IRRSP Test Questions Xray NDT/NDE Questions and Answers Ready Passed

IRRSP Test Questions Xray NDT/NDE Questions and Answers Ready Passed Specific emission Constant for Co60 is? 14R/Hr/ci @ 1ft Specific emission Constant for Ir192 is? 5.2 R/Hr/ci @ 1ft Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:05 / 0:15 Full screen What is the Half Life for Ir192? 74 days What is the Half life for co60 ? 5.3 years In the beginning of Radiography, Wilhelm Conrad Rontgen scientist won the Nobel prize and how did he get to do this ? in 1896 while investigating phosphorescence in uranium salts, he accidentally discovered radioactivity . as he was investigating the work of Mr rontgen , Becquerel wrapped a fluorescent substance , potassium Henri Becquerel gamma radiography got its start in the united states in 1929 at a naval research laboratory. the navy wanted a method to inspect think steel casting , but x ray available at the time were limited to 3 in" using radium it was possible to inspaect thhinknesse in the range of 10" in to12" in these radiographs were achieved by a method called fishpoling Early Gamma Radiography fishpoling required a radiographer to hold a weak radium source to a long rod for the time length of the exposure, or to prop the fishpole through a rig to hold it steady. Fishpoling manufactured gamma-ray sources and cobalt become available in what year ? 1946 . Ernest Rutherford Alpha particles were discovered by ? poor equipment design, lack of understanding, lack of poor safety practices. in the early years of radiography, what caused personnel to be overexposed? late in 1898. in what year did Marie Curie discover radium? Marie and Pierre Curie Who coined the term radioactivity? 3" in. (7.62 cm) In the early years of radiography from , the maximum thickness that could be inspected via X-radiation was__________ of steel? -improper surveys -the source being left in an uncontrolled state -the source not being locked once retracted to the shielded position Historically, it has been proven that the predominant cause of overexposures is? the responsibility to adhere to the regulations, license conditions and company policies falls to the radiographer Ernest Rutherford Alpha particles were discovered by? Massachusetts General The first medical X ray was conducted at? true Regulations from one state to the next are essentially the same for Radioactive materials (RSO) Their program's radiation safety officer A radiographer has several avenues to seek guidance and counsel. The first person he or she can turn to is? Wilhelm Röntgen the origins of industrial radiography can be attributed to? particulate and electromagnetic The two basic types of radiation are ? at the speed of light with out regard to pressure, temperature or magnetic Wavelike radiation travels at? 186000 miles/s (299 338 km/s) Gamma rays travel in a wavelike motion at the speed of light, which is? true Matter can be turned into energy ?