STUDY GUIDE

STUDY GUIDE

1. The fundamental building blocks of atoms include:

1. neutrons, protons, electrinos2. electrons, protons, betatrons3. protons, electrons, neutrons4. positrons, electrons, neutrons

2. Three types of ionizing radiation are:

1. Alpha particles, Beta particles, Gamma particles2. Alpha particles, Beta particles, Radio waves3. Gamma rays, Infra Red rays, Beta particles4. Beta particles, Gamma rays, Alpha particles

3. Most all shielding for exposure devices used today is made of:

1. Depleted uranium2. Lead3. Depleted Radium4. Tungsten

4. For Industrial Radiography, which is the most penetrating form of radiation?

1. Beta particles2. Neutrons3. Gamma Rays4. Alpha particles

5. One of the effects of Gamma rays is its ability to cause:

1. Ionization2. Air to become energized3. Other objects to become radioactive4. Metal to become magnetized

6. The unit of measurement of radioactivity is referred to as:

1. Curies2. Roentgens3. Roentgens per hour4. REM

File: Study GuideRevised 5/12/08

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7. One curie is the quantity of radioactive material that decays at the rate of:

1. 3.7 X 1010 CPM2. 3.7 X 1010 DPS or TPS3. 3.7 X 1010 XPS4. 37 X 10 DPS or TPS

8. Elements are classified in the Chart of Elements by the number of:

1. Electrons in an atom2. Neutrons in an atom3. Protons in an atom4. Includes all the above

9. X-rays differ from Gamma rays only in their

1. Atomic structure2. Origin3. Wave length4. Emission of particle radiation

10. One curie of cobalt 60 and one curie of IR-192

1. Have the same dose rate at one yard2. Both have the same number of disentergrations per second3. Will weigh the same amount4. None of the above

11. The time required for ½ of the atoms of a particular radioactive material to disintegrate or decay is called

1. A curie2. Ionization3. Half-Life4. Decay

12. Gamma rays will penetrate deeper in matter than Alpha or Beta particles because1. It has less mass2. It has a lower frequency3. It will interact less with electrons in matter4. It travels faster than the speed of light

13. The half-life of IR-192 is1. 74 days2. 3 months3. 80 days4. 6 months


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14. Gamma rays are referred to as1. Particle radiation2. Electromagnetic radiation3. Scattered radiation4. Primary radiation

15. The two most commonly used isotopes for radiography are:1. CO-60 and CS-1372. IR-192 and RA-2263. IR-192 and CO-604. CO-59 and IR-190

16. The half-life of cobalt 60 is a little over 5 years. After 3 half lives, a 60 ci CO-60 source will have how many curies?

1. 15 curies2. 7.5 curies3. 30 curies4. None of the above

17. Radiation energy is usually expressed in terms of:

1. Curies per gram2. Roentgens per hour3. KEV or MEV4. Megahertz of Hertz

18. One curie of Cobalt 60 and one curie of IR-192

1. All have the same dose rate at one foot.2. All are equal in physical size3. All have the same number of D. P. S or T.P.S.4. All are the same weight of material.

19. When an electron is knocked out of orbit of an atom by a gamma ray

1. An Ion-pair is created2. Pair production occurs3. The atom is now radioactive4. A new element is created

20. The operating range of a pocket dosimeter required for industrial radiographers is1. 0 to 100 mrr2. 0 to 200 mr3. 0 to 500 mr


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4. 0 to 200 r\hr

21. Survey meters must be calibrated every

1. 90 days2. 6 months3. 3 months4. Once a year

22. The film badge or TLD badge provides:

1. Immediate indication of radiation exposure2. Exposure to Alpha particles3. Record of radiation exposure4. All of the above

23. Film badges should be worn:

1. In the shirt pocket2. One the belt loop3. Between the shirt collar & trouser pocket4. Back pocket

24. Radiation survey instruments shall be able to measure from:

1. zero mr/hr to 2 R/hr2. 2 mr/hr to 1 R/hr3. 0 mr/hr to 1 mr/hr to 1 R/hr4. 1 mr/hr to 1000mR

25. Most survey meters used to detect radiation in Industrial Radiography operations, us a

1. scintillation counter2. Geiger-Muellier (GM) tube3. Ion – Chamber4. De-Ionization tube

26. Individuals allowed to enter a radiographer’s radiation area, must be monitored with the following items:

1. a survey meter2. A film badge, dosimeter, survey meter3. Film badge and dosimeter and alarming Rate meter4. No monitoring required


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27. If an individuals pocket dosimeter is discharged beyond its range (off-scale), the individual:

1. Shall cease operations and have film badge processed immediately and not return to work until a determination has been made.2. Shall notify the RSO and wait for further instructions after completing job

assignment.3. May continue to work if individual determines that dosimeter reading is not

correct.4. Shall cease operations and have film badge exchanged for a new one and then

may return to work.

