Current through Register Vol. 49, No. 13, September 23, 2024
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 an event that prevents
immediate protective actions necessary to avoid exposures to radiation or
radioactive materials that could exceed regulatory limits or releases of
licensed material that could exceed regulatory limits. Reportable events under
this subpart include fires, explosions, toxic gas release, or similar
hazards.
Subp. 2.
24-hour notification required.
A licensee must notify the commissioner within 24 hours after
discovery of any of the following events involving licensed material:
A. an unplanned contamination event that:
(1) requires access to the contaminated area,
by workers or the public, to be restricted for more than 24 hours by imposing
additional radiological controls or by prohibiting entry into the
areas;
(2) involves a quantity of
material greater than five times the lowest annual limit on intake specified in
part 4731.2750 for the material; and
(3) restricts access to the area for a reason
other than to allow isotopes with a half-life of less than 24 hours to decay
prior to decontamination;
B. an event in which equipment is disabled or
fails to function as designed when:
(1) the
equipment is required by rule or license condition to prevent releases
exceeding regulatory limits, to prevent exposure to radiation and radioactive
materials exceeding regulatory limits, or to mitigate the consequences of an
accident;
(2) the equipment is
required to be available and operable when it is disabled or fails to function;
and
(3) no redundant equipment is
available and operable to perform the required safety function;
C. an event that requires
unplanned medical treatment at a medical facility of an individual with
spreadable radioactive contamination on the individual's clothing or body;
or
D. an unplanned fire or
explosion that damages any licensed material or any device, container, or
equipment containing licensed materials when:
(1) the quantity of material involved is
greater than five times the lowest annual limit on intake under part 4731.2750
for the material; and
(2) the
damage affects the integrity of the licensed material or its
container.
Subp.
3.
Preparation and submission of reports.
A. A licensee must make reports required
under subparts 1 and 2 by telephone to the commissioner according to part
4731.0200, subpart 5. To the extent that the information is available at the
time of notification, the information provided in the report must include:
(1) the caller's name and call-back telephone
number;
(2) a description of the
event, including date and time;
(3)
the exact location of the event;
(4) the isotopes, quantities, and chemical
and physical form of the licensed material involved; and
(5) any personnel radiation exposure data
available.
B. A licensee
that makes a report required under subpart 1 or 2 must submit a written
follow-up report within 30 days of the initial notification. Written reports
prepared as required by other rules may be submitted to fulfill this
requirement if the reports contain all of the necessary information and the
appropriate distribution is made. The written reports must be sent to the
commissioner. The reports must include:
(1) a
description of the event, including the probable cause of the event and the
manufacturer and model number, if applicable, of any equipment that failed or
malfunctioned;
(2) the exact
location of the event;
(3) the
isotopes, quantities, and chemical and physical form of the licensed material
involved;
(4) the date and time of
the event;
(5) corrective actions
taken or planned and the results of any evaluations or assessments;
and
(6) the extent of exposure of
individuals to radiation or to radioactive materials, without identification of
the individuals by name.
