Minnesota Administrative Rules
Agency 144 - Health Department
Chapter 4731 - RADIATION SAFETY
IRRADIATORS
Part 4731.6170 - OPERATING AND EMERGENCY PROCEDURES

Universal Citation: MN Rules 4731.6170

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

Subpart 1. Operating procedures.

A licensee must have and follow written operating procedures for:

A. operation of the irradiator, including entering and leaving the radiation room;

B. use of personnel dosimeters;

C. surveying the shielding of panoramic irradiators;

D. monitoring pool water for contamination while the water is in the pool and before release of pool water to unrestricted areas;

E. leak testing of sources;

F. inspection and maintenance checks required under part 4731.6210;

G. loading, unloading, and repositioning sources, if the operations will be performed by the licensee; and

H. inspection of movable shielding required under part 4731.6060, subpart 1, item H, if applicable.

Subp. 2. Emergency procedures.

A licensee must have and follow emergency or abnormal event procedures, appropriate for the irradiator type, for:

A. sources stuck in the unshielded position;

B. personnel overexposures;

C. a radiation alarm from the product exit portal monitor or pool monitor;

D. detection of leaking sources, pool contamination, or an alarm caused by contamination of pool water;

E. a low or high water level indicator, an abnormal water loss, or leakage from the source storage pool;

F. a prolonged loss of electrical power;

G. a fire alarm or explosion in the radiation room;

H. an alarm indicating unauthorized entry into the radiation room, area around the pool, or another alarmed area;

I. natural phenomena, including an earthquake, a tornado, flooding, or other phenomena as appropriate for the geographical location of the facility; and

J. the jamming of automatic conveyor systems.

Subp. 3. Revision of procedures.

A licensee may revise operating and emergency procedures without commissioner approval only if:

A. the revisions do not reduce the safety of the facility;

B. the revisions are consistent with the outline or summary of procedures submitted with the license application;

C. the revisions have been reviewed and approved by the radiation safety officer; and

D. the users or operators have been instructed and tested on the revised procedures before the procedures are put into use.

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.
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