A general term for a wide range of waste that is contaminated with radioactive material or has become radioactive through exposure to neutron radiation. A variety of industries, hospitals and medical institutions, educational and research institutions, private or government la...
Primarily, the solid residue from a conventional uranium recovery facility in which uranium or thorium ore is crushed and processed mechanically or chemically to recover the uranium, thorium, or other valuable materials. This naturally radioactive ore residue contains the radi...
Devices used to measure, monitor, and control the thickness of sheet metal, textiles, paper napkins, newspaper, plastics, photographic film, and other products as they are manufactured. Gauges mounted in fixed locations are designed for measuring or controlling material dens...
The splitting of an atom, which releases a considerable amount of energy (usually in the form of heat) that can be used to produce electricity. Fission may be spontaneous, but is usually caused by the nucleus of an atom becoming unstable (or "heavy") after capturin...
Information that has been determined pursuant to an Executive order to require protection against unauthorized disclosure and is marked to indicate its classified status when in documentary form. The NRC has two types of classified information. The first type, known as Nationa...
An independent agency that regulates the interstate transmission of electricity, natural gas, and oil. FERC also regulates and oversees hydropower projects, and the construction of liquefied natural gas terminals and interstate natural gas pipelines. FERC protects the economi...
An annex to the National Response Framework, which provides for a timely, coordinated response by Federal agencies to nuclear or radiological accidents or incidents within the United States. This annex covers radiological dispersal devices and improvised nuclear devices, as w...
In reactor physics, a substance (other than fissionable material) that has a large capacity for absorbing neutrons in the vicinity of the reactor core. This effect may be undesirable in some reactor applications because it may prevent or disrupt the fission chain reaction, th...
A library providing access to publicly available documents related to the hearings regarding DOE’s application for authorization to construct a high-level nuclear waste geologic repository at Yucca Mountain, NV. The LSN Library is affiliated with the Agencywide Documents...
A special category of sensitive unclassified information that must be protected. Safeguards information concerns the physical protection of operating power reactors, spent fuel shipments, strategic special nuclear material, or other radioactive material. For additional detail...
The use of material control and accounting programs to verify that all special nuclear material is properly controlled and accounted for, as well as the physical protection (or physical security) equipment and security forces. As used by the International Atomic Energy Agency...
The change in reactivity per percent change in power. The power coefficient is the summation of the moderator temperature coefficient of reactivity, the fuel temperature coefficient of reactivity, and the void coefficient of reactivity.
Any deliberate act directed against a plant or transport in which an activity licensed pursuant to 10 CFR Part 73 of NRC's regulations is conducted or against a component of such a plant or transport that could directly or indirectly endanger the public health and safety by e...
Reactors that differ from today’s reactors primarily by their use of inert gases, molten salt mixtures, or liquid metals to cool the reactor core. Advanced reactors can also consider fuel materials and designs that differ radically from today’s enriched-uranium-dio...
Flora of North America @ efloras.orghttp://www.efloras.org/flora_page.aspx?flora_id=1[4/10/2012 10:05:30 AM] All Floras Advanced Search Login | eFloras Home | HelpFlora of North America Family ListOnline VolumesVolume 1 IntroductionVolume 2 Pteridophytes and Gymnosper...
One trillionth (10-12) of a curie.
'Ion COLUMBIANA HI TECH LLCr Nuclear Manufacturing ExcellenceFebruary 5, 2014 DWO-14-008Division of Spent Fuel Storage and TransportationU.S. Nuclear Regulatory Commission11555 Rockville PikeM/S 14 A 44Rockville, MD 28052Attention: Michele SampsonCC: Document Control Desk (wit...
Department of EnergyOffice of Civilian Radioactive Waste ManagementOffice of Repository Development QA: N/A1551 Hillshire Drive Project No. WM-0001 1Las Vegas, NV 89134-6321APR 2 9 2004OVERNIGHT MAILATTN: Document Control DeskDirector, Division of High-Level WasteRepository Sa...
NRC STAFF Response to Comments Received on Draft NUREG-1520Table of ContentsAbstract, Introduction, Glossary, Acronyms and AbbreviationsChapter 1 - Facility and Process DescriptionChapter 2 - Organization and AdministrationChapter 3 - Integrated Safety AnalysisChapter 4 - Radi...
In a nuclear power reactor, an area of lower density in a moderating system (such as steam bubbles in water) that allows more neutron leakage than does the more dense material around it.
Any material or obstruction that absorbs radiation and thus tends to protect personnel or materials from the effects of ionizing radiation.
An unstable isotope of an element that decays or disintegrates spontaneously, thereby emitting radiation. Approximately 5,000 natural and artificial radioisotopes have been identified.
A small ionization detection instrument that indicates ionizing radiation exposure directly. An auxiliary charging device is usually necessary.
Postulated events that meet a probability test rather than the more challenging test represented by a design-basis event.
A colloquial term describing the first nuclear reactors. They are called piles because the earliest reactors were "piles" of graphite and uranium blocks.