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Public qualifications

(As of March 2023)

Classification Qualification name Number of people
Construction industry qualifications Second Class Architect 3
First Class Plumbing Work Operation and Management Engineer 103
Second Class Plumbing Work Operation and Management Engineer 73
Second Class Civil Engineering Work Operation and Management Engineer 4
First Class Electrical Work Operation and Management Engineer 30
Second Class Electrical Work Operation and Management Engineer 38
Training Course for Managing Engineer 64
Certificate of Qualification for Managing Engineer (Plumbing Business) 68
Certificate of Qualification for Managing Engineer (Machinery, Equipment, and Facility Business) 1
Certificate of Qualification for Managing Engineer (Electrical Contracting Business) 17
Electrical qualifications 1st Class Qualified Certified Electrician 30
2nd Class Qualified Certified Electrician 115
2rd Class Electric Works Specialist 2
3rd Class Electric Works Specialist 12
Fire fighting qualifications Class A Hazardous Materials Engineer's License 17
Class B Hazardous Materials Engineer's License: Group 1 46
Class B Hazardous Materials Engineer's License: Group 2 42
Class B Hazardous Materials Engineer's License: Group 3 73
Class B Hazardous Materials Engineer's License: Group 4 189
Class B Hazardous Materials Engineer's License: Group 5 47
Class B Hazardous Materials Engineer's License: Group 6 52
Class C Hazardous Materials Engineer's License 38
High-pressure gas-related qualifications High-pressure Gas Production Safety Management (Class-A Mechanical) 33
High-pressure Gas Production Safety Management (Class-A Chemical) 13
High-pressure Gas Production Safety Management (Class-B Mechanical) 212
High-pressure Gas Production Safety Management (Class-B Chemical) 63
High-Pressure Gas Production Safety Management (Class-C Chemical: Special subjects) 170
High-pressure Gas Production Safety Management (Class-C Chemical: Liquefied Petroleum Gas) 11
High-pressure Gas Production Safety Management (Class-C Chemical) 13
High-pressure Gas Class-1 Sales Safety Chief 53
High-pressure Gas Class-2 Sales Safety Chief 20
High-pressure Gas Class-1 Refrigeration Safety Manager 2
High-pressure Gas Class-2 Refrigeration Safety Manager 4
High-pressure Gas Class-3 Refrigeration Safety Manager 9
Liquefied Petroleum Gas Installation Engineer 6
Occupational safety and health related qualifications Handlers of General Poisonous and Deleterious Substances 50
Class-1 Boiler Expert's License 6
Class-2 Boiler Expert's License 14
Operations Chief of Gas Welding License 12
Skill Training Course for Operation Chief of Oxygen Deficient/Hydrogen Sulfide Danger 178
Skill Training Course for Operations Chief of Hazardous Work of Oxygen Deficiency 11
Class-1 Skill Training Course for Operations Chief of Hazardous Work of Oxygen Deficiency 4
Class-2 Skill Training Course for Operations Chief of Hazardous Work of Oxygen Deficiency 102
Class-1 Health Officer's License 75
Specific Dust Pollution Control Manager 1
Welding/Inspection technology related qualifications Non-Destructive Testing Engineer Solvent-Removable Penetrant Testing Level 1 9
Non-Destructive Testing Engineer Solvent-Removable Penetrant Testing Level 2 30
Non-Destructive Testing Engineer Dye Penetrant Testing Level 1 4
Non-Destructive Testing Engineer Dye Penetrant Testing Level 2 10
Non-Destructive Testing Engineer Ultrasonic Testing Level 1 70
Non-Destructive Testing Engineer Ultrasonic Testing Level 1 2
Non-Destructive Testing Engineer Magnetic Particles Testing Level 1 1
Non-Destructive Testing Engineer Radiographic Testing Level 1 3
Non-Destructive Testing Engineer Radiographic Testing Level 2 1
JIS Certification of Welders (TIG Welding) 1
JIS Certification of Welders (Stainless Steel Welding) 11
IIW International Welding Technologist (IWT) 1
JIS Certification of Welders (Silver Alloy Brazing) 6
LWS Certification of Welders (Aluminum Welding) 1
LWS Certification of 3nd Class Welding Coordination Personnel (Aluminum Alloy Structure) 1
Information processing related qualifications Applied Information Technology Engineer 1
Second Class Information Processing Engineer 3
Information Technology Passport 2
IT Passport 11
Number of qualification holders 2,294