28. The pocket dosimeter has the advantage of:

1. Providing immediate indication of radiation dose2. Provides a permanent record of whole body dose3. Being more accurate than the film badge4. Gives dose rates of radiation exposure

29. Radiation received in a short period of time is referred to as:

1. Acute radiation exposure2. Chronic radiation exposure3. Thermal radiation exposure4. Radiation sickness

30. Earliest detection of radiation damage may be detected in the:1. Nerve cells2. Skin cells3. Blood cells4. None of the above

31. The effects of radiation on the reproductive cells and passed on to the descendants, is called:

1. Somatic effects2. Radiosensitive effects3. Latent effects4. Genetic effects

32. The area that has a boundary posted “Caution-High Radiation Area” will mean a person could receive a radiation dose of:

1. Five Rems per hour2. 200 mRems per hour


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3. Fifty mRems per hour4. One hundred mRems per hour

33. “Source assembly” refers to the same thing as a:

1. Crankout2. Source tube3. Pigtail assembly4. Bull plug or safety plug

34. A person must be of what age to be allowed to handle radioactive material.

1. 21 years of age2. 16 years of age3. 18 years of age4. None of the above

35. The thickness of a material which will reduce the amount of radiation passing through the material to one-half its initial intensity is called the:

1. Half Life Layer2. Half Value Layer3. Shielded Half Layer4. Half Layer

36. Using Co-60, at a certain distance, the radiation intensity is 600 mr/hr. The thickness of lead (assuming .490” of lead is required for Co-60) needed to reduce the radiation levels to 75 mr/hr is:

1. 14.7”2. .98”3. 1.5”4. 1.96”

37. If the radiation intensity at a certain point is 20 R/hr, how many half valve layers are required to reduce the levels to 5 R/hr

1. One2. Three3. Two4. Cannot reduce to 5 R/hr

38. Planetary electrons with protons and neutrons in the nucleus, make up”

1. An alpha particle2. A molecule


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3. A compound 4. An atom

39. The annual whole body radiation dose limit which can be received by an individual working in radiography can basically be stated as:

1. 1 ¼ Rems a year2. 5 Rems a year3. 3 Rems a year4. 420 mRems a year

40. The thickness of a material which will reduce the amount of radiation to nine – tenths of its initial intensity is called:

1. Half value thickness2. Attenuation Layer3. Tenth value Layer4. Safety shield Layer

41. The radiation dose rate at a certain distance from a source is 400 mr/hr. If a person remains at the certain distance for 3 hours, what will be the amount of radiation received?

1. 9 mr2. 1800 mr3. 1200 mr4. 120 mr

42. Three basic ways to lower radiation dose when working with radiography sources are:

1. concrete, Lead, and steel2. barricades, ropes, and signs3. time, distance, and shielding4. Half Valve Layers, Tenth Valve Layers, First Valve Layers

43. A state receiving authority from the NRC to regulate activities or use of radioactive materials and equipment is called:

1. An Non - Agreement State2. A Mutual Agreement State3. Regional Agreement State4. An Agreement State

44. A leak test must be performed on sealed sources within a period of every:


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1. 90 days2. 6 months3. 120 days4. Once a year

45. The term used to let a company, with a radioactive material license in one state, be allowed to work in another state is called:

1. Bill of Rights2. Agreement State3. Reciprocity4. NRC

46. The shipping container for most industrial radiography sources are classified as:

1. Type B2. Type LSA3. Type A4. Type RAM

47. How much radiation will a person receive standing 100 feet from a source with a dose rate of 20 mr/hr where 4 exposures were made lasting 3 minutes each?

