Convertor Hoods (1K44), Gas Tube (FT) boilers (1K46), FM boilers (1K239), FO boilers (1K2311), Struthers Wells type EOR boiler as defined by the existing specific referenced design standards, or support subsystems, equipment or components thereof, including pressure parts, cleaning systems, valves, controls or diagnostics, other than maintenance and operation services performed as part of overall facility operation and management contracts for domestic or foreign government agencies or entities (including but not limited to NNSA, NASA, DOD, DOE, as well as United Kingdom NDA or MOD sites). (f). Chemical looping conversion systems which are fueled by combustible fossil fuels (e.g., coal, coal slurry, oil or natural gas) and which produce an energy output of steam, CO2, H2 or syngas or support subsystems, equipment or components thereof, including fuel feed, pulverizers, reactors, pressure parts, air heaters, fans, boiler cleaning systems, ash systems, valves, controls or diagnostics, other than maintenance and operation services performed as part of overall facility operation and management contracts for domestic or foreign government agencies or entities (including but not limited to NNSA, NASA, DOD, DOE, as well as United Kingdom NDA or MOD sites). (g). Pulverized coal injection systems for use in connection with steel production or support subsystems, equipment or components thereof, including pulverizers, pressurization systems, tanks, valves, controls or diagnostics, other than maintenance and operation services performed as part of overall facility operation and management contracts for domestic or foreign government agencies or entities (including but not limited to NNSA, NASA, DOD, DOE, as well as United Kingdom NDA or MOD sites). (h). Heat transfer surface cleaning systems and support subsystems, equipment and components thereof (other than said systems related to or utilized in connection with nuclear fueled systems and expressly excluding nuclear steam generators), including sootblowers (air, steam, water or sonic), related valve or piping