End of March 2025
| Chief Electrical Engineer, Class 1 | 3 |
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| Chief Electrical Engineer, Class 2 | 7 |
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| Chief Electrical Engineer, Class 3 | 30 |
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| Radiation Protection Supervisor, Class 1 | 32 |
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| Radiation Protection Supervisor, Class 2 | 50 |
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| Qualified Energy Manager (After the amendment in 2005) | 14 |
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| Qualified Energy Manager (Qualified Electricity Manager) | 7 |
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| Qualified Energy Manager (Qualified Heat Manager) | 7 |
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| Certified Measurer (General, Environmental, Density) | 1 |
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| Pollution Control Manager, Water Quality, Class 1-4 | 31 |
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| Pollution Control Manager (Class 1-4) | 34 |
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| Working Environment Measurement Expert, Class 1 | 19 |
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| Working Environment Measurement Expert, Class 2 | 8 |
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| ISO Machinery Condition Monitoring and Diagnostic Technician (Vibration) Category 1 | 16 |
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| ISO Machinery Condition Analyst (Vibration) Category II | 2 |
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| Chief Boiler/Turbine Engineer, Class 1 | 10 |
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| Boiler Engineer, Special Class | 3 |
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| Boiler Engineer, Class 1 | 61 |
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| Boiler Engineer, Class 2 | 232 |
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| Chemical Analysis Technician, Class 1 | 1 |
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| Chemical Analysis Technician, Class 2 | 6 |
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| Piping Work Execution Management Engineer, Class 1 | 2 |
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| Piping Work Execution Management Engineer, Class 2 | 2 |
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| Civil Work Execution Management Engineer, Class 1 | 5 |
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| Civil Work Execution Management Engineer, Class 2 (Civil) | 7 |
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| Electrical Work Execution Management Engineer, Class 1 | 10 |
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| Electrical Work Execution Management Engineer, Class 2 | 11 |
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| Authorized Architect, Class 2 | 2 |
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| High-Pressure Gas Production Safety Representative, Class A | 1 |
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| High-Pressure Gas Production Safety Representative, Class B Chemical / Mechanical | 67 |
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| High-Pressure Gas Production Safety Representative, Class C Chemical | 4 |
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| High-Pressure Gas Production Safety Representative, Class 1 Refrigeration | 15 |
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| High-Pressure Gas Production Safety Representative, Class 2 Refrigeration | 11 |
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| High-Pressure Gas Production Safety Representative, Class 3 Refrigeration | 40 |
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| Boiler Mechanic | 23 |
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| Fire Defense Equipment Officer, Class A, Type 1, 4, 5 | 21 |
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| Fire Defense Equipment Officer, Class B, Type 1-7 | 146 |
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| Septic Tank Manager | 48 |
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| Electrician, Class 1 | 22 |
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| Electrician, Class 2 | 141 |
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| Handling Poisonous Substances and Deleterious Substances Manager (General) | 28 |
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| Hazardous Materials Engineer, Class A | 26 |
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| Hazardous Materials Engineer, Class B, Type 1-6 | 703 |
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| Hazardous Materials Engineer, Class C | 48 |
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| Instrumentation Engineer, Class 2 | 1 |
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| Security Guard Training Supervisor | 10 |
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| High-Pressure Gas Sales Supervisor (Class 1 Sales) | 21 |
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| High-Pressure Gas Sales Supervisor (Class 2 Sales) | 2 |
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| Facility Security Operation, Class 1 | 7 |
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