Louisiana Administrative Code › Title 33 - ENVIRONMENTAL QUALITY › Part XV - Radiation Protection › Chapter 17 - Licensing and Radiation Safety Requirements for Irradiators › Section XV-1715 - Access Control

Current through Register Vol. 50, No. 6, June 20, 2024
A. Each
				entrance to a radiation room at a panoramic irradiator shall have a door or
				other physical barrier to prevent inadvertent entry of personnel, if the
				sources are not in the shielded position. Product conveyor systems may serve as
				barriers as long as they reliably and consistently function as a barrier. It
				shall not be possible to move the sources out of their shielded position if the
				door or barrier is open. Opening the door or barrier while the sources are
				exposed shall cause the sources to return promptly to the shielded position.
				The personnel entrance door or barrier shall have a lock that is operated by
				the same key used to move the sources. The control panel lock shall be designed
				so that the key cannot be removed unless the sources have been returned to the
				shielded position. The doors and barriers shall not prevent any individual in
				the radiation room from leaving.
B.
				In addition, each entrance to a radiation room at a panoramic irradiator shall
				have an independent backup access control to detect personnel entry while the
				sources are exposed. Detection of entry while the sources are exposed shall
				cause the sources to return to their fully shielded position and shall also
				activate a visible and audible alarm to make the individual entering the room
				aware of the hazard. The alarm shall also alert at least one other individual
				who is on-site of the entry. That individual shall be trained on how to respond
				to the alarm and prepared to promptly render or summon assistance.
C. A radiation monitor shall be provided to
				detect the presence of high radiation levels in the radiation room of a
				panoramic irradiator before personnel entry. The monitor shall be integrated
				with personnel access door locks to prevent room access when radiation levels
				are high. Attempted personnel entry while the monitor measures high radiation
				levels shall activate the alarm described in Subsection B of this Section. The
				monitor may be located in the entrance, normally referred to as the maze, but
				not in the direct radiation beam.
D. Before the sources move from their
				shielded position in a panoramic irradiator, the source control shall
				automatically activate conspicuous visible and audible alarms to alert people
				in the radiation room that the sources shall be moved from their shielded
				position. The alarms shall give individuals enough time to leave the room
				before the sources leave the shielded position.
E. Each radiation room at a panoramic
				irradiator shall have a clearly visible and readily accessible control that
				would allow an individual in the room to make the sources return to their fully
				shielded position.
F. Each
				radiation room of a panoramic irradiator shall contain a control that prevents
				the sources from moving from the shielded position unless the control has been
				activated and the door or barrier to the radiation room has been closed within
				a preset time after activation of the control.
G. Each entrance to the radiation room of a
				panoramic irradiator and each entrance to the area within the personnel access
				barrier of an underwater irradiator shall have a sign bearing the radiation
				symbol and the words, "Caution (or danger) radioactive material." Panoramic
				irradiators shall also have a sign stating "Grave danger, very high radiation
				area," but the sign may be removed, covered, or otherwise made inoperative when
				the sources are fully shielded.
H.
				If the radiation room of a panoramic irradiator has roof plugs or other movable
				shielding, it shall not be possible to operate the irradiator unless the
				shielding is in its proper location. The requirement may be met by interlocks
				that prevent operation if shielding is not placed properly or by an operating
				procedure requiring inspection of shielding before operating.
I. Underwater irradiators shall have a
				personnel access barrier around the pool, which shall be locked to prevent
				access when the irradiator is not attended. Only operators or facility
				management shall have access to keys that operate the personnel access barrier.
				There shall be an intrusion alarm to detect unauthorized entry when the
				personnel access barrier is locked. Activation of the intrusion alarm shall
				alert an individual who is not necessarily on-site, but who is prepared to
				respond or summon assistance.
AUTHORITY NOTE:
				  Promulgated in accordance with
				  R.S.
				  30:2001 et
				  seq.