Engineering Solutions

Different delivery models to manage our Clients’ dynamics from traditional Time & Materials approaches to technological partnerships and Engineering Work Packages

Process & Process Safety Engineering

  • Feasibility & Debottlenecking Studies
  • Flow Assurance Studies
  • Process Design Basis
  • Heat & Material Balances (H&MB)
  • Process Schemes (PFDs, UFDs, P&IDs)
  • Process Equipment Sizing
  • Hydraulic Circuit Design & Analysis
  • Equipment & Instrumentation Datasheets
  • Equipment & Line List
  • Process Simulation (both Steady and Dynamic) & Optimization
  • Utilities & Offsites (U&O) Design and Troubleshooting
  • Utilities Consumptions & Effluent Summary
  • Process Control Philosophy
  • Commissioning, Start-up, O&M Procedures, O&M Manuals
  • ESD, Pressure-Relieving and Depressuring Systems Design
  • Loss Prevention Engineering (Active & Passive Fire Protection Design)
  • Reliability Engineering (RAM Study, FMECA, FTA, Sensitivity Analysis)
  • Human Factor Engineering
  • Hazard and Environmental Identification (HAZID & ENVID) Studies
  • Hazard and Operability (HAZOP) Analyses
  • Safety Integrity Level (SIL) Assessment
  • Layer of Protection Analysis (LOPA)
  • Quantitative Risk Assessment (QRA)

Civil & Structural Engineering

  • Elaboration of Material Requisitions (MRs)
  • Development of Civil MTO (Material Take Off) and Verification
  • Input to Scope of Work and Basis of Design
  • Reinforced Civil Concrete Works Design
  • Steel Structures Design
  • Finite Element Method (FEM) Structural Analysis
  • Auxiliary Steel Structures and Structural Calculation
  • Quality and Project Schedule Control
  • Geological and Topographical Surveys
  • Purchase Technical Specification for Engineering Activities
  • Purchase Technical Specification for Civil Works Execution
  • Quality Assurance Plan (QAP) and Inspection Test plan (ITP)
  • Check, Review and Approval of Civil Docs (i.e., shop drawings, detailed Bill Of Quantities – BOQ, packing list, etc.)
  • Troubleshooting Design in accordance with Industry Codes and Standards
  • Preparation of Technical Evaluations and Clarifications of Received Bids
  • Coordination and Management of Customers Requests (Input/Output)
  • Follow-up of Orders
  • Project Management & Permitting

Layout & Piping Engineering

  • Site Surveys
  • Laser Scanning, Existing Plants Recording
  • Layout Planning and 3D Modelling
  • Space Management, Clash Control
  • Piping Analysis, Calculations and Design
  • Piping Layout Optimization
  • Piping Class Specifications
  • Pipework Planning
  • Production of Isometrics (including Items Lists, Weld Seam Documentation, Batch Identification)
  • Line list, List of Tie-in Points
  • Lists for Piping, Fittings and Measuring Points
  • Material Entry (MTO: Material Take Off)
  • General Arrangement/Plot Plan Definition
  • Piping Stress Analysis and Supports Optimization
  • Complete Machinery Layout of Test Benches for Centrifugal Compressors, Turboexpanders and Gas Turbines for Power Generation
  • Calls for Tender for Assembly, Equipment, etc.

