Component:

• A welded construction HP rotor

Problem:

• Assessment of defects found in the welds and close to the bore

Solution:

• Sampling for chemical analysis, impact and creep testing
• Defect assessment in conformity with R5 methodology

Benefits:

• Confirmed that the materials composition was within specification
• Established the current impact and creep properties
• Life demonstrated to be inadequate under current operating conditions
• Restricted operating regime identified to give required remaining life