3.9. Line identification list
A line identification list (line list) should include, but not be limited to, the following information:
1. Start point and end of line (connected to equipment or other lines)
2. Medium service
3. Phase of flow (liquid, vapor, etc.)
4. Pressure and temperature (design and operating)
5. P&ID and reference drawing
6. Line number
7. Piping specification code (line class)
8. Type of insulation
9. Pipe size
10. Corrosion allowance
11. Heat treatment
12. Branch reinforcement
13. Special information, if required
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