4731 RADIATION SAFETY

4731.3530 TYPE A SPECIFIC LICENSE OF BROAD SCOPE. An application for a Type A specific license of broad scope shall be approved if the applicant: A. satisfies the general requirements under part 4731.3070; B. has engaged in an appropriate number of activities involving the use of…

4731.3540 TYPE B SPECIFIC LICENSE OF BROAD SCOPE. An application for a Type B specific license of broad scope shall be approved if the applicant: A. satisfies the general requirements under part 4731.3070; and B. has established administrative controls and provisions relating to …

4731.3550 TYPE C SPECIFIC LICENSE OF BROAD SCOPE. An application for a Type C specific license of broad scope shall be approved if the applicant: A. satisfies the general requirements under part 4731.3070; B. submits a statement that radioactive material will be used only by, or …

4731.3560 APPLICATION FOR OTHER SPECIFIC LICENSES. An application filed under parts 4731.3000 to 4731.3175 for a specific license other than one of broad scope shall be considered by the commissioner as an application for a specific license of broad scope under parts 4731.3500 to…

4731.3570 SPECIFIC LICENSES OF BROAD SCOPE; CONDITIONS. A. Unless specifically authorized in this chapter, persons licensed under parts 4731.3500 to 4731.3580 must not: (1) conduct tracer studies in the environment involving direct release of radioactive material; (2) receive, ac…

4731.3580 LIMITS FOR BROAD SCOPE LICENSES. The following limits apply to specific licenses of broad scope issued under parts 4731.3500 to 4731.3580: Column I Column II Radioactive Material curies curies Antimony-122 1 0.01 Antimony-124 1 0.01 Antimony-125 1 0.01 Arsenic-73 10 0.1…

4731.4000 LICENSES FOR INDUSTRIAL RADIOGRAPHY AND RADIATION SAFETY REQUIREMENTS FOR INDUSTRIAL RADIOGRAPHIC OPERATIONS. Parts 4731.4000 to 4731.4360 prescribe licensing requirements for the use of sealed sources containing radioactive material and radiation safety requirements fo…

4731.4010 SPECIFIC LICENSE; APPLICATION. A person must file an application for a specific license for use of sealed sources in industrial radiography on the application for radioactive material license form according to part 4731.3070. Statutory Authority: MS s 144.1201; 144.1202…

4731.4020 SPECIFIC LICENSE; INDUSTRIAL RADIOGRAPHY. An application for a specific license for the use of licensed material in industrial radiography shall be approved if the applicant: A. satisfies the general requirements under part 4731.3070, as appropriate, and any special req…

4731.4030 PERFORMANCE REQUIREMENTS; INDUSTRIAL RADIOGRAPHY EQUIPMENT. Subpart 1. ANSI standard. A. This subpart applies to equipment used in industrial radiographic operations. B. A radiographic exposure device, source assembly, or sealed source and all associated equipment must …

4731.4040 LIMITS ON EXTERNAL RADIATION LEVELS. The maximum exposure rate limits for storage containers and source changers are 200 millirems (2 mSv) per hour at any exterior surface, and ten millirems (0.1 mSv) per hour at one meter from any exterior surface with the sealed sourc…

4731.4050 LOCKING OF RADIOGRAPHIC EXPOSURE DEVICES, STORAGE CONTAINERS, AND SOURCE CHANGERS. Subpart 1. Radiographic exposure devices. A. A radiographic exposure device must have a lock or outer locked container designed to prevent unauthorized or accidental removal of the sealed…

4731.4060 RADIATION SURVEY INSTRUMENTS. Subpart 1. Required instruments. A licensee must keep sufficient calibrated and operable radiation survey instruments at each location where radioactive material is present to make the radiation surveys required under parts 4731.2000 to 473…

4731.4070 LEAK TESTING, REPLACEMENT, AND OTHER MODIFICATIONS OF SEALED SOURCES. Subpart 1. Authorized personnel. A. The replacement of any sealed source fastened to or contained in a radiographic exposure device and leak testing of any sealed source must be performed by persons a…

4731.4080 QUARTERLY INVENTORY. Subpart 1. Inventory required. A licensee must conduct a quarterly physical inventory to account for all sealed sources and for devices containing depleted uranium received and possessed under a license issued under parts 4731.4000 to 4731.4360. Sub…

