This trip block assembly is housed in a fully integrated package, which includes three patented dirt

tolerant rotary trip valves. These valves are connected to provide redundant two-out-of-three based

voting to ensure that a failure of any one component (electronics module, valve, wiring, connector, etc.)

does not result in a nuisance trip condition. The QuickTrip’s modular design also allows users to replace

critical components (electrical module, solenoid, wiring, etc.) while the turbine is operating on-line.

Designed to quickly and reliably bleed off trip oil header pressure, at least two of the QuickTrip’s three

rotary solenoid valves must be de-energized to open a bleed path from the trip oil header to system

drain.

The QuickTrip accepts one or two (redundant) 24 VDC power sources to power each solenoid, and uses

three independent discrete input shutdown commands from a safety logic solver like the Woodward

ProTechTPS (independent voted models) to test and control each solenoid valve.

Because gas and steam turbines are often used in hazardous locations where flammable gases may be

present, the QuickTrip is designed to be mounted next to the turbine and is certified for use in Zone-1 or

Zone-2 (Class 1 or Class 2) hazardous locations.

When packaged with a Woodward ProTechTPS safety logic solver, the ProTechTPS performs the

required routine safety system diagnostic tests to verify unit operation while the turbine is on-line. The

proof test trip time response monitoring and logging ensures the total turbine safety system can respond

fast enough to safely shutdown the turbine.

The total installed cost for this fully integrated trip block assembly is low because it has been completely

assembled and tested at the factory. This greatly reduces OEM and end-user fabrication time, installation

time, and testing time.