The SpiralWeld remanufacturing benefit for CCGT power plants
SpiralWeld has a wealth of experience in the CCGT sector and has supported over 60% of the UK CCGT operating installed base with over 100 different component solutions. (Click to download our flyer)
Each solution is developed to address a specific customer need and we are able to draw upon our knowledge and expertise to develop bespoke solutions for your components.
Customer operating data has shown CCGT components that have undergone SpiralWeld Remanufacture+ recovery have performed better than standard OEM parts, A component remanufactured by SpiralWeld will:
- Give you confidence in reliability during operation
- Reduce the cost of your replacement parts
- Reduce plant downtime
- Reduce spare inventory
If you have a specific requirement and want to see if SpiralWeld could provide the right solution, please contact us and the right member of our expert team will get in touch.
Case studies: SpiralWeld experience within a typical combined cycle gas turbine system
#1 Fuel Gas Preheater Valve
Purpose
Regulate and control gas pressure and flow through fuel gas preheater system.
SpiralWeld ReManufacture+ Solutions
Plug: Perforated skirt and control seat upgrade with our advanced cobalt alloy
#2 HP Bypass Valves
Purpose
Maintain and control main line HP steam pressure during start up or a trip event, dumping steam to the condenser.
SpiralWeld ReManufacture Solutions
Main plug: control seat, perforated skirt & pilot seat upgrade
Pilot plug: stem recovery with parent materials, control seat upgrade
Fixed seat: Manufacture+ and seat upgrade
New component Manufacture+ available should condition be beyond ReManufacture
#3 IP Bypass Valves
Purpose
Maintain and control IP steam pressure to IP turbine stage
SpiralWeld ReManufacture+ Solutions
Main plug: control seat, perforated skirt & pilot seat upgrade with our advanced cobalt alloy
Pilot plug: stem recovery with parent materials, control seat upgrade with our advanced cobalt alloy
Fixed seat: seat upgrade with our advanced cobalt alloy
#4 HP Feed Water Regulator
Purpose
Maintain and control feed water flow into HP side of HRSG and steam header
SpiralWeld ReManufacture+ Solutions
Plug & stem: control seat upgrade with our advanced cobalt alloy
Fixed seats: seat upgrade with our advanced cobalt alloy
Drag valve: clean and reconstitute labyrinthine stack plates
New component Manufacture+ available should condition be beyond ReManufacture
#5 IP Feed Water Regulator
Purpose
Maintain and control feed water flow into IP side of HRSG and steam header
SpiralWeld ReManufacture+ Solutions
Plug & stem: control seat upgrade with our advanced cobalt alloy
Fixed seats: seat upgrade with our advanced cobalt alloy
Drag valve: clean and reconstitute labyrinthine stack plates
New component Manufacture+ available should condition be beyond ReManufacture
#6 LP Feed Water Regulator
Purpose
Maintain and control feed water flow into LP side of HRSG and steam header
SpiralWeld ReManufacture+ Solutions
Plug & stem: control seat upgrade with our advanced cobalt alloy
Fixed seats: seat upgrade with our advanced cobalt alloy
Drag valve: clean and reconstitute labyrinthine stack plates
New component Manufacture+ available should condition be beyond ReManufacture
Other Feed Water Regulator Designs
Purpose
Maintain and control feed water flow into HRSG and steam header
SpiralWeld ReManufacture+ Solutions
Plug & stem: control seat upgrade with our advanced cobalt alloy
Fixed seats: seat upgrade with our advanced cobalt alloy
Cage trim: bore surface upgrade with our advanced cobalt alloy
New component Manufacture+ available should condition be beyond ReManufacture
#7 Minimum flow valve (Schroedahl type)
Purpose
Maintain and control feed water pressure at low operating flow during startup
SpiralWeld ReManufacture+ Solutions
Control head: bore, lever arm/pin, piston upgrade with our advanced cobalt alloy
Vortex bush: seat upgrade with our advanced cobalt alloy
Vortex plug: washer/bush and seat upgrade with our advanced cobalt alloy
Nozzle: upgrade design with our advanced cobalt alloy
Manufacture+ of all parts featuring upgraded control and operating surfaces providing enhanced service life
#8 33% Feed Water Regulator
Purpose
Provide initial feed water flow into HRSG during start up activites
SpiralWeld™ ReManufacture+ Solutions
Main plug: control seat upgrade with our advanced cobalt alloy
Pilot plug & stem: control seat upgrade with our advanced cobalt alloy
Fixed seats: seat upgrade with our advanced cobalt alloy
New component Manufacture+ available should condition be beyond ReManufacture
#9 100% Feed Water Regulator
Purpose
Maintain and control feed water flow and pressure into HRSG during full load operation
SpiralWeld™ ReManufacture+ Solutions
Main plug: control seat upgrade with our advanced cobalt alloy
Pilot plug & stem: control seat upgrade with our advanced cobalt alloy
Fixed seats: seat upgrade with our advanced cobalt alloy
New component Manufacture+ available should condition be beyond ReManufacture
#10 Condensate Discharge
Purpose
Maintain and control return of condensate from condeser back to feed water system
SpiralWeld ReManufacture+ Solutions
Main plug: control seat upgrade with our advanced cobalt alloy
Fixed seats: seat upgrade with our advanced cobalt alloy
New component Manufacture+ available should condition be beyond ReManufacture
