Boiler Engineer G1 Exam JP

A study app for the Japan Class 1 Boiler Engineer license examination (一級ボイラー技士免許試験). This national qualification ranks above Class 2 and is required for chief boiler operators at workplaces with larger heating surface areas. All 400 practice questions come with a clear explanation.

■ Subjects Covered (400 questions, 100 per subject)
• Boiler structure (100) — heat and steam, structure of large water-tube boilers, fittings and auxiliary equipment, automatic control
• Boiler operation (100) — ignition and operation, water management and treatment, maintenance and idle preservation, handling of fittings, response to abnormalities
• Fuel and combustion (100) — properties and analysis of fuels, combustion calculations, combustion methods and burners, draft and air pollution control
• Laws and regulations (100) — Industrial Safety and Health Act, Ordinance on Safety of Boilers and Pressure Vessels, Boiler Structure Standards

The official exam has four subjects of 10 questions each (100 points per question set), for 40 questions and 400 points in a single four-hour session with no break. To pass you need at least 40% in every subject (4 or more correct per subject) and at least 60% overall (24 or more correct) — falling below the threshold in even one subject means failure. This app uses the same five-option single-answer format as the exam and includes 400 questions, ten times the 40 on the real exam, distributed evenly across the four subjects.

Class 1 shares subject names with Class 2 but goes deeper. The questions cover Class 1 level topics such as large water-tube boiler construction, heat and combustion calculations, automatic control, water management and treatment, and the finer points of the regulations, and do not overlap with Class 2 material.

■ Study Modes
• Random practice (10 / 25 / 50 / 100 questions)
• Study by subject
• All questions in order (resume supported)
• Review incorrect answers
• Bookmarks and unanswered questions

■ Progress Tracking
• Automatic tracking of correct answer rate
• Subject-by-subject performance overview — essential when every subject has its own minimum score

Works completely offline — study anytime, anywhere.

■ Reference Sources
• https://www.exam.or.jp/ (Japan Exam Association for Safety and Health Technology)
• https://www.mhlw.go.jp/ (Ministry of Health, Labour and Welfare)

※ This app is an independent study tool and is not affiliated with any examination body. Content is based on the general scope of the exam and may differ from the actual exam due to legal updates.