941 16 | BABBITING SERVICES, INDUSTRIAL BEARING |
941 21 | BLADE MAINTENANCE AND REPAIR, ELECTRIC POWER GENERATOR |
941 25 | BOILER MAINTENANCE AND REPAIR, STEAM, INCLUDING TESTING SERVICES, (SEE 941-56 FOR HYDROSTATIC TESTING) |
941 27 | BURNER MAINTENANCE AND REPAIR |
941 30 | CATHODIC PROTECTION SERVICES |
941 34 | CIRCUIT BREAKER SERVICES, AIR |
941 39 | DIGITAL AND ANALOG TESTING EQUIPMENT MAINTENANCE AND REPAIR |
941 45 | GAS CHROMATAGH SYSTEMS MAINTENANCE AND REPAIR |
941 51 | HEAT EXCHANGER MAINTENANCE AND REPAIR |
941 52 | HEATING, STEAM, EQUIPMENT MAINTENANCE AND REPAIR |
941 55 | HVAC SYSTEMS, POWER PLANT, MAINTENANCE AND REPAIR |
941 56 | HYDROSTATIC TESTING SERVICES, BOILER |
941 59 | INSPECTION AND EXAMINATION SERVICES, NON-DESTRUCTIVE, ULTRASONIC TESTING, DYE PENETRANT TESTING, RADIOGRAPHY, ETC. |
941 63 | MONITORING SERVICES, POWER GENERATION |
941 64 | MOTORS, VERTICAL, MAINTENANCE AND REPAIR |
941 69 | PIPELINE PRESSURE FLUSHING SERVICES |
941 72 | POWER GENERATING AND TRANSMITTING CONTROL SYSTEM MAINTENANCE AND REPAIR SERVICES |
941 73 | POWER PLANT EQUIPMENT MAINTENANCE AND REPAIR (NOT OTHERWISE CLASSIFIED) |
941 77 | REFRACTORY SERVICES |
941 82 | TEFLON COATING AND LINING SERVICES |
941 85 | TUBE PRESSURE TESTING SERVICES |
941 87 | TURBINES, GAS, MAINTENANCE AND REPAIR |
941 88 | TURBINES, STEAM, MAINTENANCE AND REPAIR |
941 91 | VALVES, CONTROL, FUEL MODULATION, ETC., MAINTENANCE AND REPAIR |