Engineering Services

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ENGINEERING SERVICES

Smart Engineering Solutions For Modern Infrastructure

Feasibility & Concept Design

FEED Engineering

Power & System Studies

Primary & Layout Engineering

Secondary & P&C

Civil & Structural Engineering

EHV Cable Design

Owner’s Engineer

NGET SR188 Verification

Principal Designer Responsibility

As Built & Doc Control Support

Concept and FEED Engineering

Concept and FEED

Following the completion of a Concept and Feasibility Study, PTDS Consulting can delivers a comprehensive Front End Engineering Design (FEED) package to our clients. This critical phase provides an advanced level of design definition, enabling stakeholders to make informed, confident decisions regarding project sanction and capital investment.

Basis of Design Document
HV Plant Technical Data Sheets and relevant specs
Concept Single Line Diagram
General Arrangement Layouts
Stage by Stage Diagrams
AACE Class-3 Cost Estimate
Long lead equipment and strategy
System access requirements and constraints
Planning and environmental assessments
HAZID Register
Project Execution Plan
Project Risk Register
FEED Phase Planning

Key Summary of FEED Phase Benefits

PTDS Consulting delivers detailed FEED packages with technical planning, procurement support and project execution strategies.

Objective Description Client Benefit
Scope Definition Detailed process flow diagrams and system descriptions Clear, unambiguous project boundaries and deliverables
Programme Clarity Detailed milestone schedule with critical path analysis Realistic timeline for resource planning and management
Long Lead Equipment Strategy Identification and procurement plan for long-lead items Reduced risk of project delays from late equipment delivery
Cost Estimation Class-3 estimate with +/-15-20% accuracy Reliable financial foundation for investment decision

Power System Studies

Concept and Feasibility Studies
Power System Studies
Relay coordination studies
Load Flow and short circuit studies
Reactive Power Capability/ Voltage Control stability studies
Fault ride through and transient stability studies
G99 Compliance studies
P28/29 – Planning Limits for Voltage Fluctuations studies
G5/4 – G5/5 studies
Arc Flash studies
Primary Engineering

Primary Engineering

Design Intent Document (DID)
NGET SR188 design verification
Contract Drawing List (CDL)
Technical Specifications – GIS & AIS
Single Line Diagram
Switchyard Layout and Sections & Elevation
Stage by Stage Drawings
Non SF6 GIS Layout and Sections
Gas zone diagrams
Control and Relay Room Layouts
Review & coordination – Civil Drawings
Structure Loading Calculations & Design
Busbar Design and Calculations
Clamps and Connectors Designs
Post Insulator Design Calculations
Earthing Design
Mechanical Interlock Drawings
Cable Trench Layout and Sections
CDM & Hazard Drawings
Any other misc. drawings
Contractor Design Verification
Design Verification (internal)
Technical Meetings – Client|
Technical Meetings – Vendors
Tender Stage Design & Bill of Materials
Site Support
Automation Engineering Systems

P&C Engineering

Design Intent Document (DID)
Contract Drawing list (CDL)
Protection SLD
KLDs (First of Types + Repeats)
CT / VT Design Calculations
LVAC & LVDC - SLD
Technical Specifications – LVAC & LVDC
DC Load/ Battery Sizing Calculations
Support to Primary on Tech Specs
Review of Primary Plant OEM drawings
AC & DC Schematics – Protection
AC & DC Schematics – Control
Interlocking Schemes
Tripping/Closing Coil Cable Sizing Calcs
Protection Configurations (OEM scope)
Protection Settings SR141 (OEM scope)
PASS
Commissioning Switching Prog (CSPs)
GAs (First of Types + Repeats)
Wiring Diagrams (Primary Plant & P&C)
FO Diagrams
Block Cable Diagrams (BCDs)
Cable Schedules (CS)
Core Sheets
Pre-FAT & FAT Activities (OEM Scope)
Witness FATs
Design Verification (internal)
Technical Meetings – Clients & Suppliers
Site Support
Civil and Structural Engineering

Civil and Structural Engineering

Design Intent Document (DID) – Civil
Contract Drawing List (CDL)
Technical Specifications
Structural Designs & Details
Bill of Materials
Building Designs & Details
Foundation Designs & Details
Cable Trench Designs & Details
Lighting Design & Details
Any other misc. drawings
Design Verification (internal)
Technical Meetings and Tender Clarifications
EHV Cable Design

EHV Cable Design

Design Intent Document (DID) – Cables
Technical Specifications
Contract Drawing list (CDL)
Preparing cabling report,
Cable thermal analysis using Cyma software
List of drawings and deliverables typical
Cable route Plan drawings between Winding form Station substations
Lopp Cable route between Each wind station transformer
Cable route Section like Road & River crossing etc.
Cable Cross Bonding drawings
Cable link box drawings
Cable Schedule between equipment’s
Interfacing between Windfarm Manufacture, Civil discipline
Owner Engineer Services

Owner’s Engineer

Our Role as Your Technical Advisor

As an experienced Owner's Engineer, We serve as a trusted technical advisor, ensuring every project aligns with its vision, regulatory compliance, and operational goals. Our honest and sound guidance supports you through the entire project lifecycle..

What We Deliver

From design to construction, we bring clarity and expertise to your most complex projects.
Clear, honest, and technically sound guidance throughout the project lifecycle
Proactive oversight from concept to completion

Deliverables

Independent Design Assurance
Early validation of project scope, feasibility studies and layouts, SLD drawing, model, and calculation to ensure design integrity and grid code compliance.

Construction Readiness

Assessing contractor capability and delivery plans to ensure successful project execution.

Managing risks and opportunities

We provide a practical solutions to manage risks and potential opportunities to deliver better outcomes.

Client Advocacy

We protect your interests during disputes, delays, and design changes throughout the project.

Data-Driven Decisions

We use simulations, modelling tools and documented performance metrics.

NGET SR188 Verification

NGET SR188 Verification

Primary HV Plant CDAE
P&C Secondary CDAE
HV Cable CDAE
Civil CDAE
As the Contractor Design Approval Engineer (CDAE) under TP137/SR188 for National Grid projects, our role is critical in ensuring design assurance, safety compliance, and technical excellence across multidisciplinary teams-

Key Responsibilities

Providing design assurance and technical approval for substation project deliverables
Ensuring compliance with safety regulations and industry standards
Maintaining technical excellence across engineering disciplines
Coordinating with multidisciplinary teams to integrate design solutions
Reviewing and approving contractor designs to meet project requirements

Principal Designer Representative

Principal Designer Representative

PTDS Consulting’s engineers are experienced in undertaking Principal Designer Representatives for National Grid schemes in accordance with their TP137 procedure.
PTDS provides CDM Advisors who assist Clients, Principal Contractors, Contractors, Designers, and Principal Designs in discharging their duties under the CDM Regulations 2015.

BIM and CAD Engineering

BIM and CAD Engineering

CAD & Doc Control
BIM 3D Modelling for entire substation.
Document Control
As Built drawings support.