DHS 157.23(1)(f)(f) A licensee or registrant may permit visitors to individuals who cannot be released under s. DHS 157.62 (8). A visitor may receive a radiation dose greater than one mSv (100 mrem) if both of the following conditions are met: DHS 157.23(1)(f)1.1. The radiation dose received by the visitor does not exceed 5 mSv (0.5 rem). DHS 157.23(2)(2) Compliance with dose limits for individual members of the public. DHS 157.23(2)(a)(a) A licensee or registrant shall make or cause to be made, as appropriate, surveys of radiation levels in unrestricted and controlled areas and radioactive materials in effluents released to unrestricted and controlled areas to demonstrate compliance with the dose limits for individual members of the public in sub. (1). DHS 157.23(2)(b)(b) A licensee or registrant shall show compliance with the annual dose limit in sub. (1) by either of the following means: DHS 157.23(2)(b)1.1. Demonstrating by measurement or calculation that the total effective dose equivalent to the individual likely to receive the highest dose from the licensed or registered operation does not exceed the annual dose limit. DHS 157.23(2)(b)2.a.a. The annual average concentrations of radioactive material released in gaseous and liquid effluents at the boundary of the unrestricted area do not exceed the values specified in Table II of ch. DHS 157 Appendix E. DHS 157.23(2)(b)2.b.b. If an individual were continuously present in an unrestricted area, the dose from external sources would not exceed 0.02 mSv (2 mrem) in an hour and 0.5 mSv (50 mrem) in a year. DHS 157.23(2)(c)(c) Upon approval from the department, a licensee or registrant may adjust the effluent concentration values in Table II of ch. DHS 157 Appendix E for members of the public to take into account the actual physical and chemical characteristics of the effluents, such as aerosol size distribution, solubility, density and chemical form. DHS 157.23 HistoryHistory: CR 01-108: cr. Register July 2002 No. 559, eff. 8-1-02; correction in (2) (b) 2. a., (c) made under s. 35.17, Stats., Register January 2018 No. 745. DHS 157.24DHS 157.24 Testing for leakage or contamination of sealed sources. DHS 157.24(1)(1) General requirements. A licensee or registrant in possession of any sealed source shall ensure that all of the following requirements are met: DHS 157.24(1)(a)(a) Each sealed source, other than hydrogen-3, with a half-life of 30 days or more and in any form other than gas or seeds of iridium-192 encased in nylon ribbon, shall be tested for leakage or contamination as follows: DHS 157.24(1)(a)2.2. Unless otherwise authorized by the department, the NRC or another agreement state, at intervals not to exceed 6 months, except that each source designed to emit alpha particles shall be tested at intervals not to exceed 3 months. DHS 157.24(1)(a)3.3. At any time there is reason to suspect that a sealed source might have been damaged or might be leaking, it shall be tested for leakage before further use. DHS 157.24(1)(a)4.4. In the absence of a certificate from a transferor indicating that a test for leakage has been made within 6 months prior to the transfer, the sealed source may not be put into use until tested and the results received. DHS 157.24(1)(b)(b) Each source meeting the criteria under par. (a) not in use and identified as being in storage shall meet all the following conditions: DHS 157.24(1)(b)1.1. Sources other than brachytherapy or teletherapy sources shall be tested for leakage at intervals not to exceed 5 years. DHS 157.24(1)(b)2.2. Sources shall be tested for leakage and test results received prior any use or transfer, unless a test for leakage has been made within 6 months prior to the date of use or transfer. DHS 157.24(1)(b)3.3. Sources in storage shall be inventoried at intervals not to exceed 6 months. DHS 157.24(1)(c)(c) Tests for leakage for all sealed sources, except brachytherapy sources manufactured to contain radium, shall be capable of detecting the presence of 185 Bq (0.005 mCi) of radioactive material on a test sample. Test samples shall be taken from the sealed source or from the surfaces of the container in which the sealed source is stored or mounted on which one might expect contamination to accumulate. For a sealed source contained in a device, test samples shall be obtained when the source is in the “off” position. DHS 157.24(1)(d)(d) Tests for leakage for brachytherapy sources manufactured to contain radium shall be capable of detecting an absolute leakage rate of 37 Bq (0.001 mCi) of radon-222 in a 24 hour period when the collection efficiency for radon-222 and its progeny has been determined with respect to collection method, volume and time. DHS 157.24(1)(e)(e) Test samples shall be taken from the interior surfaces of the container in which sealed sources of radium are stored. The test shall be capable of detecting the presence of 185 Bq (0.005 mCi) of a radium daughter that has a half-life greater than 4 days. DHS 157.24(2)(2) Exemptions. Notwithstanding the requirements in sub. (1), any sealed source is exempt from tests for leakage when the sealed source contains 3.7 MBq (100 mCi) or less of beta- or gamma-emitting material or 0.37 MBq (10 mCi) or less of alpha-emitting material. DHS 157.24(3)(3) Authorization to conduct testing. Tests for leakage or contamination from sealed sources shall be performed by persons specifically authorized by the department, an agreement state, a licensing state or the NRC to perform the services.