ASNT Industrial Radiography Radiation Safety Questions And Answers All Included 2023

ASNT Industrial Radiography Radiation Safety Questions And Answers All Included 2023 In the early years of radiography, what caused personnel to be overexposed? - ANS Poor equipment design, lack of understanding, lack of and poor safety practices. In what year did Marie Curie discover radium? - ANS Late 1898 Who coined the term radioactivity? - ANS Marie and Pierre Curie In the early years of radiography from , the maximum thickness that could be inspected via X-radiation was steel? - ANS 3" (7.62 cm) Historically, it has been proven that the predominant cause of overexposures is: - ANS Improper surveys, the source being left in an uncontrolled state, the source not being locked once retracted to the shielded position The responsibility to adhere to the regulations, license conditions and company policies falls to: - ANS The radiographer Alpha particles were discovered by: - ANS Henri Becquerel The first medical X-ray was conducted at: - ANS Massachusetts General Regulations from one state to the next are essentially the me for radioactive materials - ANS True A radiographer has several avenues to seek guidance and counsel. The first person he or she can turn to is? - ANS their program's radiation safety officer (RSO) The origins of industrial radiography can be attributed to: - ANS Wilhelm Rontgen The two basic types of radiation are: - ANS particulate and electromagnetic Wavelike radiation travels at: - ANS at the speed of light without regard to pressure, temperature or magnetic fields Gamma rays travel in a wavelike motion at the speed of light, which is: - ANS 186 000 miles/s (299 338 km/s) Matter can be turned into energy. - ANS True Alpha particles are much like a helium nucleus as they have: - ANS two protons, two neutrons and two electrons Beta particles have a/an: - ANS Negative charge Alpha particles have a/an: - ANS Positive charge Beta particles have a mass: - ANS much less than that of an alpha particle In modern radiography the alpha and beta particles are of little concern because: - ANS They travel at sub-light speeds and as such are easily obtained or shielded X-radiation is created by applying a: - ANS high voltage direct current across the cathode of a vacuum tube X-rays are produced by an X-ray tube by the: - ANS passage of electrons across the tube striking the target Radio waves, microwaves and infrared waves are types of: - ANS Nonionizing radiation The neutron has an atomic mass of: - ANS 1 AMU · The shorter the wavelength or higher the frequency, the greater the penetration; as such: - ANS primary beams have greater penetrability than secondary beams Elementary particles with a unit negative electrical charge and a mass approximately equal to 1/1840 that of - ANS Electrons The atomic weight of an atom is the combination of the total number of protons and neutrons held in the nucleus. This is also known as the: - ANS "A" number Gamma rays are affected by magnetic fields. - ANS False As a radioisotope decays, the elements return to a stab' state by undergoing several steps; once complete the material continues to produce radiation: - ANS false After 148 days, Ir-192 would have undergone half lives? - ANS 2 Activation is the process of bombarding material with: - ANS excess neutrons The total number of _________ identifies an element. - ANS protons Gamma radiation has a shorter wavelength than visible light, therefore making it: - ANS More penetrating Overexposures to personnel can result in: - ANS cancer, genetic defects carried into further generations, and death All radiation exposures are equally serious and can result - ANS False Ionizing radiation passes through the entire body; as such, damage can occur to the: - ANS skin, internal organs and muscles Prompt effects of radiation exposure to acute doses include: - ANS blood changes, nausea and fatigue Industrial radiography, being one of the most dangerous jobs in the world, has killed: - ANS only one member of the public is known to have died in the world ALARA means: - ANS As low as reasonably achievable The maximum occupational dose for a minor is: - ANS 10% that of an adult radiographer or 5 mSv or 0.5 rem The alpha particle is: - ANS more damaging than the gamma ray The alpha particle has a quality factor of: - ANS 20 Radiation can be detected by the human senses - ANS False Which of the following detects, measures, or in some way records ionizing radiation? - ANS a. thermoluminescent dosimeter b. film badge c. pocket ion chamber (dosimeter)