DHS 157.03(403)(b)(b) Is to be administered as a single dosage to a patient or human research subject without any further manipulation of the dosage after it is initially prepared, except to adjust the dosage to patient needs.

DHS 157.03(404)(404) “Unrefined and unprocessed ore” means ore in its natural form prior to any processing, such as grinding, roasting or beneficiating, or refining the ore from its natural state. Processing does not include sieving or encapsulation of ore or preparation of samples for laboratory analysis.

DHS 157.03(405)(405) “Unrestricted area” or “uncontrolled area” means an area, access to which is neither limited nor controlled by the licensee or registrant.

DHS 157.03(406)(406) “Uranium sinker bar” means a weight containing depleted uranium used to pull a logging tool down toward the bottom of a well.

DHS 157.03(407)(407) “Useful beam” means the radiation which passes through the tube housing port and the aperture of the beam-limiting device when the exposure switch or timer is activated.

DHS 157.03(408)(408) “User seal check” means an action conducted by the respirator user to determine if the respirator is properly seated to the face. Examples include negative pressure check, positive pressure check, irritant smoke check, or isoamyl acetate check.

DHS 157.03(409)(409) “Variable-aperture beam-limiting device” means a beam-limiting device that has capacity for stepless adjustment of the x-ray field size at a given SID.

DHS 157.03(410)(410) “Very high radiation area” means an area, accessible to individuals, in which radiation levels from radiation sources external to the body could result in an individual receiving an absorbed dose in excess of 5 Gy (500 rad) in one hour at one meter from a source of radiation or one meter from any surface that the radiation penetrates.

DHS 157.03(411)(411) “Virtual source” means a point from which radiation appears to originate.

DHS 157.03(412)(412) “Visible area” means that portion of the input surface of the image receptor over which incident x-ray photons are producing a visible image.

DHS 157.03(413)(413) “Waste” means those low-level radioactive wastes containing source, special nuclear, or byproduct material that are acceptable for disposal in a land disposal facility. For the purposes of this definition, “low-level radioactive waste” means radioactive waste not classified as high-level radioactive waste, transuranic waste, spent nuclear fuel, or byproduct material as defined in sub. (50) (b) to (e).

DHS 157.03(414)(414) “Waste handling licensee” mean a person licensed to receive and store radioactive residue prior to disposal and a person licensed to dispose of radioactive residue.

DHS 157.03(415)(415) “Wedge filter” means a filter which effects continuous change in transmission over all or a part of the useful beam.

DHS 157.03(416)(416) “Week” means 7 consecutive days starting on Sunday.

DHS 157.03(417)(417) “Weighting factor” or “wT” for an organ or tissue means the proportion of the risk of stochastic effects resulting from irradiation of that organ or tissue to the total risk of stochastic effects when the whole body is irradiated uniformly. For calculating the effective dose equivalent, the values of wT are:

a/ 0.30 results from 0.06 for each of 5 “remainder” organs, excluding the skin and the lens of the eye, that receive the highest doses.

b/ For the purpose of weighting the external whole body dose, for adding it to the internal dose, a single weighting factor, wT = 1.0, has been specified. The department shall approve the use of other weighting factors for external exposure on a case-by-case basis until such time as specific guidance is issued.

DHS 157.03(418)(418) “Well” means a drilled hole in which well logging may be performed.

DHS 157.03(419)(419) “Well logging” means all operations involving the lowering and raising of measuring devices or tools which may contain sources of radiation into wells or cavities for the purpose of obtaining information about the well or adjacent formations which may be used in oil, gas, mineral, groundwater or geological exploration.