Engineering Deliverables for Chemical, Oil & Gas Projects

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 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 a Deliverable?

An engineering 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.

Deliverables Prepared by Different Departments

Process Engineering Deliverables

Major process engineering deliverables for any EPC project are:

• 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

Major mechanical engineering deliverables for oil and gas projects are

• 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

Some of the important instrumentation engineering deliverables are

• 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

Important electrical engineering deliverables for a project are

• 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

The HVAC team produces the following engineering deliverables for the project:

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

Civil and Structural Department

Common civil engineering deliverables for oil and gas projects are

• 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, Stairs, and Hand-railing
• Road Layouts

Fire Fighting and Safety Department

The fire fighting and safety department produces the following engineering deliverables

• 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

Major deliverables that piping engineers produce are

Piping Engineering Deliverables by Piping Layout or Piping Design Team

• 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
• Piping Isometrics
• Intermediate MTO
• Vessel Trim Drawing and MTO
• Vendor Drawing Review Report
• Final MTO
• Work Completion Tracking Report
• As-Built Drawing

Piping Engineering Deliverables by Piping Material Engineers

• 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

Piping Engineering Deliverables by Piping Stress Team

Major piping deliverables that piping stress engineers produce are

• Stress Critical Line List
• Stress Analysis Specification
• Stress Sketches
• Support Selection List
• CAESAR Analysis Report
• Support Drawing
• Support Span List
• Piping Expansion Loop Calculation and Layout
• Different Load Specification Sheets 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 racks, 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 the work breakdown structure (WBS).
• For match line and scope finalization.

Equipment Layout

• Piping Department: for preparation of GA key plan and piping layout.
• 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 the finalization of exact piping layouts, north/east coordinates 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 input to the vendor.
• Vendor: for equipment fabrication to weld nozzles to equipment.

As-built Drawing

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

Few more useful Resources for you..

Significance of HOLD in process piping engineering deliverable.
A SHORT OVERVIEW OF PROCESS ENGINEERING DELIVERABLES for EPC of Oil and Gas industries
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