DHS 157.73(14)(a)(a) Any irradiator operator shall wear a personnel dosimeter while operating a panoramic irradiator or while in the area around the pool of an underwater irradiator. The personnel dosimeter shall be capable of detecting high energy photons in the normal and accident dose ranges. Each personnel dosimeter shall be assigned to and worn by only one person. Film badges shall be replaced at least monthly and all other personnel dosimeters that require replacement shall be replaced at least quarterly. All personnel dosimeters must be evaluated at least quarterly or promptly after replacement, whichever is more frequent.

DHS 157.73(14)(b)(b) A person other than an irradiator operator who enters the radiation room of a panoramic irradiator shall wear a dosimeter, which may be a pocket dosimeter. For groups of visitors, only 2 people who enter the radiation room are required to wear dosimeters.

DHS 157.73(14)(c)(c) If pocket dosimeters are used to meet the requirements of par. (b), a check of their response to radiation shall be performed at least annually, at intervals not to exceed 13 months. Acceptable dosimeters shall read within plus or minus 20% of the true radiation dose.

DHS 157.73(15)(a)(a) A radiation survey of the area outside the shielding of the radiation room of a panoramic irradiator shall be conducted with the sources in the exposed position before the facility starts to operate. A radiation survey of the area above the pool of pool irradiators shall be conducted after the sources are loaded but before the facility starts to operate. Additional radiation surveys of the shielding shall be performed at intervals not to exceed 3 years and before resuming operation after addition of new sources or any modification to the radiation room shielding or structure that might increase dose rates.

DHS 157.73(15)(b)(b) If the radiation levels specified in sub. (3) are exceeded, the facility shall be modified to comply with the requirements in sub. (3).

DHS 157.73(15)(c)(c) Portable radiation survey meters shall be calibrated at a frequency not to exceed 13 months to an accuracy of plus or minus 20% for the gamma energy of the sources in use. The calibration shall be performed at 2 points on each scale or, for digital instruments, at one point per decade over the range that will be used. Portable radiation survey meters shall be of a type that does not fail and read zero at high radiation dose rates.

DHS 157.73(15)(d)(d) Water from the irradiator pool, other potentially contaminated liquids and sediments from pool vacuuming shall be monitored for radioactive contamination before release to unrestricted areas. Radioactive concentrations may not exceed those specified in Table II, Column 2 or Table III of ch. DHS 157 Appendix E.

DHS 157.73(15)(e)(e) Before releasing resins for unrestricted use, the resins shall be monitored before release in an area with a background level less than 0.5 microsievert (0.05 mrem) per hour. The resins may be released only if the survey does not detect radiation levels above background radiation levels. The survey meter used shall be capable of detecting radiation levels of 0.5 microsievert (0.05 mrem) per hour.

DHS 157.73(16)(a)(a) Each dry-source-storage sealed source shall be tested for leakage at intervals not to exceed 6 months using a leak test kit or a method approved by the department, the NRC, another agreement state or a licensing state. In the absence of a certificate from a transferor that a test has been made within the 6 months before the transfer, the sealed source may not be used until tested. The test shall be capable of detecting the presence of 200 becquerels (0.005 mCi) of radioactive material and shall be performed by a person approved by the department, the NRC, another agreement state or a licensing state to perform the test.

DHS 157.73(16)(b)(b) For a pool irradiator, sources may not be put into the pool unless a licensee tests the sources for leaks or has a certificate from a transferor that a leak test has been performed within the 6 months before the transfer. Water from the pool shall be checked for contamination each day the irradiator operates. The check may be done either by using a radiation monitor on a pool water circulating system or by analysis of a sample of pool water. If a check for contamination is performed by analysis of a sample of pool water, the results of the analysis shall be available within 24 hours. If the licensee uses a radiation monitor on a pool water circulating system, the detection of above normal radiation levels shall activate an alarm. The alarm set-point shall be set as low as practical, but high enough to avoid false alarms. A licensee may reset the alarm set-point to a higher level if necessary to operate the pool water purification system to clear up contamination in the pool if specifically provided for in written emergency procedures.

DHS 157.73(16)(c)(c) If a leaking source is detected, a licensee shall arrange to remove the leaking source from service and have it decontaminated, repaired or disposed of by a department, NRC, another agreement state or a licensing state licensee authorized to perform decontamination, repair or disposal. A licensee shall promptly check its personnel, equipment, facilities and irradiated product for radioactive contamination. No product may be shipped until the product has been checked and found free of contamination. If a product has been shipped that may have been inadvertently contaminated, the licensee shall arrange to locate and survey that product for contamination. If any personnel are found to be contaminated, decontamination shall be performed immediately. If contaminated equipment, facilities or products are found, a licensee shall arrange to have the equipment, facilities or products decontaminated or disposed of by the department, the U.S. nuclear regulatory commission, another agreement state or a licensing state licensee authorized to perform decontamination or disposal. If a pool is contaminated, a licensee shall arrange to clean the pool until the contamination levels do not exceed the appropriate concentration in Table II, Column 2 of ch. DHS 157 Appendix E.