Conceptual Design, FEED, Detailed Design

Engineering Services

Velosi provides quality engineering services with our expertise of more than 600+ projects that we have handled. We help clients develop new energy assets, and rehabilitate existing energy assets by providing a wide range of customized engineering services such as Conceptual FEED designs, Fitness for services, Drafting services and a lot more. We provide the client with the optimum designs that are both cost effective and efficient at the same time.

Conceptual Design, FEED, Detailed Design

The Core requirement of any engineering project is its conceptual design or Feasibility Study. Boundaries are defined at this stage for further Front End Engineering Design (FEED). In FEED, main focus is on the technical requirement along with rough investment cost of the project. FEED also serves as the basis for the bidding of Execution phase contracts i.e EPC & EPCI.

Conceptual Design, FEED, Detailed Design and Engineering Consultancy Services are performed in compliance with standards ASME, API, BS, NFPA and other industrial codes and standards.


  • Process Flow Diagrams (PFDs), Utility
  • Flow Diagrams (UFDs) and Heat & Material Balances
  • Process Simulation Report Process
  • Design Calculations
  • Piping & Instrumentation Diagrams (P&ID’s)
  • Data Sheets
  • Cause & Effects Diagrams
  • Process & Operational Control Description
  • Flare and Relief System Study/Sizing
  • Calculations
  • Pre-commissioning and Commissioning
  • Manual
  • Operating & Maintenance Manual
Electrical Design
  • Area plans
  • Layout drawings
  • One line diagrams showing interlocks, inter tripping, system capacity, Voltage levels, currents, impedances, generation power levels etc.
  • Schematics
  • Equipment drawings with major tagged equipment such as Transformers, Switchgears, MCCs, UPS, Chargers, Generators, Power supplies, PTs, CTs, Control panels, packaged equipment etc.
  • Inter connection diagrams
  • Lists and Schedules
  • Calculations
  • Studies and reports
Civil and Structural Design
  • Civil Design Criteria
  • Structural Design Criteria
  • Civil Layouts
  • Underground Services Specification
  • Underground Services Layout
  • Underground Service Design Details
  • Drawings
  • Cable Trench Layouts
  • Paving Plan and Details Drawings
  • Foundation and Concrete Structure
  • RC Details
  • Road Layouts and Details
Instrumentation and Controls
  • System Block Diagrams
  • Instrument Specifications for equipment and materials
  • Instrument Index
  • Relief and Safety Device Index
  • Alarm and Trip Schedule
  • Control Room and Control Building Layouts
  • Instrument Cable Routing
  • Instrument Power and Utility
  • Requirements
  • Power Distribution Schedule
  • Instrument Junction Box Schedules
  • Loop Diagrams
  • Input/ Output Schedules
Piping Design
  • Overall Site Plot Plan
  • Piping Material Specifications
  • Heat Tracing/Jacketing Specification and Schedules
  • Piping General Arrangement Drawings
  • Isometric drawings
  • Material take-offs
  • Key Plans
  • Stress Analysis
  • Pipe Supports Design details
  • Special Pipe Support Register
  • Pipe Support Spring Register and Calculations
Fire Fighting and Safety
  • Safety Design Philosophy
  • P & ID for Fire Water Ring Main
  • Fire Fighting Equipment List / Requisitions
  • Fire and Gas Detection Equipment
  • Schedule
  • Extinguishing Systems Design (Where/if applicable) of fixed fire extinguishing systems (e.g. foam, carbon dioxide, clean agent, and/or dry powder systems)
  • Mobile Fire Fighting Equipment
  • Special Pipe Support Register
  • Schedule
  • Safety Equipment Schedule
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