Piping Drawing Review Process

The review of piping drawings should be conducted using printed copies or check plots, with colored pencils or pens for clarity. The following guidelines apply:

• Yellow: Highlights corrected areas and dimensions.
• Green: Marks areas and dimensions to be removed.
• Red: Indicates areas to be corrected or added on the drawing.
• After corrections are made, the new print is reviewed again ("back checked") to ensure the changes have been properly incorporated.

Key Aspects to Review in Piping Drawings:

1. Drawing Title: Ensure the title is correct and complete.
2. Orientation: Verify the north arrow is aligned with the plot plan.
3. Graphic Scale: Confirm inclusion, especially if the drawing will be scaled down.
4. Equipment Coordinates: Check against the equipment layout for accuracy.
5. Equipment Numbers: Confirm they are displayed correctly on the piping drawing.
6. Line Identification: Ensure all lines are correctly labeled in all views.
7. Line Specification Changes: Check if changes in line specifications are properly indicated.
8. Reference Drawings: Confirm all reference drawing numbers and files are correct.
9. Dimensions: Verify the correctness of all dimensions shown.
10. Symbol Accuracy: Ensure that symbols match standard representation guidelines.
11. Instrument Identification: Check all instruments are correctly labeled.
12. Straight Length Requirements: Verify required upstream/downstream straight lengths.
13. Insulation Needs: Confirm insulation specifications as per P&IDs.
14. Piping Arrangement: Ensure it meets the P&ID requirements, such as gravity flow and seals.
15. Interference Check: Look for potential interferences in the piping design.
16. Scale Accuracy: Confirm scale accuracy, especially in general arrangement drawings.
17. Stress Analysis Compliance: Ensure all stress analysis requirements are satisfied.
18. Clearances: Check for sufficient clearance from civil structures, electrical systems, and instrument consoles.
19. Openings: Confirm the adequacy of floor and wall openings.
20. Accessibility: Ensure operational and maintenance spaces are accessible, with space for drop-out areas and handling.
21. Foundation and Vendor Requirements: Confirm the foundation drawings and vendor specifications are incorporated.
22. Sections and Details: Ensure section identifiers and details match.
23. Match lines: Verify accuracy of match line locations.
24. Signatures and Dates: Ensure drawings are signed and dated.
25. BOM Accuracy: Confirm the Bill of Materials (BOM) in isometric drawings is correct.
26. Revision Number: Check the number of issues and revisions is up to date.

This process ensures a comprehensive and accurate review of piping drawings, adhering to standards and project requirements.