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1. Project Name: Emergency Sectional Replacement & Reburtal of Exposed Gas Pipeline
Project Summary:
Bogovite Engineering Limited was contracted to execute the emergency sectional replacement and reburial of an exposed section of a gas pipeline system along a defined pipeline corridor. The objective of the project was to restore the integrity of the pipeline and salvage affected sections at the exposed and damaged stream crossing.
The project was executed using experienced manpower, as well as appropriate light and heavy marine equipment, in strict compliance with safety standards and operational procedures. Bogovite Engineering Limited successfully mobilized personnel and equipment to the site and completed the works, followed by safe demobilization.
The scope of work included, but was not limited to, the following:
- Project documentation and site visit
- Material procurement
- Pre-mobilization inspection and certification of project personnel
- Mobilization of personnel, equipment, and materials to site
- Site preparation and setup
- Gas testing prior to commencement of operations
- Survey activities along the repair segment
- Excavation of repair segment and pipeline probing
- Excavation of true and flotation ditches
- Stringing of line pipes along the right-of-way
- Fit-up and welding of pipeline sections
- Radiographic Testing (RT) of field weld joints
- Sleeve wrapping and concrete coating of pipeline sections
- Cold cutting at tie-in points and salvaging of defective pipeline segments
- Pulling and positioning of welded pipeline sections into the ditch
- Excavation of true ditches at upstream and downstream sections of the stream banks to required depth
- Post-sounding of excavated ditches to confirm integrity and depth compliance
- Lowering of pipeline into the prepared ditch
- Tie-in operations at both upstream and downstream sections
- Post-sounding of installed pipeline to verify proper placement
- Coating of tie-in weld joints at upstream and downstream connections
- Backfilling of excavated sections
- Site restoration to original or acceptable condition
- Back-loading of equipment and unused materials
- Demobilization of personnel and equipment from the site
2. Project Name: Replacing & Reburying Exposed Stream Crossing Section
Project Summary:
The com was contracted to execute the emergency sectional replacement and reburial of an exposed stream crossing section of a 16-inch gas pipeline. This intervention followed a detailed pipeline integrity assessment conducted along the pipeline route, with the objective of restoring system integrity and salvaging the affected section at the exposed stream crossing.
The project was carried out using experienced manpower and a combination of light and heavy marine equipment, in strict adherence to established safety standards and operational procedures.
Bogovite Engineering Limited successfully mobilized personnel and equipment to site and executed the works to completion, followed by full demobilization in line with project requirements.
The scope of work included, but was not limited to, the following:
- Project documentation and site visit
- Material procurement
- Pre-mobilization inspection and certification of personnel
- Securing Field Task Order (FTO) with host community
- Mobilization of personnel, equipment, and materials to site
- Site preparation and setup
- Gas testing prior to commencement of operations
- Survey activities along the repair corridor
- Excavation of repair segment and pipeline probing
- Excavation of true and flotation ditches
- Stringing of line pipes along the right-of-way
- Fit-up and welding of pipeline sections
- Radiographic testing (RT) of field-welded joints
- Sleeve wrapping and concrete coating of pipeline sections
- Cold cutting at tie-in points
- Salvaging of defective pipeline segments and pulling of welded pipes into the ditch
- Excavation of true ditches at upstream and downstream sections of the stream banks to required depth for proper pipe seating
- Post-sounding of excavated ditches to confirm compliance
- Lowering of line pipes into the prepared ditch
- Tie-in operations at both upstream and downstream sections
- Post-sounding of the installed pipeline
- Coating of added pipe spools at tie-in sections (upstream and downstream)
- Backfilling of excavated areas
- Restoration of site to acceptable environmental condition
- Back-loading of equipment and materials
- Demobilization of personnel, equipment, and remaining materials
3. Project Name: Platform Construction & Piping Installation Works
Project Summary:
Following a Facility Integrity Assessment conducted on the Metering Station and Intermediate Pigging Station, Bogovite Engineering Limited (BGV) was engaged to execute the construction of a work platform around the slop tank pit, as well as install piping systems for the safe evacuation of condensate at the Metering Station and Intermediate Pigging Station.
