STE #7

Question 1

Which of the following isotopes is not NORM?

Answer 1

Cesium

Question 2

Radioactivity is considered to be detectable when ______.

Answer 2

Reproducible indication of its presence above background is found

Question 3

Material may be unconditionally released from radiological controls if it meets which of the following criteria?

Answer 3

1. No detectable loose surface contamination.
2. No detectable/suspected internal contamination.
   and 3. No detectable alpha contamination.

Question 4

Which one of the following is not required to be on a radioactive material label

Answer 4

Do not remove without RP Supervisor approval

Question 5

A small computer was being surveyed for release. A smear was taken and the results were no detectable beta/gamma and 2 dpm alpha. The computer was placed in a TEM and did not alarm. The computer could be released. True or False?

Answer 5

False

Question 6

If an item is placed in a TEM and alarms the unit twice which action below should be taken?

Answer 6

1. Decontaminate the item and re-monitor in the TEM,

and 2. Control the item as radioactive material

Question 7

When can personal that has been confirmed as being contaminated be returned back to the owner

Answer 7

Item has been deconned and successfully passes a TEM without alarming

Question 8

Security equipment such as firearms, respiratory protection equipment, ammunition; should be monitored on the individual monitors through the exit equipment. True or False?

Answer 8

True

Question 9

A Senior ANSI qualified technician is required to release personal items through a TEM. True or False?

Answer 9

False

Question 10

To be unconditionally released equipment must meet which criteria below

Answer 10

No detectable naturally occurring radioactive material above background

Question 11

Items which are suspected to be contaminated with tritium can be released through a TEM monitor since it can detect low levels of gamma radiation. True or False?

Answer 11

False

Question 12

Which of the following is not true of TEM monitors

Answer 12

Effective in measuring very low levels of beta and gamma radiation

Question 13

TEM should alarm when ___________ dpm has been detected.

Answer 13

5

Question 14

Who must approve conditional release of radioactive material

Answer 14

RP Supervisor

Question 15

Radioactive material in storage should meet the following requirements

Answer 15

1. Be stored in an area that is posted in accordance with NISP-RP-004, Radiological Posting,
   and 2. Have a radioactive material label or tag clearly attached that shows the radiological hazards

Question 16

To store radioactive material in an outside area the following criteria must be met

Answer 16

Be inspected for leaks prior to being loaded

Question 17

Workers may transport radioactive material within an RCA if the dose rates are <80 mrem/hr contact and < 40 mrem/hr at 30 cm. True or False?

Answer 17

False

Question 18

When is RP approval required for a radiation worker to transport radioactive material within an RCA?

Answer 18

Contamination is found on the outside of the package

Question 19

P must escort all packages with a dose rate of __________.

Answer 19

30 cm dose rate >80 mrem/hr

Question 20

The process where we remove radioactive material from surfaces where it is not wanted is called

Answer 20

Decontamination

Question 21

Which of the following is a classification of chemicals used in the decontamination process

Answer 21

1. Chelating compounds
2. Oxidizers,
   and 3. Acids

Question 22

One effective way to remove fixed contamination is vacuuming the surface. True or False?

Answer 22

False

Question 23

What are some of the disadvantages of using the wiping method to decontaminate a surface?

Answer 23

1. Ineffective on porous materials
2. Can become source term resulting in high dose rates
   and 3. Generates radioactive waste

Question 24

What are some of the advantages of using mopping as a decontamination method

Answer 24

Effective for large areas