RADIATION CERTIFICATION TEST pt2

What is the reading of the pocket dosimeter noted below?. 50 mR. 35 mR. 90 mR. 100 Mr.

After making a few exposures, you notice that your pocket dosimeter has gone off scale. Your co worker’s dosimeter is showing an exposure of 5mR. What should you do?. Assume that your dosimeter has malfunctioned, zero it and continue working. Leave the technician at the job site, go back to the shop and get a new dosimeter. Stop working, call your RSO, and have your badge sent in for immediate processing. Call the appropriate state agency to report an equipment malfunction.

Pocket dosimeters must have a range of: 0 to 100 mR. 0 to 200 mR. 2 to 1000 mR. 0 to 500 mR.

What does the following dosimeter indicate?. 17 mR. 180 mR. 180 mR/hr. 18 mR.

Which of the following personnel monitoring equipment is required while performing radiographic operations at a temporary job site?. Film Badge/TLD/other types of personnel dosimetry. Pocket Dosimeter. Alarming Ratemeter. All of the Above.

Which of the following is used to detect the location of the sealed source?. A. B. C.

Which of the following is required to be worn by a radiographer at all times while working with radioactive material?. Film Badge. Pocket Dosimeter. Alarming Ratemeter. All of the Above.

At what intensity must an alarming ratemeter be set to alarm?. 300 mR/hr. 450 mR/hr. 500 mR/hr. 650 mR/hr.

Which of the following would give a reading of the total amount of exposure received?. A. B. C.

A film badge/ TLD records what?. Dose rate. Exposure rate. Total dose history for the period worn. Daily dose.

Identify the area in the source assembly below from which radiation is emitted. A. B. C. D.

Which part of the picture below connects to the drive cable?. A. B. C. D.

What does the image below depict?. A dosimeter. A survey meter. A source changer. An exposure device.

When is it acceptable for an assistant radiographer to use radiographic exposure devices?. Only under the direct supervision of a radiographer. At any time when on a temporary job site. At any time when at a permanent job site. Only when the RSO is present.

A tube through which the radioactive source travels when inside a radiographic exposure device is a/an: Port tube. Guide tube. S tube. Exit tube.

What form is used to maintain a record of where each source is being used, the date of use, time of removal and returning to storage, and the identity of the radiographer to which the device is assigned?. JSA. Quarterly Inventory Report. Utilization Log. Daily Radiation Report.

Companies must perform a physical inventory of radioactive material: Daily. Weekly. Quarterly. Annually.

What sign must be posted where radioactive materials are stored?. Caution: Radiation Area. Caution: Radioactive Material. Caution: Radioactive Material Notify Civil Authorities If Found. Danger Do Not Enter.

An equipment and operational check must be performed by the radiography crew, at a minimum,how often?. At least once each day. At least once a week. At intervals not to exceed 3 months. Annually.

The following must be checked daily on an exposure device. Labels. Locks. Shipping plug. All of the above.

Radiographic equipment exhibiting defects or malfunctions during the daily maintenance inspection shall be __________________. Recorded on the survey report, reported to the RSO, and used cautiously until final repairs are made. Used as long as the defects or malfunctions are not categorized as major. Returned to storage. Tagged, reported to the RSO, and removed from service until repairs are made.

When may radiography be performed without posting the radiation area?. When direct surveillance is maintained. In an exposure room. Never. During short exposures.

Where can you find instruction for the safe operation of ionizing radiation producing equipment and materials?. Quality Systems Manual. Operating and Emergency Procedures. Material Safety Data Sheet. Job Safety Analysis.

Survey instruments with an expired calibration are permitted during radiographic operations when?. A second calibrated instrument is available. It correctly responds to radiation during the daily maintenance Check. It is the only instrument available. It is never permitted to use an instrument with an expired Calibration.

Who is the first person the radiographer should seek guidance from in the event of an emergency?. The NRC. A senior technician. Their state or federal jurisdiction hotline. Their company RSO.

What is the name of the federal agency that regulates radioactive sources and businesses that use and receive radioactive materials?. DEA. NRC. OSHA. DOT.

A collimator should be used, at all times, while performing radiography at a temporary job site except when: The technician says it’s okay. Performing a panoramic exposure. Physically impossible to do so. Prior approval was given by the RSO.

