Special Ambient Temperature Considerations

Cold Start Procedure:

If performing a cold-start of QuickTrip in very cold ambient environment conditions 

(temperatures between -40 °C to +15 °C), both the hydraulic oil within the QuickTrip manifold and the

QuickTrip manifold itself

must undergo a warmup procedure prior to starting the turbine to ensure the QuickTrip will operate

within specified performance limits. In particular, slew open times increase at lower hydraulic fluid

temperatures due to the higher viscosity (lower fluidity) of the hydraulic oil.

Before starting the QuickTrip, follow the warm-up procedure below:

1. De-energize all QuickTrip modules (valves should be open).

2. Start flow of warm hydraulic fluid through QuickTrip such that the temperature of the oil flowing from

the drain side of QuickTrip is at or above +15 °C.

3. Allow the warm hydraulic fluid to flow through QuickTrip for at least 30 minutes, while maintaining the

temperature at the drain side of QuickTrip at or above +15 °C.

4. Energize all QuickTrip modules.

5. Use the ProTechTPS to run an auto sequence test on QuickTrip (sequentially de-energizing and re

energizing each channel individually).

6. After the auto sequence test is complete, check the trip time log and verify each QuickTrip module

tripped in less than 50 ms.

7. If QuickTrip is to be operated continuously in very cold ambient environment conditions, the hydraulic

oil temperature flowing from the drain side of QuickTrip must be continuously maintained above +15°C.

8. Alternate methods of heating/insulating the QuickTrip and the hydraulic fluid lines upstream from

QuickTrip in very cold ambient environment conditions are recommended and might include the use

of heat tape, heat blankets and insulation.

Manually Stroking QuickTrip Using ProTechTPS (powered)

Manually stroking valve using ProTechTPS procedure:

1. If QuickTrip is in a run state, as indicated by a green LED as viewed through the sight glass,

QuickTrip may be manually tripped by de-energizing the ProTechTPS interposing relay to initiate a

trip. This may be done by using the Temporary Overspeed Setpoint Test (see ProTechTPS product

manual for more detailed instructions on this function).

2. If QuickTrip is in a trip state, as indicated by a red LED as viewed through the sight glass, QuickTrip

may be energized to close by activating the ProTechTPS interposing relay to initiate a run state. This

may be done by pressing the RESET button on the front panel of the ProTechTPS (see the

ProTechTPS product manual if module does not reset when the RESET button is pressed).

The user is permitted to replace some components of the QuickTrip in turbine shutdown conditions. The

user is also permitted to replace some components of the QuickTrip during normal turbine operation

conditions. The replacement components must be Woodward recommended products. Only this

guarantees full component compatibility and functionality. All safety instructions and detailed procedures

from this manual must be followed.

Hardware Replacement

The user is permitted to replace some components of the QuickTrip in turbine shutdown conditions. The

user is also permitted to replace some components of the QuickTrip during normal turbine operation

conditions. The replacement components must be Woodward recommended products. Only this

guarantees full component compatibility and functionality. All safety instructions and detailed procedures

from this manual must be followed.

Service and Replacement Parts:

• Service Manual (26842) – Consult Woodward distributor for part number

• Solenoid – On-line replaceable. Consult local Woodward distributor or service manual for part number

• Electronics module (PCBA) – On-line replaceable. Consult local Woodward distributor or service manual

for part number

• Return Spring – Consult local Woodward distributor or service manual for part number

• Sight Window – On-line replaceable. Consult local Woodward distributor or service manual for

part number

• Top Cover – On-Line replaceable. Consult local Woodward distributor or service manual for part number

• Bottom Cover – Consult local Woodward distributor or service manual for part number

• Interface Seals Kit(s) – Consult local Woodward distributor or service manual for part number

• Woodward Field Repair Tools Kit – Consult Woodward distributor for part number.

Manually Stroking QuickTrip (powered)

Manually Stroking Valve Procedure:

1. To manually stroke the QuickTrip valve, the actuators must be powered with 24 VDC. Make sure the

power supply is connected and operating while performing this procedure. This can be verified by

viewing the LED status through the sight window on top of the valve. One or two blue LED’s indicate

that the power supply is connected and is turned on.

2. If QuickTrip is in a run state, as indicated by a green LED as viewed through the sight glass,

QuickTrip may be manually tripped either by de-energizing the logic solver interposing relay to initiate

a trip state or by tripping the breaker to the Control In discrete input terminals on the QuickTrip

electronics module (terminals 5 and 6 of TB2).

3. If QuickTrip is in a trip state, as indicated by a red as LED viewed through the sight glass, QuickTrip

may be energized to close either by activating the logic solver interposing relay to initiate a run state

or by supplying a separate 24 VDC input to the Control In terminals on the QuickTrip electronics

module (terminals 5 and 6 of TB2).

WOODWARD | INDUSTRIAL TURBOMACHINERY SYSTEMS

PRODUCT FEATURES

Æ Dirt-tolerant design (25lb rotary chip shear force)

Æ Self-cleaning valve design (rotary solenoids)

Æ Fast trip times (< 50 ms solenoid action)

Æ Increased reliability (2-out-of-3 voting design)

Æ Repairable online

Æ Testable on-line

Æ Safety certified for use in IEC61508 SIL-3 systems

Æ API-670 Compliant

Æ Local & remote position indications

Æ Compact size

Æ Certified for hazardous locations

The QuickTrip trip block assembly is designed for use in steam, gas, and hydro

turbine shutdown systems for quick and reliable dumping of the turbine’s trip oil

header. This integrated trip block assembly is intended for use on mechanical-drive

or generator-drive steam turbines that use low pressure (5–25 bar / 73–363 psi)

hydraulic trip oil headers.

The QuickTrip’s fault tolerant design makes it ideal for critical steam turbine

applications, where turbine up-time and availability are essential. This trip block

assembly’s 2-out-of-3 voting design provides users with a very high level of system

reliability as well as compliance with industry standard API-670.

The QuickTrip is certified for use in IEC61508 based turbine safety systems, and

when paired with the Woodward ProTechTPS, can be applied into systems that

require a “Safety Integrity Level – 3” rating or below.