IRRSP Practice Test Questions And Answers Verified 100% Correct

IRRSP Practice Test Questions And Answers Verified 100% Correct D - ANSWER -Whenever an exposure device is not under the direct surveillance of a radiographer or his assistant, it must: (ANSWER with A, B, C, or D) a. Be locked and hidden from view b. Be locked and chained to a fence c. Be locked and placed next to the transport vehicle d. Be locked with the key removed, then locked within a designated storage area C - ANSWER -Source guide tubes are primarily used to: (ANSWER with A, B, C, or D) a. Provide some shielding of the sealed source during transit to and from the exposure device b. Provide a visual indication where the sealed source will travel c. Provide a protected means to project the sealed source to and from the exposure device to a fixed focal point d. Provide a handle to drag the exposure device from one location to another 50 mR/hr - ANSWER -An exposure device containing 95 Curies of Iridium-192 has a surface radiation level of 100 mR/hr. After 74 days, what would be the expected radiation level on the surface of the exposure device? a. 47.5 Curies b. 50 mR/hr c. 100 mR/hr d. 47.5 mR/hr 0.957 R/hr - ANSWER -The radiation intensity at 1 foot from an Iridium-192 source is 598 R/hr. What is the radiation intensity at 25 feet from this source? a. 0.957 R/hr b. 0.010 R/hr c. 23.90 R/hr d. 5.980 R/hr 500 mR/hr - ANSWER -Alarm rate meters are required to sound an audible warning at what radiation intensity? a. 500 Rem b. 2 mR/hr c. 500 mR/hr d. 200 mR/hr A - ANSWER -During a radiographic exposure the radiographer and the assistant radiographer should: (ANSWER with A, B, C, or D) a. Maintain continuous direct surveillance of the High Radiation area and perform a survey of the Restricted area boundary to ensure 2 mR/hr or less b. Survey the High Radiation and Restricted area boundaries to confirm proper Placement c. Process film during the exposure to increase productivity d. Catch up on paperwork requirements B - ANSWER -The USNRC's requirements for industrial radiography are contained in the following regulations: (ANSWER with A, B, C, or D) a. 49 CFR Parts 171-179 b. 10 CFR Parts 19, 20, 21, 30, 34, 71 c. 49 CFR Part 99 d. Nureg 1600 C - ANSWER -In controlling exposure to x-rays, which of the following is true? (ANSWER with A, B, C, or D) a. Shielding may be less effective than with gamma radiation due to the continuous nature of x-rays b. Working distance calculations must take into account the build-up factors c. High Radiation and Restricted area boundaries must be posted under the same requirements as when using gamma radiation sources d. Because x-ray machine produce noise when energized, personnel in close proximity to the tube head would be alerted, making use of x-ray systems slightly more safer D - ANSWER -X-ray machine control panels must: (ANSWER with A, B, C, or D) a. Include a dose rate measurement from a detector positioned near the tube head that verifies x-rays are being produced b. Have a dead-man switch that must be continuously pressed by a radiographer in order for the x-ray machine to generate x-rays c. Have a series of lights that sequence from green, to yellow, to red when an exposure is initiated d. Have a positive visual indication that x-rays are being produced B - ANSWER -For x-radiography conducted in shielded, enclosed and lockable exposure rooms, the doors or other barriers must: (ANSWER with A, B, C, or D) a. Be made of concrete, steel or lead b. Be capable of being opened from the inside of the exposure room, even if locked from the outside c. Be under visual surveillance by the radiographer whenever opened d. Be capable of reducing radiation levels to less than 5 mR/hr 127 feet - ANSWER -Using a 50 Curie Iridium-192 source and a 3 HVL collimator, what is the distance a radiographer must place the Restricted area boundary? a. 19 feet b. 127 feet c. 222 feet d. 81 feet C - ANSWER -The primary reason over-exposures to radiography personnel occur is due to: (ANSWER with A, B, C, or D)