Engineering Deliverable for Chemical, Oil & Gas Projects (With PDF)

For the completion of any Engineering Project, It is very important to exchange information among the different Engineering Disciplines for starting the work simultaneously. The documents or objects used for exchanging the information to help progress the project is called deliverables. This article will provide a list of common deliverables from various disciplines of an oil and gas project.

What is Deliverable?

A deliverable is a document that is prepared by one department and used by another department for the execution of a project. Some deliverables are dependent on other deliverables, so for preparation of dependent deliverables first needs to complete the interconnected deliverables.

Co-ordination between departments
Co-ordination between departments

Deliverables Prepared by Different Department

Process Engineering Deliverables

  • Process Flow Diagrams (PFD), Process Flow Scheme (PFS)
  • Piping & Instrument Diagrams (P&ID)
  • Line List
  • Equipment List
  • Process Design Calculations
  • Process & Operational Control Description
  • Process Data Sheets for Instrumentation
  • Process Data Sheets for main Equipment
  • Performance Test Procedure

Static Equipment Department

  • Mechanical Data Sheet (MDS)
  • Equipment Installation Plan
  • Equipment fabrication Drawing
  • Vendor Drawing for Review

Rotating and Package Equipment Department

  • Mechanical Data Sheet (MDS)
  • Equipment Specification List
  • Vendor Drawing with Detail

Deliverables from Instrumentation Department

  • Instrument Data Sheet
  • Instrument Hook-up
  • System Block Diagrams
  • Control Room and Control Building Layouts
  • Instrument Location Drawings
  • Instrument Cable Routing
  • Instrument Power and Utility Requirements
  • Instrument Index
  • Relief and Safety Device Index
  • Alarm and Trip Schedule
  • Data Transfer Cable Tray Layouts
  • Air Distribution Diagram
  • Instrument Junction Boxes and Panels Block Diagrams

Electrical Department

  • Grounding layouts
  • Cable Tray Route Layouts
  • Plant and Buildings Lighting Layouts
  • Substation Sizing and Layout
  • Wiring Drawings and Terminal Connections
  • Electrical Equipment and Component Data Sheet
  • Heat Tracing Panel Schedules
  • Load List
  • Tray Sizing
  • Emergency Power Load Specification

HVAC Department

  • Air Handling Unit (AHU) Layout
  • Duct Layout
  • Cooling/Chilled Water Piping Layout

Civil and Structural Department

  • Foundation and Structural Layouts
  • Reinforced Concrete Specification
  • Steel-work Specification
  • Foundation Settlement Data
  • Procedures for Earthworks like Excavation and Leveling
  • Floor or Wall cut-out section Layout
  • Drawing of Platform, Ladders, Stair and Hand-railing
  • Road Layouts

Fire Fighting and Safety Department

  • Hazards Study Report
  • Layout Approval Report
  • P & ID for Fire Water Piping
  • Fire Fighting Equipment Layout
  • Water Storage Tank Data Sheet
  • Operating Manuals for Fire Fighting Equipment
  • Extinguishing System Design

Deliverables of Piping Department


  • Overall Site Plot Plan
  • Area Mark-up
  • Unit Plot Plan
  • Zero-Level MTO (Material Take-off)
  • Equipment Layout
  • General Arrangement (GA) Key Plan
  • Piping Layout (GAD)
  • Piping Study
  • Pipe Support Layout
  • Nozzle Orientation Drawing
  • Pipe Rack Layout
  • 3D Model
  • Construction Isometric
  • Intermediate MTO
  • Vessel Trim Drawing and MTO
  • Vendor Drawing Review Report
  • Final MTO
  • Work Completion Tracking Report
  • As-Built Drawing


  • Materials Selection Data
  • Pipe Thickness Calculation
  • Miter Bend and Reinforcement (RF) Pad Calculation
  • Pressure & Temperature (PT) Rating Table
  • Piping Material Specification (PMS)
  • Valve Data Sheet (VDS)
  • Special Parts Data Sheet
  • Vendor Drawing Review Report
  • Corrosion Study Report
  • Material Testing Report
  • Pressure Test Procedure


  • Stress Critical Line List
  • Stress Analysis Specification
  • Stress Sketches
  • Support Selection List
  • CAESAR Analysis Report
  • Support Drawing
  • Support Span List
  • Piping Loop Calculation and Layout
  • Different Load Specification Sheet of Supports
  • Final Stress Report

Deliverables or Information Provided by Client

  • Product Concept
  • Operating Guidelines
  • Codes and Standards as per Location
  • Statutory Requirement Details
  • Metro-logical Data

Users and Uses of Piping Deliverables

Overall Plot Plan

  • Used by all the departments including clients.
  • For the Finalization of pipe rack, trenches, and underground facilities (Pipes/Cables).