4731.4090 EQUIPMENT INSPECTION AND MAINTENANCE. Subpart 1. Daily checks required. A licensee must perform visual and operability checks on survey meters, radiographic exposure devices and associated equipment, transport and storage containers, and source changers before use on ea…

4731.4100 PERMANENT RADIOGRAPHIC INSTALLATIONS; ENTRANCE CONTROLS. Subpart 1. Required entrance controls. An entrance that is used for personnel access to the high radiation area in a permanent radiographic installation must have: A. an entrance control of the type described in p…

4731.4110 LABELING; PACKAGING; SECURITY. Subpart 1. Required label. A licensee may not use a source changer or a container to store licensed material unless the source changer or the storage container has securely attached to it a durable, legible, and clearly visible label beari…

4731.4120 INDUSTRIAL RADIOGRAPHIC OPERATIONS. Subpart 1. Qualified personnel present. When radiography is performed at a location other than a permanent radiographic installation, the radiographer must be accompanied by at least one other qualified radiographer or an individual w…

4731.4130 RADIATION SAFETY OFFICER. Subpart 1. Generally. A licensee's radiation safety officer must ensure that radiation safety activities are performed according to approved procedures and regulatory requirements in the daily operation of the licensee's program. Subp. 2. Minim…

4731.4140 RADIOGRAPHER TRAINING. Subpart 1. Requirements; radiographer. A licensee may not permit an individual to act as a radiographer until the individual: A. receives training according to subpart 6; B. completes a minimum of two months of on-the-job training; C. is certified…

4731.4150 OPERATING AND EMERGENCY PROCEDURES. Subpart 1. Required procedures. A licensee must establish operating and emergency procedures that include, as a minimum, instructions in: A. appropriate handling and use of licensed sealed sources and radiographic exposure devices so …

4731.4160 SUPERVISION OF RADIOGRAPHER'S ASSISTANTS. When a radiographer's assistant uses radiographic exposure devices, associated equipment, or sealed sources or conducts radiation surveys required under part 4731.4180, subpart 1, item B, to determine that the sealed source has …

4731.4170 PERSONNEL MONITORING. Subpart 1. Monitoring requirements. A. A licensee may not permit an individual to act as a radiographer or a radiographer's assistant unless, at all times during radiographic operations, each individual wears, on the trunk of the body, a combinatio…

4731.4180 RADIATION SURVEYS. Subpart 1. Survey requirements. A licensee must: A. conduct radiation surveys with a calibrated and operable radiation survey instrument that meets the requirements under part 4731.4060; B. using a survey instrument meeting the requirements of item A,…

4731.4190 SURVEILLANCE. During a radiographic operation, the radiographer, or the other individual present as required under part 4731.4120, must maintain continuous direct visual surveillance of the operation to protect against unauthorized entry into a high radiation area excep…

4731.4200 POSTING. All areas in which industrial radiography is being performed must be conspicuously posted according to part 4731.2310. Exceptions under part 4731.2320 do not apply to industrial radiographic operations. Statutory Authority: MS s 144.1202; 144.1203 History: 29 S…

4731.4210 RECORDS; SPECIFIC LICENSE FOR INDUSTRIAL RADIOGRAPHY. A licensee must maintain a copy of its license, license conditions, documents incorporated by reference, and amendments to each of these items until superseded by new documents approved by the commissioner, or until …

4731.4220 RECORDS; RECEIPT AND TRANSFER OF SEALED SOURCES. Subpart 1. Receipt and transfer records. A licensee must maintain records showing the receipts and transfers of sealed sources and devices using depleted uranium for shielding and retain each record for three years after …

4731.4240 RECORDS; LEAK TESTING. A licensee must maintain records of leak test results for sealed sources and for devices containing depleted uranium. The results must be stated in units of microcuries (becquerels). The licensee must retain each record for three years after it is…

4731.4250 RECORDS; QUARTERLY INVENTORY. Subpart 1. Quarterly inventory records. A licensee must maintain records of the quarterly inventory of sealed sources and of devices containing depleted uranium as required under part 4731.4080 and retain each record for three years after i…

