IRRSP Study Guide 2026
Everything you need to pass the IRRSP exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 IRRSP Exam Format at a Glance
📚 IRRSP Topics to Study (15)
✍️ Sample IRRSP Questions & Answers
1. During radiographic operations, how can the risk of accidental radiation exposure be minimized?
Minimizing accidental radiation exposure during radiographic operations relies heavily on engineering controls and protective measures. Remote-controlled equipment allows operators to maintain a safe distance from the source, while proper shielding reduces radiation levels in occupied areas. These combined strategies significantly decrease the risk of unintended exposure to personnel.
2. Which combination best describes the integrated approach to radiation protection?
The integrated approach to radiation protection, often referred to as the "Time, Distance, Shielding" triad, is the most effective strategy. Each of these principles independently reduces radiation exposure, but when applied concurrently, they provide comprehensive protection. This combined method ensures that exposure is minimized through multiple layers of safety.
3. Which isotope is most commonly used in portable industrial radiography exposure devices due to its appropriate half-life and gamma energy?
Ir-192 is the most widely used isotope in portable industrial radiography because its ~74-day half-life and average gamma energy (~0.38 MeV) are well-suited for field radiography of steel.
4. How often should personal dosimeters be checked for accurate exposure readings?
For accurate and timely monitoring of radiation exposure, personal dosimeters should be checked before and after each work shift. This practice ensures that any exposure received during the shift is recorded and allows for immediate identification of potential overexposures. Regular checks are vital for maintaining an up-to-date record of an individual's cumulative dose.
5. What is a 'pig' in the context of industrial radiography source management?
A 'pig' is a portable, heavily shielded container (typically lead or depleted uranium) used to safely store and transport a single sealed source.
6. According to 10 CFR Part 34, which of the following is a required daily check for a survey meter before it is used for radiographic operations?
10 CFR 34.31(a) requires that visual and operability checks be performed on survey meters before use on each day the equipment is to be used. This operability check must be performed using a check source or another appropriate method to ensure the instrument is functioning correctly. Full calibration is required at specific intervals (e.g., every 6 months), not daily.