Nuclear energy and radiation terminology · MLC-0119
Nuclear energy and radiation terms: A (26)
- Access hatchAn airtight door system that preserves the pressure integrity of the containment structure of a nuclear...
- ActivationThe process of making a radioisotope by bombarding a stable element with neutrons or protons.
- Active fuel lengthThe end-to-end dimension of fuel material within a fuel assembly (also known as a "fuel bundle" or "fuel...
- ActivityThe rate of disintegration (transformation) or decay of radioactive material per unit time. The units of...
- Advanced reactorsReactors that differ from today’s reactors primarily by their use of inert gases, molten salt mixtures, or...
- Agreement StateA U.S. State that has signed an agreement with the U.S. Nuclear Regulatory Commission (NRC) authorizing the...
- Air samplingThe collection of samples of air to measure the radioactivity or to detect the presence of radioactive...
- Airborne radioactivity areaAs defined in Title 10, Section 20.1003, of the Code of Federal Regulations (10 CFR 20.1003), the airborne...
- ALARAAs defined in Title 10, Section 20.1003, of the Code of Federal Regulations (10 CFR 20.1003), ALARA is an...
- AleatoryA type of uncertainty that is irreducible.
- Alkali silica reactionASR is a chemical combining of reactive silica from the concrete aggregate with the alkali from the cement...
- AllegationA declaration, statement, or assertion of impropriety or inadequacy associated with NRC-regulated activities...
- Alpha particleA positively charged particle ejected spontaneously from the nuclei of some radioactive elements. It is...
- AnionA negatively charged ion.
- Annual limit on intakeAs defined in Title 10, Section 20.1003, of the Code of Federal Regulations (10 CFR 20.1003), ALI is the...
- Anticipated transient without scramAn ATWS is one of the "worst case" accidents, consideration of which frequently motivates the NRC to take...
- Assumptions (for IPEs, IPEEs, and PRAs)In the context of individual plant examinations (IPEs), individual plant examinations for external events...
- AtomThe smallest particle of an element that cannot be divided or broken up by chemical means. It consists of a...
- Atomic energyThe energy that is released through a nuclear reaction or radioactive decay process. One kind of nuclear...
- Atomic Energy CommissionThe Federal agency (known as the AEC), which was created in 1946 to manage the development, use, and control...
- Atomic numberThe number of positively charged protons in the nucleus of an atom.
- AttenuationThe process by which the number of particles or photons entering a body of matter is reduced by absorption...
- Auxiliary buildingA building at a nuclear power plant, which is frequently located adjacent to the reactor containment...
- Auxiliary feedwaterBackup water supply used during nuclear plant startup and shutdown to supply water to the steam generators...
- Average planar linear heat generation rateThe average value of the linear heat generation rate of all the fuel rods at any given horizontal plane along...
- Axial crackA crack that is oriented in a plane extending radially from the center of a pipe.
26 of 555 terms in Nuclear energy and radiation terminology (MLC-0119). Request the full dataset.