Williams Industrial Services Group Inc. provides construction, maintenance, and support services to energy, power, and industrial end markets in the United States and Canada. The company offers maintenance, modification, repair, and other capital project services to extend life cycles of nuclear, paper, chemical, fossil fuel, industrial gas, hydro power, natural gas, municipal water and wastewater, and other facilities. It also provides cleaning, surface preparation, coatings application, quality control, and inspection testing services for nuclear and fossil fuel power plants, industrial facilities, and petrochemical plants; industrial insulation services for power generation installations; and abatement services for the removal of asbestos and heavy metal based coatings, such as lead paint. In addition, the company offers oil and gas construction and maintenance services; services to convert analog control systems to digital control systems to enhance reliability and accuracy, and increase output of operating plants; and nuclear decommissioning services. Further, it installs, maintains, and modifies water and wastewater systems, including piping, pumping, storage tanks, and other related facilities; and replaces, repairs, and upgrades industrial facility roofing systems at pulp and paper manufacturing facilities and nuclear power plants. Williams Industrial Services Group Inc. markets its services through sales and marketing personnel, as well as its on-site operations personnel. The company was formerly known as Global Power Equipment Group Inc. and changed its name to Williams Industrial Services Group Inc. in June 2018. Williams Industrial Services Group Inc. was incorporated in 1998 and is headquartered in Tucker, Georgia.