1. 4 mr/hr2. 36 mr/hr3. 12 mr/hr4. 33 mr/hr

48. If you were using a 100 Ci., Ir-192 source, what will the dose rate be at a distance of 100 feet from the source?

1. .06 R/hr2. 5 R/hr3. .059 R/hr4. 52 R/hr

49. Repeat problem 48 except calculate the dose rate at 200’ instead of 100’”

1. 12.5 r/hr2. .05 mr/hr3. 50 mr/hr4. 14.75 mr/hr

50. Radiography companies doing work in a Non – Agreement State are regulated by the:

1. A E C


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2. D O T3. U S N R C4. N A S

51. When performing offshore platform or lay barge radiography, the largest source of Ir-192 that is allowed is:

1. 100 Ci.2. 200 Ci.3. 240 Ci.4. 50 Ci.

52. The film badge or TLD badge used in industrial radiography are exchanged:

1. Once every quarter2. Only when the RSO decides to change your badge3. Once every sixty days4. Once a month and on the day indicated on the badge

53. The single and most noticeable factor in the cause of over – exposures to radiographers has been:

1. Not locking the source in the camera properly2. Survey meter not working correctly3. By not using the survey meter as stated in the company procedures and State

regulations.4. Trying to put the source back into the camera after a disconnect.

54. If you lose or damage your film or TLD badge, you will

1. Cease work immediately until the badge is replaced2. Continue to work and replace your badge when you get back to the office3. Continue to work since you can use your dosimeter for your radiation exposure4. Work more carefully by using your survey meter and dosimeter

55. If an individual’s pocket dosimeter is discharged beyond its range (off scale), the individual shall:

1. Make a note on the area survey report and recharge the dosimeter2. Tell the RSO when you get back to the office so he can calculate your exposure

for that day.3. Cease work immediately, turn film badge in for processing; and not return to

work until results are received and determination of the exposure has been made4. Cease work immediately, notify your RSO, and obtain a spare badge to use until

results of processed film badge is received


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56. “Radiation Area” means an individual could receive a radiation dose in excess of:

1. Five milli-rem in any one hour2. Two hundred milli-rems in any one hour3. 2 milli-rems in any one hour4. 5 milli-rems per hour or a dose in excess of 100 milli-rem in any fire consecutive

days

57. Pocket dosimeters shall be calibrated for correct response to radiation at periods not to exceed:

1. Annually2. Once every 6 months3. Not required to be calibrated4. After each repair

58. Any vehicle transporting radioactive material with a yellow III label must placard the vehicle with signs printed:

1. Caution – Radioactive2. Radioactive Materials3. Radioactive4. Danger – Radioactive

59. Sealed radiography sources, when completing shipping papers, are referred to or classified as:

1. Solid form material2. Safe form material3. Normal form material4. Special form material

60. The dose rate limit at one meter (or 39 inches) from a package containing radioactive material is expressed in terms of a:

1. Transport Index2. Type A package3. Special solid form material4. Meter reading at 3 feet


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61. The outer package that encloses a Type B container for additional shipping protection is referred to as:

1. Class A package2. Overpack3. Hazardous Materials4. None of the above

62. A leaking source must be withdrawn from use if contamination levels exceed:

1. .005 microcuries of Removable Contamination2. .050 microcuries of Removable Contamination3. .010 microcuries of Removable Contamination4. .500 microcuries of Removable Contamination

63. Using a 100ci, Ir – 192 source, at what distance will the dose rate be 100mr/hr?

1. 140 feet2. 76-feet3. 68 feet4. 100 feet

64. A record of inspection and maintenance of radiography equipment and sources are completed by radiography companies :

1. Once a day2. Quarterly3. once a week4. once every 6 months

65. When performing radiography the camera must self lock :

1. After each exposure2. Prior to being moved or transported3. At all times when it is not under direct surveillance of radiographer4. All of the above

66. When must pocket dosimeters be recharged:

1. At the beginning of each shift or at least daily or if the dosimeter reaches ¾ scale during the shift

2. Work out3. Radiographic exposure4. None of the above

67. The unit of exposure in air is the:


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1. RAD2. ROENTGEN3. REM4. RBE

68. The inverse square law means that if you move a source twice as far away as before, the intensity is:

1. Twice as great2. Half as great3. One-fourth as great4. One-half as great

69. The State Regulatory Agency may order a radiographer to cease operation if the following is found during an inspection:

1. Off-scale pocket dosimeter2. Leaking source3. Unsafe camera (lock of camera not working properly)4. All of the above

70. The most biological damage for a given dose of radiation occurs when the exposure is to:

1. Feet and ankles2. Skin3. Reproductive organs4. Whole body

71. The principal hazard in industrial radiography results from:

1. External radiation2. Cosmic and Natural background radiation3. Alpha and Beta particles4. Concentration

72. One making a radiograph shall display “Caution Radiation Area” signs at what mr/hr level?

1. 100 mr/hr2. 50 mr/hr


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3. 2 mr/hr4. .6 mr/hr

73. The level of radiation from a radioactive source, in a storage device or camera, cannot exceed_______ to be classified as a Type B package:

