Pressure Vessel Design Consultancy –  Services for Compressor Suction Drums

1. ASME Sec. VIII compliant mechanical design

2. Custom mist eliminator selection and design

3. Orientation and nozzle location optimization

4. Vessel support structure design

5. Thermal stress and pressure cycle analysis

6. Internals design – vanes, mesh pads, demisters

7. 3D modeling, fabrication drawing creation

8. Nozzle load analysis (per WRC-107/297)

9. FEA for wind and seismic loading

10. Lifting lug design for erection safety

11. Platform and manway access design

12. Design for inspection & maintenance access

13. Corrosion allowance and material selection

14. Fatigue analysis under transient loading

15. Shop & field hydrotest planning

16. Design validation with HAZOP/SIL inputs

17. Interface with compressor vendor requirements

18. Welding documentation, WPS/PQR assistance

19. Non-destructive testing (NDT) review support

20. In-service performance analysis & re-rating

 

 

 

 Compressor Suction Drum Design & Engineering Scope

📌 Piping Design

1. Suction inlet piping (from upstream separator or line)

2. Outlet piping to compressor inlet nozzle

3. Blowdown and vent piping

4. Drain line to slop system

5. Instrument tapping lines (pressure, level)

6. PSV discharge and flare header connections

7. High-pressure gas loop bypass lines

8. Interconnection with knockout and filter systems

📌 Civil & Foundation

1. Foundation for vertical/horizontal suction drum

2. Pipe support foundations

3. Dynamic analysis for compressor-vibration coupling

4. Foundations for associated exchangers or coolers

5. Cable trench layout for control and power lines

6. Earthwork and access platform for maintenance

📌 Pumps (If Applicable)

1. Drain pump for collected condensate

2. Seal flush system pump (for compressors)

3. Slop pump connected to drum’s bottom outlet

4. Service water pump for cleaning or flushing

📌 P&ID Elements

1. Gas inlet/outlet routing

2. Liquid level control loop

3. Drain, blowdown, and vent schematics

4. PSV and flare connection diagram

5. Interface with compressor interlock system

6. Local/remote instrumentation placement

7. Compressor trip logic tied to drum level

📌 Related Heat Exchangers

1. Suction scrubber gas cooler

2. Condensate cooler

3. Aftercooler (post-compression)

4. Intercoolers in multistage compression

5. Glycol or ammonia-based chiller units

6. Gas-to-gas heat exchangers for pre-cooling

📌 Instrumentation

1. Differential pressure indicators (for mist eliminators)

2. Liquid level transmitters (LIT, LSHH, LSH)

3. Pressure transmitters for drum and outlet

4. Temperature sensors for pre-cooled gas

5. Local control panel indicators (LL, HL, trip)

6. Flow indicators for vent or drain streams

📌 Related Day & Temporary Storage Tanks

1. Condensate collection tank

2. Slop tank (shared with other drums)

3. Degassing drum

4. Chemical injection buffer tank

5. Flash gas recovery tank

6. Fuel gas knockout drum

📌 Process Design Elements

1. Gas velocity & residence time calculations

2. Liquid hold-up time (as per API 12J/ASME)

3. Droplet separation efficiency (99% at 10 microns)

4. Mist eliminator sizing and specification

5. Surge and upset condition handling

6. Startup/shutdown transient evaluations

📌 Mechanical Design

1. Design pressure & temperature (per ASME VIII)

2. Orientation (vertical/horizontal) analysis

3. Mist eliminator internals design

4. Vessel supports (saddles, skirts, lugs)

5. Nozzle loads and FEA for flanged connections

6. Manway and access port design

7. Corrosion allowance and coating specification

8. Minimum metal thickness and stiffener rings

 Surge Tank Applications

1. Gas compressor suction buffer

2. Knockout drum before compressor

3. Blowdown surge vessel

4. Inter-stage compressor buffer

5. Flash drum in fuel gas system

6. Refrigerant accumulator

7. Flare knockout surge tank

8. Slop oil surge buffer

9. Pig receiver gas surge

10. Wet gas separator

11. Condensate surge tank

12. Chemical mixing surge buffer

13. Regeneration gas accumulator

14. HP/LP interface drum

15. Compressor recycle buffer

16. Start-up surge vessel

17. Vapour-liquid equilibrium surge tank

18. Gas recovery unit surge

19. Cold separator surge drum

20. Steam blow-off surge tank