Increase maintenance intervals, monitor asset health, improve unit reliability and availability

Reliable operation of your steam turbine’s main stop and control valves (MSCVs) and combined reheat valves (CRVs) is critical for the safe, predictable, and high-performing operation of both your steam turbine and combined-cycle power plant.

Protect your steam turbine’s equipment by coupling hardware upgrades with advanced health monitoring analytics

Over the past 20 years, GE has been monitoring the health of its fleets, working with our users to get valuable insight and feedback, and making continuous improvements to our products. This effort has led to hardware and monitoring/analytics innovations that have produced a set of Digital Valve offerings that address common steam turbine valve-related maintenance issues, while helping to deliver a host of valuable benefits that aim to provide ROI in as few as two to three years. Digital Valves provide real-time turbine valve condition monitoring and diagnostic and prognostic analytics needed to reliably keep your plant running smoothly.

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Increase steam turbine reliability and availability up to 10 days per minor event*

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Extend maintenance intervals from 3 to up to 6 factored years

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Demonstrated payback in as few as 2-3 years

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Expect reduced valve testing requirements from daily to weekly 

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Implement a smarter, condition-based maintenance strategy

*Availability statistics apply to planned events only.

CONTACT GE TODAY

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Increase steam turbine reliability and availability up to 10 days per minor event*

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Extend maintenance intervals from 3 to up to 6 factored years

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See payback in as few as 2-3 years

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Reduce valve testing requirements from daily to weekly 

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Implement a smarter, condition-based maintenance strategy

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See Digital Valves in action

Get a quick introduction to Digital Valves, and see how you can get the most from your steam turbine.

Want to go deeper? Learn more about the benefits of Digital Valves.

What are Digital Valves?

We’ve blended a robust set of hardware upgrades with digital monitoring and analytics systems to help you move from reactive to predictive health monitoring technology for your plant. Our Digital Valve offerings consist of:

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Upgraded valve materials

With the Digital Valves offering, we’ve advanced our materials with improved oxidation resistance that can reduce oxidation rates by up to 3-4x, as well as potentially reduce the risk of mechanical binding or valve sticking.

Enhanced geometries

We’ve improved valve geometries to increase efficiency and to more effectively direct the steam flow and solid particulates (if any) away from the stop valve stem (a safety-critical component). This enhances the valve seating angle, directing any foreign particles in the steam flow away from the stem. Additionally, the pressure seal head has been produced with erosion-resistant materials to reduce particle velocities, protecting and shielding the stop valve stem from solid particle erosion (SPE). The pressure seal head also incorporates a patent-pending early warning system that can aid in the detection of any potential erosion that may occur—well before it becomes a forced outage risk.

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Sensors and instrumentation

Using existing and supplemental sensors coupled with proprietary digital and software algorithms, we can help you measure real-time critical operating parameters that can impact your valve’s safety, reliability, and performance.

Advanced monitoring

The user interface (UI) for Digital Valve analytics is a web-enabled portal that can be accessed from anywhere within your power plant’s internal network. From this UI, real-time (diagnostic) and predictive (prognostic) analytics display both the current and trended health of the critical components of the valve. This information is invaluable for quickly diagnosing valve-related issues found during operation, and is vital for making informed decisions on maintenance timing and planning. Combining this monitoring with the Digital Valve hardware can help customers move towards extended high pressure and reheat valve inspection and maintenance intervals.

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Help stop problems before they start

Digital Valves can help mitigate issues that can lead to prolonged maintenance outages as well as costly forced outages:

  • Casing cracks, which can occur at different valve body locations and cause emergent/unexpected valve repair work and forced outages
  • Solid particle erosion (SPE) that results from solid particles entrained in the steam flow, which impinge on the main stop valve stem, and can result in stem failure
  • Sticking, which happens as a result of oxidation and occurs when the stop valve is stuck in the open position, and can require an immediate forced outage

With Digital Valves, we can more confidently anticipate when potential events like these would occur by field deployment of analytics.

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See how Digital Valves could have saved a customer $2.2 million

What’s the true cost of not implementing advanced monitoring? Our infographic breaks down the cost of unplanned outages—and how our Digital Valves technology could help.

Keeping your steam turbine running

Digital Valve packages

Internals upgrade01
 
SCOPE
Replacement of valve internal components
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SCOPE
New valves and actuators
Internals upgrade
SCOPE : Replacement of valve internal components
Recommended for:
  • 7.5” and 9.25” with modern guided outlet valves with no major casing cracks
Software monitoring and diagnostics:
Digital Lite: Sensors and analytics with partial valve health monitoring
Full replacement
SCOPE : New valves and actuators
Recommended for:
  • Valves with >12 years in operation or with known SPE and/or casing crack issues
  • 9.25” lower chamber MSCVs
  • Replacement of CRV Links and lever hydraulics
Software monitoring and diagnostics:
Digital Lite: Full valve health monitoring package offering enhanced operational tracking, trending, and life monitoring for improved asset management

Keeping your steam turbine running

Digital Valve packages

SCOPE : Replacement of valve internal components
Recommended for:
  • 7.5” and 9.25” with modern guided outlet valves with no major casing cracks
Software monitoring and diagnostics:
Digital Lite: Sensors and analytics with partial valve health monitoring

SCOPE : New valves and actuators
Recommended for:
  • Valves with >12 years in operation or with known SPE and/or casing crack issues.
  • 9.25” lower chamber MSCVs.
  • Replacement of CRV Links and lever hydraulics.
Software monitoring and diagnostics:
Digital Lite: Full valve health monitoring package offering enhanced operational tracking, trending, and life monitoring for improved asset management
  Want to calculate your ROI?
You could see payback in as few as 2-3 years. Contact us today to get a personalized calculation for your plant.