Utah Admin. Code R313-35-100 - Analytical X-Ray Systems Excluding Cabinet X-Ray Systems
(1) Equipment. Analytical x-ray systems not
contained in cabinet x-ray systems shall meet all the following requirements.
(a) A device which prevents the entry of
portions 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 for
open-beam configurations.
(i) Pursuant to
R313-12-55(1),
an application for an exemption from R313-35-100(1)(a) shall contain the
following information:
(A) a description of
the various safety devices that have been evaluated;
(B) the reason that 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.
(ii) applications for exemptions
to R313-35-100(1)(a) shall be submitted to the Director.
(b) Open-beam configurations shall be
provided with a readily discernible indication of:
(i) the "on" or "off" status of the x-ray
tube which shall be located near the radiation source housing if the primary
beam is controlled in this manner; or
(ii) the "open" or "closed" status of the
shutters which shall be located near ports on the radiation source housing, if
the primary beam is controlled in this manner.
(c) Warning devices shall be labeled so that
their purpose is easily identified and the devices shall be conspicuous at the
beam port. On equipment installed after July 1, 1989, warning devices shall
have fail-safe characteristics.
(d)
Unused ports on radiation source housings shall be secured in the closed
position in a manner which will prevent casual opening. Security requirements
will be deemed met if the beam port cannot be opened without the use of tools
that are not part of the closure.
(e) Analytical x-ray systems shall be labeled
with a readily discernable sign or signs bearing a radiation symbol which meets
the requirements of
R313-15-901 and the
words:
(i) "CAUTION-HIGH INTENSITY X-RAY
BEAM," or words having a similar intent, on the x-ray tube housing;
and
(ii) "CAUTION RADIATION - THIS
EQUIPMENT PRODUCES RADIATION WHEN ENERGIZED," or words having a similar intent,
near switches that energize an x-ray tube.
(f) On analytical x-ray systems with
open-beam configurations which are installed after July 1, 1989, ports 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.
(g) An easily visible warning light labeled
with the words "X-RAY ON," or words having a similar intent, shall be located
near switches that energize an x-ray tube and near x-ray ports. They shall be
illuminated only when the tube is energized.
(h) On analytical x-ray systems installed
after July 1, 1989, warning lights shall have fail-safe
characteristics.
(i) X-ray
generators shall be supplied with a protective cabinet which limits leakage
radiation measured at a distance of five centimeters from its surface so that
they are not capable of producing a dose equivalent in excess of 2.5
microsieverts (0.25 millirem) in one hour.
(j) The components of an analytical x-ray
system located in an uncontrolled area shall be arranged and include sufficient
shielding or access control so that no radiation levels exist in areas
surrounding the component group which could result in a dose to an individual
present therein in excess of the dose limits given in
R313-15-301.
(2) Personnel Requirements.
(a) An individual shall not be permitted to
operate or maintain an analytical x-ray system unless the individual has
received instruction which satisfies the requirements of
R313-18-12(1).
The instruction shall include:
(i)
identification of radiation hazards associated with the use of the analytical
x-ray system;
(ii) the significance
of the various radiation warnings and safety devices incorporated into the
analytical x-ray system, or the reasons they have not been installed on certain
pieces of equipment and the extra precautions required in these
cases;
(iii) proper operating
procedures for the analytical x-ray system;
(iv) symptoms of an acute localized exposure;
and
(v) proper procedures for
reporting an actual or suspected exposure.
(b) Registrants shall maintain records which
demonstrate compliance with the requirements of R313-35-100(2)(a) for a period
of three years after the termination of the individual.
(c) Normal operating procedures shall be
written and available to analytical x-ray system workers. An individual shall
not be permitted to operate analytical x-ray systems using procedures other
than those specified in the normal operating procedures unless the individual
has obtained written approval of the registrant or the registrant's
designee.
(d) An individual shall
not bypass a safety device unless the individual has obtained the written
approval of the registrant or the registrant's designee. Approval shall be for
a specified period of time. When a safety device has been bypassed, a readily
discernible sign bearing the words "SAFETY DEVICE NOT WORKING," or words having
a similar intent, shall be placed on the radiation source housing.
(3) Personnel Monitoring. In
addition to the requirements of
R313-15-502,
finger or wrist dosimetric devices shall be provided to and shall be used by:
(a) analytical x-ray system workers using
equipment having an open-beam configuration and not equipped with a safety
device; and
(b) personnel
maintaining analytical x-ray systems if the maintenance procedures require the
presence of a primary x-ray beam when local components in the analytical x-ray
system are disassembled or removed.
(4) Posting. Areas or rooms containing
analytical x-ray systems not considered to be cabinet x-ray systems shall be
conspicuously posted to satisfy the requirements in
R313-15-902.
Notes
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