Zero-Level MTO

  • Used by the procurement department.
  • For estimation of cost and bidding.

Intermediate MTO

  • Used by the procurement department.
  • For ordering purposes.

Final MTO

  • Used by the procurement department.
  • For review purposes.

Unit Plot Plan

  • Used by all departments.
  • For finalizing work break-down structure (WBS).
  • For match line and scope finalization.

Equipment Layout

  • Piping Department: for preparation of GA key plan and piping lay out.
  • Civil Department: for equipment foundation location & building layout for designing of foundation/building.
  • Electrical Department: for electrical cable/junction box layouts.
  • Instrument Department: for data transfer cable layouts.
  • Equipment Department: for preparation of installation plan.

GA Key Plan

  • Used by the piping department.
  • For finalization of exact piping layouts, north/east co-ordinates of match lines which are required for continuation.

Piping Layouts

  • Piping Department: for preparation of intermediate MTO, construction isometrics, nozzle orientation, and pipe support layout.
  • Civil Department: for knowing piping cut-offs.
  • Electrical Department: for the development of cable layouts of instruments that are mounted on pipes.
  • Instrument Department: for the development of cable layouts of instruments that are mounted on pipes.

Nozzle Orientation

  • Mechanical Department: for updating MDS (Mechanical Data Sheet) as an input to the vendor.
  • Vendor: for equipment fabrication to weld nozzles to equipment.

As-built Drawing

  • Used by the client.
  • For record purpose, future review, and modification.

Few more useful Resources for you..

Significance of HOLD in process piping engineering deliverable.
Basics of Piping Design and Layout
Piping Stress Analysis Basics
Mechanical Design Basics
Process Engineering Design Basics
Instrumentation Basics
Pipeline Basics
Civil Engineering Basics
Piping Materials Basics

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Rehan Ahmad Khan

I am a graduate in Mechanical Engineering and have worked in automotive aftermarket industry as a Service Engineer before. But there was a spark in me to do creative work which led me to explore opportunities in design world. So, i left my previous job where I had great experience, and decided to enter the energy industry. Later on, enrolled for the “Post Graduation Diploma in Piping Engineering” and through which I got the skills that were required to meet the gap between the industry and my technical skills. I am still exploring this industry and having a great experience. In the process felt to share my knowledge with the other Piping Engineers and as a result, I am here with you.

9 thoughts on “Engineering Deliverable for Chemical, Oil & Gas Projects (With PDF)

  1. Can you also show the sequence of these drawing releases . The inputs required for each drawing preparation .

      1. AOA Rehan Khan
        Please share the sequence of engineering deliverable and sequence of the drawings release in Oil and Gas industry.

        Many thanks
        Shazia Maqbool

  2. Thank you very much! this was such a great read!
    I have been using drones mainly for structural and renwable energy asset inspections using drones.

    The data poins we provide are obtained using RGB and calibrated Radiometric cameras. To name a few of our Standard deliverables among others
    1) heat spike readings
    2) visual anamolies like cracks and soiling
    3) topography maps that can be over laid over as built maps with sub centimeter level accuracy

    I would really like to enter the O&G industry and provide solutions that help speed up the traditional deep dive intensive O&M methods for Oil and Gas.

    Can you be so kind and provide some of your inputs from your article above that can help me isolate and identify the areas where i can contribute increasing safety and saving tons of time?

    I really look forward to hearing from you

    Many thanks and best regards

  3. Respected sir,
    I am student.
    I read your article on pressure vessel it is very helpful to know more about pressure vessel designing.
    Sir I have doubt, how pressure vessel can be design with different weld efficiency (1, 0.85, 0.7) in Pvelite, Proe, Creo design software?.
    Can be pressure vessel design with different weld efficiency?

    or we design a single pressure vessel and analysis with different welding efficiency(1,0.85, 0.7) on ansys.

    or we design 3 different pressure vessel with different welding efficiency and analyse of 3 different design using ansys.

    Please sir clear my doubt I am doing project on pressure vessel and its analysis on welded joint.

  4. Hi, interested in any oportunitie to work in USA.
    I am Engineer and I have extensive expierence in Oil & Gas Treatment plants, Production Facilities and Safety and Environment.

  5. Hello, please if possible could you indicate the ISO/API and other requirements to the engineering scope of the procurement engineering docs (data sheets, specifications, technical requisitions). Thanks.

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