Kansas Administrative Regulations › Agency 28 - DEPARTMENT OF HEALTH AND ENVIRONMENT › Article 35 - RADIATION › Section 28-35-135e - Definitions

Current through Register Vol. 43, No. 28, July 11,
			 2024
As used in these regulations, each of the following terms shall
				have the meaning assigned in this regulation:
(a) "Effective dose equivalent (HE)" means
			 the sum of the products of the dose equivalent to each organ or tissue (HT) and
			 the weighting factor (wT) applicable to each of the body organs or tissues that
			 are irradiated (HE = ;x3 ThT).
(b)
			 "Embryo or fetus" means the developing human organism at any stage of
			 development until the time of birth.
(c) "Emergency" means an event requiring
			 prompt action to mitigate a threat to the health and safety of workers or the
			 public or a threat of damage to the environment.
(d) "Emergency planning zone" means a
			 geographic area surrounding a specific facility for which special planning and
			 preparedness efforts are carried out to ensure that prompt and effective
			 protective actions will reduce or minimize the impact of releases of
			 radioactive material on public health and safety or the environment.
(e) "Energy compensation source (ECS)" means
			 a small sealed source, with an activity not exceeding 3.7 Mbq (100
			 microcuries), used within a logging tool or other tool components to provide a
			 reference standard to maintain the tool's calibration when in use.
(f) "Entrance exposure rate" means the
			 roentgens per unit of time at the point where the center of the useful beam
			 enters any individual.
(g)
			 "Entrance or access point" means any opening through which an individual or
			 extremity of an individual could gain access to radiation areas or to licensed
			 or registered radioactive materials. This term shall include entry and exit
			 portals of sufficient size to permit human entry, irrespective of the intended
			 use.
(h) "Evacuation" means the
			 urgent removal of people from an area to avoid or reduce high-level, short-term
			 exposure.
(i) "Event" means a
			 situation reasonably discrete in time, location, and consequences.
(j) "Exercise" means a multifaceted activity
			 that test the plans, procedures, adequacy of training, resources, and
			 integrated capability of an emergency response system.
(k) "Existing equipment" means therapy
			 systems subject to K.A.R. 28-35-250a that were manufactured on or before
			 January 1, 1985.
(l) "Explosive
			 material" means any chemical compound, mixture, or device that produces a
			 substantial, instantaneous release of gas and heat spontaneously or by contact
			 with sparks or flame.
(m)
			 "Exposure" means the quotient of dQ divided by dm. "dQ" is the absolute value
			 of the total charge of the ions of one sign produced in air when all the
			 electrons, negatrons, and positrons liberated by photons in a volume element of
			 air having mass, expressed as "dm," are completely stopped in air. The special
			 unit of exposure is the roentgen (R). One roentgen equals 2.58 x 10-4 coulombs
			 per kilogram of air.
(n) "Exposure
			 head" means a device that locates the sealed source in the selected working
			 position. For the purposes of these regulations, "source stop" is an equivalent
			 term.
(o) "Exposure rate" means
			 the exposure per unit of time, including roentgens per minute (R/min) and
			 milliroentgens per hour (mR/hr).
(p) "External beam radiation therapy" means
			 therapeutic irradiation in which the source of radiation is at a distance from
			 the body.
(q) "External dose"
			 means that portion of the dose equivalent received from any source of radiation
			 outside the body.
(r) "Extremity
			 dose" means the external dose equivalent to the hand, elbow, arm below the
			 elbow, foot, knee, and leg below the knee.
(s) "Eye dose equivalent" means the external
			 dose equivalent to the lens of the eye, at a tissue depth of 0.3 centimeter or
			 300 mg/cm2.