Project Overview
Fairtex Group executed the replacement of a 24-inch shutdown valve (SDV1 3101) within an offshore production environment for TOTAL E&P Nigeria Limited. The scope formed part of an operational continuity and asset integrity intervention targeting critical process isolation infrastructure within an active offshore facility.
Execution activities were coordinated within live brownfield operating conditions requiring controlled lifting, scaffold-supported access, mechanical isolation management, and phased installation sequencing to minimize disruption to ongoing production operations.
The Challenge
The existing 24-inch shutdown valve formed part of a critical process isolation system within offshore production infrastructure. Asset aging, operational wear, and maintenance exposure increased the requirement for planned intervention to maintain shutdown reliability and process containment assurance.
The offshore environment introduced additional execution constraints including restricted work areas, lifting coordination, simultaneous operations management, and controlled access around active piping and process systems.
The intervention required removal and replacement activities within an operational offshore facility while maintaining strict control over isolation boundaries, lifting operations, and shutdown coordination.
Our Approach
Fairtex deployed a phased execution methodology integrating offshore construction coordination, mechanical intervention planning, scaffold access preparation, and controlled valve replacement procedures.
Work packs were developed to support lifting activities, flange management, alignment verification, bolting integrity, and reinstatement activities across the affected shutdown valve assembly.
Execution teams coordinated closely with offshore operations personnel to align intervention windows, isolation permits, and mechanical completion requirements prior to system reinstatement.
Phased Delivery
Assessment and Engineering Review
Pre-execution reviews were completed to assess valve accessibility, lifting constraints, piping interface conditions, and shutdown coordination requirements associated with the 24-inch SDV replacement scope.
Mobilization and Offshore Preparation
Personnel, lifting tools, scaffold systems, and mechanical equipment were mobilized offshore to support controlled removal and installation activities within the designated process area.
Valve Removal and Installation
The existing shutdown valve assembly was isolated, removed, and replaced using controlled mechanical handling procedures. Alignment checks, flange preparation, bolting activities, and installation verification were completed prior to reinstatement.
Testing and Reinstatement
Post-installation validation activities included mechanical integrity checks, inspection verification, and coordinated reinstatement support prior to return-to-service activities.
Outcome
The completed intervention restored shutdown valve functionality across critical offshore process infrastructure while reducing operational exposure associated with aging isolation equipment.
The project supported continued production reliability, improved maintainability of the affected valve system, and reinforced integrity management objectives within the offshore facility.
Execution was completed within an active offshore processing environment using phased brownfield coordination and controlled mechanical intervention procedures.
