Litwin PEL Capabilities

Litwin PEL Engineering has a successful track record completing both Onshore and Offshore oil and Gas Projects for Onshore Fields, Gas Processing Plants, Gas Gathering Stations, Pumping Stations, Petrochemical Plants, Refineries, Wellhead Platforms, Process Platforms, MOPUs, FPSO, Subsea pipelines, Topside Modification etc.
We have the successful track record delivering complex projects, working in various geographies like Brazil, USA, Azerbaijan, Turkmenistan, Iran, Kuwait, Saudi Arabia, Nigeria, Malaysia, Singapore, India etc. We have executed many projects from FEED to Detail Engineering i.e complete engineering projects in EPCIC scenario.

We are also prequalified with various E&P companies to carry out Detail Engineering works.

Our capabilities in various disciplines are as follows.


Process Engineering


Mechanical Engineering


Electrical Engineering


Instrument & Telecom Engineering


Piping Engineering


Structural Engineering

Process Engineering

Our Process engineers at Litwin PEL are from reputed institutions, experienced from leading EPC and engineering consulting firms and are well trained to deliver quality engineering services.

The process calculations prepared are based on standard design and engineering practices followed by world’s Oil and Gas majors.

Process Engineering Deliverables are as follows.

  1. Process Design Philosophy and Design Basis
  2. Process Simulation Report
  3. PFDs
  4. P&IDs
  5. Heat & Mass balance (HMBT)
  6. Equipment Sizing and Hydraulic Analysis
  7. Utility consumption schedule
  8. Process description
  9. Line list
  10. Line hydraulics and Sizing
  11. Control Valve Sizing Calculation
  12. PSV Sizing Calculation
  13. BDV Calculation
  14. Flare Design Calculation and Radiation Study
  15. Corrosion Mitigation and Material selection Study
  16. RO Sizing Calculation
  17. Operation and Maintenance Manual

Hysys simulation is carried out to generate PFD and Heat Mass Balance Tables (HMBT). Then the P&IDs are generated and sent to other disciplines for review and Inter Disciplinary Check (IDC). PMT team controls the IDC and change control procedures and this ensures a coordinated Engineering effort across disciplines.

Mechanical Engineering

Our Mechanical engineers are well experienced in the Static, Rotating Equipments and Special Packages. We have the experience and expertise in preparation of specifications and Datasheets for various equipments used in the Upstream and Downstream Industry, Generate RFQs and review the technical bids supplied by vendors etc. We are well versed with various International codes like ASME, BS, TEMA etc.

Datasheets prepared are based on the standard formats, meeting the requirements of international standards and client specific standards. Mechanical design of pressure vessels is done using PV-Elite software.

Mechanical Engineering Deliverables are as follows.

  1. Mechanical Specifications and Philosophy
  2. Equipment Datasheets (Static & Rotary)
  3. Equipment List
  4. Pipe stress analysis
  5. Mechanical design of pressure vessels
  6. Manual valve summary
  7. Procurement assistance
  8. Material Handling Study
  9. RFQs, Purchase Specification
  10. Technical Bid Evaluation

Electrical Engineering

Electrical Discipline is capable of executing end-to-end Electrical Design Engineering for Upstream and Downstream facilities etc.

Electrical Engineering Deliverables are as follows.

  1. Electrical Specifications and Philosophy
  2. Load analysis
  3. Single Line Diagram
  4. Calculations such coordination settings, cable sizing, short circuit calc, bus bar sizing, earth fault, etc.
  5. Solar Panel Sizing
  6. Switch gears design (both HV and LV) including conventional and smart
  7. Datasheets for electrical Items
  8. Electrical Load List
  9. Lighting Junction Box Schedule
  10. Cable, Earthing and Lighting Layouts
  11. Lighting wiring diagram
  12. Lighting cable schedule
  13. Cathodic Protection
  14. RFQs, Purchase Specification
  15. Technical Bid Evaluation
  16. Procurement Assistance

Instrument & Telecom Engineering

Instrumentation and Telecom Discipline is well experienced in preparation of specifications and Datasheets for various Instrumentation Packages used in the Upstream and Downstream Industry, Generate RFQs and review the technical bids supplied by vendors etc.

Instrumentation & Telecom Engineering Deliverables are as follows.

