DHS 157.06 NoteNote: One sievert equals 100 rem.
DHS 157.06(4)(c)(c) The quality factors for converting absorbed dose to dose equivalent are shown in Table DHS 157.06A. DHS 157.06 NoteNote: Absorbed dose in gray equal to one Sv or the absorbed dose in rad equal to one rem.
DHS 157.06(4)(d)(d) If it is more convenient to measure the neutron fluence rate than to determine the neutron dose equivalent rate in sievert per hour or rem per hour, as provided in par. (c), 0.01 Sv (1 rem) of neutron radiation of unknown energies may be assumed to result from a total fluence of 25 million neutrons per square centimeter incident upon the body. If sufficient information exists to estimate the approximate energy distribution of the neutrons, a licensee or registrant may use the fluence rate per unit dose equivalent or the appropriate Q value from Table DHS 157.06B to convert a measured tissue dose in gray or rad to dose equivalent in sievert or rem. Table DHS 157.06B
Mean Quality Factors, Q, and Fluence Per Unit Dose
Equivalent for Monoenergetic Neutrons
DHS 157.06 Notea Value of quality factor at the point where the dose equivalent is maximum in a 30-centimeter diameter cylinder tissue-equivalent phantom.
DHS 157.06 Noteb Monoenergetic neutrons incident normally on a 30-centimeter diameter cylinder tissue-equivalent phantom.
DHS 157.06(5)(5) Units of activity. For purposes of this chapter, activity is expressed in the SI unit of becquerel or in the special unit of curie, or their multiples, or disintegrations or transformations per unit of time. One becquerel = one disintegration or transformation per second. One curie = 3.7E+10 disintegrations or transformations per second = 3.7E+10 becquerel = 2.22E+12 disintegrations or transformations per minute. DHS 157.06 HistoryHistory: CR 01-108: cr. Register July 2002 No. 559, eff. 8-1-02. DHS 157.09(1)(a)(a) A person is exempt from subchs. III and X if the person receives, possesses, uses, owns or transfers any of the following types and forms of source material: DHS 157.09(1)(a)1.1. Any chemical mixture, compound, solution or alloy in which the source material by weight is less than 1/20 of one percent of the mixture, compound, solution or alloy. DHS 157.09(1)(a)2.2. Unrefined and unprocessed ore containing source material provided that, except as authorized in a specific license, the person does not refine or process the ore. DHS 157.09(1)(a)3.3. Rare earth metals and compounds, mixtures and products containing not more than 0.25% by weight thorium, uranium or any combination of these. DHS 157.09(1)(a)4.d.d. Electric lamps for illuminating purposes provided that a lamp does not contain more than 50 milligrams of thorium. DHS 157.09(1)(a)4.e.e. Germicidal lamps, sunlamps and lamps for outdoor or industrial lighting provided that a lamp does not contain more than 2 grams of thorium. DHS 157.09(1)(a)4.f.f. Personnel neutron dosimeters, provided that a dosimeter does not contain more than 50 milligrams of thorium. DHS 157.09(1)(a)5.a.a. Glazed ceramic tableware manufactured before August 27, 2013, provided that the glaze contains not more than 20% by weight source material. DHS 157.09(1)(a)5.b.b. Glassware containing not more than 2% by weight source material, or for glassware manufactured before August 27, 2013, 10% by weight source material; but not including commercially manufactured glass brick, pane glass, ceramic tile, or other glass or ceramic used in construction. DHS 157.09(1)(a)5.c.c. Glass enamel or glass enamel frit containing not more than 10% by weight source material imported or ordered for importation into the United States or initially distributed by manufacturers in the United States, before July 25, 1983.