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Terms in this set (41)
Ionizing radiation is formed when atoms:
3.Experience a change in their energy state
Sources of radiation used within industry can be divided into what general categories? Select all answers that apply and then click DONE.
1.Sealed sources containing radioactive isotopes
3. X-ray producing equipment
Radiation is used within industry to:
1.Decrease process efficiency.
2.Increase process efficiency.
3.Improve product quality.
4. Reduce product quality.
What are atoms made of?
Which of the following are examples of ionizing radiation? Select all answers that apply and then click DONE.
The penetrating capability of ionizing radiation depends on:
1.The size of particles.
2.The electrical charge of particles.
3.The wavelength of electromagnetic waves.
4.The type of industry using it.
Naturally occurring radioactive materials are present in which of the following?
Examples of electromagnetic waves include:
1. Nuclear power
Starla uses portable nuclear gauges to measure the density of asphalt in paving mix. She wears a special personal measuring device that is checked every three months to determine her accumulated dosage. However, she failed to notice that the gauge had developed a leak. When the reading on her personal measuring device is checked, it indicates that her accumulated dosage is 5,200 millirems. Is Starla's reading within the safe exposure limits established by regulatory agencies? Select the correct answer and then click DONE.
a.Yes, because Starla has a regulatory exposure limit of 620 millirems per year.
b. Yes, because Starla has a regulatory exposure limit of 5 rems per year.
c.No, because during the calendar year, the dose to the whole body cannot exceed 5 rems.
d.No, because no amount of employee exposure to radiation is ever acceptable.
Radiation deposits energy in living tissue. What is this deposited energy referred to as? Select the correct answer and then click DONE.
b. The dose
Which of the following are units of measurement that measure exposure to radiation? Select all answers that apply and then click DONE.
Which of the following are potential direct results of excessive exposure to radiation? Select all answers that apply and then click DONE.
1. High blood pressure
During the calendar year, the maximum radiation dose that the whole body is allowed to be exposed to is:
The average annual exposure from natural and man-made sources is about _____ millirems per year. Select the correct answer and then click DONE.
Which of the following are examples of administrative controls for radiation? Select all answers that apply and then click DONE.
Which of the following are examples of engineering controls for radiation? Select all answers that apply and then click DONE.
A speed with which a person will experience negative effects from exposure to high doses of radiation depends on:
1.The level of the exposure
2.The duration of the exposure
3.The type of industry
4.The type of administrative controls
What properties of a material can a nuclear gauge measure? Select all answers that apply and then click DONE.
Nuclear gauges consist of a(n) __________ source that is housed within a source holder and placed at a crucial point in the process.
__________ work by measuring the portion of radiation that bounces back toward the detector.
a.Thickness level gauges
d. Moisture content gauges
When measuring density, a detector must be mounted:
a.Adjacent to the source
b.Opposite the source
c.Within the source
d.Within the material
When measuring moisture content, a detector must be mounted:
a.Adjacent to the source
b.Opposite the source
c. Within the source
d.Within the material
Radiation is directed at the material being processed when:
a.The source holder is placed near the material.
b.The source holder's shutter is opened.
c.The source holder's shutter is closed.
d.The radiation bounces back toward the detector.
Lewis works on a road construction crew. As part of his job, he uses a portable nuclear gauge to determine the density of asphalt in the paving mix. After receiving several incorrect readouts, he realizes that the gauge is malfunctioning. What should Lewis do next? Select the correct answer and then click DONE.
a.Break the seal on the gauge and force it to open.
b.Assume it is beyond repair and leave it on the side of the road.
c. Clean the gauge to see if that fixes the problem.
d.Discontinue use of the gauge and report the issue to his supervisor.
What are the primary methods for reducing radiation exposure? Select all answers that apply and then click DONE.
What are the colors of radiation warning signs? Select the correct answer and then click DONE.
a,Black on Orange
b, Red on White
c,Black on Yellow
d,Magenta or Purple on Yellow
Only trained, authorized personnel are allowed to perform which of the following tasks on a nuclear gauge? Select all answers that apply and then click DONE.
3.Gauge relocation work
4.Reading the gauge
On gauges with warning light systems, what color light is on when the shutter is open? Select the correct answer and then click DONE.
If no warning light is lit on a nuclear gauge, you should assume that:
1.The shutter is open.
2.The shutter is closed.
3.There is potential for exposure.
4.There is no potential for exposure.
The __________ provides the shielding for nuclear gauges and greatly reduces the radiation. Select the correct answer and then click DONE.
a. Source housing
The __________ is retractable shielding that, when opened, allows the radiation beam to reach the detector. Select the correct answer and then click DONE.
Film rings and pocket ion chambers are examples of:
a. Direct reading dosimeters
b.Personal monitoring devices
d. Radiation generators
Rita works in a manufacturing plant where fixed nuclear gauges are used. Her coworker, Kyle, returns from break and cannot find his dosimeter. This is the second time Kyle has lost his dosimeter. The first time it happened, his supervisor was very angry and told him that if he lost it again, he would take the cost of replacing it out of Kyle's paycheck. Kyle decides not to tell his supervisor about the lost dosimeter; instead, he asks Rita if they can share hers. Should Rita share her dosimeter with Kyle? Select the correct answer and then click DONE.
a. Yes, because she does not want Kyle to get into trouble.
b.Yes, because the danger of radiation exposure is low.
c.No, because Kyle needs to learn his lesson.
d.No, because she will be in violation of company regulations if she does not wear her dosimeter at all times while on the job.
Which of the following are types of personal monitoring equipment commonly used to measure radiation exposure? Select all answers that apply and then click DONE.
2.Safety lights on nuclear gauges
3.Direct reading dosimeters
4.Pocket ion chambers
Which devices require development before the results can be read? Select all answers that apply and then click DONE.
4.Pocket ion chamber
Before performing maintenance on a nuclear gauge, shutters should be:
a.Locked in the open position
b. Locked in the closed position
c.Left open without locking or tagging out
d.Left closed without locking or tagging out
Which of the following are required requirements when working with nuclear gauges? Select all answers that apply and then click DONE.
1.Gauges must be registered.
2.Facilities must be licensed.
3. Radiation equipment must be labeled.
4.Applicable regulations must be posted.
5.All employees must be licensed to work with nuclear gauges.
The radiation safety officer is responsible for:
1. Investigating unusual incidents
3.Performing maintenance on nuclear gauges
4.Reviewing job safety analysis
Which device allows you to check the amount of radiation you are receiving at any given moment? Select the correct answer and then click DONE.
c. Film ring
d.Pocket ion chamber
Dosimeters should be worn:
1.In your pants pocket
2.At the collar level
3. Outside of protective aprons
4.On your finger
Every facility that uses ionizing radiation sources must have a __________ responsible for regulatory requirements. Select the correct answer and then click DONE.
a.Radiation Safety Officer
d.Hazmat Safety Officer
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