Engineering Procurement & Construction (EPC)
VOKE Engineering provides technical, economic and strategic advisory support for energy and industrial investment opportunities. We help clients evaluate project feasibility, assess upstream and subsurface opportunities, understand reservoir potential, and make informed decisions across the investment and asset lifecycle.
Project꞉ NNPCWARRI Refinery and
Petrochemical Company (WRPC) Quick Fix
Projects.
(DAEWOOD E&C Nigeria)
SCOPE: Maintenance, Repair and Replacement
of WRPC Wastewater Treatment Plant Field
Instrumentation (Process Instrumentation
Upgrade)
• Engineering, Specification and Selection of
appropriate, corrosion-resistant Modern field
instruments to replace the obsolete field
instruments in Sump – 171 172 A/B, Ballast
water pipeline from tank (Tk-360-01 and Tk360-002), Physiochemical Treatment Trains
1, 2, 3 & 4 and Chemical Building.
DAEWOOD E&C Nigeria
12
• Procurement of the New Process
Field Instruments including Flow
Transmitters, Flow Totalizer on 6’’
and 2’’ line Coriolis, Level
Transmitters, Pressure
Transmitters, Switches,
Conductivity Analyzers, oil content
water meter and Alarm.
• Decommissioning of obsolete field
Instrumentation, Installation,
calibration, testing, integration of
the field instruments into SCADA
and commissioning of the Field
Instrumentation to ensure process
monitoring
Date꞉ May 2024 – 2026
Project꞉ Connection of Phoenix Steel Mills Limited in Ogun State to TCN 132/33/11kV (TCN eligible customer)
SCOPE: 6.6kV Substation Switchgears
Procurement, Installation, Testing, and
Commissioning.
- Design & Engineering
Prepare General Arrangement (GA) drawings,
Schematic Diagrams, Bill of Materials (BoM), and
SLDs (Single Line Diagrams) for approval by the
owner. - Procurement
6.6kV, 3-phase, 50Hz, metal-clad, indoor Air
Insulated Switchgear (AIS) with Vacuum Circuit
Breakers (VCB) and VCB panels, protective relays
(numerical), Current Transformers (CTs), Voltage
Transformers (VTs), busbars, and marshalling
panels - Installation and Erection
- Site Preparation: Preparation of foundations,
trenches, and earthing of the panel to the main
station earth grid.
Transmission Company of Nigeria (TCN)
13
• Installation: Positioning, aligning, and bolting of
6.6kV panels to the base frame in the switchgear
room.
• Busbar Connection: Coupling of panels, jointing of
busbars, and ensuring torque meets manufacturer
specs.
• Cable Termination: Laying, dressing, and
termination of HT XLPE power cables and control
cables.
• Earthing: Connection of the common tinned copper
earth bar
- Testing & Commissioning
• Pre-Commissioning Checks – Visual Inspection,
Mechanical Checks and Insulation Resistance (IR)
Test
• Electrical Testing – Contact Resistance Test, High
Voltage (HV) Test, CT/VT Checks and Relay
Testing
• Commissioning – Functional testing of interlocks,
alarm schemes, and remote SCADA/DCS
operation and Final tightening of all connections,
removal of shipping braces, and verification of
space heater operation
• Documentation and Handover – Prepare As-Built
Drawings, Training/workshop to site operators on
functional features, maintenance, and
troubleshooting and site handover date
Project: 650,000 bpd Dangote Oil/Petroleum
Refinery Project
(Dangote Oil Refining Company)
SCOPE OF WORK; EPC Turnkey for the installation
of 2 X 11/6.6/0.4KV switchgears for the Residue
Fluid Catalytic Cracking Unit (RFCCU)
Substation at the Dangote Oil Refinery.
- Engineering and Design
Developing detailed layouts, schematic
diagrams, and cable schedules for the 11kV,
6.6kV, and 0.4kV systems, incorporate upgraded
switchgear and transformer specifications. - Equipment Procurement and Installation
(MV/LV)
Supply 2 X 6.6kV/0.4kV Switchboards: Installing
new motor control centers (MCCs) and
distribution panels, ensuring compliance with
modern safety standards (e.g., arc-resistant
switchgear).
Dangote Oil Refining Company
14 - Civil and Structural Work
Install 2 X 11/6.6/0.4KV switchgears
including protection relays with numerical,
multifunction relays (IEDs) for improved
diagnostics and protection.
