Inspection of generator end bells in their installed condition

摘要

Interest in evaluating the condition of generator end bells is the result of reports by leading generator manufacturers on the incidence of stress corrosion cracking of generator end bells made of X 55 MnC (N) 18K and X 40 MnCr 18. KEMA (of theNetherlands) has developed a technique for the measurement of generator end bells, whereby the rotor does not have to be removed first. Fracture mechanisms calculations provide the evaluation of the non-homogeneous spots discovered.