Internal Monitoring Equipment

Question 1

What is the principle behind scintillation?

Answer 1

Converts the kinetic energy of the ionizing radiation into photons

Question 2

What RADIACs are used for internal monitoring?

Answer 2

*PRM-5 with SPA-3 Probe
*AN/PDR-79(IM-253D/PD with SPA-3 probe)
*Canberra Fast Scan Whole Body Counter (WBC) Multi-channel analyzer (MCA)
*Canberra ASA-100 MCA

Question 3

What is the mode of operation for a PRM-5 with a SPA-3 probe?

Answer 3

Scintillation

Question 4

How does the FASTSCAN operate?

Answer 4

Scintillation

Question 5

What type of radiation does FASTSCAN Detect?

Answer 5

Gamma

Question 6

How does the FASTSCAN conduct its survey?

Answer 6

Contamination/Internal Monitoring

Question 7

How does Canberra 35N/ASA100 operate?

Answer 7

Scintillation Dectors

Question 8

What does Canberra 35N/ASA100 detect?

Answer 8

Gamma Radiation

Question 9

Survey for Canberra 35N/ASA100

Answer 9

Contamination/ Internal Monitoring

Question 10

When is Internal monitoring performed per the NNPP?

Answer 10

Prior to initial being authorized to receive Occupational Radiation (PE)
Near as practical within 180 days prior to separation from naval service or transfer to non NNPP billets (TE)
Occurrences when a suspected Radioative was taken in the body (SE).
Periodically, in function with medical exam (RE)
In Conjunction with an RME (RE)
When deemed necessary by the RHO (SE)

Question 11

MDA of a PRM-5 w/ SPA-3 Probe

Answer 11

10 nCi

Question 12

MDA of the Canberra ASA-100 MCA

Answer 12

5 nCi

Question 13

What is the MDA of the Canberra FASTSCAN WBC MCA?

Answer 13

2 nCi

Question 14

How do the RADIACs used for internal monitoring all function?

Answer 14

All use Scinitallation as their MOP, detect gamma radiation, and survey via contamination/internal monitoring.

Question 15

10/5=2

Answer 15

The MDAs for all internal monitors used by NNPP
PRM-5 with SPA 3 (10 nCi)
Canberra FASTSCAN (5 nCi)
Canberra ASA-100 (2 nCi)