementary document prepared by the piping department and submitted to the machinery department.
• Generally, the elevation of nozzles cannot be arbitrarily adjusted.
• Only the angle of the nozzle is determined, with limitations on angle adjustments.