The project scope encompassed procurement, pre-fabrication, and fabrication of platform components, fit-up and welding of structural members, drilling for hold-down bolts, installation of supports, and formwork construction. The Project was completed with a top-notch execution procedure to the satisfaction of the project owner.
- Engineering planning and fabrication of platform components
- Fit-up and welding of structural steel members for work platform construction
- Installation of supports, hold-down bolts, and structural reinforcements
- Construction of formwork and platform integration around slop tank pit
- Installation of piping systems for condensate evacuation
- Testing, alignment, and final mechanical adjustments of installed systems. Site completion works and demobilization of personnel and equipment.
4. Project Name: Modification of Ruptured Fire Hydrant Ring System
Project Summary:
The company was contracted to carry out the emergency modification of a ruptured Fire Hydrant Ring at Onne Metering Station, converting the system from an existing underground installation to an above-ground configuration.
The scope of work included pre-fabrication of piping spools based on the layout of the existing hydrant network, fit-up and welding of tees, elbows, and flanges to minimize hot work at the site, as well as civil and structural activities such as formwork construction, bending of reinforcement bars for pipe supports, casting of supports, and excavation. The works also involved cutting out sections of the existing hydrant ring and tying in new 6-inch pipe fittings to the existing 4-inch system.
- Site visit and assessment
- Preparation of project documentation
- Pre-mobilization inspection and certification of personnel
- Mobilization of personnel, equipment, and materials to the site
- Site preparation and setup
- Gas testing prior to hot work activities
- Cold cutting, fit-up, and welding operations
- Procurement of all required materials
- Management of community relations and site security
- Installation of a new 6-inch Schedule 40 steel hydrant ring with flanged connections for ease of maintenance
- Provision and installation of adequate pipe support around the hydrant ring
- Above-ground installation of the hydrant ring system
- Connection of the new ring to existing hydrant points
- Decommissioning of the old underground ring and tie-in to the new system
- Non-Destructive Testing (NDT), including radiographic (X-ray) inspection of all welded joints to verify weld integrity
5. Project Name: Emergency Remedial Works at Intermediate Pigging Station
Project Summary:
Our client conducted a Facility Integrity Assessment on the Intermediate Pigging Station. Following the outcome of the assessment, Bogovite Engineering Limited was engaged to execute emergency remedial works aimed at restoring the integrity and functionality of the facility and its associated piping systems.
The remedial scope included replacement of ball valves, cut-out, fit-up, and welding of sockets, elbows, and repair of the 16-inch pig trap ball valve (including Teflon components), and rehabilitation of the facility entrance gate.
The project was executed using experienced personnel, appropriate light and heavy equipment, and in strict adherence to safety standards and procedures.
Bogovite Engineering Limited successfully mobilized personnel and equipment to the site and completed the emergency remedial works in line with established engineering and safety standards, meeting the client’s objectives.
- Site visit and preliminary assessment
- Preparation of project documentation
- Pre-mobilization inspection and certification of personnel
- Mobilization of personnel, equipment, and materials to site
- Site preparation and setup
- Gas testing prior to commencement of work
- Cold cutting, fit-up, and welding operations
- Servicing of actuator valve assemblies at the station
- Servicing/maintenance of 16-inch ball valve on the pig barrel.
