600+
safety projects
24/7
emergency response
SIL
certified engineers
19+
years avg experience

🛡️ safety interlock systems

ESD · PSD · F&G · Overspeed · Bearing Protection

  • ✓ Emergency Shutdown Systems (ESD) – Machinery & Process
  • ✓ Process Shutdown Systems (PSD) – Cargo & Marine Processes
  • ✓ Fire & Gas Integrated Shutdown Systems
  • ✓ Engine Overspeed Protection Systems
  • ✓ Turbocharger Surge & Overspeed Protection
  • ✓ Bearing Temperature Interlocks (RTD / Thermocouple)
  • ✓ Crankcase Oil Mist Detection Interlocks
  • ✓ Vibration Monitoring & Shutdown Systems
  • ✓ Pressure Safety High/Low Interlocks
  • ✓ Level Safety High/High (Overfill Protection) Systems
  • ✓ Burner Management System (BMS) Safety Interlocks
  • ✓ Generator Protection & Trip Systems
  • ✓ Emergency Generator Auto-start Interlocks
  • ✓ Valve Position Interlock Systems
  • ✓ Door / Hatch Open Interlocks for Hazardous Areas

⚠️ emergency shutdown

ESD · PSD · F&G Integration

ESD System Services

  • ✓ ESD Logic Solver Programming (Siemens, ABB, Honeywell, HIMA)
  • ✓ Cause & Effect Diagram Verification
  • ✓ ESD Valve Actuator Testing (Partial Stroke, Full Stroke)
  • ✓ Emergency Shutdown Pushbutton Stations
  • ✓ ESD Reset & Bypass Management
  • ✓ Fire Damper Interlock Testing
  • ✓ Ventilation Shutdown Integration
  • ✓ Fuel Valve Shutdown Testing
  • ✓ ESD System Retrofit & Upgrade

Specific Vessel ESD Experience

  • ✓ VLCCs (Hull 1180-1195) – ESD logic upgrade, 64 I/O
  • ✓ LNG Carriers – Moss type – ESD valve testing
  • ✓ FPSO Cidade de Itaguaí – F&G/ESD integration
  • ✓ Drillship DS-12 – BOP ESD interlock system
  • ✓ Samsung 96K LPG – cargo ESD overhaul
  • ✓ Maersk Triple-E – main engine ESD testing
  • ✓ Suezmax Tankers – inert gas ESD refurbishment

⚙️ engine safety & protection

Overspeed · OMD · Bearing Temp · Vibration

Main & Aux Engine Protection

  • ✓ Engine Overspeed Protection Systems (mech & electronic)
  • ✓ Turbocharger Overspeed & Surge Protection
  • ✓ Crankcase Oil Mist Detection (OMD) – Schaller, Graviner
  • ✓ Bearing Temperature Monitoring (RTD, Pt100) with trip
  • ✓ Cylinder Exhaust Gas Temperature High Trip
  • ✓ Jacket Cooling Water Pressure/Temp Interlocks
  • ✓ Lube Oil Pressure Low Shutdown
  • ✓ Vibration Monitoring Systems (B&K, Bentley Nevada)
  • ✓ Engine Slowdown & Shutdown Logic

Specific Engine Models

  • ✓ MAN B&W MC/ME Series – overspeed & protection
  • ✓ Wärtsilä RT-flex / X-series – safety interlocks
  • ✓ Sulzer RTA – engine protection systems
  • ✓ Mitsubishi UE – overspeed testing
  • ✓ Caterpillar / MAK – auxiliary engine safety
  • ✓ Yanmar / Daihatsu – generator protection
  • ✓ Bergen / Rolls-Royce – Bearing temp interlock

⛽ process safety & cargo

Overfill · High-High Level · Pressure Safety

Cargo & Tank Safety

  • ✓ Tank High-High Level Shutdown (Overfill Protection)
  • ✓ Cargo Valve Position Interlocks (VRCS)
  • ✓ Inert Gas System Pressure Interlocks
  • ✓ Deck Water Seal Low Level Shutdown
  • ✓ P/V Breaker Vacuum/Pressure Trip
  • ✓ Cargo Pump Emergency Shutdown
  • ✓ ODME Overboard Valve Interlock
  • ✓ Bilge Alarm 15ppm Shutdown Interlock

Vessel-Specific Experience

  • ✓ Suezmax Tankers – overfill protection system (Saab, Emerson)
  • ✓ VLCCs – inert gas pressure interlock calibration
  • ✓ LNG Carriers – tank high-high level (Honeywell)
  • ✓ Chemical Tankers – cargo pump ESD integration
  • ✓ FPSO – process safety shutdown testing
  • ✓ LPG Carriers – pressure safety valve interlocks

🔥 fire & gas integration

F&G · Deluge · FM-200 · CO2

Fire & Gas Interlocks

  • ✓ Fire Detection System Integration to ESD
  • ✓ Gas Detection (combustible, H2S, O2) Shutdown Interlocks
  • ✓ Deluge / Sprinkler Activation Interlocks
  • ✓ FM-200 / CO2 Release Interlocks (ventilation shutdown)
  • ✓ Fire Damper Position Interlocks
  • ✓ HVAC Shutdown on Fire/Gas Detection
  • ✓ Fuel Shutdown on Fire Detection

