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Key Facts: ASNT IRRSP Exam
100
Exam Questions
ASNT
3 hours
Time Limit
ASNT
70%
Passing Score
ASNT
Pearson VUE
Testing Partner
ASNT
10 CFR Part 34
Primary Regulation
NRC
6 months
Practical Exam Window
Employer-administered
The IRRSP exam is a 100-question, 3-hour multiple-choice CBT delivered through Pearson VUE, requiring a 70% score to pass. The exam aligns with 10 CFR Part 34 and tests radiation physics, ALARA shielding math, 10 CFR Part 20 dose limits, exposure-device operation, emergency response, and 49 CFR radioactive transport rules. A separate employer-administered practical (hands-on) exam, typically within 6 months of the written exam, is required before working independently as a radiographer.
Sample ASNT IRRSP Practice Questions
Try these sample questions to review concepts for the ASNT IRRSP exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 118+ question experience with AI tutoring.
1Iridium-192 has a half-life of approximately 73.83 days. If a source measures 100 Ci today, what will its activity be after one half-life?
2Which isotope has the longest half-life among common industrial radiography sources?
3What is the predominant mode of radioactive decay for Iridium-192?
4Cobalt-60 emits two principal gamma photons. What are their approximate energies?
5Selenium-75 is typically chosen over Iridium-192 for radiography of which material range?
6Cesium-137 effectively emits a single gamma photon at what approximate energy?
7An Ir-192 source decays from 100 Ci through three half-lives. What is the remaining activity?
8What fundamental difference distinguishes X-rays from gamma rays of the same energy?
9In an X-ray tube, what primarily controls the maximum energy of the emitted X-ray spectrum?
10Which interaction dominates when low-energy photons (below about 100 keV) interact with high atomic number materials such as lead?
About the ASNT IRRSP Exam
The ASNT Industrial Radiography Radiation Safety Personnel (IRRSP) certification confirms that a radiographer has the radiation safety knowledge required to perform industrial radiography under 10 CFR Part 34 (and Agreement State equivalents). The 100-question, 3-hour computer-based exam at Pearson VUE covers radiation physics, dosimetry and biological effects, ALARA and shielding, exposure equipment (projector-type cameras and X-ray tubes), emergency response, NRC regulations, and DOT transport rules. A separate employer-administered practical (hands-on) exam, typically completed within 6 months of the written exam, is also required before working independently.
Exam sponsor: ASNT / Pearson VUE. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Assessment
100 multiple-choice questions in a single computer-based session; candidates choose RAM/Gamma, X-ray Technologies, or the Combination exam
Time Limit
3 hours
Passing Score
70%
Reported exam pass rate: Not publicly disclosed. ASNT does not publish IRRSP pass-rate statistics. Exam sponsor website
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Our practice resources: topics covered
We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.
Fundamentals of Radiation Safety
Types of radiation, origin of radiation, and interaction with matter.
Exposure and Effects
Radiation exposure and the biological effects of exposure.
Controlling Exposure
Distance, shielding, and time.
Radiation Detection
Radiation survey instruments, survey requirements and techniques, and personnel monitoring devices.
Radiographic Equipment
Exposure devices (RAM/X-ray) and collimators, source changers and storage containers, daily and quarterly inspections, and RAM inventory, leak tests, repairs, and tagging.
Regulations
Definitions; licensing and registration; notices, reports, and records; labeling, boundaries, and posting; maximum allowable doses; personnel training; transportation; surveys and monitoring; and exposure equipment and storage requirements.
Operating and Emergency Procedures
Site and installation requirements, operating procedures, handling and securing of sources, and personnel responsibilities.
Preparing for the ASNT IRRSP Exam
What You Need to Know
- Passing score: 70%
- Assessment: 100 multiple-choice questions in a single computer-based session; candidates choose RAM/Gamma, X-ray Technologies, or the Combination exam
- Time limit: 3 hours
- Exam / certification fees: $300 ASNT member / $325 nonmember Official sources
Using Our Practice Resources
- Work through all 118 available questions
- Review every answer and explanation
- Track weak areas and revisit them
- Use our AI tutor for tough concepts
ASNT IRRSP: Suggested Study Strategy
Frequently Asked Questions
How many questions are on the IRRSP exam and how much time do I have?
The IRRSP exam has 100 multiple-choice questions and a 3-hour time limit. The exam is delivered as a computer-based test at Pearson VUE test centers, and you can choose the Radioactive Materials (RAM/Gamma) exam, the X-ray Technologies exam, or the Combination exam covering both bodies of knowledge.
What is the IRRSP passing score?
The passing score is 70%. ASNT's IRRSP Program Document requires a minimum score of 70 percent on each examination.
Is the IRRSP written exam enough to work as a radiographer?
No. Passing the IRRSP written exam covers the radiation safety knowledge requirement under 10 CFR 34.43, but the regulations also require that the employer/licensee administer a practical (hands-on) examination demonstrating competence on the actual equipment used. Most licensees document this practical exam within 6 months of the IRRSP written exam.
What topics are on the IRRSP exam?
Major topics include radiation physics (decay, half-lives of Ir-192/Co-60/Se-75/Cs-137, gamma spectra, X-ray production), dosimetry and biological effects, ALARA and shielding (inverse-square, HVL, gamma constant), exposure device operation, emergency response, 10 CFR Part 34 and Part 20 regulations, and 49 CFR Type A/Type B transport requirements.
How do I schedule the IRRSP exam?
Apply through ASNT's certification portal, then schedule a Pearson VUE testing appointment after your application is approved. Bring photo ID; the exam is administered in English. Confirm current fees and scheduling steps on ASNT's IRRSP examination page.
How long is the IRRSP certification valid?
ASNT IRRSP certification is valid for five years. To recertify, you pass the computer-based exam again for each IRRSP certification you hold before it expires; ASNT accepts recertification applications up to six months before the expiration date and asks for them at least 60 days before it.
Can I take IRRSP if I have not worked under a license yet?
ASNT requires documented experience before you apply: 200 hours/29 days for the RAM exam or 120 hours/18 days for the X-ray exam, verified by a current Radiation Safety Officer or company personnel officer, plus 40 hours of radiation safety training. Most candidates gain this experience with an employer holding a radiography license, which also administers the practical exam.