Exam (elaborations)
Radiation Safety Final Questions and Answers 2024
- Course
- Institution
Radiation Safety Final
[Show more]
Content preview
Radiation Safety FinalA person is standing in an area where they are exposed to 25 mrem during a 40 second
shot with a tube setting of 10 mA. If the milliamperage were changed to 5 mA with the
same exposure time, what would the person's new exposure be? - answer12.5 mrem
At the completion of an X-ray exposure and turning the system to stand by: - answeryou
must survey the tube assembly 360 degrees
An X-ray cabinet must comply with unrestricted area requirements. The maximum
amount of radiation emitted from the cabinet at 1.97 inches shall not exceed: -
answer0.5 mR/HR
The output equivalent to curies with an X-ray tube is controlled by the: - answer
amperage rheostat
The parts of the Louisiana Administrative Code that pertain directly to radiographic are
chapters: - answer4,5, &10
The storage vault cannot have more than which of the following readings at any external
surface? - answer2mR/hr
A radiographic was exposed to a dose of 100 Mr/hr for 30 minutes. What was the dose?
- answer50 mrem
Radiation arising directly from the target of an X-ray tube or an accelerator, or from a
radioactive source, is usually referred to as: - answerPrimary Radiation
In accordance with DOT regulation, radioactive materials are classified into which two
categories? - answerNormal and Special form
The maximum radiation intensity level at the surface of a package with a Radioactive
Yellow III shipping label is: - answer200 mR/hr
Van De Graaff generators obtain their electrons through: - answerElectrostatic principle.
In most cases, the standard anode material is: - answerTungsten
The high-vacuum envelope is used to: - answerAll of them
X-radiation is produced when a supply of: - answerHigh-speed electrons are introduced
from the cathode and strike the anode within a vacuum-sealed envelope.
, Increasing _______________across the filament expends more free electrons, thereby
increasing the numbers of free electrons able to across and strike the anode target
creating more X-radiation - answerMilliamperes
The structure known as the cathode serves as the ___________________source. -
answerElectron
Most of the energy used in producing X-ray converts to: - answerHeat
In most tubes______________________ is used as an exit port for the x-radiation
energy. - answerBeryllium
Raising the kilovolts on the control panel affects the: - answerPenetrating capabilities of
the X-ray produced.
Sources which have been double encapsulated to prevent the release of radioactive
material are called__________________. - answerSpecial Form
The reading for the Transport Index of a shipping container should be taken how far
from the surface? - answer1 meter
The RQ label placed on a transport package identifies radioactive material package as:
- answerReportable Quality
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: - answerYellow II
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? - answerYellow III
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') - answer116 mR/hr
If the intensity 20 feet from 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') - answer2.3 curies
What dose would a person receive standing 50 feet from a 35 curie Iridium 192 source
during a 35 minute exposure? - answer42 mR
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)' (one foot). - answer49 feet
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Dreamer252. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now