Integrate into the substation automation
system (SAS) for integration into the
refinery’s main DCS (Distributed Control
System) of the Residue Fluid Catalytic
Cracking Unit (RFCCU) Substation for realtime monitoring and control - Commissioning and Testing
• Pre-commissioning Tests: Performing
insulation resistance (IR) tests, contact
resistance tests, and functional tests on
the new switchgears
• Site Acceptance Tests (SAT): Conducting
full-load commissioning tests to ensure
the upgraded switchgears meets
performance requirements before
handover.
Date꞉ May 2022
Project꞉ Upgrade of Low Voltage Electrical Panels for the Lease Automatic Custody Transfer (LACT) unit Replacement
SCOPE: Procurement & Repair Services
- Assessment and Planning – Inspection
of the existing panel for damage or
outdated components. Designing the
new panel to meet the specific load
requirements, voltage needs, and
safety standards of the LACT unit.
• Shutdown and Safety – Coordination
with control room operators to safely
isolate power source without
operations disruptions
Millennium Oil and Gas Company Limited
(MOGCL)15
• Dismantling and Removal –
Disconnection of all field wiring and
removal of the old panel, label wires
for reconnection.
• Installation and Mounting –
Installation of the new panel, Wiring
and Connection.
• Connection of the field wiring to the
new circuit breakers, ensuring correct
termination, grounding, and
extending cables that are too short
using junction boxes.
• Testing and Commissioning –
Functional testing of circuits,
insulation resistance checks to
ensure the new panel operates as
expected and all sensors and pumps
function
Date꞉ October 2022
Project꞉Dangote Oil Refinery.
(Dangote Oil Refinery)
SCOPE OF WORK; EPC Grounding and Earthing System for
Emulsion treatment Plant
❑ Engineering and Design Services
• Site Soil Resistivity Survey – Conducting fourpoint Wenner method testing to determine soil
resistivity.
• Design Calculation & Simulation – Performing
calculations for fault current, step/touch voltages,
and earth electrode resistance using ETAP
software
• System Design – Designing the main earthing
grid, earth pits, riser connections, and bonding for
all process equipment.
• Lightning Protection Design – Designing lightning
protection for tall structures, electrical
substations.
• Hazardous Area Classification – Ensuring
grounding design conforms to Hazardous Zone 1
or 2 requirements.
• Deliverables – Production of earthing layout
drawings, details, bill of quantities (BOQ), and
design reports.
❑ Procurement;
Grounding Conductors, Earth Electrodes, Earth
Pits & Inspection Wells, Connection Materials,
Bonding Components, Lightning Arrestors.
❑ Construction and Installation
• Trenching and Installation; Excavation and
installation of underground copper mesh
(main grid).
• Earth Electrode Installation; Driving earth
rods into the ground to achieve low
resistance
• Equipotential Bonding; Bonding all metallic
structures, vessels, pipelines, and cable
trays to the main earthing system.
• Exothermic Welding; Making all underground
connections using exothermic welding to
prevent corrosion.
• Installation of Earthing Pits; Constructing
inspection pits for regular testing.
❑ Testing, Pre-Commissioning, and
Commissioning.
Soil Resistivity, Earth Continuity, Earth
Resistance, Inspection, Documentation
Date꞉ October 2022
Project꞉EPC for Chemical dosing unit and storage
Building (Turnkey Basis)
(Dangote Oil Refinery)
SCOPE:
❑ Detailed Engineering Design (DED):
Development of civil, structural, mechanical, and
electrical drawings, including 3D plant models,
piping and instrumentation diagrams (P&IDs) for
connected utilities, and structural steel calculations.
❑ Procurement and Logistics
Procurement of construction materials (structural
steel, cement, roofing, flooring) and specialized
equipment (HVAC, fire detection/suppression
systems, racking)
❑ Construction and Installation
• Site Preparation: Clearing, grading,
construction of access roads.
Fabrication Works꞉
Dangote Oil Refinery
17
• Civil & Structural Works: Reinforced
concrete foundations, floor slabs,
structural steel erection, perimeter
fencing.
• Building Services (MEP): Installation of
electrical systems, plumbing, fire
suppression, ventilation/HVAC systems.
• Non-Destructive Testing (NDT):
Inspection of structural welding and
fabrication (painting and coating).
❑ Commissioning, Pre-commissioning,
and Handover
▪ Testing: Hydro testing of fire piping,
electrical testing, and structural integrity
checks
▪ Pre-commissioning: Final inspections,
cleaning, and preparation of systems for
operation
▪ Handover: Final inspection, approval by
regulatory authorities, training for client
personnel, and transfer of final
documentation
Date꞉ July 2019
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