About this app

A study app for the Japan Class 3 Refrigeration Safety Manager (Refrigeration Machinery Responsible Person) exam. Study efficiently with practice questions and detailed explanations across all subjects. ■ Subjects Covered [Safety Management Technology] • Refrigeration cycle and heat calculations (p-h diagram, COP) • Refrigerants, brine, and refrigeration oil • Compressors, condensers, evaporators • Auxiliary equipment, expansion valves, automatic control • Safety devices, pressure vessels, materials, installation, maintenance [Laws and Regulations] • High Pressure Gas Safety Act (general provisions, definitions, scope) • Manufacturing regulations • Storage, transport, consumption, disposal, sales • Safety systems (refrigeration safety managers, inspections) • Technical standards for containers and facilities ■ 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 Works completely offline — study anytime, anywhere. ■ Reference Sources • Ministry of Economy, Trade and Industry https://www.meti.go.jp/ • High Pressure Gas Safety Institute of Japan (KHK) https://www.khk.or.jp/ ※ This app is an independent study tool and is not affiliated with any examination body.

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Version 1.1 Jul 17, 2026

Minor fixes.

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