JKO CBRN Questions and Answers

If a survey team calls back a measurement of 162 rad, how much radiation is present in grays?

1.62 gray

A material that has the ability to cause a charge particle to lose its energy over a sh....

Stopping power

Which gas-filled counter has the worst resolving time?

Geiger-Mueller counter

What is the principle of radiation detection of semiconductor detectors?

The motion of electrons and holes under a voltage difference

Which agency is responsible for the general health and safety aspects of a laboratory w....

OSHA

Which statement best describes a trigger level?

Alerts the surveyor to potential issues before the issue becomes a regulato...

The control measure identifies the location of any radioactive contamination and quality measure is the statement above referred to?

Access/administrative control

Which of the following particles is essentially a helium nucleus, with a mass of 4 amu?

Alpha

Given the following information, how much radioactivity is left? Initial activity = 15 Ci of H-3 Ti...

NOT 4.92 Ci

Which of the following measures the amount of radiation energy absorbed or deposited per unit...

NOT exposure

How is an alpha particle likely to transfer its energy?

NOT excitation
NOT ionization

The photoeletric effect results in _____.

NOT the gamma depositing some of its energy into an orbital electron
NOT the gamma increasing its energy as it travels along its path

Which of the following best describes a gas-filled detector's anode?

NOT negatively charged, inner walls and outer surface of chamber

Ion chambers are preferred when what is needed?

NOT accident dosimetry
NOT detection

Which of the following statements about a liquid scintillation counter is NOT true?

NOT a liquid scintillation counter is often used to measure lower energy beta emitters
NOT quenching is one of the disadvantages of a liquid scintillation counter

Which instrument is the best choice for general purpose radiation work and sp.....

NOT semiconductor detector

According to NRC Regulation 20.1201, the lens of the eye shall....

NOT 10 rem per year

------ compounds that increase the natural turnover process, thus releasing....

NOT chelating agents

Which formula is used to determine the gamma radiation field intensity (I) in R/hr at on....

6CEN

When the time allowed in a radiation field is calculated to prevent a worker from exceed....

NOT time exposure

What kind of surveys are conducted routinely to locate sources of radiation....

NOT personnel and portal

What kind of protection provides protection from only low levels of....

NOT hand protection

Based on the results of the radiation survey, which of the following...

NOT stated trigger values and minimum detectable levels