1. 200 mr at the surface of the camera2. 200 mr at the surface nor more than 50 mr at 6 inches3. 50 mr at the surface of the camera nor more the 1 mR at one meter4. 100 mr at the surface or 50 mr at 6 inches

74. A radioactive yellow II warning label is applied to packages with a surface dose rate:

1. Not to exceed 50 mr/hr at the surface or 1 mr/hr at 1 meter (39in)2. Not to exceed 200 mr/hr at the surface of 10 mr/hr at 1 meter (39in)3. Not to exceed 10 mr/hr at 1 meter (39in)4. Not to exceed 2 mr/hr at 1 meter (39in)

75. Vehicles carrying only White 1 or Yellow II warning labeled packages:

1. Must display placards on all four sides of the vehicles2. Are not required to have shipping papers3. Do not need to display radioactive placards4. Must be shipped in a Type C container

76. The type of warning label that must be applied to the surface of a package containing radioactive material is determined by:

1. The weight of the material2. The transport ending3. The highest dose rate at the surface and at 1 meter from the surface of the package4. The type or design of the shipping container

77. REM is the unit of radiation dose (the abbreviation means):

1. Roentgen Equivalent in Man2. Roentgen Equal to Millicuries3. Radiation Equal to Man4. Radiation Equivalent to Mass

78. One curie can be expressed in another way, such as:

1. 3.7 x 10 DPS2. 1,000,000 micro Ci


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3. 10,000 mCi4. All of the above

79. At a distance of one foot from one curie of a radioisotope, the exposure dose rate would be approximately:

1. 5.9 roentgens per hour2. 14.4 milliroentgens per hour3. .61 mev per hour4. dependent upon the radioisotope

80. The electron volt is a:

1. large unit of charge2. small unit of volume3. small unit of energy4. Angstrom unit

81. Permissible levels of radiation from external sources in unrestricted areas cannot receive a dose in excess of:

1. 5 mr/hr in any one hour2. 2 mr/hr in any one hour nor more than 100 mr per year3. 100 mr in 7 consecutive weeks4. Items 2 and 3

82. Before removing a camera with a radioactive source from the storage area, the radiographer must sign the device out on the:

1. Transportation papers2. The area survey report3. Dosimeter report4. Utilization log

83. Some of the records required at temporary job sites are:

1. Appropriate license2. Appropriate Operating & Emergency Procedures3. Applicable Agency Regulations4. All of the above

84. The sealed source shall be locked in the radiographic exposure device or source changer:

1. Each time the sealed source is returned to its shielded position


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2. After completing the last radiograph before moving camera to next location3. Each time the sealed source is returned and the key removed4. When getting ready to return camera and source to the truck for storage

85. Radiographs must be made of 4” pipe. With only 35 Ci. Of Ir-192 and being unable to use your collimator, your meter reading is 100 mr/hr at a distance of 50’. You must limit your number of exposures per hour. What is your radiation exposure rate at 25’?

1. 200 mr/hr2. 800mr/hr3. 400 mr/hr4. 40 mr/hr

86. A radiographer shall conduct an inspection and maintenance of equipment:

1. Once every week2. At intervals not to exceed one month3. After arriving at the job site4. At the beginning of each day of equipment use

87. Vehicles used to transport Yellow II labeled radioactive material for temporary job site use must prominently display”

1. “Radioactive” placards2. Name and city of main business office of Company3. “Caution radioactive material” signs4. None of the above

88. A radiation survey performed to determine that a sealed source is in its shielded position upon job completion is referred to as a:

1. Lock-out survey2. Radiation survey3. Area survey4. Transportation survey

89. Radioactive material records of a radiography company are required to show:

1. Contamination levels of the shipping containers2. Receipt, transfer, and disposal of source of radiation3. The focal point of the radioactive source4. Semi annual inventory of radioactive sources

90. What is considered to be a fatal dose to radiation if applied to the whole body in a single exposure?


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1. 150 to 250 Rem2. 1000 to 5000 Rem3. 400 to 500 Rem4. 350 to 450 Rem