  1. Instrument Specifications and Philosophy
  2. DCS, SSDS, FGS specification and design
  3. Instrument Index
  4. Instrument Datasheets
  5. Instrument Hook‐up and loop drawings
  6. Instrument set‐point schedule
  7. Instrument Hard wired I/O schedule
  8. Junction Box schedule
  9. Junction Box wiring diagram
  10. DCS/IPS Termination diagram
  11. Process control philosophy
  12. Cable Schedule
  13. Instrument Block Diagram
  14. Hazardous Area Classification Drawings
  15. Sizing of CV, PSV, ORIFICES etc.
  16. Telecom design
  17. Telecom Overall configuration, etc.
  18. Others such layouts, loop diagrams, etc.
  19. Procurement assistance

Piping Engineering

Based on the Piping and Instrument diagrams and Equipment Lists, Layouts are prepared by the specialist Layout and Safety Team. All disciplines are consulted during the layout preparation. The layouts are sent for Inter Discipline Checks and review meetings are conducted by the PMT along with all disciplines. PMT team controls the IDC and change control procedures and this ensures a coordinated Engineering effort across disciplines. The layouts are passed on to the all disciplines for further engineering.

All the piping work carried out is modeled in 3D modeling software like PDS / PDMS. Structural Input from STAAD PRO, SACS, is imported into PDS / PDMS on a regular weekly basis. In some cases this is done on a need to need basis. However all changes are recorded and logged by the PDS/ PDMS administrator.  3D Model reviews are carried out by all disciplines on a regular basis and any change is controlled and monitored / by authorized PMT.

Pipe supports, Electrical and Instruments cable tray routing, E&I supports etc. are modeled and input in PMDS. Stress analysis is carried out using CAESAR software. Vendor data is used to model the major equipments and vessels including the Tie-in points and Nozzle orientations. 3D model is checked for clashes and clashes if any are resolved on a regular basis.

  1. Piping Design Basis
  2. Equipment layout / Plot Plan Development
  3. Piping General Arrangement Drawings
  4. Equipment Nozzle Orientation Plan
  5. 3D Modeling
  6. Piping isometrics
  7. Piping plan and elevation drawings
  8. Pipe support details
  9. Piping Bill of Materials
  10. Stress Analysis

We have well qualified Pipeline engineers, specialized in subsea and Onshore PIPELINE design. Our PIPELINE engineers are capable of performing simulation, stability analysis, using PIPESIM, PlusOne Software, DNV spreadsheets and other in-house spreadsheets and software.

  1. Pipeline Sizing
  2. Pipeline Material Selection
  3. Pipeline Mechanical Design
  4. Pipeline Stability
  5. Pipeline Span Analysis
  6. Pipeline Crossings
  7. Pipeline Protection Design
  8. Pipeline CP System Design
  9. Design for Pipeline Installation
    • Mechanical Design
    • Span Evaluation
    • Flange Design
    • Detailed Stress Analysis
    • Riser Clamp Design
    • Riser Installation Engineering
    • Riser Protection Design
    • Shore Pull Analysis
    • Winch Foundation Design
    • Field Layouts
    • Alignment Drawings
    • Riser Drawings
    • Tie in Drawings
    • Clamp Drawings
    • Line Pipes & LR Bends
    • Anti Corrosion Coating
    • Concrete Weight Coating
    • Cathodic Protection System
    • Insulating Joints and Flanges
    • Flow Tees
    • Emergency Pipeline Repair Systems
    • Pipeline Wall Thickness Report
    • Flow Simulation Report
    • Pipeline Expansion Analysis Report
    • Pipeline Stability Report
    • Pipeline Span Analysis Report
    • Pipeline Route Selection Report
    • Pipeline Crossing Design Report
    • Riser Design Report
    • I/J Tube Design Report
    • Riser / I/J Tube Clamp Design Report
    • Pipeline Alignment drawing
    • Pipeline Approach and Departure drawing
    • Riser / I-Tube location drawing
    • Riser / I-Tube Assembly drawing
    • Field Layouts
    • Clamp Typical drawings
    • Anode Arrangement drawings (Risers / Pipelines)
    • Pipeline Crossing drawings

Structural Engineering

Structural Engineering analysis is carried out using STAAD PRO / SACS. STAAD PRO SACS model is used as a basis for all structural Engineering outputs. GRL WEAP is used to carry out Pile and Conductor drivability analysis.

  1. Structural Specifications and Philosophy
  2. In place Analysis
  3. Fatigue Analysis
  4. Seismic Analysis
  5. Lift Analysis
  6. Load out and Transportation Analysis
  7. Pile Drivability Analysis
  8. Conductor Drivability Analysis
  9. Mud-mat Design
  10. Structural Drawings
  11. Weight Control Report
  12. Material Requisition
  13. Architectural
  14. Procurement Assistance