QC Notes Level-19

Parts of pressure vessel and Types

We will learn classification or types of pressure vessel according to their fabrication, function, material, geometry, pressure, heating methods, orientation, installation and wall thickness of pressure Vessels.

A pressure vessel consists of four key parts: the shell, heads or end closures, nozzles, and support structures. The shell serves as the primary component, containing the pressure, while the heads seal the vessel. Nozzles provide entry and exit points for fluids, and support structures ensure stability.

PARTS OF PRESSURE VESSEL

1. Head
2. Shell
3. Nozzle
4. Support

TYPES OF VESSEL SUPPORTS

1. Lug Support
2. Leg Support
3. Saddle Support
4. Skirt Support

TYPES OF VESSEL INTERNAL

1. Tray
2. Inlet Distributor
3. Anti-Vortex Baffle
4. Catalyst Bed Grid & Support Beam
5. Outlet Collector
6. Flow Distribution Grid
7. Cyclone and Plenum Chamber System
8. Demister

Vessels Parts:

In Pressure Vessel following are the general vessel parts:

1. Vessel Body
   A. Cylindrical Shell
   B. Spherical Shell
2. Vessel Heads
   A. Flatheads
   B. Tori spherical heads
   C. Elliptical heads
   D. Hemispherical heads
3. Vessel Supports
   A. Leg supports
   B. Saddle Supports
   C. Lug Supports
   D. Skirt Supports
   E. Ring Supports
4. Nozzles and Manholes
   A. Process Nozzles
   B. Inspection Nozzles
   C. Instruments Connections
   D. Pad Type Nozzles
   E. Sight/Light Glasses
   F. Vent Nozzles
   G. Drain Nozzles
   H. Cylindrical Manways
   I. Elliptical Manways
5. Flanges
   A. Slip-on Flanges
   B. Weld Neck Flanges
   C. Screwed Flanges
   D. Lap Joint Flanges
   E. Blind Flanges
   F. Socket Weld flanges
   G. Plate Flanges
   H. Reducing Flanges
   I. Pad Flanges
   J. Tongue and groove Flanges
6. Gaskets
   A. Ring Type Gaskets
   B. Spiral Wound Gaskets
   C. Metal Jacketed Gaskets
   D. Elastomeric Gaskets
   E. Corrugated Gaskets
7. Internals
   A. Trays
   B. Piping Distributors
   C. Baffles
   D. Demisters
   E. Packing
   F. Liquid Distributors
   G. Vortex breakers
   H. Bed Supports
   I. Coils

This all above are common vessels parts used pressure vessel fabrication.

Continue QC Notes Level-20 ⭕ ASME – Boiler and Pressure Vessel Code

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