1. Clearance and Working Space while planning Piping for Shell and Tube Exchangers
Why is it essential to maintain clearance and working space around both ends while planning Piping for Shell and Tube Exchangers?
Explanation: Adequate clearance and working space around both ends of the heat exchanger facilitate maintenance activities by ensuring unobstructed removal of channel heads, shell covers, and tube bundles.
2. Piping Elevation
What is the recommended minimum clearance for elevating the piping from grade above the ground level?
Explanation: The recommended minimum clearance for elevating the piping from grade is 300mm above the ground level.
3. Channel Head Removal
How can channel head removal be simplified according to the provided information?
Explanation: Piping connected to channel head nozzles should be equipped with break flanges to simplify channel head removal.
4. Steam Line Arrangement
What is the recommended position for steam lines connecting to a header in the yard?
Explanation: Steam lines connecting to a header in the yard should be positioned on either side of the exchanger centerline without increasing pipe length.
5. Cooling-Water Line Arrangement
What is the recommended routing for underground cooling-water lines?
Explanation: For underground cooling-water lines, route them directly beneath the aligned channel nozzles of all coolers.
6. Valve and Instrument Accessibility
What should be considered when designing the piping arrangement around heat exchangers regarding valve handwheels?
Explanation: Valve handwheel and instrument accessibility should be considered by ensuring valve handwheels are accessible from grade and convenient accessways.
7. Accessways for Manifolds
How can accessways be utilized in the piping arrangement around heat exchangers?
Explanation: Accessways should be utilized for arranging manifolds, control valves, and instruments to ensure easy accessibility during maintenance.
Short Article on Piping for Shell and Tube Exchangers
Heat Exchanger Piping for Shell and Tube Exchangers
Clearance and Working Space
- Allocate adequate clearance and working space around both ends of the heat exchanger to facilitate maintenance activities.
- Maintain these working spaces clear of obstructions, such as piping and accessories, to ensure unobstructed removal of channel heads, shell covers, and tube bundles.
- Utilize the free space at the side of horizontal shells for placing control stations.
Piping Elevation
- Elevate the piping from grade to provide a minimum clearance of 300mm above the ground level.
Channel Head Removal
- Equip piping connected to channel head nozzles with break flanges to simplify channel head removal.
Steam Line Arrangement
- Position steam lines connecting to a header in the yard on either side of the exchanger centerline without increasing pipe length.
Cooling-Water Line Arrangement
- For underground cooling-water lines, route them directly beneath the aligned channel nozzles of all coolers.
Valve and Instrument Accessibility
- Consider valve handwheel and instrument accessibility when designing the piping arrangement around heat exchangers.
- Ensure that valve handwheels are accessible from grade and from a convenient accessway.
- Utilize these accessways for arranging manifolds, control valves, and instruments.
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- Complete Course on Piping Engineering
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- Piping Layout Engineering
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- Piping Material Specifications
- Valve Material Specifications
- Plant Design & Layouts-OISD 118
- Isometric Management
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