Emergency Shutdown
Systems (ESS)

• ✓ Main Engine Emergency Shutdown – MAN B&W, Wärtsilä, Sulzer, Mitsubishi
• ✓ Auxiliary & Generator Engine Shutdown – Caterpillar, MTU, Yanmar, ABC, Daihatsu
• ✓ Fuel Valve Isolation Systems – solenoid valves, hydraulic actuators
• ✓ Emergency Shutdown Buttons (ESD) – bridge, ECR, local panels
• ✓ Pneumatic Shutdown Systems – air start line isolation, overspeed trip
• ✓ Hydraulic Shutdown Systems – fuel rack control, stop cylinders
• ✓ Overspeed Protection Systems – mechanical & electronic overspeed trips
• ✓ Safety Automation Logic – PLC-based ESD, relay logic
• ✓ Integration with Fire & Gas Detection – ESD from fire alarm
• ✓ Remote Shutdown Monitoring – IAS, PMS, SCADA integration
• ✓ Class Compliance – SOLAS, ABS, DNV, LR, BV, RINA
• ✓ Retrofit of Legacy Shutdown Systems – obsolete component replacement

Shutdown actuators & valves

• ✓ Fuel shutoff solenoids – ASCO, Danfoss, Parker, Bosch, Rexroth
• ✓ Pneumatic shutdown cylinders – for fuel rack control
• ✓ Hydraulic stop cylinders – for large bore engines
• ✓ Air start line isolation valves – prevent starting after shutdown
• ✓ Overspeed trip mechanisms – mechanical (Woodward, Heinzmann) & electronic
• ✓ Governor mounted shutdown – UG, PGA, ProAct with solenoid
• ✓ Fuel rack position sensors – feedback for shutdown confirmation
• ✓ Emergency stop pull cables – manual mechanical shutdown

ESD control & monitoring

• ✓ Emergency shutdown pushbuttons – red mushroom head, twist release
• ✓ ESD relay logic – safety relays, Pilz, Siemens, ABB
• ✓ PLC-based ESD systems – Siemens S7-1500F, Rockwell GuardLogix, Mitsubishi
• ✓ ESD indication panels – bridge, ECR, local status
• ✓ Overspeed protection devices – Woodward ProTech, 2301, 505/505E
• ✓ Speed sensors for overspeed – magnetic pickups, proximity sensors
• ✓ Integration with fire alarm system – ESD from fire detection
• ✓ Remote ESD monitoring – via IAS/PMS/SCADA

Fire alarm system integration

• ✓ Integration with fire alarm panels – Consilium, Autronica, Siemens, Honeywell, Notifier
• ✓ Engine room fire detection – smoke, heat, flame detectors
• ✓ Fire damper & ventilation shutdown – coordinated with engine shutdown
• ✓ Fuel valve isolation on fire – remote solenoid activation
• ✓ Emergency generator shutdown – on fire in genset room
• ✓ Local & remote ESD reset – after fire event

Gas detection & hazardous area shutdown

• ✓ Gas detection systems – for LNG, LPG, fuel gas
• ✓ Gas engine shutdown on gas leak – spark ignition engines
• ✓ Ventilation shutdown – on gas detection
• ✓ ESD for dual-fuel engines – MAN, Wärtsilä DF
• ✓ Hazardous area classification – ATEX, IECEx shutdown devices
• ✓ Gas detector makes – Drager, MSA, Honeywell, Riken Keiki

• ✓ Legacy relay-based ESD replacement – with safety PLC or modern relay modules
• ✓ Overspeed system upgrade – mechanical to electronic (Woodward ProTech)
• ✓ Fuel solenoid valve retrofit – for obsolete pneumatic/hydraulic systems
• ✓ ESD pushbutton replacement – marine grade, IP66, with indication
• ✓ Integration with new IAS/PMS – Modbus, Profibus for ESD status
• ✓ Fire alarm to ESD interface upgrade – adding safety relays
• ✓ ESD system testing & certification – class survey, SIL validation
• ✓ Shutdown logic reprogramming – PLC software modification
• ✓ Emergency shutdown troubleshooting – on-site diagnostics, fault finding
• ✓ Spare parts supply – for all major ESD makes (Woodward, Pilz, Siemens, ABB)
• ✓ Class approval support – ABS, DNV, LR, BV, RINA, NK
• ✓ ESD system documentation update – schematics, logic diagrams, manuals