Nuclear Plants/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:
- Validation of R5 for reheat cracks
- Study of phased array UT probes
- Contribution to the final summary report of the Network for Evaluating Structural Components (NESC1) - 1st project
- Phased array ultrasonic testing of fillet welds
- Reheat crack growth modelling
- Evaluation of Technical Advisory Group on Structural Integrity (TAGSI) definition of One-Set of the Upper Shelf Temperature (OUST)
- Further analysis of radiographic detection data
- Effect of penetrations and attachments on component integrity
- Interpretation of NESC1 results
- Ultrasonic sizing of rough defects
- Generic fillet weld inspection
- Diffusion bonding stellite to nimonic material
- Feasibility study of magneto strictive transducers
- Reactor pressure vessel supports assessment
- UT of stainless steel weldments
- Fatigue tests on welded austenitic stainless steel
- Fatigue crack growth in Monel 600
- An evaluation of risk-informed inspection and maintenance methods
- Assessment of fitness for service codes and guidelines
- Analysis of residual stress measurement data
- Toughness tests on bulk strain aged repair weld metal
- Toughness tests on dome plate core samples
- Statistical consultancy for blind trials nuclear station repair NDT
- Technical justification for nuclear station repair NDT
- Steam generator tube repairs
- Electro-slag welding investigation
- Welded on extensions to core samples
- Electron beam welding of Charpy specimens
- Investigation into repair of 304 stainless steel using friction method
- HVOF spraying of boron rich coatings onto wear plates
- CO 2 laser welding of hafnium
- Evaluation of Nd:YAG lasers for remote processing
- Nd:YAG laser welding of stainless steel
- Laser scabling of concrete
- Nd:YAG laser welding nickel 201 pipe
- Laser welding zircalloy supper grids
- Friction welding of valve inserts
- Friction seam welding
- Electron beam welding of uranium
- Modifying stainless steel TIG weld grain structure by ultrasound
- Moving contact arc welding (MCAW) - feasibility
- Resistance seam welding of stainless steels
- Welding thermocouples to monel pipe
Case studies:
These case studies were written in collaboration with the customer concerned.
- On-site service at short notice
- Tubestress measures residual stresses in parts that other equipment cannot reach
- Improved design for heat exchanger
- TWI assist nuclear boiler repair
- TWI helps to verify the reliability of radiography
- Measuring complex geometries for residual stress
- Electron beam welding of fuel bundles
Full list of nuclear power case studies
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