Princeton Junction, NJ – October, 2011 – MISTRAS Group, Inc.’s (NYSE:MG) Acoustic Combustion Turbine Monitoring System (ACTMS?) successfully detected and located an S1 vane crack in an F-class combustion turbine at a NextEra Energy Resources’ combined cycle generation facility.
Mid-compressor vane cracking has been recognized as an industry concern. MISTRAS’ ACTMS? detects and locates active stator blade cracking in the compressors of operating combustion turbines. Using noninvasive sensor mounts, the system is capable of detecting and identifying airfoil crack activity in the presence of normal turbine operational noise and conditions.

“We have found ACTMS to be effective in detecting stationary airfoil cracking on running combustion turbine compressors,” says Jim Keener, Vice President of Power Generation Technical Services for NextEra Energy.

NextEra Energy, Inc. intends to purchase additional MISTRAS ACTMS? units, adding to their current inventory of six installed systems.

NextEra Energy, Inc. is a leading clean energy company with 2010 revenues of more than $15 billion, nearly 43,000 megawatts of generating capacity, and approximately 15,000 employees in 28 states and Canada.