Radiation Protection 2 Exam JP

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Japan Class 2 Radiation Protection Supervisor exam, 500 explained questions

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Total installs
5
exact · Play shows 5+
Installs / day
0
7-day avg · last day 0
Rating
—★
— ratings · — reviews
Released
28 Aug 2026
2mo ago
Last update
28 Aug 2026
v1.0 · 2mo ago
Countries
—
not checked yet

Installs per day

gain of the exact counter

No change in the counterOur first day-to-day reading of the counter. The line starts with the next one.

Daily tracking since 11 Oct 2026 · history grows every day

Install history

exact counter from Google Play
45611 Oct12 Oct
012345628 Aug11 Oct12 Oct

Dashed: estimate from the release date (no daily data before 11 Oct 2026) · time axis compressed before that day

Daily tracking since 11 Oct 2026 · history grows every day

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Manifest analysis reads only the required APK ranges. Base APK downloads may need separate device splits to install.

Data safety

declared by the developer on Google Play
  • Shares data with third parties App activity, App info and performance, and Device or other IDs
  • Collects data App activity, App info and performance, and Device or other IDs
  • Data is encrypted in transit
  • No way to ask for data deletion

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

4 in 1 group
0 Sensitive1 Notable3 Routine
OtherNotable4

Access to miscellaneous device features that don't fit other categories

  • Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
  • Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
  • Connect to the internet to load content and send datafull network access · INTERNET
  • Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Full description
A study app for Japan's Class 2 Radiation Protection Supervisor exam (第2種放射線取扱主任者試験). This national qualification is based on the Act on the Regulation of Radioisotopes; a Class 2 supervisor can be appointed at facilities that use sealed radioisotopes, but not radiation generating equipment or unsealed sources. All 500 practice questions come with a clear explanation. ■ Subjects Covered (500 questions across 5 subjects, 10 areas) 【Law - Regulations on the prevention of radiation hazards (30 questions in the exam)】 • Purpose, definitions, licensing and notification (40) • Facility standards, use, storage, transport and disposal (40) • Measurement, dose limits, controlled areas, training, health checks (40) • Supervisors, safety regulations, records, security, penalties (30) 【Practice - Technical standards for handling radioisotopes (10 questions)】 • Sealed sources and facility safety management (60) • Radiation measurement (55) • Accident response (35) 【Physics, Chemistry and Biology (10 questions each)】 • Radiation physics (70) - atoms and nuclei, decay modes, interaction with matter, attenuation and shielding • Radiochemistry (65) - isotopes and nuclear reactions, radioactive equilibrium, separation, tracer applications • Radiation biology (65) - DNA damage and repair, effects on cells and the individual, radiation protection The Class 2 exam is held once a year on a single day in late August, with 70 multiple-choice questions in total: 30 on law, 10 on practice, and 10 each on physics, chemistry and biology. To pass you need at least 50% in every subject and at least 60% overall. A single subject below the halfway mark fails the whole exam, so you need to secure the heavily weighted law section while still leaving no gaps in the smaller subjects. This app records your accuracy per area automatically, so you can see exactly which areas are still under the line. Law accounts for over 40% of the paper and rewards accurate recall of provisions and figures, making it the most reliable place to score. This app splits Law into four areas and Practice into three, so you can drill the easily confused figures and procedures - facility standards, dose limits, record-keeping and reporting deadlines - area by area. After passing the exam, the licence is issued once you complete a training course at an institution registered with the Nuclear Regulation Authority. There are no eligibility requirements: anyone can sit the exam regardless of education or work experience. ■ 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 • Area-by-area performance overview - essential when each subject has its own minimum score Works completely offline - study anytime, anywhere. ■ Reference Sources • https://www.nustec.or.jp/ (Nuclear Safety Technology Center) • https://www.nra.go.jp/ (Nuclear Regulation Authority) ※ 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.

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