Detail Engineering Design (DED) Support Service
Detail Engineering Design (DED)
Detailed Engineering Design (DED) is an engineering stage that produces complete and detailed technical documents so that a facility, factory, building, or infrastructure can be constructed, manufactured, installed, tested, and operated in accordance with the project's technical, safety, quality, cost, and schedule requirements.
At this stage, all concepts and basic designs (Conceptual Design and FEED) are translated into working drawings (Issued for Construction/IFC), technical specifications, engineering calculations, bill of materials, and procurement documents ready for use by contractors and vendors.
Purpose of Detailed Engineering Design
The main objectives of DED include:
- Producing a constructible design.
- Reducing the risk of design changes during construction.
- Ensuring compliance with codes, standards, and regulations.
- Serving as a basis for material and equipment procurement.
- Supporting more accurate cost estimates.
- Simplifying the construction, commissioning, and operation processes.
Scope of Detailed Engineering Design
The DED involves all engineering disciplines working in an integrated manner.
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1. Process Engineering Outputs include: * Process Flow Diagram (PFD) |
4. Civil Engineering Includes: * Site Development Deliverables: * Civil General Arrangements |
7. Instrumentation & Control Engineering Includes: * Instrument Index |
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2. Mechanical Engineering The scope of work includes: * Equipment Specification Outputs: * Mechanical Drawings |
5. Structural Engineering Main output: * Steel Structure Design |
8. Safety Engineering Work: * Fire Fighting System
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3. Piping Engineering This is one of the largest tasks in the DED stage. Deliverables: * Plot Plan |
6. Electrical Engineering Scope of work: * Single Line Diagrams Deliverables: * Electrical Layout |
9. Telecom & ICT Engineering If needed: * CCTV |
DED Main Deliverables
The resulting documents usually include:
Engineering Documents
* Base Design
* Engineering Calculations
* Technical Specifications
* Design Reports
* Material Specifications
Engineering Drawings
* General Arrangement (GA)
* Plot Plan
* Equipment Layout
* Foundation Drawing
* Structural Drawing
* Piping Layout
* Isometric Piping
* Electrical Layout
* Instrument Layout
* Hook-up Drawing
* Cable Routing
* Underground Drawing
Procurement Documents
* Material Requisition (MR)
* Technical Bid Evaluation (TBE)
* Vendor Data Requirements
* Material Take-Off (MTO)
* Bill of Quantities (BOQ)
Vendor Documents
* Vendor Drawing Review
* Vendor Data Review
* Vendor Print Approval
Construction Documents
* Issued for Construction (IFC) Drawings
* Construction Work Package
* Installation Detail
* Erection Procedure
* Construction Specification
DED Implementation Stages
1. Review of Conceptual Design and FEED documents.
2. Collect field and technical data.
3. Prepare the design basis.
4. Engineering calculations for each discipline.
5. Develop a 3D model.
6. Create detailed drawings.
7. Interdisciplinary Check.
8. Design review and verification.
9. Client approval.