Ohio Administrative Code
Title 3701:1 - Radiation Control
Chapter 3701:1-52 - Licensing and Safety Requirements for Irradiators
Section 3701:1-52-16 - Design requirements
Universal Citation: OH Admin Code 3701:1-52-16
Current through all regulations passed and filed through March 18, 2024
Irradiators whose construction begins after July 1, 1993, must meet the design requirements of this rule.
(A) For all irradiators, the licensee shall evaluate the location and sensitivity of the monitor to detect sources carried by the product conveyor system as required by paragraph (A) of rule 3701:1-52-11 of the Administrative Code. The licensee shall verify that the product conveyor is designed to stop before a source on the product conveyor would cause a radiation overexposure to any person.
(B) For panoramic irradiators the licensee shall:
(1) Design shielding walls to meet
generally accepted building code requirements for reinforced concrete and
design the walls, wall penetrations, and entranceways to meet the radiation
shielding requirements of rule
3701:1-52-09 of the
Administrative Code. If the irradiator will use more than 2 x
1017 becquerels (five million curies) of activity,
evaluate the effects of heating of the shielding walls by the irradiator
sources;
(2) Design the foundation,
with consideration given to soil characteristics, to ensure it is adequate to
support the weight of the facility shield walls;
(3) Verify from the design and logic diagram
that the access control system will meet the requirements of rule
3701:1-52-08 of
the Administrative Code;
(4) Verify
that the number, location, and spacing of the smoke and heat detectors are
appropriate to detect fires and that the detectors are protected from
mechanical and radiation damage, and verify that the design of the fire
extinguishing system provides the necessary discharge patterns, densities, and
flow characteristics for complete coverage of the radiation room and that the
system is protected from mechanical and radiation damage;
(5) Verify that the source rack will
automatically return to the fully shielded position if offsite power is lost
for more than ten seconds;
(6) If
to be built in seismic areas, the licensee shall design the reinforced concrete
radiation shields to retain their integrity in the event of an earthquake by
designing to the seismic requirements of an appropriate source such as American
Concrete Institute Standard ACI 318-89, "Building Code Requirements for
Reinforced Concrete," Chapter 21, "Special Provisions for Seismic Design,"
revised 1992 (this publication may be obtained from the American Concrete
Institute, PO Box 9094, Farmington Hills, MI 48331, telephone (248)848-3700,
http://www.concrete.org/store.aspx )
or local building codes, if current;
(7) Verify that electrical wiring and
electrical equipment in the radiation room are selected to minimize failures
due to prolonged exposure to radiation;
(8)
Determine that source rack drops due to loss of power will not damage the
source rack and that source rack drops due to failure of cables (or alternate
means of support) will not cause loss of integrity of sealed sources;
and
(9) Review the design of the
mechanism that moves the sources to assure that the likelihood of a stuck
source is low and that, if the rack sticks, a means exists to free it with
minimal risk to personnel.
(C) For pool irradiators the licensee shall:
(1) Design the pool to assure that it is leak
resistant, that it is strong enough to bear the weight of the pool water and
shipping casks, that a dropped cask would not fall on sealed sources, that all
outlets or pipes meet the requirements of paragraph (B) of rule
3701:1-52-13 of
the Administrative Code, and that metal components are metallurgically
compatible with other components in the pool;
(2) Verify that the design of the water
purification system is adequate to meet the requirements of paragraph (E) of
rule
3701:1-52-13 of
the Administrative Code. The system must be designed so that water leaking from
the system does not drain to unrestricted areas without being
monitored;
(3) Verify that there
are no crevices on the source or between the source and source holder that
would promote corrosion on a critical area of the source; and
(4) If the licensee uses radiation monitors
to detect contamination under paragraph (B) of rule
3701:1-52-22
of the Administrative Code, the licensee shall verify that the design of
radiation monitoring systems to detect pool contamination includes sensitive
detectors located close to where contamination is likely to
concentrate.
Disclaimer: These regulations may not be the most recent version. Ohio may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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