Free IRRSP Exam Prep
ASNT Industrial Radiography Radiation Safety Personnel (IRRSP)
Prepare for the IRRSP exam without spending hundreds on expensive prep courses. Free study guides, practice questions, flashcards, and related exam resources.
Quick Facts
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IRRSP ASNT NDT Certifications License: Complete Roadmap
Follow this path to organize your licensing and exam preparation
Phase 1: Radiation Physics FoundationYou are here
Learn radioactive decay, half-lives of Ir-192/Co-60/Se-75/Cs-137, gamma spectra, X-ray production, and photon interactions (photoelectric, Compton, pair production).
Phase 2: Dosimetry, Limits, and Biological Effects
Master rem/Sv/rad/Gy unit conversions, 10 CFR 20 occupational and public dose limits, declared pregnant worker rules, and deterministic vs stochastic effects.
Phase 3: ALARA, Shielding, and Calculations
Drill inverse-square problems, HVL/TVL stacking for lead/steel/concrete, gamma-constant exposure rate calculations, and area classification rules.
Phase 4: Equipment, Emergency Response, and Regulations
Study projector cameras, source pigtails, guide tubes, collimators, leak tests, stuck-source recovery, 10 CFR Part 34 duties, and 49 CFR transport requirements.
Phase 5: Timed Mixed Review
Run timed 100-question mixed sets at 70%+ accuracy, plus dedicated calculation drills before scheduling at Pearson VUE.
Can You Take the IRRSP Exam?
Check if you meet the basic eligibility requirements
- •Sponsorship/application through an employer holding a radiography license is common.
- •Candidates must also complete an employer-administered practical (hands-on) exam, typically within 6 months of the written exam, before working independently.
- •Photo ID required at the Pearson VUE test center.
- •Exams are administered in English.
- •Choose the exam option matching your equipment: RAM/Gamma, X-ray Technologies, or Combination.
IRRSP Quick Facts
Time to Get Licensed
6-10 weeks for most sponsored candidates, depending on prior radiography experience
From start to license in hand
Retake Policy
Candidates who do not pass may retake the exam in line with ASNT's published retake policy. See ASNT's IRRSP examinations page for current waiting periods and retake fees.
Total Cost Breakdown
Free IRRSP Prep Tools
Reported exam pass rate: ASNT does not publish public IRRSP pass-rate statistics.. These figures describe exam candidates, not OpenExamPrep user outcomes. Check the exam sponsor’s website for published statistics.
100 Practice Questions
Review the ASNT IRRSP body of knowledge: physics, dosimetry, ALARA, equipment, emergency response, 10 CFR 34, and DOT transport.
AI-Powered Review
Get worked solutions for inverse-square, HVL, and gamma-constant calculations and clear regulation citations for every answer.
2026 Updated
Reflects current 10 CFR Part 34, 10 CFR Part 20, and 49 CFR Parts 172/173 references that the IRRSP exam draws from.
Free Access
Prepare for the IRRSP CBT before paying ASNT examination fees or scheduling at Pearson VUE.
What You'll Study
9 chapters covering the exam topics in this guide
Chapter 1: Radiation Physics & Radioactive Decay
4 sections
Chapter 2: Radiation Interactions & Biological Effects
4 sections
Chapter 3: Radiation Protection Standards & Dose Limits
3 sections
Chapter 4: ALARA Calculations & Shielding Math
4 sections
Chapter 5: Radiation Detection & Personnel Monitoring
3 sections
Chapter 6: Radiographic Exposure Equipment & Operating Mechanics
4 sections
Chapter 7: Operational Safety & Field Radiography Procedures
4 sections
Chapter 8: Radiation Emergencies & Source Recovery
3 sections
Chapter 9: Regulatory Compliance & Transportation
3 sections
IRRSP Exam Details
ASNT Industrial Radiography Radiation Safety Personnel (IRRSP)
Administered by ASNT
Exam Content Breakdown
Based on the official ASNT content outline
Radioactive decay, half-life of common isotopes (Ir-192 73.83 d, Co-60 5.27 y, Se-75 119.78 d, Cs-137 30.07 y), X-ray production, gamma spectra, photon interactions.
Rem/Sv/rad/Gy, somatic vs genetic effects, deterministic vs stochastic, 10 CFR 20 occupational and public dose limits.
Time, distance, shielding; inverse-square law; HVL/TVL for lead, steel, concrete; gamma constant calculations; area classifications.
Projector-type exposure devices (Sentinel/QSA cameras), source pigtails, guide tubes, collimators, source change-outs, survey instruments, daily checks.
Source disconnect, stuck source, retraction failure, source recovery planning, contamination control, NRC notification thresholds.
10 CFR Part 34 industrial radiography (RSO duties, AMP, surveys, recordkeeping, personnel qualification) and applicable 10 CFR Part 20 provisions.
49 CFR Type A vs Type B packages, transport index, RADIOACTIVE WHITE-I/YELLOW-II/YELLOW-III labels, HRCQ, hazmat training.
What's Included
9 Chapters
Complete exam coverage
Practice Quizzes
With detailed explanations
Free to Start
No credit card required
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What's Next After the IRRSP?
After passing the IRRSP, you can pursue these career paths
asnt-ndt-ii
Progress from radiation safety personnel to certified Level II radiographer performing industrial radiographic testing, interpreting radiographs, and documenting weld or casting inspections under SNT-TC-1A or CP-189.
asnt-ndt-iii-rt
Attain ASNT NDT Level III Radiographic Testing certification to establish company radiation safety operating procedures, interpret codes, audit NDT programs, and qualify radiography personnel.
IRRSP Exam FAQ
Official ASNT Resources
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