Which of the following conditions would not constitute a radiation emergency requiring notification to the RSO?. A lost or stolen source. A dose in one hour of 20 mrem to a certified radiographer. Damage to an exposure device rendering it inoperable. A dose in one hour of 4 mrem to a member of the public.

Radioactive sources are never to be stored _____________. Within the city limits. Inside a truck. In a residential area. In an industrial park.

How often must leak tests be performed to detect leakage and contamination of source materials?. Monthly. Quarterly. Every 6 months. Annually.

What is the annual occupational dose limit for adults working with radioactive materials?. 2 mRem in any one hour. 5 REM. 500 mRem. 1000 mRem.

How often should field audits for performance be performed on radiographers?. Monthly. Quarterly. At least every 6 months. At least annually.

Any state with which the U.S. Nuclear regulatory commission or the U.S. Atomic energy commission has entered into an effective agreement is called a(n)________________. NRC state. Agreement State. Compliant State. Nuclear State.

When must a vehicle be placarded?. When transporting Radioactive Yellow III material. Any time they are on a public road. Only when traveling on an interstate. When parked in a hotel parking lot.

How long would it take for a 10-curie Co-60 source to decay to 2- 1/2 curies? (Half-life for Co-60 is 5.3 years). 2.65 years. 5.3 years. 10.6 years. 15.9 years.

A source of Ir-192 has an activity of 20 curies today. What will be its activity at the end of 5 months? (Half-life of Ir-192 = 75 days or 2- 1/2 months). 15 curies. 10 curies. 5 curies. 2-1/2 curies.

If you used 1” of lead as shielding, with a cobalt-60 source, how much of the original intensity of the beam would remain? (HVL for lead with Co-60 is .49”). ¾. ½. 1/3. ¼.

You’re receiving 177 mR/hr during a 4 minute exposure. What would your pocket dosimeter read?. 12 mR. 24 mR. 35 mR. 177 mR.

20 feet from the source, your survey meter reads 50mR/hr. How far do you need to be from the source to achieve a 2mR/hr dose rate?. 50 feet. 75 feet. 100 feet. 120 feet.

You are working 15 feet away from a radioactive source and your survey meter reads 75 mR/hr. How far away from the source would you have to be for your survey meter to read 2 mR/hr?. 30 feet. 48 feet. 92 feet. 115 feet.

At what distance would you receive an exposure of 2 millirems if using a 90 curie Iridium 192 source with a 4 half-value layer collimator during a 10-minute shot? (Emissivity for Ir-192 is 5.2 R/h/c @ 1”). 125 feet. 49 feet. 75 feet. 10 feet.

What dose would a person receive standing 50 feet from a 35 curie Iridium 192 source during a 35 minute exposure?. 58 mR. 100 mR/hr. 42 mR. 35 REM.

If the intensity 20 feet from an Iridium 192 source is 30 mR/hr, what is the activity of the source? (Emissivity for Ir-192 is 5.2 R/h/c @ 1’). 2.3 curies. 10 curies. 25 curies. 50 curies.

What is the radiation intensity at 15 feet from a 30 curie Co-60 source while using a 4 HVL collimator? (Emissivity for Co-60 is 14 R/h/c @ 1’). 500 mR/hr. 100 mR/hr. 116 mR/hr. 56 mR/hr.

Upon receiving a 100 curie Ir-192 source, you note that the reading at the surface of the exposure device is 65 mR/hr and the Transport Index is 1. What label would you need to affix to the exposure device?. Caution: Radioactive Material. White I. Yellow II. Yellow III.

A radiographic exposure device that has a radiation level of 35 mR/hr at the surface and less than 1 mR/hr at one meter should be labeled as: White I. Yellow II. Yellow III. Radioactive Material.

The RQ label placed on a transport package identifies the radioactive material package as: Relative Quality. A nondescript DOT designation derived from a chart in 49 CFR. Radiation Quantity. Reportable Quantity.

The reading for the Transport Index of a shipping container should be taken how far from the surface?. 6 inches. 12 inches. 2 feet. 1 meter.

Sources which have been double encapsulated to prevent the release of radioactive material are called _____________. Special Form. Radionuclides. Normal Form. Hazardous Waste.

Raising the kilovolts on the control panel affects the: Penetrating capabilities of the X-ray produced. Scatter of high-speed electrons within the X-ray generator. Residual radiation left within the part. Neutron bombardment of the element within.