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BIO EOC > Volume 4A > Flashcards

Volume 4A Flashcards

Occupational and Environmental Health (OEH) Risk Assessment: Radiation

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1
Q

Which entity provides regulatory oversight for the use of radioactive materials by Air Force (AF) organizations?

A

United States Air Force (USAF) Radioisotope Committee Secretariat (RICS).

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2
Q

Who is the unit commander’s point of contact for radiation protection matters?

A

Unit radiation safety officer.

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3
Q

A rock rolling down a hill contains what form of energy?

A

Kinetic.

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4
Q

As the kinetic energy in electrons increases, the

A

farther they are from the nucleus.

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5
Q

The number of electromagnetic waves passing a certain point in one second is known as

A

frequency.

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6
Q

As the frequency becomes higher, wavelength becomes

A

shorter.

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7
Q

The amount of energy flowing through a given area in a certain amount of time refers to what measure of electromagnetic radiation?

A

Intensity.

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8
Q

A tanning booth is a good example of which type of radiation?

A

Ultraviolet.

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9
Q

Which component amplifies the electromagnetic frequency (EMF) signal?

A

Transmitter.

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10
Q

Which component transfers electromagnetic frequency (EMF) energy to the antenna?

A

Transmission line.

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11
Q

If the wavelength of a radiofrequency radiation (RFR) emission is 20 centimeters (cm), a waveguide designed for it must have one dimension that is at least

A

10cm

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12
Q

In what region of the radiofrequency radiation (RFR) spectrum do most radar operate?

A

Microwave.

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13
Q

Which is an example of radiofrequency radiation (RFR) emitter found on Air Force bases?

A

Electronic countermeasures.

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14
Q

Which is an example of an indirect effect of radiofrequency radiation (RFR)?

A

Electronic interference.

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15
Q

Which radiofrequency radiation (RFR) emitter should be the highest priority during the evaluation phase?

A

Ground-level hazard.

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16
Q

When evaluating these radiofrequency radiation (RFR) emitters, which repair and maintenance shops should be a higher priority than routine operations?

A

Short duration.

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17
Q

If you need the radiofrequency radiation (RFR) permissible exposure limit (PEL) for radiation workers that have been trained and understand the hazards of exposure, you should look in the table for which environment?

A

Upper tier.

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18
Q

Which radiofrequency radiation (RFR) environment would describe the exposure for customers at a golf course near an emitter?

A

Lower tier.

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19
Q

What step is first in any radiofrequency radiation (RFR) hazard distance calculation?

A

Determine the average power.

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20
Q

Multiplying peak power (in watts) by duty factor (DF) yields the average power for what type of system?

A

Pulsed wave.

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21
Q

What step must you take after obtaining radiofrequency radiation (RFR) meter readings in order to find the real power density?

A

Multiply by the correction factor.

22
Q

When performing radiofrequency radiation (RFR) measurements, always start

A

further away from the antenna than the calculated distance.

23
Q

Where should the surveyor hold the probe while conducting radiofrequency radiation (RFR) measurements?

A

In front of surveyor’s body.

24
Q

Which radiofrequency radiation (RFR) control is specifically required for upper tier areas where frequencies are below 30 MHz?

A

Electrical safety matting.

25
Q

Which type of control is not authorized to control radiofrequency radiation (RFR) exposure?

A

Personal protective equipment (PPE).

26
Q

At the onset of a radiofrequency radiation (RFR) overexposure investigation, make sure the exposed individual gets a

A

medical evaluation.

27
Q

You must forward all documentation of radiofrequency radiation (RFR) overexposure investigation to the Air Force Institute for Occupational Health (AFIOH) if the exposures may have exceeded

A

five times the PEL.

28
Q

Which laser property means the laser beam is emitted as a tight column of light that does not spread out, or “diverge” much as it travels away from its source?

A

Collimated.

29
Q

The three components required for a laser to operate are laser medium, optical cavity, and

A

pumping system.

30
Q

Which laser classification is incapable of causing injury during normal operation?

A

Class 1.

31
Q

What is the most common cause of laser-induced tissue injury?

A

Thermal

32
Q

Which hazard is a non-beam hazard associated with the use of lasers?

A

Compressed gases.

33
Q

Which laser does not require a laser hazard evaluation?

A

Class 1.

34
Q

Which is not one of the three primary operational aspects that influence a laser hazard evaluation?

A

Nominal Hazard Zone.

three primary operational aspects
* Personnel or populations exposed to laser radiation.
* Laser system’s capability to cause injury.
* Environment in which the laser is used.

35
Q

What is often limited indoors by the walls and ceilings of the room where the laser is used?

A

Nominal hazard zone (NHZ).

36
Q

The nominal hazard zone (NHZ) is the space within which the level of the direct, reflected, or scattered radiation during normal operation exceeds

A

the applicable maximum permissible exposure limit.

37
Q

For outdoor operations, the nominal hazard zone (NHZ) may be limited somewhat by

A

Terrain

38
Q

The distance from a laser to a point where the energy of the beam falls below the ocular maximum permissible exposure level is

A

Nominal ocular hazard distance (NOHD).

39
Q

Which skin cover fabric provides the best protection against lasers?

A

Tightly woven.

40
Q

Which method is an example of an administrative control for the use of lasers?

A

Safety training.

41
Q

Which person delegates authority to the Installation Laser Safety Officer (ILSO) to suspend operations involving the operation of laser or other optical radiation sources that pose a significant health risk to personnel?

A

Installation commander.

42
Q

Within how many duty days of completion of a laser incident investigation does the installation laser safety officer (ILSO) forward a detailed report to installation public health, bioenvironmental engineering (BE), safety, legal office (JA), major command (MAJCOM) BE, and Air Force Medical Support Agency.

A

30

43
Q

Within what spectral region of the electromagnetic spectrum does ultraviolet radiation fall?

A

100–400 nanometers.

44
Q

Which condition can be attributed to repeated exposure to ultraviolet radiation by the skin?

A

Erythema.

45
Q

Which action provides the most effective method of controlling overexposure to natural ultraviolet radiation?

A

Limiting exposure time.

46
Q

Near-infrared radiation is closest in wavelength to what region of the electromagnetic spectrum?

A

Visible light.

47
Q

In which item would near-infrared radiation be used?

A

Television remote.

48
Q

Which biological effects can be associated with an overexposure to infrared radiation?

A

Corneal burn.

49
Q

Which control principle, when applied to infrared radiation, results in a reduction in total dose?

A

Time.

50
Q

When determining infrared radiation hazard controls, selection of a barrier is dependent upon

A

wavelength.

51
Q

Upon what timeframe are the threshold limit values (TLV) for an occupational exposure of the eyes to near-infrared radiation based?

A

8-hour workday.

BIO EOC (6 decks)

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