Current through all regulations passed and filed through March 18, 2024
In addition to the applicable rules in this chapter and Chapter
3701:1-38 of the Administrative Code, handlers of cabinet systems
will
comply with the following:
(A) All
cabinet system will meet the following equipment standards:
(1) Radiation emitted from a cabinet system
will not
exceed an exposure of 4.4 microgray (0.5 milliroentgen) in one hour at any
point five centimeters outside the external surface.
(2) Cabinet systems provided with at least
one port will be designed such that the insertion of any part
of the human body through any port into the primary beam
will not
be possible.
(3) Cabinet systems
provided with at least one aperture will be designed
such that the insertion of any part of the human body through any aperture
will
not be possible.
(4) Safety
Interlocks:
(a) Each door
will
have a minimum of two safety interlocks. One, but not both of the
obligated interlocks will be such
that door opening results in physical disconnection of the energy supply
circuit to the high-voltage generator, and such disconnection
will not
be dependent upon any moving part other than the door;
(b) Each access panel
will
have at least one safety interlock;
(c) Following interruption of x-ray
generation by the functioning of any safety interlock, use of a control
provided in accordance with paragraph (A)(6)(b) of this rule
will be
necessary for resumption of x-ray generation; and
(d) Failure of any single part of the
enclosed fail-safe system will not cause failure of more than one
obligated safety interlock.
(5) A ground fault will not result
in the generation of x-rays.
(6)
Controls and indicators will provide:
(a) A
key-actuated control to ensure that x-ray generation is not possible with the
key removed;
(b) A control or
controls to initiate and terminate the generation of x-rays other than by
functioning of a safety interlock or the main power control;
(c) Two independent means which indicate when
and only when x-rays are being generated, unless the x-ray generation period is
less than one-half second, in which case the indicators
will be
activated for one-half second, and which are discernible from any point at
which initiation of x-ray generation is possible. Failure of a single part of
the cabinet system will not cause failure of both indicators to perform
their intended function. One, but not both, of the indicators
obligated by this paragraph may be a milliammeter
labeled to indicate x-ray tube current. All other indicators
will be
legibly labeled "X-RAY ON";
(d)
Additional means other than milliammeters which indicate when and only when
x-rays are being generated, unless the x-ray generation period is less than
one-half second in which case the indicators will be
activated for one-half second, as needed to insure that at least one indicator
is visible from each door, access panel, and port, and is legibly labeled
"X-RAY ON"; and
(e) Warning labels:
(i) There will be
permanently affixed or inscribed on the cabinet x-ray system at the location of
any controls which can be used to initiate x-ray generation, a clearly legible
and visible label bearing the statement: "CAUTION: X-RAYS PRODUCED WHEN
ENERGIZED."
(ii) There
will be
permanently affixed or inscribed on the cabinet x-ray system adjacent to each
port a clearly legible and visible label bearing the statement: "CAUTION: DO
NOT INSERT ANY PART OF THE BODY WHEN SYSTEM IS ENERGIZED - X-RAY
HAZARD."
(B) In addition to the
obligations specified in paragraph (A) of this rule,
cabinet systems that are designed to admit humans will provide:
(1) A control within the enclosure for
preventing and terminating x-ray generation, which is electrically and/or
mechanically separated from the interlock system and cannot be reset,
overridden or bypassed from the outside of the enclosure.
(2) No means by which x-ray generation can be
initiated from within the enclosure.
(3) Audible and visible warning signals
within the enclosure that are actuated for at least ten seconds immediately
prior to the first initiation of x-ray generation after closing any door
designed to admit humans. Failure of any single part of the cabinet system
will not
cause failure of both the audible and visible warning signals.
(4) A visible warning signal within the
enclosure which remains actuated when and only when x-rays are being generated,
unless the x-ray generation period is less than one-half second in which case
the indicators will be activated for one-half second.
(5) All entrances into the enclosure
will be
provided with a conspicuously visible warning device, which operates only when
radiation is being produced.
(6)
Signs indicating the meaning of the warning signals provided pursuant to
paragraphs (B)(3) and (B)(4) of this rule and containing instructions for the
use of the control provided pursuant to paragraph (B)(1) of this rule. These
signs will be legible, accessible to view, and illuminated
when the main power control is in the "on" position.
(7) A means for a person within the enclosure
to be able to egress at all times.
(C) In addition to the
obligations specified in paragraph (A) of this rule,
nonhuman security screening systems and cabinet x-ray systems with accessible
openings will:
(1) Have means
to ensure operator presence at the control area in a position which permits
surveillance of the openings and doors during generation of
x-radiation.
(2) During an exposure
or preset succession of exposures of one-half second or greater duration,
provide the means to enable the operator to terminate the exposure or preset
succession of exposures at any time.
(3) During an exposure or preset succession
of exposures of less than one-half second duration, may provide the means to
allow completion of the exposure in progress but will enable the
operator to prevent additional exposures.
(D) Cabinet systems
will be
evaluated and the results recorded every three months not to exceed fourteen
weeks, by individuals qualified according to paragraph (H) of rule
3701:1-68-02 of the
Administrative Code, unless the system has been locked out and tagged "DO NOT
USE" and is under the administrative control of the IRRP:
(1) The evaluation will verify:
(a) Proper functioning of each interlock,
control, indicator and warning signal; and
(b) Each label is legible and properly
affixed in the appropriate location.
(2) If an interlock, control, indicator or
warning signal fails, it
will be
immediately labeled as defective and repaired or replaced within seven calendar
days.
(E) Radiation area
surveys will be performed and the results recorded to confirm
compliance with paragraph (A)(1) of this rule and paragraph (A) of rule
3701:1-38-14 of the
Administrative Code in accordance with the following:
(1) Upon installation of the equipment;
(2) During the performance of maintenance,
calibration and other procedures if the procedures obligate the
presence of a primary beam; and
(3)
Any time a visual inspection of the cabinet system reveals an abnormal
condition.
(F) A
physical radiation survey will be made after each radiographic exposure and
before entry of personnel into a cabinet system designed to admit humans to
verify that the radiation-generating equipment is not still producing
radiation.
(1) Personnel devices providing an
audible signal when activated by radiation will be acceptable for the survey,
provided:
(a) Proper operation of the audible
detection device is checked and recorded daily;
(b) The audible device is designed so as to
clearly indicate entry into a 0.02 mSv (two mrem) per hour or greater radiation
field; and
(c) All personnel
working with the cabinet system are equipped with such a device; or
(2) Stationary area monitors
providing an audible signal when activated by radiation will be acceptable for
the survey, provided:
(a) Proper operation of
the stationary detection device is checked and recorded daily;
(b) The stationary device is designed so as
to clearly indicate entry into a 0.02 mSv (two mrem) per hour or greater
radiation field; and
(c) Stationary
area monitors are evaluated annually to determine that the audible signal
operates at a 0.02 mSv (two mrem) per hour radiation field.
(G) The "Individual
Responsible for Radiation Protection" (IRRP) will be
qualified in accordance with paragraph (H) of rule
3701:1-68-02 of the
Administrative Code.