Dosimetry Board Review Flash Cards Set 3 questions
with verified answers
% loss/cm for photon energies:
Cu (ortho)-
Co-60-
4X-
6X-
10X-
15X-
18X- Ans✓✓✓ Cu (ortho)- 15%/cm
Co-60- 4-5%/cm
4X- 4%/cm
6X- 3%/cm
10X- 3%/cm
15X- 2.5%/cm
18X- 2%/cm
Accuracy standard for well counters Ans✓✓✓ 1. +/- 5%
2. Traceable to NIST
Acronyms:
NRC-
, ICRP-
DOT-
NCRP-
IAEA-
USNASC-
BEIR- Ans✓✓✓ NRC- Nuclear Regulatory Commission
ICRP- International Committee on Radiation Units & Measures
DOT- Department of Transportation
NCRP-National Commission on Radiation Protection and Measurement
IAEA- International Atomic Energy Association
USNASC- U.S. National Academy of Science Committee
BEIR- Biological Effects of Ionizing Radiation
cm Cerrobend and cm Lead conversion Ans✓✓✓ 1cm Pb = 1.2 cm
Cerrobend
Due to fact that Cerrobend has small air bubbles in it leading to slightly
less shielding
Convert TVL to HVL Ans✓✓✓ 1 TVL = 3.32 HVL
Daily HDR Tests Ans✓✓✓ Safety interlocks, area monitor, source
positioning
with verified answers
% loss/cm for photon energies:
Cu (ortho)-
Co-60-
4X-
6X-
10X-
15X-
18X- Ans✓✓✓ Cu (ortho)- 15%/cm
Co-60- 4-5%/cm
4X- 4%/cm
6X- 3%/cm
10X- 3%/cm
15X- 2.5%/cm
18X- 2%/cm
Accuracy standard for well counters Ans✓✓✓ 1. +/- 5%
2. Traceable to NIST
Acronyms:
NRC-
, ICRP-
DOT-
NCRP-
IAEA-
USNASC-
BEIR- Ans✓✓✓ NRC- Nuclear Regulatory Commission
ICRP- International Committee on Radiation Units & Measures
DOT- Department of Transportation
NCRP-National Commission on Radiation Protection and Measurement
IAEA- International Atomic Energy Association
USNASC- U.S. National Academy of Science Committee
BEIR- Biological Effects of Ionizing Radiation
cm Cerrobend and cm Lead conversion Ans✓✓✓ 1cm Pb = 1.2 cm
Cerrobend
Due to fact that Cerrobend has small air bubbles in it leading to slightly
less shielding
Convert TVL to HVL Ans✓✓✓ 1 TVL = 3.32 HVL
Daily HDR Tests Ans✓✓✓ Safety interlocks, area monitor, source
positioning
