DHS 157.03(187) (187) “Lead equivalent” means the thickness of the material in question affording the same attenuation as lead.

DHS 157.03(188) (188) “Leakage radiation” means radiation emanating from the diagnostic source assembly except for any of the following:

DHS 157.03(188)(a) (a) The useful beam.

DHS 157.03(188)(b) (b) Radiation produced when the exposure switch or timer is not activated.

DHS 157.03(189) (189) “Lens dose equivalent” or “LDE” means the external dose equivalent to the lens of the eye at a tissue depth of 0.3 centimeter (300 mg/cm2).

DHS 157.03(189m) (189m) “License verification system” means the national verification system that enables authorized government authorities and authorized licensees to verify certain information about licensees authorized to possess, use, or ship radioactive materials.

DHS 157.03 Note Note: The system may be used to confirm that a license is valid and accurate, a licensee is authorized to acquire quantities and types of radioactive materials, and the licensee’s category 1 or 2 quantities of radioactive material inventories do not exceed the possession limits of the license.

DHS 157.03(190) (190) “Licensed or registered material” means radioactive material received, possessed, used, transferred or disposed of under a general or specific license or registration issued by the department.

DHS 157.03(191) (191) “Licensed practitioner” means a chiropractor, dentist, physician, podiatrist, physician assistant, nurse practitioner or radiologist’s assistant licensed in the state of Wisconsin.

DHS 157.03(192) (192) “Licensing state” means any state approved by the Conference of Radiation Control Program Directors, Inc., as having regulations equivalent to the Suggested State Regulations for Control of Radiation relating to NARM and an effective program for the regulatory control of NARM.

DHS 157.03(193) (193) “Light field” means the area of the intersection of the light beam from the beam-limiting device and one of the set of planes parallel to and including the plane of the image receptor, whose perimeter is the locus of points at which the illumination is one-fourth of the maximum in the intersection.

DHS 157.03(193e) (193e) “Local components” means parts of a radiation generating device x-ray system and include areas that are struck by x-rays such as radiation source housings, beam port and shutter assemblies, collimators, sample holders, cameras, goniometers, detectors, and shielding, but do not include power supplies, transformers, amplifiers, readout devices, and control panels.

DHS 157.03(193m) (193m) “Local law enforcement agency” or “LLEA” means a public or private organization that has been approved by a federal, state, or local government to carry firearms and make arrests, and is authorized and has the capability to provide an armed response in the jurisdiction where the licensed category 1 or category 2 quantity of radioactive material is used, stored, or transported.

DHS 157.03(194) (194) “Logging tool” means a device used subsurface to perform well logging.

DHS 157.03(195) (195) “Loose-fitting facepiece” means a respiratory inlet covering that is designed to form a partial seal with the face.

DHS 157.03(196) (196) “Lost or missing licensed or registered source of radiation” means a licensed or registered source of radiation whose location is unknown. This definition includes licensed or registered material that has been shipped but has not reached its planned destination and whose location cannot be readily traced in the transportation system.

DHS 157.03(197) (197) “Low dose-rate remote afterloader” or “LDR” means a device that delivers a dose rate of less than or equal to 2 gray (200 rads) per hour.

DHS 157.03(197m) (197m) ”Low specific activity” means radioactive material with limited specific activity which is nonfissile or is excepted under s. DHS 157.92 (2) (c), and which satisfies the descriptions and limits set forth in ss. DHS 157.03 (198), (199) or (200). Shielding materials surrounding the low specific activity material may not be considered in determining the estimated average specific activity of the package contents.

DHS 157.03(198) (198) “Low specific activity – I” or “LSA-I material” means any of the following:

DHS 157.03(198)(a) (a) Uranium and thorium ores, concentrates of uranium and thorium ores, and other ores containing naturally occurring radioactive radionuclides which are intended to be processed for the use of radionuclides.

DHS 157.03(198)(b) (b) Natural uranium, depleted uranium, natural thorium or their compounds or mixtures, provided they are unirradiated and in solid or liquid form.

DHS 157.03(198)(c) (c) Radioactive material, other than fissile material, for which the A2 value is unlimited.

DHS 157.03(198)(d) (d) Other radioactive material in which the radioactive material is distributed throughout and the estimated average specific activity does not exceed 30 times the value for exempt material activity concentration determined under ch. DHS 157 Appendix O.

DHS 157.03(199) (199) “Low specific activity – II” or “LSA-II material” means either of the following:

DHS 157.03(199)(a) (a) Water with tritium concentration up to 0.8 terabecquerel per liter (20.0 Ci/L).

DHS 157.03(199)(b) (b) Other material in which the radioactive material is distributed throughout, and the average specific activity does not exceed 10-4 A2/g for solids and gases and 10-5 A2/g for liquids.

DHS 157.03(200) (200) “Low specific activity – III” or “LSA-III material” means solids, such as consolidated wastes or activated materials, excluding powders, that satisfy the requirements of 10 CFR 71.77, and for which all of the following apply:

DHS 157.03(200)(a) (a) The radioactive material is distributed throughout a solid or a collection of solid objects, or is essentially uniformly distributed in a solid compact binding agent, for example, concrete, bitumen or ceramic.

DHS 157.03(200)(b) (b) The radioactive material is relatively insoluble, or it is intrinsically contained in a relatively insoluble material, so that, even under loss of packaging, the loss of radioactive material per package by leaching, when placed in water for 7 days, would not exceed 0.1 A2.