1. Dual-Hoist Synchronous Control

• CANopen Networked Drives:

  • Real-time load sharing (±0.5%)

  • Automatic torque compensation

• Redundant Measurement:

  • Absolute encoders (0.01° resolution)

  • Wire rope tension sensors

2. Submerged Service Package

• IP68 Components:

  • Stainless steel gears (1.4462)

  • Potting compound-sealed motors

• Cathodic Protection:

  • Impressed current system (DNV-RP-B401)

  • Sacrificial zinc anodes

3. Seismic Survival System

• Hydraulic Locking Pins: Engage during >0.3g ground acceleration

• Fail-Safe Braking:

  • Spring-applied hydraulic release

  • Mechanical ratchet backup

Structural Resilience Features

• Box Girder Design: S460ML steel (EN 10025) with Class C weld inspection

• Corrosion Protection:

  • 400μm DFT epoxy coating (ISO 12944 C5-M)

  • Anodic oxide aluminum walkways

• Flood Load Resistance:

  • CFD-validated hydrodynamic profile

  • 50kN/m² wave impact rating

► NORMAL OPERATION:  
   - Stepless gate positioning (0.01m/min precision)  
   - SCADA-integrated water level feedback  

► FLOOD EMERGENCY MODE:  
   - 200% overload capability (10min duration)  
   - Backup generator auto-connect  

► EARTHQUAKE SAFETY MODE:  
   - Auto-retract to park position  
   - Structural lock engagement within 3s  

• Gate Collision Avoidance: LiDAR + ultrasonic sensors

• Load Monitoring:

  • ±1% SWL accuracy with cut-off

  • Redundant strain gauge pairs

• Emergency Systems:

  • Manual hand pump lowering

  • Satellite comms for remote override

• Compliance:

  • EN 15011:2011 + A1

  • ISO 12482-1 fatigue standard

  • IEC 61508 SIL 3

Maintenance Engineering

• Underwater Service Kits:

  • ROV-compatible bearing replacement

  • Wet welding electrode provisions

• Predictive Diagnostics:

  • Vibration trend analysis (ISO 10816)

  • Oil moisture sensors

• Modular Components:

  • Hoist swap in <8 hours