Mechanical Engineering – Static Equipment

  • Datasheets Elaboration and Design Calculations of Static Equipment (i.e., Columns, Pressure Vessels, Heat Exchangers, Filters, Air Coolers)
  • Preparation of Material Requisition (MR)
  • Technical Bid Evaluation (TBE)
  • Review and Approval of Vendor Drawings and Documentations
  • Issue of Tender Documents
  • Resolution of Performance Problems’ Root Cause – RCA Process
  • Fitness For Service (FFS) Assessment
  • With Regards to Pressure Vessels & Heat Exchangers (PVHE), we offer:
    • Thermodynamic Design
    • Mechanical Design by Finite Element Analysis (FEA)
    • Mechanical Design in compliance with ASME Codes
    • Steel Structure Static & Dynamic Design
    • 3D Modelling
    • Construction Drawings Elaboration
  • With Regards to Air Coolers, we offer:
    • Thermodynamic, Mechanical and Structural Design
    • Design, Selection and Purchase Specification of Auxiliary Items (Fan, Motor)
    • Design of Electrical & Pneumatic System
    • General Arrangement Drawings (GADs)
    • Construction & Assembly Drawings
    • 3D Modeling

Mechanical Engineering – Rotating Equipment

  • Mechanical Systems, Bill of Materials (BOM), Technical Selection, Sizing and Equipment Evaluation
  • Issue of Technical Docs for Factory Acceptance Test (FAT)
  • Equipment Drawings, P&IDs, and General Arrangement Drawings
  • Equipment Work Packages (EWPs)
  • Equipment Datasheets and Lists
  • Rotordynamics Analysis (Torsional, Lateral and Vibration Analysis)
  • Design and Purchase Specifications for all types of Rotating Equipment: Pumps, Compressors, Blowers, Steam & Gas Turbines, Assembly Tools
  • Reverse Engineering
  • Skid & Package Engineering (Main Components Selection, General Arrangement Definition, 3D Modelling, Stress Analysis, Foundations Calculation, Detailed Drawings for Frames, Piping & Supports)
  • Elaboration/Check of Technical Docs for Rotating Equipment Requisition and Machinery & Packages Deliverables: Design Criteria, Technical Specifications, Mechanical Data Sheets, Inspection Data Sheets, Material Requisitions (MR) and Technical Bid Evaluations (TBE)
  • Review of Vendor Documentation and Interaction with Suppliers for the Technical Issues (Vendor Follow-up)

Electrical & Instrumentation Engineering

  • Electrical & Instrumentation Design, Selection & Calibration
  • Elaboration and Analysis of P&IDs, I/O List, Instruments Data Sheets, Material List, Cable List
  • Cause & Effect (C&E) Charts
  • Wiring and Interconnecting Diagram, Functional Wiring Diagram, Single Line Diagram, Logic Diagram Development
  • Primary Electrical & Pneumatic Hook-Up Drawings
  • Planimetric Studies for the Positioning of Electro-instrumental Items and for Cable Routing
  • Calculations and Studies on the Electrical System (i.e., Selectivity, Short-Circuit Currents, Motor Starting)
  • Safety Integrity Level (SIL) Study, Design and Validation
  • Atmosfere Esplosive (ATEX) – Classification of Hazardous Areas (Zoning) and Equipment Selection
  • Design of MCC and DCP Panel
  • Panel, Control Room, Junction Box Layout Definition
  • Control System and Power Supply Schematic
  • Sizing, Selection and Routing of Low and Medium Voltage Cables
  • Analysis of Low and Medium Voltage Networks
  • Set-up of Electrical Protections
  • Production of specific MV/ LV Electric Motors and Technical alignment
  • Preparation of Purchase Requisitions and Offers Technical Evaluation
  • Production of Material Take-Off (MTO) and Technical Alignment

  • Conceptual Design & Optimisation​, Feasibility Studies, Techno-economic Analysis, FEED and Detail Design
  • Site Assessments: Geotechnical Investigation and Site Surveying
  • Site Construction Management and Commissioning Process
  • Installation, Construction, Inspection & Expediting of Wind Turbine Generators (WTGs) and Main Components
  • Wind Turbine Suitability Reviews & Life Cycle Analysis (LCA)
  • Preventive, Corrective Maintenance and Spare Parts Management
  • Manpower and Worldwide Technical Assistance
  • Assistance in Planning, Tendering, Bid Evaluation and Contract Award
  • Project Management & Control
  • PV Cells and PV Modules Technologies Assessments
  • Verification of Plant Output, Operational Performance Analysis
  • Fault Diagnosis Analysis & Troubleshooting
  • Operational Asset Management
  • Offshore Wind Energy Services