- Replacement of gaskets on the 18-inch valves on the pipeline
- Replacement of drain valves on pig trap lines
- Replacement of pressure gauges
- Replacement of actuator gauges
- Pre-fabrication of globe valve drain line connection to minimize hot work on site
- Depressurization of pipeline segment and isolation of relevant valves
- Nitrogen purging of work sections via ½-inch inlet nipple for safe hot work
- Welding of prefabricated socket weld spools
- Decoupling and servicing of actuator systems, including tubing replacement
- Greasing of actuator nipples and replacement of actuator oil
- Removal and workshop maintenance of 16-inch ball valves
- Replacement of valve gaskets through bonnet decoupling (18-inch valves)
- Replacement of drain line ball valves with client-supplied units
- Reinstallation of the 16-inch valves
Repair and reinstallation of the station entrance gate
- 100% Non-Destructive Testing (NDT), including radiographic testing (RT) of welded joints
- Re-commissioning of the pipeline system
- Handling of government, security, and community-related matters
- Procurement and supply of all required materials, tubing, and accessories
- Environmental restoration of impacted areas
- Demobilization of personnel and equipment
- Submission of close-out report, including photographic documentation (before, during, and after execution)
6. Project Name: Recommissioning of ALSCON Gas Pipeline
Project Summary:
The recommissioning of the Obigbo–Ikot Abasi segment of the ALSCON Gas Pipeline was executed to restore gas supply to FIPL customers
The recommissioning activity involved the injection of nitrogen into the pipeline system using quad racks. Each quad consisted of sixteen nitrogen cylinders, with each cylinder pressurized to 200 bar and containing approximately 10 cubic feet of nitrogen. This process was undertaken to safely purge and prepare the pipeline for the reintroduction of gas.
The project was executed using experienced manpower and appropriate light and heavy equipment, in strict adherence to safety standards and operational procedures. Bogovite Engineering Limited successfully mobilized personnel and equipment to the site and completed the recommissioning exercise, followed by full demobilization.
The scope of work included, but was not limited to, the following:
- Management of all community-related matters associated with the project
- Provision of all required materials, including tubing, hoses, fittings, and accessories, as well as necessary equipment in line with the Bill of Quantities
- Mobilization of personnel and equipment to the metering station following successful community engagement
- Execution of pipeline connections and purging of the pipeline segment using nitrogen gas
- Restoration of impacted areas and demobilization of personnel and equipment from site
7. Project Name: The Replacement Of Line Actuator Break Valve.
Project Summary:
The replacement and servicing of Line Break Valves (LBV) of a 24” × 600# with an actuator at KP196 (Ajaokuta), as well as the servicing of existing LBVs at KP164 (Ogbangede) and KP132 within Asset Management North (AMN).
Bogovite Engineering Limited was contracted to execute the project across approximately 64 kilometers of pipeline. The objective was to restore operational integrity of the pipeline system and salvage the existing line break valves where applicable.
The project was executed using experienced manpower, supported by appropriate light and heavy equipment, in strict compliance with safety standards and operational procedures. Bogovite Engineering Limited successfully mobilized personnel and equipment to the site and completed the replacement and servicing works, followed by safe demobilization.
The scope of work included the following:
- Project documentation and site visits
- Material procurement
- Pre-mobilization inspection and certification of personnel
- Securing Field Task Order (FTO) with the host community
- Mobilization of personnel, equipment, and materials to the site
- Site preparation and setup
- Gas testing prior to commencement of operations
- Project scope survey activities
- Valve tubing connections
- De-roofing activities were required
- Maintenance and servicing of existing Line Break Valves (LBVs)
- Installation of new 24” × 600# LBV with actuator at KP196
- Fit-up and welding of pipeline and valve connections
- Radiographic Testing (RT) of field-welded joints
- Pipeline depressurization prior to intervention
- Cold cutting at tie-in points
- Flange transitions and alignment
- Nitrogen purging and system cleaning
- Tie-in operations at designated KP locations
- Pre-commissioning of installed systems
- Painting and corrosion protection
- Site restoration upon completion
- Back-loading of equipment and materials
- Demobilization of personnel, equipment, and resources from site
8. Project Name: Inspection & Cleaning of 8 NOS. Pressure Vessels
Project Summary:
Inspection and Cleaning of Eight (8) Pressure Vessels at NGMC initiated an integrity assessment program for eight (8) pressure vessels located at its Metering Station. As part of this initiative, Bogovite Engineering Limited (BGV) was contracted to carry out the inspection and cleaning of the designated vessels.
The scope covered Filter Separators (F310A, F310B, F310C, HFN30TRC, HFN60TRC1, HFN60TRC2) and Knockout Drums (KOO1/KOO2), to ensure their continued integrity and safe operation under existing service conditions.
The project was executed using experienced manpower, supported by appropriate light and heavy equipment, and in strict compliance with established safety standards. Following a kick-off meeting, Bogovite Engineering Limited mobilized personnel and equipment to site and successfully completed the project before demobilization.
