Illinois Administrative Code › Title 32 - ENERGY › Part 346 - LICENSES AND RADIATION SAFETY REQUIREMENTS FOR IRRADIATORS › Subpart C - DESIGN AND PERFORMANCE REQUIREMENTS OF IRRADIATORS › Section 346.230 - Access Control

Current through Register Vol. 48, No. 28, July 12, 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 conveyer 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 their 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 doors and barriers shall not prevent
				any person 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 person entering the room aware of the hazard. The alarm shall also alert at
				least one other person who is onsite of the entry. That person 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 a personnel access door 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). 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
				personnel in the radiation room that the sources will be moved from their
				shielded position. The alarms shall give personnel 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 a person 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 positions unless the control has been
				activated and the door or barrier to the radiation room has been closed within
				a pre-set 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 be posted as required by 32 Ill. Adm.
				Code 340.920. Radiation postings for
				panoramic irradiators shall comply with the posting requirements of 32 Ill.
				Adm. Code 340.920, except that signs 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. This
				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 that shall be
				locked to prevent access when the irradiator is not attended. Only operators
				and facility management shall have access to keys to 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 a person (not necessarily onsite) who is prepared to respond or summon
				assistance.