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IRRSP EXAM 2024 LATEST COMPLETE 200 ACTUAL
EXAM QUESTIONS WITH 100% CORRECT VERIFIED
ANSWERS/ GRADED A+
The process that results in the removal of orbital electrons from atoms resulting in the
formation of ion pairs is called:
- Excitation
- Radioactivity
- Decay
- Ionization - Correct Answer - Ionization
The fact that gasses bombarded by ionizing radiation become conductors of electrical
current make them useful in:
- X ray transformers
- Cathode tubes
- Detection equipment
- Gasses cannot conduct electrical charges - Correct Answer - Detection equipment
A dosimeter must be capable of reading a range of:
(Answer with A, B, C, or D)
- 0-100 mR
- 0-200 mR
- 0-500 mR
- 0-1 R - Correct Answer - B
Pocket ion chambers must be capable of reading:
- 100 mR 1 / 4
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- 500 mR
- 200 mR
- 999 mR - Correct Answer - 200 mR
An exposure rate is measured by:
- Survey meter
- Dosimeter
- Rate alarm
- Film badge/TLD - Correct Answer - Survey meter
What dosimeters (dosimeter devices) are least affected by moisture?
- Digital dosimeters
- Film badges
- TLDs
- Ion chambers - Correct Answer - TLDs
Full deflection of a survey meter while on battery check means: (Answer with A, B, C, or D)
- Meter is working properly and has good batteries
- Meter may or may not be working properly
- Meter is working properly and battery strength is not an issue
- Meter is unusable - Correct Answer - B
Dosimeters must be calibrated at intervals not to exceed:
- Three months
- Six months
- Biannually
- Annually - Correct Answer - Annually
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Rate alarms must be calibrated at intervals not to exceed:
- Yearly
- Quarterly
- Monthly
- Biannually - Correct Answer - Yearly
A film badge/TLD records what?
- Dose rate
- Exposure rate
- Total dose history for the period worn
- Daily dose - Correct Answer - Total dose history for the period worn
When performing radiography in a permanent radiographic installation equipped with an
area monitor, the technician is not required to wear/use:
- Survey meter
- Film badge/TLD
- Rate alarm
- Dosimeter - Correct Answer - Rate alarm
A direct reading ionization chamber, such as a dosimeter, has the advantage of
providing an:
- Accurate dose history for the month
- Immediate dose history since last time charged
- Accurate dose rate
- Immediate dose rate - Correct Answer - Immediate dose history since last time
charged
A radiographer's survey meter is showing 0 near the source; it can safely be assumed
that:
(Answer with A, B, C, or D) 3 / 4
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- There is no radiation present
- The meter is inoperable and should be repaired when the shift is over
- The meter may be inoperable and a replacement should be used immediately
- The meter is in an inoperable state; the radiographer should retreat from the source
until an operational meter has replaced the suspect meter - Correct Answer - D
A radiographer reads 7.5 on the 10x scale of the survey meter. What is the current dose rate at that position?
- 7.5 mR/hr
- 75 mR/hr
- 750 mR/hr
- 7.5 R/hr - Correct Answer - 75 mR/hr
After 6 half-value layers, what percentage of radiation would be received?
- 50%
- 25%
- 8%
- 1.6% - Correct Answer - 1.6%
Assuming a source has a half-life of 20 years, how old would the source be in 3 half- lives?
- 20 years
- 40 years
- 60 years
- 120 years - Correct Answer - 60 years
If a radiographer has 60 mR at the surface of the exposure device, what would the reading be after 2 half-lives?
- 15 mR
- 40 mR
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