- 行业: Government
- Number of terms: 11131
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A regulatory approach that focuses on desired, measurable outcomes, rather than prescriptive processes, techniques, or procedures. Performance-based regulation leads to defined results without specific direction regarding how those results are to be obtained. At the NRC, performance-based regulatory actions focus on identifying performance measures that ensure an adequate safety margin and offer incentives for licensees to improve safety without formal regulatory intervention by the agency.
Industry:Energy
The use of portable survey meters to determine the amount of radioactive contamination on individuals, or the use of dosimetry to determine an individual's occupational radiation dose.
Industry:Energy
An arrangement of chemical elements in order of increasing atomic number. Elements of similar properties are placed one under the other, yielding groups or families of elements. Within each group, there is a variation of chemical and physical properties, but in general, there is a similarity of chemical behavior within each group. (See an online periodic table. )
Industry:Energy
Licensee attainment of defined objectives and results without detailed direction from the NRC on how these results are to be obtained. (See the Communication Plan for Performance-Based Regulation by using accession number ML021120533 in ADAMS. )
Industry:Energy
A quantitative measure of a particular attribute of licensee performance that shows how well a plant is performing when measured against established thresholds. Licensees submit their data quarterly; the NRC regularly conducts inspections to verify the submittals and then uses its own inspection data plus the licensees?submittals to assess each plant’s performance.
Industry:Energy
Parts (molecules) of a substance contained in a million parts of another substance (e.g., water).
Industry:Energy
A radionuclide that upon radioactive decay or disintegration yields a specific nuclide (the daughter).
Industry:Energy
The period during which a generating unit, transmission line, or other facility is out of service. Outages may be forced or scheduled, and full or partial.
Industry:Energy
Sealed sources of radioactive material contained in a small volume (but not radioactively contaminated soils and bulk metals) in any one or more of the following conditions:
* An uncontrolled condition that requires removal to protect public health and safety from a radiological threat
* A controlled or uncontrolled condition, for which a responsible party cannot be readily identified
* A controlled condition, compromised by an inability to ensure the continued safety of the material (e.g., the licensee may have few or no options to provide for safe disposition of the material)
* An uncontrolled condition, in which the material is in the possession of a person who did not seek, and is not licensed, to possess it
* An uncontrolled condition, in which the material is in the possession of a State radiological protection program solely to mitigate a radiological threat resulting from one of the above conditions, and for which the State does not have the necessary means to provide for the appropriate disposition of the material.
Industry:Energy
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, thereby affecting normal operation. However, neutron-absorbing materials (commonly known as “poisons” are intentionally inserted into some types of reactors to decrease the reactivity of their initial fresh fuel load.
Industry:Energy