  • Project Planning, Scheduling and Control
  • Cost Estimation and Control
  • Project Engineering
  • Installation & Site Construction Supervision
  • Pre-Commissioning, Commissioning, Start-up Assistance
  • Field Engineering & Field HSE Supervision
  • Field Troubleshooting and Critical Equipment Assessment
  • Failures Evaluation and Root Cause Analysis (RCA) Process
  • Final Acceptance Test (FAT) Supervision
  • Inspection/Testing & Expediting (Post Order Activity)
  • Quality Control Activity (Welding, NDT Inspections, etc.)
  • Pre-shipment Inspection (PSI)
  • Purchasing Assistance, Logistics and Material Management Services
  • Operations & Maintenance Support and Strategy Development
  • Supply of Experienced Personnel for On/Offshore Plants Maintenance
  • Maintenance Engineering and Spare Parts Management
  • Complete Mechanical and Electro-instrumental Maintenance Services (Global Service)
  • Supervision during Assembling (Mechanical and Electro-instrumental)
  • Working Site Safety
  • O&M and Engineering Audits
  • Asset Life Assessment
  • Asset Integrity Management (AIM)

  • Global Recruitment Campaigns, including Coordination and Execution of all Recruitment Process Phases (Candidate Attraction and Advertising, Short Listing, Interview Coordination and Logistics)
  • Complete Process of Research and Selection of Technical, Middle and Top Management Profiles
  • Training Model Design, Planning, Coordination & Implementation (Classroom Training, On-the-Job Training – OJT, Virtual Reality – VR)
  • Blended Training Tools Design
  • Training Needs Analysis (TNA)
  • Competency Assessment & Skills Gap Analysis
  • Competency Based Training (CBT) Model: Competency Mapping, Design of Individual Competence Development Paths
  • Customised Managerial Training Packages
  • Coaching, Mentoring and Tutoring
  • Local Content Development
  • Elaboration of Customised Training Material
  • Training Courses on Upstream, Midstream, Downstream & Renewable Energies Areas
  • Training of Trainers (ToT)

Future Challenges

The world faces a major challenge: decarbonizing the global economy. Over the past 150 years, global consumption of coal, oil and gas boomed as it fueled the world’s growing business activity. This success carried a price tag, however, in the form of large amounts of greenhouse gas emissions that increased average global temperatures by 1 degree Celsius in the last century.

In the coming decades, the world faces a complex challenge – continue to grow economically while simultaneously reducing CO2 emissions.

PES Engineering is ready to support companies in the sector towards the challenges of the future.

Delivery models – Our business approaches

Engineering Work Packages

Delivery of a product or a service.


  • Guarantee of committed results.
  • Different skills and different expertise working in synergy in Multidisciplinary projects.
  • PES as a single point of responsibility for a whole engineering package.


  • Our team support you on your
    work-packages and tailored turnkey solutions.
  • Full PES accountability.
  • Integrated project team.
  • Delivery milestones management.

Experts on Demand

Specific skills integrated into Client’s Project Team


  • Reactivity and flexibility.
  • Client assistance by particular and specific expertise.
  • Build of project teams that match specific assignments.
  • Resources can be scaled up or down according to current needs.


  • Our experts support you on location, facilitating the delivery process
  • Client retains full project control
  • Fill knowledge gaps

Global Work Packages

Delivery of a product/service with the involvement of our partners.


  • Guarantee of committed results
  • Different skills and different expertise working in synergy.
  • High flexibility for highly customizable solutions.
  • PES as a single point of responsibility for a whole engineering package.


  • Our team support you on your work-packages and tailored turnkey solutions.
  • Full PES accountability.
  • Integrated project team.
  • Delivery milestones management.