NMTCB Radiation Safety & Regulations 4

Question 1

Which regulatory body requires an Agreement State to have a radiation control program at least as stringent as NRC regulations?

Accepted Answer

NRC (Nuclear Regulatory Commission)

Answer

The NRC grants Agreement State status, requiring states to adopt and enforce radiation regulations at least equivalent to NRC standards.

Question 2

What is the purpose of a wipe test (smear test) in nuclear medicine?

Accepted Answer

Detect removable radioactive surface contamination

Answer

Wipe tests detect removable (transferable) contamination on surfaces by wiping and counting the collected sample in a dose calibrator or scintillation counter.

Question 3

Under NRC regulations, how long must records of radiation surveys in restricted areas be retained?

Accepted Answer

3 years

Answer

10 CFR 20.2103 requires that radiation survey records be retained for 3 years after the record is made.

Question 4

A nuclear medicine technologist receives an extremity dose of 45 rem in one year. Is this within NRC limits?

Accepted Answer

Yes, because the extremity limit is 50 rem/year

Answer

The NRC sets the annual extremity (hands, feet) dose equivalent limit at 50 rem (500 mSv), so 45 rem is within limits.

Question 5

What is 'restricted area' as defined by 10 CFR Part 20?

Accepted Answer

Any area where access is limited to protect individuals from radiation

Answer

A restricted area is defined by NRC as any area where access is controlled for purposes of protecting individuals from radiation or radioactive material.

(NMTCB) Nuclear Medicine Technology Certification Board Practice Test

(NMTCB) Nuclear Medicine Technology Certification Board Practice Test

NMTCB Radiation Safety & Regulations 4