Documents Required for Column Designing
The basic below mention documents shall be studied thoroughly for conceptual arrangement of piping around a column.
The basic layout and general engineering specifications
- The minimum access, walkways, platforms width and headroom requirements.
- Handling facilities for tower internals, manhole covers, line blinds, relief valves.
- Maximum rise of ladders.
- Pipe-system requirements, such as open or closed relieving systems.
- Minimum line-size and required hose-stations.
- Access to valves and instruments.
Design Standards
- Details of ladder dimensions
- Ladder and platform position (Step through or side step landings)
- Toe-plate, handrail and safety-gate details.
P&ID and Technical specification of column
- Process data showing interconnected equipment and piping.
- Pipe sizes and pipeline components.
- Steam tracing and insulation thickness.
- Tower elevations and differences in related equipment levels.
Plot Plan
- The physical location of a column and its relationship to other equipment.
- Main access.
- Main pipe run or pipe rack.
- Location of pumps.
- A typical cross-section of a piperack running through the tower area of a refinery type plant
- A typical plan of equipments located in the refinery type of plants highlighting the maintenance access.
Instrument standard
- The location of instrument connections to tower for gauges, level controllers and level alarms.
- Location of pressure and temperature connections without orientation.
- The instrumentation systems around the tower are depicted in the P&ID.
Fabrication drawing / detail dimensional drawings of column
- Diameter and height of column.
- Details and dimensions of internals.
- Manhole
- Process-piping connections in elevation (without orientation)
- Drum, pump, exchanger drawings giving details of adjacent process equipment or equipment supported on column itself.
- An integrated piping study should be developed from the above information.
- The piping study should take care of all the general recommendations of piping arrangement around the column and its related equipment and facilities
Check here for process column