91. The most practical use of shielding in radiography can be achieved by the use of:

1. Concrete blocks2. Lead bricks3. Depleted uranium4. Tungsten collimators

92. A survey of the radiographic exposure device after each exposure consists of:

1. Surveying the front of the camera2. Surveying the circumference of the camera3. Surveying the circumference of the device and the entire length of the guide tube.4. Looking at the survey meter to see if it gives any indication of a radiation dose

rate

93. The person who is credited with the discovery of x-rays was

1. Henri Becquerel2. Marie & Pierre Curie3. Albert Einstein4. Wilhelm Roentgen

94. Humans have always been exposed to radiation occurring from:

1. Natural background2. Cosmic3. Man made4. All of the above

95. The amount of radiation the general public receives from natural back ground radiation and man-made radiation in a year is about:

1. 100 mRem2. 200 mRem3. 500 mRem4. 250 mRem

96. If a person recieves a dose of 60 mRems after 15 minutes in a radiation field, what is the dose rate of the radiation field?


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1. 120 mr/hr2. 360 mr/hr3. 240 mr/hr4. 180 mr/hr

97. How much distance would be needed for 30 curies of Ir-192 to reduce the dose rate to 2 mr/hr without any shielding?

1. 300’2. 297.3. 260’4. 305’

98. Immediate notification must be made to the Agency of a dose of radiation to the whole body of any individual in excess of:

1. Five REMS or more2. Twenty-five REMS or more3. Five hundred MILLIREMS or more4. Three REMS or more

99. Personal monitoring equipment shall be supplied to appropriate personnel:

1. Who enters a radiation area2. Who enters a high radiation area3. Who uses or operates any source of radiation4. All of the above

100. An area survey shall be "performed”

1. During the first Radiographic exposure or exposures2. Prior to the first radiographic exposure3. After the restricted area has been established4. During each radiographic exposure

101. A SPEC 150 and AEA 880 are referred to as what type device:

1. Stationary exposure device2. Crankout exposure device3. Panoramic device4. Directional beam device


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102. Your survey meter is designed to detect:

1. X and gamma radiation2. Gamma radiation only3. Alpha, Beta and Gamma radiation only4. X-ray radiation only

103. Radiographers making an exposure, with the radiation area well posted, happens to see an unauthorized person entering into the restricted area, he should:

1. Call to the individual and get their attention to let them know they are in a radiation area and need to receive a film badge.

2. Holler at the individual so he will notice you are working.3. Attract the individual’s attention that he is entering into a restricted area and

should not enter: if person continues to disregard your warning, return the source to its shielded position until the area is cleared of unauthorized personnel.

4. Call to the individual to come stand behind you so you can keep him out of the direction of the gamma rays and warn him that he could become sterile if he does not stay out of the area.

104. In case of a vehicle accident carrying radioactive material, you should:

1. Set out barrier rope and flares as soon as possible to prevent hazards from oncoming vehicles. Get out of the area of the accident so you will not receive an overexposure and call your Radiation Safety Officer.

2. Look for your certificate of insurance for the vehicle and call the insurance company. Send someone to call your RSO and if the source is secured, call for a wrecker to move the vehicle. Check survey meter to see if it is still working.

3. Check your survey meter to see if operable, try to establish location and condition, rope off as large an area as possible, send for police and send for or inform the RSO of accident and procedures taken.

4. Refer to the Operating and Emergency procedures manual so you can give it to the civil authorities on what to do.

105. The ball stop attached to the pigtail of a radiography source is to:


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1. To prevent the source from being pulled out the back of the exposure device and to keep source in a locked position.

2. To keep the cable of the pigtail from becoming bent and the lock block free from obstacles.

3. To act as a guide for the source when it is returned back into the camera.4. To indicate the source is too far back into the camera lock box

106. Surrounded by the depleted uranium in a radiography camera, the metal tubing which allows movement of the source is referred to as the:

1. Brass source tube2. “S” tube3. source tube4. safety tube

107. A sealed radiography source can make other objects radioactive if:

1. The source is left exposed to the object longer than 1 hour2. The source is contaminated3. The source does not emit neutrons4. No it cannot

108. When a radiography source is cranked out of its shielded position in the camera, it travels through a:

1. Hollow plastic tube2. Conduit3. Source tube4. Safety tube

109..Using a 28 curie Ir-192 source with a 4 HVL collimator and an exposure time of 18 minutes at what distance will you establish the radiation area boundary:

1. 30’2. 24’3. 50’4. 16

110. You note that your pocket dosimeter has picked up 2 mr/hr after a 5 minute exposure. What was the radiation dose rate?