The scope of work included, but was not limited to, the following:
- Project documentation and site visit
- Material procurement
- Pre-mobilization inspection and certification of personnel
- Mobilization of personnel, equipment, and materials to site
- Site preparation and setup
- Gas testing and safety checks
- Survey and inspection activities
- Ultrasonic thickness measurement of vessel shells, heads (top and bottom), using approved UT devices
- Comprehensive ultrasonic thickness testing to determine suitability for continued operation
- External inspection of welds for cracks, defects, or failures
- Inspection and tightening of foundation bolts and mountings
- Inspection and repair (where required) of external ladders and brackets
- Inspection, testing, and recalibration of all Pressure Safety Valves (PSVs)
- Testing carried out at the approved workshop under client supervision
- Certification, tagging, and sealing of tested valves to prevent tampering
- Recalibration of Level Control Valves (LCVs) to required set points
- Internal cleaning of all pressure vessels
- Replacement of high-pressure filter elements with new units
- Replacement of manway/barrel door seals
- Nitrogen purging and gas commissioning of vessels
- Surface preparation and application of primers, paints, and protective coatings
- Inspection and Non-Destructive Examination (NDE) conducted in accordance with API 510 and ASME PCC-2 Article 5.2 guidelines
- Inscription/marking of inspection dates and operating parameters on vessels
- Submission of final technical report
- Site restoration
- Back-loading of equipment
- Demobilization of personnel, equipment, and materials
9. Project Name: Gas Supply Connection from NGIC Pigging Station (Ewekoro) to Paras Energy Limited CNG Plant, Papalanto, Ogun State
Project Summary:
Paras Energy Limited acquired land in Papalanto, Ogun State, with the objective of developing a Compressed Natural Gas (CNG) plant. To support this development, NGIC approved a gas supply connection from its Pigging Station at Ewekoro. In consideration of future expansion and potential third-party access, NGIC also approved the construction of a Pressure Reduction and Metering Station (PRMS) and a control center.
Bogovite Engineering Limited was initially engaged to carry out a detailed site evaluation and engineering assessment to determine the most suitable execution methodology, ensuring compliance with best engineering practices and minimal environmental impact.
Subsequently, DDFFGHH Limited was contracted to execute the engineering, procurement, and construction (EPC) scope of the project. The works were completed using experienced manpower, supported by appropriate light and heavy equipment, in strict adherence to safety and quality standards. The project was successfully executed, and all personnel and equipment were safely demobilized upon completion.
The project scope included, but was not limited to, the following:
- Project documentation and site visits
- Material procurement
- Â Pre-mobilization inspection and certification of personnel
- Securing Field Task Order (FTO) with host community
- Mobilization of personnel, equipment, and materials to site
- Site preparation and setup
- Cold cutting at tie-in points
- Flange transition and pipeline connections
- Nitrogen purging and pre-commissioning
- Tie-in operations and site restoration
- Back-loading and demobilization
- Submission of project documentation
- Procurement of tools, equipment, and materials
- Mobilization of personnel, equipment, and materials to site
- Transportation of line pipes from Paras Energy Limited stack yard to work location
- Construction of PRMS and control building foundations
- PRMS shelter construction
- Drainage system installation
- Valve supports and foundation construction
- Perimeter fencing
- Lighting pole installation
- Control building and gatehouse construction
- Main access and emergency exit gates
- Cable installation
- Installation of lighting poles and fittings
- Surge protection system installation
- Earthing system installation
- Installation of anodes
- Cable laying
- Installation of transformer rectifier
- Installation of test posts
- Right-of-Way (ROW) preparation
- Stringing of line pipes
- Welding and laying of pipeline
- Radiographic Testing (RT) of weld joints
- Coating of welded joints
- Ditching (excavation)
- Lowering of pipeline into trench
- Fabrication and painting of pipe spools
