Attenuation block means a block or stack, having dimensions 20 centimeters by 20 centimeters by 3.8 centimeters, of type 1100 aluminum alloy or other materials having equivalent attenuation.
Natural attenuation means the reduction in the con- centration and mass of a substance, and the products into which the substance breaks down, due to naturally occurring physical, chemical and biological processes.
Runway means a defined rectangular area on a land aerodrome prepared for the landing and take-off of aircraft;
borehole means a hole sunk into the earth for the purpose of locating, abstracting or using subterranean water and includes a spring;
Pitch means a Grass Pitch or Football Turf Pitch.
Hydraulic lift tank means a tank holding hydraulic fluid for a closed-loop mechanical system that uses compressed air or hydraulic fluid to operate lifts, elevators, and other similar devices.
Nematode means invertebrate animals of the phylum nemathelminthes, and class nematoda, i.e., unsegmented round worms with elongated, fusiform, or saclike bodies covered with cuticle, and inhabiting soil, water, plants, or plant parts, may also be called nemas or eelworms.
Collimator means a radiation shield that is placed on the end of the guide tube or directly onto a radiographic exposure device to restrict the size of the radiation beam when the sealed source is cranked into position to make a radiographic exposure.
Backpressure means a pressure (caused by a pump, elevated tank or piping, boiler, or other means) on the consumer's side of the service connection that is greater than the pressure provided by the public water system and which may cause backflow.
Disinfectant means any oxidant, including but not limited to chlorine, chlorine dioxide, chloramines, and ozone added to water in any part of the treatment or distribution process, that is intended to kill or inactivate pathogenic microorganisms.
Skateboard means a board with small wheels that is usually ridden by a person. For purposes of these rules, a nonmotorized scooter (a board with a handle) is considered a skateboard.
Engine degreaser means a cleaning product designed to remove grease, grime, oil and other contaminants from the external surfaces of engines and other mechanical parts.
Filter means material placed in the useful beam to preferentially absorb selected radiations.
PNode has the meaning set forth in the CAISO Tariff.
Stroke means a cerebrovascular accident or infarction (death) of brain tissue, as diagnosed by a Physician, which is caused by hemorrhage, embolism, or thrombosis producing measurable, neurological deficit persisting for at least one hundred eighty (180) days following the occurrence of the Stroke. Stroke does not include Transient Ischemic Attack (TIA) or other cerebral vascular events.
Diameter means the diameter of the stem of a tree measured outside the bark at a specified point of measurement.
Drum means any cylindrical metal shipping container of 13 to 110 gallon capacity.
Disinfect means to eliminate virtually all germs from inanimate surfaces through the use of chemicals or physical agents (e.g., heat). In the child care environment, a solution of ¼ cup household liquid chlorine bleach added to one gallon of water (or one tablespoon bleach to one quart water) and prepared fresh daily is an effective disinfectant for environmental surfaces and other objects. A weaker solution of 1 tablespoon bleach to 1 gallon of cool water is effective for use on toys, eating utensils, etc. Commercial products may also be used.
Blasting means changing the level or grade of land or rendering, tearing, demolishing, moving, or removing earth, rock, buildings, structures, or other masses or materials by seismic blasting or the detonation of dynamite or any other explosive agent.
voltage means the root-mean-square value of electrical potential between two conductors.
Connector means a flanged, screwed, welded, or other joined fitting used to connect two pipelines or a pipeline and a piece of process equipment.
Viator means the owner or holder of a policy who has a terminal illness or condition and who enters into a viatical settlement contract.
high voltage means the classification of an electric component or circuit, if its working voltage is > 60 V and ≤ 1500 V DC or > 30 V and ≤ 1000 V AC root mean square (rms).
Casing means a pipe or tubing of appropriate material, of varying diameter and weight, lowered into a borehole during or after drilling in order to support the sides of the hole and thus prevent the walls from caving, to prevent loss of drilling mud into porous ground, or to prevent water, gas, or other fluid from entering or leaving the hole.
Propeller means for a device for propelling an aircraft that has blades on a powerplant driven shaft and that, when rotated, produces by its action on the air, a thrust approximately perpendicular to its plane of rotation and it includes control components normally supplied by its manufacturer, but does not include main and auxiliary rotors or rotating airfoils of powerplants;
Moderator means, in connection with this DPA, a verified adult affiliated with and authorized by the Educational Institution to moderate a Student Account or a Classroom, as permitted by the Service.