Detailed Design Services Limited

Services

Feed Studies

Supporting Front End Engineering Design by delivering robust engineering deliverables that underpin safe, cost-effective, and schedule-driven project execution.

Site Survey

Whether your project requires cable routing, instrument location layouts, structural measurements, precision measurement, or a site overview ahead of design, we provide site survey services tailored to your requirements.

Detailed Design

With over 35 years of experience, Detailed Design Services delivers exceptional 2D and 3D design expertise across a broad range of disciplines within the oil and gas energy sector, from complex brownfield modifications to topside and subsea design solutions.

As-building

Following construction execution, the production of as-built engineering deliverables is a critical step in achieving project close-out. We support clients by incorporating red-line mark-ups from construction work packs to ensure accurate and fully updated documentation.

Whether you're a multinational organisation driving a major project towards its next milestone, or a fabrication company seeking a bespoke design solution, Detailed Design Services delivers expert support tailored to your ambitions.

With strong in-house capabilities and the latest CAD technology, we deliver both 2D and 3D design solutions to a high professional standard. Using AutoCAD for precise 2D drafting and Autodesk Inventor for advanced 3D design and development, we support projects from initial concept through to detailed design. We also offer rapid prototyping through our in-house 3D printing facilities, helping bring ideas to life quickly and efficiently.

We also work seamlessly within our clients' systems via secure VPN access, allowing us to integrate directly with their databases and software to deliver efficient, flexible support wherever it's needed.

Detailed Design Services will provide design solutions in accordance with client standards, the Basis of Design, and applicable industry standards.

We always comply with client document issuing procedures, typically issuing a first-pass "Issue for Client Review" followed by "Issued for Construction", providing assurance that all parties have the opportunity to comment and supporting a "right first time" ethos.

Other software we use, where project requirements extend beyond AutoCAD and Inventor, includes:

Microstation

Solid Works

Navisworks

SmartPlant Instrumentation

🔵 Brownfield Design

We specialise in brownfield projects across a wide range of scopes, from onshore facilities such as the gas terminals at Bacton, Dimlington and Easington, and National Gas compression stations at Diss and Kirriemuir, to power plants in Great Yarmouth and Thetford.

We have delivered EC&I design solutions for gas platforms over many years, supporting multiple clients across the full spectrum of Management of Change scopes. Deliverables typically include, but are not limited to:

Electrical Cable Block Diagram
Electrical Single Line Diagrams
Electrical Cable Routing Diagrams
Electrical Cable Schedules
Electrical Schematic/Interconnect Diagrams
Junction Box Termination Diagrams
Panel Termination Diagrams
Electrical Location/Earthing Layouts

Instrument Cable Block Diagram
Instrument Cable Routing Diagrams
Instrument Cable Schedules
Process/Hydraulic Hook-ups
Tube Routing Layouts
Junction Box Termination Diagrams
Panel Termination Diagrams
Instrument Location Layouts
Instrument Loop Diagram

🟤 Topside Design

Depending on individual client needs, we can design our topside units to DNV 2.7-1 or BS12079.

We design stainless steel enclosures to IP65 protection standards, together with open-frame carbon steel structures, engineered to meet specified mechanical, environmental, and functional requirements.

Comprehensive drawing packages can be provided, covering all stages from schematic diagrams through to fabrication drawings.

Our service can, where required, include technical liaison with fabrication and machine shops to maintain continuity of communication throughout the manufacturing process and support delivery to project schedule.

Single Well Control Panels
Wellhead Control Panels
Hydraulic Power Unit
Accumulator Module
Topside Umbilical Termination Units
Chemical / Methanol Injection Skids
Test / Flushing Rigs

🔴 Subsea Design

With over 35 years of experience in subsea control systems, we apply extensive engineering knowledge to interpret client requirements accurately and develop robust, fully defined design solutions for each package. Our technical approach ensures that every system is engineered to meet project specifications, operational requirements, and reliability expectations, giving clients confidence that their projects are being delivered with competence and control.

Previous subsea designs include, but are not limited to, those listed below.

Subsea Umbilical Termination Unit
Subsea Distribution Unit
Subsea Control Module
Subsea Accumulator Module
Subsea Structures

🟢 General Design

Our design capability encompasses a wide range of engineering disciplines and is supported by the latest 2D and 3D CAD software for the development of detailed project design deliverables.

The following identifies additional engineering drawings and design deliverables produced to support project-specific technical and operational requirements.

Hydraulic Schematic Diagrams
Electrical Schematic Diagrams
Piping Isometrics
Layout / Assemblies
General Arrangements
Sheet Steel Fabrication Drawings
Structural Steel Fabrications
Precision Machining Drawings