Subsea Intervention Engineer
Aldelia — Nigeria
The Subsea Intervention Engr position is responsible for : Provide first level technical support to FPSO and offshore teams on all subsea related issues Provide technical support to subsea projects and major integrity subjects Ensure subsea equipment is operated within its approved design envelope - Identify subsea equipment anomalies and raise Non Conformance Reports (NCRs) Propose, implement, and follow up mitigation and corrective measures Troubleshoot subsea equipment failures and lead technical investigations, issuing investigation reports Prepare, coordinate, and review subsea intervention work packages (IWPs) and detailed procedures for repair and intervention activities Provide technical assistance for offshore subsea operations (trees, manifolds, wellheads) and related topsides equipment (HPU, SCU, SPCU) Provide technical support to CCR for subsea operations (subsea switches, IWOC valve operations, etc.) Manage and monitor subsea equipment located on the FPSO, including HPU and Subsea Control Systems Perform daily monitoring of subsea control fluid (HW460R) consumption, identify leaks, and coordinate corrective actions Support commissioning of new wells and provide start up assistance Perform well leak testing in accordance with CR EP FP 422 and ensure WIMT is regularly updated Support subsea flow assurance activities and related operational issues Ensure availability, operability, and integrity of subsea systems and equipment Ensure all subsea third party devices (MPFM, ASD, downhole gauges, CITVs) remain fully operational Ensure all subsea critical spares are adequately stocked on the FPSO in line with MRP requirements Follow up and close all outstanding punch items from subsea commissioning activities Create, maintain, and update a database of subsea anomalies, tracking issues raised and corrective actions taken Create, maintain, and issue weekly subsea equipment status reports covering critical subsea components Issue daily subsea activity reports to site management and onshore subsea maintenance teams when offshore Participate in subsea weekly team meetings and weekly safety meetings Maintain high HSE standards for all subsea and offshore operations Actively raise and follow up on safety and operational anomalies observed offshore Participate in HAZID, HAZOP, HIRA, and JSA related to subsea interventions and operations Prepare and maintain HSE dossiers, including those related to subsea safety valve testing Prepare task plans, work Risk Assessments (JRAs), and Permit to Work (PTW) documentation for subsea interventions Contribute to the preparation of SIMOPS dossiers and ensure strict application of SIMOPS rules Support site operations during well preservation, SIMOPS activities, and subsea HPU maintenance Respond to subsea emergencies, including spill response, in coordination with RSES Contribute to compliance with ISO 14001 environmental requirements Assist in the creation and maintenance of Subsea DGS, standing instructions, and approved derogations Supervise OIMR vessel operations from the FPSO during subsea intervention activities Supervise OEM and subcontractor personnel during subsea operations on the FPSO Liaise with SPS Company site representatives on technical matters, repairs, and testing of subsea equipment at contractor yards Develop expertise in subsea systems engineering and maintain strong knowledge of flow assurance philosophy Purposes Deliver high quality technical dossiers to support sound decision making, based on realistic assessments of risks, uncertainties, and opportunities. Optimize subsea intervention methods, tools, and procedures to improve operational efficiency, safety, and reliability. Provide technical expertise and recommendations for the selection of subsea technologies, equipment, and service providers to enhance operational effectiveness and reduce operational risk. Ensure availability, operability, and integrity of subsea systems and equipment throughout the asset lifecycle. Support offshore and FPSO operations during start up and stabilization phases, ensuring safe and reliable subsea performance. Operate and administer the Subsea SMART Tool workstation, ensuring effective use for monitoring, diagnostics, and operational decision making. Develop and maintain strong technical knowledge of the Subsea Control Unit (SCU) and SMART Tool, enabling effective troubleshooting and reducing dependency on OEM personnel. Ensure compliance with Company policies, technical standards, and HSE requirements, while optimizing safety, performance, and productivity. Define, implement, and optimize maintenance and inspection strategies to support long term asset integrity, reliability, and service continuity. Enhance equipment reliability and availability through continuous improvement of maintenance, inspection, and intervention processes. Analyze maintenance and intervention costs and propose cost effective technical solutions aligned with asset and company financial objectives. Maintain and update technical documentation, databases, and records, ensuring data accuracy, traceability, and accessibility. Analyze incidents, failures, and anomalies, and develop corrective and preventive actions to avoid recurrence and improve operational safety and efficiency. Contribute to the development of technical competencies within the team, fostering knowledge transfer, autonomy, and continuous improvement. Collaborate effectively with internal stakeholders, OEMs, contractors, and partners to improve subsea intervention practices and drive innovation. Participate in strategic and cross asset projects, ensuring alignment with Company long term objectives and global best practices. Promote and uphold the Company’s Code of Conduct and HSE culture, ensuring a safe, ethical, and compliant working environment. Maintain an international and cross affiliate perspective, ensuring consistency with Company’ global standards and operational strategies. Qualification / Experience required Bachelor’s or equivalent level Technical skills required for the position : Subsea trees and wellheads Subsea control systems (MUX, electro hydraulic, IWOCS) Hydraulic systems and accumulators Electrical and instrumentation basics Subsea valves, connectors, hubs, and actuators Troubleshooting and fault diagnosis Root cause analysis (RCA) ROV operations and intervention support Hot stab and hydraulic override operations Interpretation of subsea visuals and survey data Subsea operating procedures and limits Integrity management and inspection data interpretation Failure analysis and repair solutions OEM manuals and technical documentation Management of Change (MoC) and deviations Subsea engineering standards (API / ISO / DNV – awareness level) HSE and risk based technical decision making Behavioral competencies required for the position : Clear verbal and written communication Problem solving and analytical thinking Ability to work under pressure Attention to detail Teamwork and collaboration Stakeholder and interface management Decision making and sound judgement Safety first mindset Adaptability and flexibility Time management and prioritization Professionalism and accountability Willingness to challenge unsafe practices Cultural awareness and interpersonal skills Specific knowledge required for the position : Subsea production systems architecture Subsea trees and wellheads (production & intervention) Subsea control systems (MUX, electro hydraulic, IWOCS) Hydraulic and electrical umbilicals Subsea valves, actuators, hubs, and connectors Subsea operating envelopes and design limits ROV operations and subsea intervention methods Subsea inspection and monitoring techniques Integrity management and degradation mechanisms Failure modes and effects of subsea equipment OEM manuals, data books, and as built documentation Subsea operating and maintenance procedures Management of Change (MoC) and deviation processes Subsea engineering standards and company specifications (API / ISO / DNV / Company GS) HSE requirements for subsea operations Brownfield operations and life of field support concepts Level of experience required for the position : Subsea Intervention Engineer — 5–8 years' experience. Lead day to day technical support for subsea equipment (trees, control systems, umbilicals). Conduct and lead root cause analyses (RCA) for routine faults and recurring operational issues. Drive minor modifications (MoC) and technical improvements to enhance equipment reliability and performance. Coordinate with OEMs, service providers, and vendors to secure timely technical responses and issue resolution. Support offshore campaign planning, ensuring readiness of procedures, equipment, and critical spares. Provide on call technical guidance to offshore operations and FPSO teams during subsea activities. Hands on experience from deepwater offshore intervention campaign and well commissioning.
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