Fouled Anchor SafetyDose Rate Calculations
Calculate dose rates from point sources, line sources, and area sources with inverse square law and shielding factors.
Module 02 · Radiation safety
RadAegis
Calculate • Shield • Protect
Professional radiation safety calculations and dose tracking. ALARA planning, shielding calculations, decay corrections, and comprehensive radiological reference materials for health physics professionals.
Tc-99m half-life
6.01Bench test · live
Decay a source.
All 27 isotopes in the RadAegis library, with the exact half-lives the app ships with.
Specification
What it does
Shielding Design
Multi-material shielding calculations for lead, concrete, steel, and other common shielding materials with HVL/TVL data.
Decay & Activity
Radionuclide decay calculations with comprehensive isotope database. Activity corrections and daughter product tracking.
ALARA Planning
As Low As Reasonably Achievable planning tools for time, distance, and shielding optimization.
Exposure Tracking
Personal dose tracking and regulatory limit comparison for occupational and public exposure categories.
Regulatory References
Comprehensive library of NRC, DOE, and international regulatory limits and reference materials.
Operators
Who Uses RadAegis
Built by a retired Navy industrial hygienist for the people doing the work
Radiation Safety Officers
RSOs managing licensed material who need dose rate, shielding, and decay math plus survey logs and incident records in one place instead of a spreadsheet stack.
Health Physicists
Practitioners running ALARA job planning with collective dose projection, stay-time calculations, and attenuation through layered materials.
Medical Physics & Nuclear Medicine
CT dose calculation with CTDI and DLP, a radiopharmaceutical database, effective dose across 15 modalities, and fluoroscopy skin dose tracking for interventional work.
Industrial Radiography
Field teams calculating nominal hazard zones, boundary distances, and time-to-dose before a shot.
Laser & RF Safety Officers
The NIR module covers laser MPE under MIL-STD-1425B and ANSI Z136, plus RF and microwave exposure evaluation with hazard zone estimation.
Regulatory & Compliance Staff
ACR and AAPM checklists, NRC 10 CFR Part 20 limit comparison, and PDF/CSV export for the compliance file.
Display captures
On the glass
Included with Pro · on any computer
RadAegis for Web
Your radiation safety records, on a bigger screen. RadAegis for Web is a view-only companion, included with Pro: review dose history, ALARA plans, sources and leak tests, surveys, inspections and incidents, then print them or export a spreadsheet.
- Dose records by year and type, in mSv or mrem
- ALARA job plans: estimated vs actual dose
- Source inventory with leak test history
- Survey logs, inspections and incident reports, printable and exportable
Requires RadAegis Pro with iCloud sync on. View-only: you log records and run the calculators in the app. Sign in with the Apple Account your iPhone uses for iCloud. Your records go straight between your browser and your private iCloud; nothing is stored on our servers.
Operator’s notes
Common questions
N-01Can RadAegis be my official dose of record?
No. Personal dose tracking in RadAegis supports your workflow — trending, planning, and sanity-checking — but it is not a dose of record. Your licensed dosimetry provider remains the authoritative source. The app accepts 12 reference source types including badge reports, EPDs, and dosimetry service results so you can keep your working picture current.
N-02How many isotopes are in the library?
27+ verified medical, industrial, research, and naturally occurring isotopes, each with half-life, decay mode, energy, specific activity, and shielding guidance. You can search by symbol, name, category, or common use.
N-03What calculators are included?
17+, covering dose rate (inverse square, shielding, stay time, time-to-dose), decay and activity after elapsed time, HVL/TVL attenuation through multiple materials, DAC/ALI and contamination assessment, and a scientific calculator carrying radiation-specific constants.
N-04Does it handle non-ionizing hazards too?
Yes. The NIR module does laser MPE calculations against MIL-STD-1425B and ANSI Z136, RF and microwave exposure evaluation, hazard classification, and nominal hazard zone calculation — so laser and RF safety officers aren't stuck in a separate tool.
N-05Who built it?
A retired US Navy Industrial Hygiene Officer — a Certified Industrial Hygienist and Certified Safety Professional with 25+ years across military, government, and civilian sectors. The workflows reflect how the work is actually done, not a developer's reading of a regulation.
N-06Does it work offline?
Yes. The isotope library, calculators, and regulatory references are bundled. Survey logs, inspection records, and incident reports are created on-device and sync via iCloud when you're back in range.
N-07Can I use RadAegis on a computer?
Yes, with Pro. Go to radaegis.fouledanchorsafety.com and sign in with the Apple Account you use for iCloud to view, search, print and export your dose and ALARA records, sources and leak tests, surveys, inspections and incidents. The web version is view-only; you add and edit records in the app.
Ready when you are
Put RadAegis in your kit.
Free to download on iPhone and iPad. Veteran and military pricing is available in-app.
