- Industry: Government
- Number of terms: 15655
- Number of blossaries: 0
- Company Profile:
A U.S. Department of the Interior agency that oversees water resource management incuding the oversight and operation of numerous diversion, delivery, and storage projects the agency has built throughout the western United States for irrigation, water supply, and attendant hydroelectric power ...
A guideline for determining which faults or seismic sources need to be assigned MCE's. For high hazard structures, faults with Holocene or latest Pleistocene displacement are included and probabilistic assessments are based on an annual probability of occurrence of 2 x 10-5. For significant hazard structures, faults with Holocene displacement are included and probabilistic assessments are based on an annual probability of occurrence of 1 x 10-4.
Industry:Engineering
The rating for a dam based on the potential consequences of failure. The rating is based on potential for loss of life and damage to property that failure of the dam could cause. Such classification is related to the amount of development downstream of a dam. Hazard classification is not associated with the existing condition of a dam and/or its appurtenant structures or the anticipated performance or operation of a dam. Rather, hazard classification is a statement of the most realistic adverse impact on human life and downstream developments should a designated dam fail. Hazard classification is used as a tool for prioritizing program activities, allocating resources for accomplishment of objectives, and scheduling safety of dams reassessments. See high hazard, low hazard, and significant hazard.
Industry:Engineering
An electric utility legally established to be owned by and operated for the benefit of those using its service. The utility company will generate, transmit, and/or distribute supplies of electric energy to a specified area not being serviced by another utility. Such ventures are generally exempt from Federal income tax laws. Most electric cooperatives have been initially financed by the Rural Electrification Administration, U.S. Department of Agriculture.
Industry:Engineering
The working pressure rating of a specific pipe for use in water distribution systems which includes allowances for surges. This term is used for cast iron, ductile iron, asbestos cement, and some plastic pipe.
Industry:Engineering
An upward erosion/piping action into an embankment or foundation (possibly leading to a breach). Stoping occurs if the piping process is impeded or terminated prior to reaching the reservoir (by encountering non-erodible material, or the occurrence of a roof collapse). Either there will be no further detrimental consequence to the dam, or the horizontal seepage/piping component could translate upward by stoping, possibly intercepting the reservoir or resulting in sinkholes.
Industry:Engineering
A corporation, person, agency, authority, or other legal entity or instrumentality that owns and/or operates facilities within the United States, its territories, or Puerto Rico for the generation, transmission, distribution, or sale of electric energy primarily for use by the public and files forms listed in the Code of Federal Regulations, Title 18, Part 141. Facilities that qualify as cogenerators or small power producers under the Public Utility Regulatory Policies Act (PURPA) are not considered electric utilities.
Industry:Engineering
Rectangular gate supported and sealed similar to the paradox gate. Main difference is that the leaf is raised and lowered by a cable hoist, and operated on the face of the dam or a gate slot.
Industry:Engineering
A utility that is owned and operated by a city. In most cases, municipal utility rates are set at the city level, either by the municipal administration or by a local utility board or commission. In some limited circumstances, state-level regulation applies. Municipal utilities often have access to low-cost power from federal hydroelectric projects and can obtain low interest loans, and they are exempt from income and other taxes at the federal and state levels. These factors contribute to lower financing costs for plant and equipment. Municipal utilities serve roughly 14 percent of the nation's electric customers.
Industry:Engineering
An extensive habitat presenting considerable variation of the environment, containing a variety of ecological niches and supporting a large number and variety of complex flora and fauna.
Industry:Engineering
The hydraulic grade line lies below the energy grade line by an amount equal to the velocity head at the section. The two lines are parallel for all sections of equal cross sectional area. The distance between the pipe centerline and the hydraulic grade line is the pressure head, or piezometric height, at the section. The line showing the pressure head, or piezometric height, at any point in a pipe. The slope of the hydraulic grade line is known as the hydraulic gradient. The hydraulic gradient is the slope of the water surface in an open channel.
Industry:Engineering
