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 particle accelerator systems
will
comply with the following :
(A) Radiation-generating equipment used for
particle acceleration will meet the
following equipment standards:
(1) All safety
instrumentation, readouts, and controls on the particle accelerator control
console will be clearly identified and easily
discernible.
(2) Each safety
interlock will be on a circuit which allows it to operate
independently of all other safety interlocks.
(3) All safety systems or interlocks
will be
designed so that any defect or component failure in the safety interlock system
prevents production of radiation by the accelerator.
(4) If a safety interlock system has been
tripped, it will only be possible to resume operation of the
particle accelerator by manually resetting controls at the position where the
safety interlock has been tripped, and at the control console.
(5) Each particle accelerator
will
bear a warning label on the control console which cautions individuals that
radiation is produced when it is energized, and any other warning label
obligated by rules adopted pursuant to Chapter
3701:1-38 of the Administrative Code.
(B) Handlers of particle accelerator systems
will
comply with the following radiation safety obligations:
(1) Each
particle accelerator installation will be provided with such shielding as is necessary
to assure compliance with the applicable rules adopted pursuant to Chapter
3701:1-38 of the Administrative Code.
(2) Each entrance into a target room or other
high radiation area will be provided with a safety interlock that shuts
down the machine in the event of any barrier penetration.
(3) Each high radiation area
will
have an audible and visual signal which will be
activated for at least fifteen seconds prior to the possible creation of such a
high radiation area. Such signals will be clearly discernible in all high radiation
areas.
(4) Each location designated
as a high radiation area, and each entrance to such location,
will be
equipped with visible signals that illuminate when, and only when the
high-voltage portion of the machine is being energized.
(5) An emergency power cutoff switch
will be
located and easily identifiable in all high radiation areas and
will
include a manual reset so that the accelerator cannot be restarted from the
accelerator control panel without resetting the cutoff switch.
(6) Appropriate portable monitoring
equipment, which is operable and has been appropriately calibrated for the
types of radiation being produced, will be
available at each particle accelerator facility. Such equipment
will be
calibrated at intervals not to exceed one year and after each servicing and
repair.
(7) The handler
will not
permit any individual to operate a particle accelerator system unless, at all
times during operations, each operator is supplied with and wears an
appropriate direct reading dosimeter and personnel dosimeter. Analog pocket
dosimeters will be recharged at the start of each shift.
Electronic dosimeters will be
battery-tested at the beginning of each shift. Each personnel dosimeter
will be
assigned to and worn by only one individual and the handler
will
assure that:
(a) Direct reading dosimeters are
read and exposures are recorded at the beginning and end of each
shift.
(b) If an individual's
pocket dosimeter is found to be off-scale, or the electronic personnel
dosimeter reads greater than two millisieverts (two hundred mrem), the
individual's personnel dosimeter will be sent for processing within twenty-four hours.
In addition, the individual will not resume work associated with the use of a
particle accelerator system until a determination of the individual's radiation
exposure has been made. This determination will be made by
the individual responsible for radiation protection (IRRP) or the IRRP's
designee. The results of this determination will be
recorded.
(c) Personnel dosimeters
will be
exchanged monthly unless the IRRP has performed an evaluation that indicates a
longer frequency is adequate; in this instance the frequency
will not
exceed three months.
(d) If a
personnel dosimeter is lost or damaged, the worker will cease work
immediately until a replacement personnel dosimeter is provided and the
exposure is calculated for the time period from issuance to loss or damage of
the personnel dosimeter. This calculation will be made by
the IRRP or the IRRP's designee. The results of the calculated exposure and the
time period for which the personnel dosimeter was lost or damaged
will be
recorded:
(i) After replacement, each
personnel dosimeter will be returned to the supplier for processing within
fourteen calendar days of the end of the monitoring period; or
(ii) In circumstances that make it impossible
to return each personnel dosimeter in fourteen calendar days, such
circumstances will be recorded.
(8) The safety interlock system
will not
be used to turn off the particle accelerator beam, except in an emergency or
when testing of the safety interlock system.
(9) If, for any reason, it is necessary to
intentionally bypass a safety interlock or interlocks, such action
will be:
(a) Authorized by the IRRP;
(b) Recorded in a permanent log;
(c) Posted as a written notice at the
accelerator control panel; and
(d)
Terminated as soon as possible.
(10) The particle accelerator
will be
secured when not in operation to prevent unauthorized use.
(C) In addition to the
radiation protection
obligations in rule
3701:1-68-02 of the
Administrative Code, handlers of particle accelerator systems
will
comply with the following :
(1) A
radiation expert,
with education and experience acceptable to the director,
will be
consulted in the design of a particle accelerator installation and called upon
to perform a radiation survey when the accelerator is first capable of
producing radiation.
(2) A
radiation shielding survey will be performed and recorded by a
radiation expert, with education and experience
acceptable to the director, when changes have been made in shielding,
operation, equipment, or occupancy of adjacent areas.
(3) All surveys will be made in
accordance with the written procedures established by a
radiation expert, with
education and experience acceptable to the director.
(4) Portable monitoring equipment
will be
tested for proper operation and the results recorded daily.
(5) Particle accelerator systems
will be
evaluated and the results recorded at least every three months not to exceed
fourteen weeks, by individuals qualified according to paragraph (I) 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 administrative control of the IRRP:
(a) The evaluation will verify:
(i) Proper functioning of interlocks and
warning devices; and
(ii) Each
label is legible and properly affixed in the appropriate location.
(b) In the event the safety
equipment is operating improperly, it will be
immediately reported to the IRRP and will be repaired
or replaced and never bypassed so as to enable radiation production.
(6) Radiation levels in all high
radiation areas will be continuously monitored. The monitoring devices
will be
electrically independent of the accelerator control and safety interlock
systems and capable of providing a readout at the control panel.
(7) A copy of the current operating and the
emergency procedures will be maintained at the particle accelerator system
control panel.
(D) The
IRRP will be qualified in accordance with
paragraph (I) of rule
3701:1-68-02 of the
Administrative Code. In addition to the obligations of paragraph (F) of rule
3701:1-68-02 of the
Administrative Code, the specific duties and authority of the IRRP for particle
accelerator systems include, but are not limited to:
(1) Termination of the operations if such
action is deemed necessary to minimize danger to public health and
safety.
(2) The development and
maintenance of a particle accelerator handbook that describes the electrical
circuits and the associated interlock systems. This handbook
will be
kept current as to any changes in the system.
(3) Documenting that individuals have
demonstrated competency in the use of the particle accelerator, related
equipment, and radiation survey instruments that will be used to monitor the
particle accelerator at that facility.