1. Manway Orientation as per Column Piping Design Guidelines
According to Column Piping guidelines, in which direction should manways face?
Explanation: Manways should face toward the access area, and all manways should have the same orientation if possible.
2. Stiffening Rings for Vacuum Service
Should stiffening rings be considered for vacuum service according to Column Piping guidelines?
Explanation: Stiffening rings should be considered for vacuum service according to Column Piping guidelines.
3. Nozzle Heights for 2-inch and 3-inch Nozzles
What are the standard heights for 2-inch and 3-inch nozzles above the bottom tangent line?
Explanation: Generally, 2-inch nozzles should be 6 inches above the bottom tangent line, and 3-inch nozzles should be 8 inches above the bottom tangent line.
4. Standard Dimension for Manway to Grating
What is the standard dimension from the centerline of the manway to the top of the grating?
Explanation: The standard dimension from the centerline of the manway to the top of the grating is 3’-0” (915 mm).
5. Bottom Manway Elevation
How far above the bottom tangent line should the bottom manway be according to Column Piping guidelines?
Explanation: The bottom manway should be 2’-6” (760 mm) above the bottom tangent line.
6. Level Bridle Orientation
According to Column Piping guidelines, how should the level bridle be oriented in relation to the reboiler return nozzle?
Explanation: The level bridle should not be oriented 180° from the reboiler return nozzle according to Column Piping guidelines.
7. Ladder Cages Requirement
According to Column Piping guidelines, at what height are ladder cages required for platforms?
Explanation: Ladder cages are required for platforms at 20 feet and above according to Column Piping guidelines.
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- Plant Design & Layouts-OISD 118
- Isometric Management
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