Julien Decaudaveine

Project Construction Manager - Offshore Wind, Power, Oil & Gas

Paris, Île-de-France, France

About

Construction & Engineering management - Oil & Gas - Wind - Power - Generalist engineer (M.Sc. Mines Paris), with practical knowledge of Process, Structure, Piping, Machinery, Civil. - Conversant with Project Control and Procurement of materials & services. - Record of managing construction sites safely, without labour unrest, and with a focus on Quality. - Methodical management of construction risks, notably in SIMOPS or Brownfield environments. - Keen on efficient management of international subcontractors. - Effective team leading / team building ability in remote/frontier environments - Intercultural talent and experience. 17 years in West-Africa.

Experience

  • Fabrication Manager, Mozambique LNG at TotalEnergies
    Sep 2024 - Present · 1 yr 11 mos

  • Onshore Construction Manager, PGL project at EDF Renouvelables
    Apr 2021 - Jan 2024 · 2 yrs 10 mos

    PGL, Provence Grand Large project, built 3 massive floating wind-turbines, 8.3MW each, and installed them at the end of 2023 in the Mediterranean Sea, 20km offshore CAMARGUE. It is a pilot wind-farm with innovative designs, notably tension leg anchoring. Main contractors were SBM Offshore and Siemens Gamesa. The large floaters were assembled by Eiffage Métal in their Fos-sur-Mer yard and the wind turbines were integrated on the floaters in Port-St-Louis du Rhône. My main missions and challenges were as follows: - To ensure that the fabrication and assembly contractors adhere to the strict quality & safety standards of Offshore Wind, despite large sub-assemblies fabricated in remote countries and prototype work. - To establish a functional base and yard in the busy Marseille port facilities (GPMM), by Feb 2023, for WTGs integration on the floaters by SGRE. - To support the contractors on the integration yard, notably with distributed power supply and SIMOPS coordination. - To manage the base and yard during integration and after (demob).

  • Yard Fabrication Project Manager at Saipem
    Dec 2019 - Dec 2020 · 1 yr 1 mo

    BP TORTUE, off the coast of Senegal and Mauritania, comprises a deep offshore gas production system tied back 75km to a pre-treatment FPSO unit (condensate separation) positioned at the continental shelf edge, which then transfers gas to a near-shore shallow water hub – the GTA Hub – for Liquefied Natural Gas production and export. GTA Hub Phase 1 will have a production capacity of 2.5 MTPA. Target first gas is 2022. The GTA Hub, located 10km offshore, comprises a breakwater to protect marine operations, and an LNG terminal including LNG production on a floating unit (FLNG) and LNGC carrier loading. Saipem Karimun Yard is prefabricating the LNG terminal dock structure, composed of 4 platforms and 70 steel structures totaling 25,000t. Karimun initial budget (excluding material) was $ 80M. I was in charge of kicking off construction up to 35% progress. Peak manpower: 1000, including 300 welders. Main challenges: under-budgeting, welding QC, cost cutting due to Covid delays, engineering and material delays and quality, competing urgent windfarm projects, attrition of supervision personnel not returning from overseas leave due to Covid…

  • Total (4 yrs 2 mos)
    • EGINA FPSO Project close-out report writing (overall)
      Apr 2019 - Jun 2019 · 3 mos

    • Hook-up Coordinator, EGINA FPSO
      Sep 2018 - Mar 2019 · 7 mos

      Mooring of EGINA FPSO on its final deep offshore location (1500m depth). Tie-in of the subsea facilities to the ship (crude oil production, gas export, water re-injection, umbilicals). Completion of all ship facilities which can only be done offshore. 600 personnel onboard (gangway connected Flotel for extra accommodation). Main contractors: Samsung Heavy Industry (ship builder), DBN, Saipem (subsea work). First Oil was achieved on Schedule on 29 Dec 2018.

    • Integration Manager, EGINA FPSO
      Nov 2017 - Aug 2018 · 10 mos

      Completion of EGINA FPSO in Samsung Heavy Industry Lagos yard (SHI-MCI), The vessel was built at 75% in Korea and delivered to Nigeria in Jan. 2018: Integration of all Nigerian fabricated hull appurtenance and 6 topside modules (out of 18). Total 11,000t. A 4,000t land crane was mobilized from ALE to that end. Work was completed in just 7 months with workforce peaking at 2300. Heaviest module 2,600t.

  • ExxonMobil (28 yrs 4 mos)
    • Construction Manager
      Dec 2010 - Oct 2014 · 3 yrs 11 mos

      Addition of 40MW (two SIEMENS SGT-600 gas turbine generators) to power plant of QIT - Managed construction from grass root to mechanical completion: 1.5 million Mhrs worked with outstanding safety performance. Received Company President SHE award for 2013. - Managed an essentially Nigerian PMT and the local EPC contractor team, eventually numbering 220 (SUDELETTRA, Nigerian owned, Indian run). - Established construction site infrastructures within QIT, after clearing and backfilling the site: offices, workshops/stores, batch plant, high security fencing and access control. - Managed peaceful secure site despite many disturbances from communities and workers. - Organized safe transport of the heavy and oversize turbines and generator skids (4 items 80MT each) from Port-Harcourt to QIT (100 km). - Managed the construction itself, including: + Casting of two 264 m3 monoblock reinforced concrete foundations. + Installation and assembly of the heavy GTG skids and ancillaries. Use of jack & slide instead of heavy crane to lift the 80MT modules. + Erection of a large steel building for the GTGs (40x30x15m) + Fabrication/installation of Diesel tank, fuel skids, piping, electrical MV/LV facilities + Tie-ins to the live existing power plant (11kV, LV, controls, utilities)

    • Functional Construction Advisor
      Mar 2007 - Nov 2010 · 3 yrs 9 mos

      - Construction staff recruitment - Scouting/development of Nigerian construction and fabrication contractors - Project construction planning

    • Construction Manager
      Mar 2005 - Feb 2007 · 2 yrs

      Addition of a new 65 kbd LPG fractionation unit in BRT - Started-up construction from grass root, and ramped it up to 60% completion: 1.5 million Mhrs worked with excellent safety record. - Managed a very diverse PMT and contractor team, that peaked at 1200, of which 1000 Nigerians, 200 Koreans, Philipinos, Japanese, etc. EPC contractors were JGC and DAEWOO. - Established a 250-bed life camp for the expats in 8 months, complete with dormitories, high security fencing, potable water and sewage treatment, canteen, laundry, clinic, recreation facilities, etc. Subsequently managed the camp in delicate 2006 Niger Delta environment. - Preserved secure and peaceful site at all times, including when 4-day strike imposed workers lock-out. Maintained good collaborative relations with the Bonny communities. - Directed the construction, including: + River dredging and site reclamation/backfilling + Wharf/jetty construction for material supply + Deep piles driving into the ground (1000 concrete piles) + Placement of 7000 m3 of reinforced concrete (foundations, building & structural) + Heavy equipment lifts (up to 300 T) and pipe racks erection + Piping fabrication and installation (70,000 inch.dia welding), incl. 12 hot taps tie-ins to live LPG piping, in adjacent gas plant. + Erection of a 300,000 bbl floating roof tank (for pentanes)