4 - Unit review exercises

Question 1

59. (639) What approach does the Air Force (AF) use to manage and control ionizing
    radiation exposures to the workforce and to the general public by employing methods to keep
    exposure to a minimum?
    a. Eliminate all exposures.
    b. As low as can be achieved.
    c. Eliminate unsafe exposures.
    d. As low as reasonably achievable.

Answer 1

d. As low as reasonably achievable.

Question 2

60. (640) The inverse square law regarding a person’s exposure to radiation has such an effect that moving away
    a. double the distance from a point source reduces the exposure by a factor of 4.
    b. double the distance from a point source reduces the exposure by a factor of 2.
    c. 1/2 the distance from a point source reduces the exposure by a factor of 1/2.
    d. 1/3 distance from a point source reduces the exposure by a factor of 1/3.

Answer 2

a. double the distance from a point source reduces the exposure by a factor of 4.

Question 3

61. (640) Coveralls and gloves will prevent what type of radiation from potentially harming a
    person’s skin?
    a. Photon.
    b. Neutron.
    c. Alpha and beta.
    d. Gamma (γ) and X-ray.

Answer 3

Alpha and beta.

Question 4

62. (641) The primary source for depleted uranium intake by the general public is
    a. transport aircraft.
    b. food and drinking water.
    c. uranium mining facilities.
    d. areas where depleted uranium munitions have been used.

Answer 4

food and drinking water.

Question 5

63. (641) As it decays, depleted uranium particles emit which type(s) of radiation?
    a. Alpha.
    b. Gamma (γ).
    c. Alpha and beta.
    d. Alpha, beta, and gamma.

Answer 5

Alpha, beta, and gamma.

Question 6

64. (642) As it decays, radon gas emits which type(s) of radiation?
    a. Alpha.
    b. Gamma (γ).
    c. Alpha and beta.
    d. Alpha, beta and gamma.

Answer 6

Alpha, beta and gamma.

Question 7

65. (642) The only documented health effect from exposure to the airborne radon and its
    decay products are an increased risk of
    a. emphysema.
    b. lung cancer.
    c. pancreatic cancer.
    d. thyroid nodular disease.

Answer 7

lung cancer

Question 8

66. (643) What section recycles and disposes of radioactive waste and mixed waste generated
    by Air Force (AF) operations?
    a. United States Air Force School of Aerospace Medicine (USAFSAM) Radioanalytical
    Laboratory.
    b. Air Force Radioactive Recycle and Disposal (AFRRAD) office.
    c. Nuclear Regulatory Commission (NRC).
    d. Air Force Medical Support Agency.

Answer 8

Air Force Radioactive Recycle and Disposal (AFRRAD) office.

Question 9

67. (643) Who on your base coordinates recycling and disposal requests for radioactive
    waste?
    a. Defense Reutilization and Marketing Service.
    b. Installation radiation safety officer (IRSO).
    c. Environmental management.
    d. Wing safety office.

Answer 9

Installation radiation safety officer (IRSO).