System Brands & Vessels

  • ✓ Consilium, Autronica, Tyco, Kidde systems
  • ✓ Drillship DS-12 – F&G to ESD integration
  • ✓ FPSO Cidade de Itaguaí – gas detection interlocks
  • ✓ MSC Gülsün – fire damper testing
  • ✓ Maersk Triple-E – CO2 release interlock

📊 SIL assessment

SIL 1 · SIL 2 · SIL 3 · Safety Lifecycle

  • ✓ SIL Determination & Target SIL Assignment
  • ✓ Safety Requirements Specification (SRS) Development
  • ✓ SIL Verification (PFDavg, HFT, SFF calculations)
  • ✓ Cause & Effect Diagram Review & Update
  • ✓ Safety Logic Solver Validation (IEC 61511/61508)
  • ✓ Proof Test Procedure Development
  • ✓ SIL 2 / SIL 3 System Integration Support
  • ✓ Functional Safety Assessment (FSA)
  • ✓ SIL Certified Engineers on Team (TÜV, CFSE)

🔧 safety components

ESD Valves · Actuators · Sensors · Logic Solvers

Logic Solvers & PLCs

  • ✓ HIMA (HIMax, HIMatrix) – safety PLC
  • ✓ Siemens S7-400F / S7-1500F
  • ✓ ABB AC500-S / 800xA High Integrity
  • ✓ Honeywell Safety Manager / FSC
  • ✓ Triconex (Schneider) – TMR systems
  • ✓ Rockwell Automation (GuardLogix)
  • ✓ Yokogawa ProSafe-RS

Field Devices

  • ✓ ESD Valves – Rotork, Auma, Bernard (SIL rated)
  • ✓ Solenoid Valves – ASCO, Norgren, Bürkert
  • ✓ Pressure Switches – SOR, United Electric, Danfoss
  • ✓ Temperature Sensors – Pt100, thermocouples
  • ✓ Level Switches – Magnetrol, KSR, Mobrey
  • ✓ Speed Sensors – Jaquet, Rexnord, Dynalco
  • ✓ Vibration Probes – Bentley Nevada, B&K, Metrix
  • ✓ Oil Mist Detectors – Schaller, Graviner, Visatron

👥 experienced team

Our Safety Engineers

Team Qualifications

  • Lead Safety Engineer: 22 years (HIMA, Triconex, SIL assessment)
  • ESD/PLC Specialist: 19 years (Siemens, ABB, Honeywell)
  • Fire & Gas Engineer: 17 years (Autronica, Consilium, Tyco)
  • Field Safety Technician: 20 years (valve testing, sensors)
  • SIL Assessment Lead: TÜV Functional Safety Engineer
  • Marine Safety Inspector: 18 years (ESD class survey support)

Recent Vessel Projects

  • ✓ Maersk Triple-E (3 vessels) – ESD valve testing
  • ✓ MSC Gülsün – F&G integration to ESD
  • ✓ VLCC (Hull 1185-1195) – overspeed protection calibration
  • ✓ Suezmax Tankers (5 vessels) – overfill interlock upgrade
  • ✓ Samsung 96K LPG – cargo ESD refurbishment
  • ✓ Hoegh LNG – bearing temp interlock calibration
  • ✓ Drillship DS-12 – BOP ESD logic verification
  • ✓ FPSO Cidade de Itaguaí – SIL 2 certification support

🌍 global safety coverage

Vessels & Facilities We Serve

Vessel Types

  • ✓ VLCC / ULCC
  • ✓ Suezmax / Aframax
  • ✓ LNG / LPG Carriers
  • ✓ Container Ships (all sizes)
  • ✓ Bulk Carriers
  • ✓ FPSO / FSO
  • ✓ Drillships & Semi-sub
  • ✓ PSV / AHTS
  • ✓ Cruise / Passenger
  • ✓ Jack-up Rigs
  • ✓ Chemical Tankers
  • ✓ Navy / Coast Guard

Global Locations – 24/7

  • ✓ UAE (Dubai, Fujairah, Abu Dhabi)
  • ✓ Singapore / Malaysia
  • ✓ India (Mumbai, Kochi, Chennai)
  • ✓ Rotterdam / Amsterdam
  • ✓ Houston / Gulf of Mexico
  • ✓ Shanghai / Busan / Yokohama
  • ✓ Brazil (Rio, Santos)
  • ✓ West Africa (Lagos, Luanda)
  • ✓ Scandinavia (Oslo, Bergen)
  • ✓ Mediterranean (Piraeus, Genoa)
  • ✓ Suez / Gibraltar
  • ✓ Any port – worldwide

🛡️ 24/7 safety support

Safety interlock issues?
ESD system testing required?

Our experienced safety engineers (avg 19+ years) are ready to mobilize worldwide. We carry test equipment and spares for HIMA, Siemens, Triconex, Rotork, and more. Available for SIL assessment, ESD testing, class survey support, or emergency call-out – 24 hours a day, 365 days a year.

📞 +971 50 123 4567 | 📞 +65 6789 1234 | ✉️ safety@seanav.org | www.seanav.org