FROM LOGIC TO THE FIELD.

XELL controls the process.

WHAT WE MASTER

Complete lifecycle engineering of control systems — from design to commissioning, on the most critical projects in petrochemical and gas industries.

• DCS — Honeywell Experion PKS · Foxboro Evo Architecture · Migration
• PLC / SAFETY PLC — Schneider Modicon M580 · Tricon CX Siemens S7-400/1500 · ABB AC500 Triconex TMC (ESD/SIS) · SIL
• SCADA & HMI — Wonderware InTouch · iFIX Siemens WinCC · FactoryTalk View SE Ignition · High-availability operator interfaces
• SIS / FGS — IEC 61511 · SIL 1/2/3 Fire & Gas Systems · ESD BMS · Safety lifecycle management
• ROTATING EQUIPMENT — Compressors · Turbines · Pumps Bently Nevada · API 670/674/677 Control & protection packages
• PROJECT ENGINEERING — FEED · Detailed Design Cause & Effect · HAZOP review FAT/SAT · Commissioning · Startup

COMPLETED PROJECTS

• Sustainable Aviation Fuel Platform

  Automation and safety system implementation for TotalEnergies' new Sustainable Aviation Fuel production platform. Control logic validation, safety sequences, and SNCC Foxboro integration.

  Schneider Electric — La Mède, France

• FSRU — DCS Communications Diagnostic

  Critical 2-week diagnostic intervention to resolve DCS communication failures on TotalEnergies' FSRU. Network analysis, firewall reconfiguration, VLAN optimization, and data mapping corrections across 8 subsystems.

  Schneider Electric — Le Havre, France

• Loading Depot Safety System Migration

  Complete migration of oil loading depot safety system from legacy Honeywell FSC to Schneider Electric Tricon CX. Functional analysis, reverse engineering, full reprogramming, HMI enhancement, FAT/SAT.

  TotalEnergies — La Mède, France

• Biorefinery Conversion Phoenix Project

  Technical assistance for TotalEnergies' La Mède refinery conversion into France's first large-scale biorefinery. Control system engineering, safety validation, commissioning, and cross-discipline coordination.

  TotalEnergies — La Mède, France

• CO₂ Compressor Commissioning

  Complete commissioning of MAN 7-stage high-speed centrifugal CO₂ compressor at Saudi Aramco's Hawiyah gas facility. Loop verification, anti-surge optimization, InTouch HMI development, and operator training.

  AviComp — Hawiyah, Saudi Arabia

+15

Years of field experience

+11

Projects delivered

5+

Countries of operation

0

LTI — HSE Culture

OUR APPROACH

A structured engineering methodology, from design basis review to field startup.

1. Analysis & Scoping — Basis of Design · HAZOP review · Functional requirements definition · Control and safety philosophy review
2. Engineering & Architecture — Cause & Effect Matrix · SIL Assessment / LOPA · IEC 61131-3 Programming · DCS/SIS Architecture · Control loops
3. Validation & Testing — Structured FAT · Interlock simulation · Loop check · Closed loops · Complete validation dossier
4. Commissioning & Support — Field SAT · Startup process · Operator training · Post-startup support · Corrective maintenance

They trust us

• Air Liquide
• TotalEnergies
• Schneider Electric
• AviComp
• Saudi Aramco
• Sonatrach
• Sifang

WHO WE ARE

XELL was born from a conviction: controlling an industrial process demands as much rigor as the process itself. Based in Martigues, at the heart of the Fos-Berre industrial basin, we work on the most critical projects in the oil, gas and process industries. MASE certified, we place HSE excellence at the core of every engagement.

INTERNATIONAL PRESENCE

• France — Europe —
• Algeria — North Africa —

• IEC 61511
• IEC 61131-3
• ISA-18.2
• IEC 62443
• API 670
• SIL 2/3
• MASE

ONGOING PROJECT? LET'S TALK.

XELL — Martigues, France · +33 4 86 37 24 58