1. 40 mr/hr2. 24 mr/hr


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3. 12 mr/hr4. 36 mr/hr

111. The size of a radiography source is important. The use of IR-192 is due to its:

1. Large focal point2. Half Life3. Electromagnetic energy4. High specific activity

112..You have just received a 100Ci. source at the job site. You need to calculate for your 2-mr/hr area. The source is Ir-192, and you will be using a tungsten collimator assuming it has 4 HVL. What is the distance to the 2-mr/hr boundary?

1. 100 feet2. 125 feet3. 134 feet4. 88 feet

113..Your survey meter reads 100 mr/hr at some point. How much dose would you receive standing at that point for ½ hr, 6 min., and 1 min.?

1. 50mr, 10mr,1.67mr2 114mr, 1.75mr, 10mr3 25mr, 10mr, 1.75mr4 50mr, .10mr, 2.5mr

114..The leak test results of a new source, when received by the radiography company, can be found:

1. On the bill of lading from the shipper2. It is not necessary to leak test a new source3. On the decay chart received with the source4. Leak test must be performed 6 months after receiving source

115..When transporting a radioactive source, shipping papers are only needed when:

1. The Yellow III label is required2. For commercial carriers only3. Crossing state lines4. When transporting hazardous materials on public roads

116.. When shall the “reference “ survey be performed:

1. During the first radiographic exposure or exposures2. Before the third radiographic exposure is made at the jobsite3. Before leaving the shop or beginning a new shift offshore


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4. Each time the source is making a radiograph

117..What is the most important thing you can do to avoid an over-exposure to radiation?

1. Record your dosimeter readings after each work shift2. Always wear the personnel dosimetry provided3. Always make proper radiation surveys4. Set the survey meter close to the camera during each exposure on the X100 scale.

118..With a collimator, a 45 Curie IR-192 source indicates an exposure rate of 8,296 mr/hr at 1’. For this same source, the collimator will indicate 2 mr/hr at 60’. The exposure rate of a 35 curie CO-60 source will also be 2mr/hr at what distance using the same collimator?

1. 48 feet2. 86 feet3. 68 feet4. 78 feet

119..The majority of overexposures to radiographers can be summed up:

1. The source was not fully retracted in the camera2. The source becomes jammed in the source guide tube3. Forgetting to retract the source4. Failure to make proper radiation survey

120..Specific Activity is expressed in:

1. Roentgen2. MR3. Curies per gram4. RAD

121..An individual under the age of 18 (a minor) cannot receive a dose of ionizing radiation in excess of

1. 50 % of 5000mR2. 10% of 5000mR3. 25% of 5000mR4. 75 % of 5000mR

122. When removing a radioactive material device from storage a radiographer should have:

1. A calibrated & Operable survey meter


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2. A direct reading pocket dosimeter, OSL, TLD, Film Badge, and an alarming rate meter on his/her person.3. done a batter check on survey meter4. all of the above

123. If an assistant radiographer is told by the radiographer that he should not wear his personal monitoring equipment they should:

1. always obey the radiographer2. wear his dosimeter and rate alarm but not his/her TLD, OSL or Film Badge3. Drag up on the job4. Wear his personal monitoring equipment and notify his supervisor and RSO about the situation as soon as possible.

ANSWER SHEET

QUESTION ANSWER QUESTION ANSWER QUESTION ANSWER

1. 3 41 3 81 22 4 42 3 82 43 1 43 4 83 44 3 44 2 84 15 1 45 3 85 36 1 46 1 86 47 2 47 1 87 28 3 48 3 88 19 2 49 4 89 210 2 50 3 90 311 3 51 1 91 412 3 52 4 92 313 1 53 3 93 414 2 54 1 94 415 3 55 3 95 2


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16 2 56 1 96 317 3 57 1 97 218 3 58 3 98 219 1 59 4 99 420 2 60 1 100 121 2 61 2 101 222 3 62 1 102 123 3 63 2 103 324 2 64 2 104 325 2 65 1 105 126 3 66 1 106 227 1 67 2 107 428 1 68 3 108 329 1 69 4 109 230 3 70 4 110 231 4 71 1 111 432 4 72 3 112 333 3 73 2 113 134 3 74 1 114 335 2 75 3 115 436 3 76 3 116 137 3 77 1 117 338 4 78 2 118 239 2 79 4 119 440 3 80 3 120 3

121 2


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