DHS 157.73(10)(d)(d) Water handling system. For a pool irradiator, a licensee shall verify that the design of the water purification system is adequate to meet the requirements of sub. (7) (f). The system shall be designed so that water leaking from the system does not drain to unrestricted areas without being monitored.

DHS 157.73(10)(e)(e) Radiation monitors. For all irradiators, a licensee shall evaluate the location and sensitivity of the radiation monitor to detect sources carried by the product conveyor system as required by sub. (5) (a). A licensee shall verify that the product conveyor is designed to stop before a source on the product conveyor would cause a radiation overexposure to any person. For a pool irradiator, if the licensee uses radiation monitors to detect contamination under sub. (16) (b), the licensee shall verify that the design of radiation monitoring systems to detect pool contamination includes sensitive detectors located close to where contamination is likely to concentrate.

DHS 157.73(10)(f)(f) Source rack. For a pool irradiator, a licensee shall verify that there are no crevices on the source or between the source and source holder that would promote corrosion on a critical area of the source. For a panoramic irradiator, a licensee shall determine that source rack drops due to loss of power will not damage the source rack and that source rack drops due to failure of cables, or alternate means of support, will not cause loss of integrity of sealed sources. For a panoramic irradiator, a licensee shall review the design of the mechanism that moves the sources to ensure that the likelihood of a stuck source is low and that, if the rack sticks, a means exists to free the rack with minimal risk to personnel.

DHS 157.73(10)(g)(g) Access control. For a panoramic irradiator, a licensee shall verify from the design and logic diagram that the access control system meets the requirements of sub. (2).

DHS 157.73(10)(h)(h) Fire protection. For a panoramic irradiator, a licensee shall verify that the number, locations, and spacing of the smoke and heat detectors are appropriate to detect fires and that the detectors are protected from mechanical and radiation damage. A licensee shall verify that the design of the fire extinguishing system provides the necessary discharge patterns, densities, and flow characteristics for complete coverage of the radiation room and that the system is protected from mechanical and radiation damage.

DHS 157.73(10)(i)(i) Source return. For a panoramic irradiator, a licensee shall verify that the source rack will automatically return to the fully shielded position if power is lost for more than 10 seconds.

DHS 157.73(10)(j)(j) Seismic. For a panoramic irradiator to be built in seismic areas where the probability of a horizontal acceleration in rock of more than 0.3 times the acceleration of gravity in 250 years is greater than 10%, a licensee shall design the reinforced concrete radiation shields to retain their integrity in the event of an earthquake by designing the irradiator to the seismic requirements of local building codes.

DHS 157.73(10)(k)(k) Wiring. For a panoramic irradiator, a licensee shall verify that electrical wiring and electrical equipment in the radiation room are selected to minimize failures due to prolonged exposure to radiation.

DHS 157.73(11)(11) Construction monitoring and acceptance testing. An irradiator shall meet all of the following requirements prior to loading sources:

DHS 157.73(11)(a)(a) Shielding. For a panoramic irradiator, a licensee shall monitor the construction of the shielding to verify that its construction meets design specifications and local building code requirements for reinforced concrete.

DHS 157.73(11)(b)(b) Foundations. For a panoramic irradiator, a licensee shall monitor the construction of the foundations to verify that their construction meets design specifications.

DHS 157.73(11)(c)(c) Pool integrity. For a pool irradiator, a licensee shall verify that the pool meets design specifications and shall test the structural integrity of the pool and its ability to hold water. A licensee shall verify that outlets and pipes meet the requirements of sub. (7) (c).

DHS 157.73(11)(d)(d) Water handling system. For a pool irradiator, a licensee shall verify that the water purification system, the conductivity meter, and the water level indicators operate properly.

DHS 157.73(11)(e)(e) Radiation monitors. For all irradiators, a licensee shall verify the proper operation of the radiation monitor to detect sources carried on the product conveyor system and the related alarms and interlocks required by sub. (5) (a). For a pool irradiator, a licensee shall verify the proper operation of the radiation monitors and the related alarm, if used, to meet sub. (16) (b). For an underwater irradiator, a licensee shall verify the proper operation of the over-the-pool monitor, alarms, and interlocks required by sub. (5) (b).

DHS 157.73(11)(f)(f) Source rack. For a panoramic irradiator, a licensee shall test the movement of the source racks for proper operation prior to source loading. The testing shall include source rack lowering due to simulated loss of power. For all irradiators with a product conveyor system, a licensee shall observe and test the operation of the conveyor system to assure that the requirements in sub. (8) are met for protection of the source rack and the mechanism that moves the rack. The testing shall include tests of any limit switches and interlocks used to protect the source rack and mechanism that moves that rack from moving product carriers.

DHS 157.73(11)(g)(g) Access control. For a panoramic irradiator, a licensee shall test the completed access control system to assure that the control system functions as designed and that all alarms, controls, and interlocks work properly.

DHS 157.73(11)(h)(h) Fire protection. For a panoramic irradiator, a licensee shall test the ability of the heat and smoke detectors to detect a fire, to activate alarms, and to cause the source rack to automatically become fully shielded. A licensee shall test the operability of the fire extinguishing system.

DHS 157.73(11)(i)(i) Source return. For a panoramic irradiator, the licensee shall demonstrate that the source racks may be returned to their fully shielded positions without power.

DHS 157.73(11)(j)(j) Computer systems. For a panoramic irradiator that uses a computer system to control the access control system, a licensee shall verify that the access control system will operate properly if power is lost and shall verify that the computer has security features that prevent an irradiator operator from commanding the computer to override the access control system when the system is required to be operable.

DHS 157.73(11)(k)(k) Wiring. For a panoramic irradiator, a licensee shall verify that the electrical wiring and electrical equipment that were installed meet the design specifications.

DHS 157.73(12)(a)(a) Before a person may act as an irradiator operator without a supervisor present, the person shall be instructed in all the following:

DHS 157.73(12)(a)1.1. The fundamentals of radiation protection applied to irradiators. The fundamentals shall include the differences between external radiation and radioactive contamination, units of radiation dose, dose limits, why large radiation doses must be avoided, how shielding and access controls prevent large doses, how an irradiator is designed to prevent contamination, the proper use of survey meters and personnel dosimeters, other radiation safety features of an irradiator and the basic function of the irradiator.

DHS 157.73(12)(b)(b) Before a person may act as an irradiator operator without a supervisor present, the person shall pass a written test on the instruction received consisting primarily of questions based on the licensee’s operating and emergency procedures that the person is responsible for performing and other operations necessary to safely operate the irradiator without supervision.

DHS 157.73(12)(c)(c) Before a person may act as an irradiator operator without a supervisor present, the person shall have received on-the-job training or simulator training in the use of the irradiator as described in the license application. The person shall also demonstrate the ability to perform those portions of the operating and emergency procedures that he or she is to perform.