ASNT STUDY GUIDE: Industrial Radiography Radiation Safety/IRRSP CERTIFICATION TEST STUDY SET/ASNT QUESTIONS & ANSWERS LEVEL 2

ASNT STUDY GUIDE: Industrial Radiography Radiation
Safety/IRRSP CERTIFICATION TEST STUDY SET/ASNT
QUESTIONS & ANSWERS LEVEL 2

Low-voltage X-ray tubes are generally fitted with windows made of - Correct Answers beryllium
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Il` The projected area of the target of an X-ray tube is called the - Correct Answers effective focal
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Il` The general method of producing X-rays involves the sudden deceleration of high-velocity
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Il` electrons in a solid body called a - Correct Answers target Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il`




Il` If it were necessary to radiograph a 7in thick steel product, which of the following gamma-ray
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Il` sources would most likely be used? - Correct Answers Co-60
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Il` A Co-60 gamma-ray source has an approximate practical thickness limit of - Correct Answers 8
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Il` in. of steel or its equivalent
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Il` The absorption of gamma rays from a given source when passing through matter depends on -
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Il` Correct Answers the atomic number, density, and thickness of the matter.
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Il` The fact that gases, when bombarded by radiation, ionize and become electrically conductible
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Il` makes them useful in - Correct Answers radiation detection equipment
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Il` The velocity of electrons striking the target in X0ray tube is a function of the - Correct Answers
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Il` voltage difference between the cathode and anode.
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, Il` The uneven distribution of developed grains within the emulsion of a processed X-ray film causes
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Il` the subjective impression of - Correct Answers graininess
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Il` Co-60 is reported to have a half-life of 5.3 years. By how much should exposure time be increased
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Il` when the source is 2 years old? - Correct Answers Exposure time should be about 37% longer
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Il` A source of Ir-192, whose half-life is 75 days, provides an exposure of a given test object today in a
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Il` period of 20 min. Five months from now what exposure time would be required? - Correct
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Il` Answers 1 hour and 20 min Il` Il` Il` Il` Il` Il` Il` Il`




ASNT STUDY GUIDE: Industrial Radiography Radiation Safety/IRRSP CERTIFICATION TEST STUDY
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SET
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THE SYMBOL (R) MEANS - Correct Answers ROENTGEN
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Il` The acronym RAD means - Correct Answers radiation absorbed dose
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Il` The roentgen (R) exposure is measured in - Correct Answers AIR
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Il` The symbol mR means - Correct Answers milliroentgen
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Il` One roentgen or 1 R is equal to - Correct Answers 1 milliroentgen
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Il` The acronym rem stands for - Correct Answers roentgen equivalent man
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Il` The initialism QF stands for - Correct Answers quality factor
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Il` The quality factor for X-ray and gamma rays is - Correct Answers 1
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