Current through September 24, 2024
1. Safety Device. A
device which prevents the entry of any portion of an individual's body into the
primary x-ray beam path or which causes the beam to be shut off upon entry into
its path shall be provided on all open- beam configurations. A registrant may
apply to the Agency for an exemption from the requirements of a safety device.
Such application shall include:
a. a
description of the various safety devices that have been evaluated;
b. the reason each of these devices cannot be
used; and
c. a description of the
alternative methods that will be employed to minimize the possibility of an
accidental exposure, including procedures to assure that operators and others
in the area will be informed of the absence of safety devices.
2 Warning Devices
a. Open-beam configurations shall be provided
with a readily discernible indication of:
i.
x-ray tube "on-off status located near the radiation source housing, if the
primary beam is controlled in this manner; and/or
ii. shutter "open-closed" status located near
each port on the radiation source housing, if the primary beam is controlled in
this manner.
b. An
easily visible warning light labeled with the words "X-RAY ON", or words having
a similar intent, shall be located:
i. near
any switch that energizes an x-ray tube and shall be illuminated only when the
tube is energized; or
ii. in the
case of a radioactive source, near any switch that opens a housing shutter and
shall be illuminated only when the shutter is open.
c. Warning devices shall be labeled so that
their purpose is easily identified. On equipment installed after June 30, 1978,
warning devices shall have fail-safe characteristics.
3. Ports. Unused ports on
radiation source housings shall be secured in the closed position in a manner
which will prevent casual opening.
4. Labeling. All analytical x-ray equipment
shall be labeled with a readily discernible sign or signs bearing the radiation
symbol and the words:
a. "CAUTION - HIGH
INTENSITY X-RAY BEAM", or words having a similar intent, on the x-ray source
housing; and
b. "CAUTION RADIATION
- THIS EQUIPMENT PRODUCES RADIATION WHEN ENERGIZED", or words having a similar
intent, near any switch that energizes an x-ray tube if the radiation source is
an x-ray tube; or
c. "CAUTION -
RADIOACTIVE MATERIAL", or words having a similar intent, on the source housing
in accordance with 1 .4.29 of these regulations if the radiation source is a
radionuclide.
5.
Shutters. On open-beam configurations installed after January 12, 1980, each
port on the radiation source housing shall be equipped with a shutter that
cannot be opened unless a collimator or a coupling has been connected to the
port.
6. Radiation Source Housing.
Each radiation source housing shall be subject to the following requirements:
a. Each x-ray tube housing shall be equipped
with an interlock that shuts off the tube if it is removed from the radiation
source housing or if the housing is disassembled.
b. Each radioactive source housing or port
cover or each x-ray tube housing shall be so constructed that, with all
shutters closed, the radiation measured at a distance of 5 centimeters from its
surface is not capable of producing a dose in excess of 2.5 millirems (0.025
mSv) in one hour. For systems utilizing x-ray tubes, this limit shall be met at
any specified tube rating.
7. Generator Cabinet. Each x-ray generator
shall be supplied with a protective cabinet which limits leakage radiation
measured at a distance of 5 centimeters from its surface such that it is not
capable of producing a dose in excess of 0.25 millirem (2.5 µSv) in one
hour.
Miss. Code Ann.
§
45-14-11
