Click here to make tpub.com your Home Page

Page Title: Glossary cont'd
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 



DOE-HDBK-1108-97
Radiological Training for Accelerator Facilities
Instructor's Guide
GLOSSARY (continued)
Fail-Safe: A design feature built into a system or system component so that the most likely mode of
failure causes the production of X-rays to be turned off. If fail-safe design is not possible or cost-
effective, the system or system component should be designed so that no single failure will cause unsafe
operation.
Interlock: A safety device that automatically renders an area safe from prompt radiation when the
device is actuated.
Linear accelerator: A device that accelerates charged particles along a straight line.
Mixed Waste: Waste containing both radioactive and hazardous components as defined by the Atomic
Energy Act and the Resource Conservation and Recovery Act, respectively.
Muon: An elementary particle apparently identical to the electron except for being 200 times heavier.
Neutron: Elementary particle with a mass approximately the same as that of a hydrogen atom and
electrically neutral.
Nucleus: The small, central, positively charged region of an atom that carries essentially all the mass.
Pion: A cosmic particle with a mass about 273 times that of an electron and a half-life of 2/100,000,000
(2 x 10-8) of a second. Positive, negative, and neutral pions exist.
Primary Beam: Radiation that passes through the window, aperture, cone, or other collimating device of
the source housing. Sometimes called useful beam.
Prompt radiation: Radiation resulting from the accelerator beam or the interaction of the accelerator
beam with surrounding matter that ceases shortly after the beam is removed. Activation products and
area contamination are not considered prompt radiation.
Proton: An elementary nuclear particle with a positive electric charge and an atomic weight of
approximately one.
49


Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business