Minnesota Administrative Rules
Agency 144 - Health Department
Chapter 4731 - RADIATION SAFETY
STANDARDS FOR PROTECTION AGAINST RADIATION
Part 4731.2320 - EXCEPTIONS TO POSTING REQUIREMENTS

Universal Citation: MN Rules 4731.2320

Current through Register Vol. 49, No. 13, September 23, 2024

Subpart 1. Short-term storage.

A licensee is not required to post a caution sign in areas or rooms containing radioactive materials for periods of less than eight hours, if:

A. the materials are constantly attended during these periods by an individual who takes the precautions necessary to prevent the exposure of individuals to radiation or radioactive materials in excess of the limits established in parts 4731.2000 to 4731.2950; and

B. the area or room is subject to the licensee's control.

Subp. 2. Hospital; patient room.

A room or other area in a hospital that is occupied by a patient is not required to be posted with a caution sign if the patient could be released from licensee control under part 4731.4427.

Subp. 3. Sealed sources.

A room or area is not required to be posted with a caution sign because of the presence of a sealed source if the radiation level at 30 centimeters from the surface of the source container or housing does not exceed 0.005 rem (0.05 mSv) per hour.

Subp. 4. Hospital; teletherapy, remote afterloader, or gamma stereotactic radiosurgery units.

A room in a hospital or clinic that is used for teletherapy, remote afterloader, or gamma stereotactic radiosurgery units is exempt from the requirement to post a caution sign if:

A. access to the room is controlled according to part 4731.4467; and

B. personnel in attendance take necessary precautions to prevent the inadvertent exposure of workers, other patients, and members of the public to radiation in excess of the limits established in parts 4731.2000 to 4731.2950.

Statutory Authority: MS s 144.1202; 144.1203

Disclaimer: These regulations may not be the most recent version. Minnesota may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.