Power - Fossil/Hydropower

CCGT/Single Client Projects (SCPs)/Case Studies

TWI conducts short-term project work and longer term research and development for its Industrial Member companies for product innovation, and to improve efficiency in all aspects of joining technology. As a result, Members from all industrial sectors can introduce novel designs, new fabrication or inspection techniques in order to improve business profitability or to enhance product safety and reliability.

TWI Industrial Members can also identify and contact individual specialists at TWI for answers to technical enquiries via our Contacts Online facility.

Single Client Projects (SCPs)

To respect confidentiality, generic titles of selected projects are given below:

Fabrication

Weld procedure development of dissimilar metal joints
Examination of the feasibility of EB welding of 150 mm stainless steel shafts
Diffusion bonding and adhesive bonding of compact heat exchangers
Joining of oxide dispersion strengthened metals
Development programme for the flash welding of 12% Cr boiler tubing
Electron beam welding of steam turbine diaphragms

Repair and maintenance

Condition assessment of steam riser pipes
Heat affected zone simulation programme
Fracture toughness testing of steam riser pipe material
Assessment of friction weld quality for thick section boiler plate materials
Assessment of power station boiler header weld flaws
Examination of scaling on superheater tube support clip attachment weld
General fillet weld inspection development for internal attachments in boilers
Examination of a failed steam separator element
Boiler repair project - independent peer review
Ultrasonic defect growth monitoring inspections
Examination of a failed steam turbine generator outer casing
Non-destructive testing of large steam turbine rotors
Assessment of cracking in turbine valve chests
Development of low cycle fatigue test method for rotor blade slots
Examination of stress corrosion cracks in steam turbine rotors
Development and assessment of procedures for repair welding or pressure vessels and turbine rotor casings
Investigation of cracking in dissimilar metal welds
Failure investigation of brazed components
Customisation of RISKWISE for risk-based maintenance of power station boilers in USA
Review of risk-based inspection and maintenance (RBI/M) and fitness-for-service assessment methods
Training and supply of RISKWISE for risk-based maintenance of power station boilers in Japan
Cracking investigation in T91 tubing
Fitness for service assessment of pipe girth weld
Engineering criticality analysis of power distribution structures
Application of RISKWISE to HRSGs to extend outage intervals

Full list of non-nuclear single clients projects

Case studies:

These case studies were written in collaboration with the customer concerned.

Power - Fossil/Hydropower

CCGT/Single Client Projects (SCPs)/Case Studies

Single Client Projects (SCPs)

Repair and maintenance

Case studies:

Full list of non-nuclear power case studies