- Venting and gas testing at NGIC station
- Positive isolation (spading)
- Manual excavation of tie-in area
- Cold cutting of existing pipeline
- Installation of welding enclosure (welding tent with fire blankets and ventilation)
- Nitrogen purging and pigging operations for safe welding
- Surface preparation (bevelling) of cut pipe ends
- Installation and welding of equal tee to existing pipeline
- Installation of spools, valves, fittings, and supports
- Provision for future pipeline connections
- Tie-in of newly constructed pipeline to existing system
- Welding in accordance with approved Welding Procedure Specification (WPS)
- Bolting in accordance with approved procedures
- Non-Destructive Testing (NDT) of tie-in welds
- Hydrostatic testing of constructed pipeline
- Removal of temporary isolation (de-spading)
- Installation of cathodic protection system
- Backfilling and site reinstatement
- Demobilization
10. Project Name: Engineering, Procurement, Installation, and Commissioning of Volumetric Flow Control System (VFCS) (Lot II), Ibafo, Ogun State, Nigeria
Project Summary:
The NNPC Gas Infrastructure Company Limited (NGIC) has embarked on a strategic initiative to deploy volumetric flow control systems across its pipeline network to ensure equitable distribution of natural gas to all its customers by limiting supply to contractual volumes. To achieve this objective, NGIC contracted Bogovite Engineering Limited for the Engineering, Procurement, Installation, and Commissioning (EPIC) of these critical systems. This project details the successful implementation of the project, which involved the installation of two volumetric flow control systems—a 14-inch and a 4-inch system—at a remote and unmanned project site. Given the site’s unique conditions, the project required the integration of advanced signal relaying capabilities to transmit data from the respective locations to NGIC’s SCADA control centres for effective monitoring and control. This initiative underscores NGIC’s commitment to enhancing operational efficiency and reliability in its gas distribution network.
Bogovite Engineering Limited mobilized both equipment and personnel to site, and demobilized after a successful completion of the Engineering, Procurement, Installation, and Commissioning of Volumetric Flow Control Systems (VFCS) project.
The job scope of work (sow) involves, the following: Project Documentation, Site Visit, Material Procurement, Pre-Mob Inspection And Certification Of Project Personnel, Secure FTO With Host Community, Mobilization of Personnel, Equipment and Materials to Site, Site Preparation/Set-Up, Cutting Of Tie-In Points, Flange Transition, Pre-Commissioning, Tie-In Operations And Site Restoration, Back-Loading Of Equipment, Demobilization Of Equipment/Materials And Personnel From Site.
- Secure FTO
- Document Submission
- Procurement of Materials
- Kick-Off Meeting
- Mobilization of Materials, Equipment, and Personnel to Work Site
- Safety Induction
- Setting Of Site Layout
- Equipment Rig-Up
- Fitting, Grinding, And Welding
- Tie In of Line-pipes
- NDT of Welded Joints
- Site Clean-Up / Rehabilitation.
- Demobilization Of All Personnel and Equipment
- Preparation And Submission of Close-Out Report
- Mark-Out of Foundation Area for the VFC Skids
- Excavation of Foundation Area for the VFC Skids
- Blinding of Foundation for VFC Skids
- Preparation of Form Works for the VFC Skid Foundations
- Preparation of Reinforcements for the VFC Skid Foundations
- Installation of Form Works for the VFC Skid Foundations
- Installation of Reinforcements for the VFC Skid Foundations
- Casting of the VFC Skid Foundations
- Backfilling of the VFC Skid Foundations.
- Mark-Out of Pipeline Sections Associated with Tie-In
- Nitrogen Purging of Pipeline
- Cold Cutting of TP01 and TP02 for Tie-In and Hot work
- Welding of Tie-In Spools
- Bevelling of TP01 And TP02
- Fit-Up and Welding of TP01
- Installation of VFC Skids- Sections(1,2&3) for 4” and 14” Pipelines
- Bolting of VFC Tie-In Spools
- Fit-Up and Welding of TP02 Tie-In/Hook-Up spools
- NDT of Entire Welded Joints
- Final Bolt-Up of the Connected Spools
- Installation and Connection of Electrical and Instrument Cables
- Connection of Cables and Other Instrument Lines to the Control Room
- Installation and Connection of RTU
- System Integration and Synchronization
- Touch-Up Painting of Welded Joints
- Reinstate the Work Site
- Demobilize Personnel and Equipment
