Our Case Studies Stress corrosion cracking in low pressure turbine rotors

Power station steam turbines have a number of stages, which use steam of differing quality. Steam conditions within some of the low-pressure stages can leave turbine blade fixings susceptible to stress corrosion cracking. The regions susceptible to stress corrosion cracking are difficult to access for inspection. If unrevealed, this could potentially cause the loss of a section of the rotor and associated blades, which could result in significant plant damage and resulting down time for repairs. The client approached EASL to help reduce inspection intervals and thereby reduce outages. The client already used us as an established supplier and had worked closely with us in the past. The results generated by EASL were used to underwrite an inspection schedule for the turbines.

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