4731.4260 UTILIZATION LOGS. Subpart 1. Logs required. A licensee must maintain utilization logs showing for each sealed source: A. a description, including the make, model, and serial number, of the radiographic exposure device or transport or storage container in which the seale…

4731.4270 RECORDS; INSPECTION AND MAINTENANCE. Subpart 1. Inspection and maintenance records. A licensee must maintain records specified under part 4731.4090 of equipment problems found in daily checks and quarterly inspections of radiographic exposure devices, transport and stor…

4731.4290 RECORDS; TRAINING AND CERTIFICATION. Subpart 1. Training and certification records. A licensee must maintain records of training and certification of each radiographer and each radiographer's assistant for three years and must include: A. radiographer certification docu…

4731.4310 RECORDS; PERSONNEL MONITORING. According to part 4731.4170, a licensee must maintain records of: A. direct reading dosimeter readings and yearly operability checks according to part 4731.4170, subparts 2 and 3, for three years after the record is made; B. alarming ratem…

4731.4330 LOCATION OF DOCUMENTS AND RECORDS. Subpart 1. Records in one location. A licensee must maintain copies of all records required under this chapter at the location identified under part 4731.4020, item J. Subp. 2. Records at each location. A licensee must maintain copies …

4731.4350 NOTIFICATIONS. Subpart 1. Immediate notification required. A licensee must notify the commissioner as soon as possible but not later than four hours after the discovery of any event that prevents immediate protective actions necessary to avoid exposures to radiation or …

4731.4360 RADIOGRAPHER CERTIFICATION. Subpart 1. Requirements for an independent certifying organization. An independent certifying organization must: A. be an organization such as a society or association whose members participate in, or have an interest in, the fields of indust…

4731.4400 APPLICABILITY FOR THE USE OF RADIOACTIVE MATERIALS IN THE HEALING ARTS. Parts 4731.4400 to 4731.4527 apply to the medical use of radioactive material and provide for issuing specific licenses authorizing the medical use of radioactive material. Parts 4731.4400 to 4731.4…

4731.4401 PROTECTION OF HUMAN RESEARCH SUBJECTS. A. A licensee may conduct research involving human research subjects only if the licensee uses radioactive materials specified in the license and for the uses authorized in the license. B. If the research is conducted, funded, supp…

4731.4402 IMPLEMENTATION. Subpart 1. License exemption. If a license condition exempted a licensee from a provision of Code of Federal Regulations, title 10, part 35, on October 24, 2002, then the license condition continues to exempt the licensee from the requirements in the cor…

4731.4403 SPECIFIC LICENSE; MEDICAL USE OF RADIOACTIVE MATERIALS. Subpart 1. Specific license required. A. Except as provided in item B, a person may manufacture, produce, acquire, receive, possess, prepare, use, or transfer radioactive material for medical use only under a speci…

4731.4404 OTHER MEDICAL USES. A licensee may use radioactive material or a radiation source approved for medical use that is not specifically addressed in parts 4731.4432 to 4731.4479 if the applicant or licensee: A. submits the information required under part 4731.4403, subpart …

4731.4405 RADIATION PROTECTION PROGRAM. Subpart 1. Authority and responsibilities. A. In addition to the radiation protection program requirements under part 4731.2010, a licensee's management must approve in writing: (1) requests for license application, renewal, or amendment be…

4731.4407 SUPERVISED INDIVIDUALS. A. A licensee that permits the receipt, possession, use, or transfer of radioactive material by an individual under the supervision of an authorized user, as allowed under part 4731.4403, subpart 1, item B, subitem (1), must: (1) in addition to t…

4731.4408 WRITTEN DIRECTIVES. Subpart 1. Written directive required. A. A written directive must be dated and signed by an authorized user before administration of: (1) I-131 sodium iodide greater than 30 microcuries (1.11 MBq); (2) any therapeutic dosage of unsealed radioactive …

4731.4409 PROCEDURES FOR ADMINISTRATIONS REQUIRING WRITTEN DIRECTIVE. A. For any administration requiring a written directive, a licensee must develop, implement, and maintain written procedures to provide high confidence that: (1) the patient's or human research subject's identi…