Internally Certified Qualifications

(As of March 2023)

ClassificationQualification nameNumber of people
EquipmentManufacturing Manager (High Pressure Gas Certified Products)2
JIS Welder (High Pressure Gas Certified Products)2
Inspection Manager (High Pressure Gas Certified Products)2
Design Manager (High Pressure Gas Certified Products)2
Inspector of High Pressure Gas Certified Products11
Welding Construction Manager (High Pressure Gas Certified Products)4
Maintenance Staff Type A Class 116
Maintenance Staff Type A Class 260
Maintenance Staff Type B-I Class 116
Maintenance Staff Type B-I Class 275
Maintenance Staff Type B-II Class 128
Maintenance Staff Type B-II Class 278
Maintenance Staff Type C Class 133
Maintenance Staff Type C Class 237
First Class Inspector147
Second Class Inspector Type A6
Second Class Inspector Type B26
Second Class Inspector Type C27
First Class CAD Drafter2
Second Class CAD Drafter7
Equipment Designer Class A4
Equipment Designer Class B10
Equipment Designer Class C9
Equipment Designer Class D5
Equipment Designer Class E44
Calibration Staff Class A4
Calibration Staff Class B13
Commissioning Staff Type A Class 111
Commissioning Staff Type A Class 211
Commissioning Staff Type B-I Class 124
Commissioning Staff Type B-I Class 216
Commissioning Staff Type B-II Class 117
Commissioning Staff Type B-II Class 219
Commissioning Staff Type C Class 130
Commissioning Staff Type C Class 222
First Class Analyst4
Second Class Analyst8
Equipment WorkGeneral Gas Equipment Inspector (A)32
General Gas Equipment Inspector (B0)184
General Gas Equipment Inspector (B1)92
General Gas Equipment Inspector (B2)82
General Gas Equipment Inspector (B3)92
General Gas Equipment Inspector (B4)41
General Gas Equipment Inspector (B5)33
General Gas Equipment Inspector (B6)39
Chief Engineer (Plumbing Business)113
Chief Engineer (Machinery and Equipment Installation Business)92
First Class Piping Construction Manager28
Second Class Piping Construction Manager93
Third Class Piping Construction Manager74
First Class Piping Construction Designer115
Second Class Piping Construction Designer62
Semiconductor Gas Equipment Inspector (A)57
Semiconductor Gas Equipment Inspector (B)164
High Pressure Gas Safety Act Documentation Staff133
Welding Construction Manager127
Welder346
Welding Inspector87
Electrical WorkChief Engineer (Electrical Work)36
Electric Instrumentation Inspector73
First Class Electric Instrumentation Designer40
Second Class Electric Instrumentation Designer28
First Class Electrical Work Manager10
Second Class Electrical Work Manager29
Third Class Electrical Work Manager36
Quality/EnvironmentFirst Class Environmental Auditor (2004 version)20
First Class Environmental Auditor (2015 version)8
Second Class Environmental Auditor (2004 version)27
First Class Quality Auditor (2008 version)43
First Class Quality Auditor (2015 version)10
Second Class Quality Auditor (2008 version)33
First Class Occupational Safety and Health Auditor (2007 version)25
Second Class Occupational Safety and Health Auditor (2007 version)11
SafetyCompletion Inspector58
General Completion Inspector26
Safety Inspector59
General Safety Inspector28
Number of qualification holders3,518

* The number of internally certified qualification holders includes that of partner companies.