The Woodward QuickTrip is an IEC 61508 safety-certified electro-hydraulic trip block assembly designed for quick and reliable dumping of steam turbine trip oil headers. Its 2-out-of-3 voting design with three patented dirt-tolerant rotary valves provides API 670 compliance, nuisance trip prevention, and online component replacement while the turbine is operating.
Key Features
Design
- IEC 61508 safety certified trip block assembly
- 2-out-of-3 voting architecture — compliant with API 670, API 612, API 611
- Three patented, dirt-tolerant rotary solenoid valves
- Trip solenoid response time under 50 milliseconds
- 25 lb chip shear force for self-cleaning port design
- Corrosion-resistant materials for dirty or contaminated oil
- Compact package for mounting near turbine and trip & throttle valve
Operation & Testing
- Online testing of each trip leg independently (with ProTech-TPS)
- Online component replacement (solenoid, electrical module, driver, wiring)
- LED position indicators (run & trip) for local status verification
- Integrated limit switches for DCS health and status validation
- Redundant 24 Vdc power inputs per solenoid
- Three independent discrete shutdown command inputs
- Certified for Zone-1/Zone-2 (Class 1/Class 2) hazardous locations
- Factory assembled and tested — reduces installation and commissioning time
Applications
- Steam turbine trip oil header dump systems
- Mechanical-drive and generator-drive steam turbines
- Low-pressure hydraulic trip oil headers (5–25 bar / 73–363 psi)
- Critical turbine applications requiring API 670 5th edition compliance
- IEC 61508 SIL-3 systems when paired with ProTech-TPS
- New installations and retrofit turbine packages
Drake Controls Services
Drake Controls is a Woodward Authorized Distributor. We supply QuickTrip assemblies and complete turbine safety system packages including the ProTech-GII overspeed device and ProTech-TPS logic solver. Drake’s field service team handles safety system installation, commissioning, and proof testing.