Irradiators whose construction begins after 8-14-96 must meet
the design requirements of this section. The requirements must be met before
the start of the construction of the specific component, but do not have to be
met before submitting a license application. After construction of the
irradiator is completed, the licensee must submit to the department copies of
as-built construction drawings signed by the architect and the licensee.
Panoramic irradiators shall meet the
following design requirements:
The licensee shall design shielding walls to meet generally accepted building
code requirements for reinforced concrete and shall design the walls, wall
penetrations, and entrance ways to meet the radiation shielding requirements of
, F.A.C. If
the irradiator will use more than 2 x 1017 becquerels (5 million curies) of
activity, the licensee shall evaluate the effects of heating of the shielding
walls by the irradiator sources.
(b) Foundations. The licensee shall design
the foundation with consideration given to soil characteristics to ensure it is
adequate to support the weight of the facility.
(c) Source Rack. The licensee shall 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. The licensee shall review
the design of the mechanism which moves the sources to assure that the
likelihood of a stuck source is low and that if the rack sticks it can be freed
without causing radiation overexposure of personnel.
Access Control. The licensee shall verify
from the design and logic diagram that the access control system will meet the
requirements of Rule
(e) Fire Protection. The
licensee shall verify that the number, design, locations and spacing of the
smoke and heat detectors and extinguishing system are appropriate to detect
fires and that the detectors are protected from mechanical and radiation
damage. The licensee shall 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.
(f) Source Return. The licensee shall verify
that the source rack will be returned automatically to the fully shielded
position if off-site power is lost for more than 10 seconds. If a component of
the return mechanism fails, the design must allow for accomplishing the return
without causing radiation overexposures of personnel.
(g) Seismicity. For panoramic irradiators 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 seismic requirements of an appropriate source such as American
Concrete Institute Standard 318-89, "Building Code Requirements for Reinforced
Concrete," Chapter 21, "Special Provisions for Seismic Design," or local
(h) Wiring. The
licensee shall verify that electrical wiring and electrical equipment in the
radiation room are selected to minimize failures due to prolonged exposure to
irradiators shall meet the following design requirements:
Pool Integrity. The licensee shall 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 penetrations meet the requirements of
F.A.C., and that metal components are metallurgically compatible with other
components in the pool.
Handling System. The licensee shall design the water purification system to
meet the requirements of subsection
F.A.C. The system must be designed so that water leaking from the system does
not drain to unrestricted areas without being monitored. The licensee shall
design the water chiller system so that it shall compensate adequately for the
amount of heat generated by the sealed sources. The water handling system must
have remote controls capable of safely operating a contaminated
(c) Source rack. The
licensee shall 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. The lift mechanisms for the source rack and source transport cask must
be of designed working and breaking strength to lift safely a source transport
cask and sources into and out of the irradiator pool.
All irradiators shall meet the following
The licensee shall evaluate the location and sensitivity of the monitor to
detect sources carried by the product conveyor system as required by subsection
F.A.C. The licensee shall verify that the product conveyor will stop before a
source on the product conveyor causes a radiation overexposure. For pool
irradiators, the licensee shall verify that the radiation monitor on the water
purification system is located near the area in which elevated radiation levels
will be expected.
carriers. For irradiators using product carriers, the design of the carrier
shall prevent the carrier from opening or coming into contact with the source
rack or protective barrier. The design shall be submitted to the department for
(c) Floor penetrations.
No floor penetrations, including expansion joints, floor joints and drains,
shall allow the uncontrolled release of water from the radiation room that has
not been analyzed for its radioactive content.
Fla. Admin. Code Ann. R.
FS. Law Implemented
New 8-14-96, Formerly