Ala. Admin. Code 420, ch. 420-3-26, 420-3-26-.05, app C
1. Space Requirements.
The operator shall be allotted not less than 7.5 square feet of unobstructed floor space in the booth.
(1) The minimum space as indicated above may be any geometric configuration with no dimension of less than 2 feet.
(2) The space shall be allotted excluding any encumbrance by the console, such as overhang or cables, or other similar encroachments.
(3) The operator's station at the control shall be behind a protective barrier, either in a separate room, in a protected booth, or behind a shield which will intercept the useful beam and any radiation which has been scattered only once.
(4) The booth walls shall be at least 7 feet high and shall be permanently fixed to the floor or other structure as may be necessary.
(5) When a door or movable panel is used as an integral part of the booth structure, it must have a permissive device which will prevent an exposure when the door or panel is not closed (this type of booth structure is not recommended).
2. Switch Placement.
The operator's switch for the radiographic machine shall be fixed within the booth and:
(1) Shall be at least 30 inches from any open edge of the booth wall which is proximal to the examining table.
(2) Shall allow the operator to use the majority of the available viewing windows.
3. Viewing System Requirements.
Each booth shall have at least one viewing device which will:
(1) Be so placed that the operator can view the patient during any exposure, and
(2) The device shall be so placed that he can have full view of any occupant of the room and should be so placed that he can view any entry into the room. If any door, which allows access to the room, cannot be seen from the booth, then that door must have a permissive device controlling the exposure which will prevent the exposure if the door is not closed.
(3) When the viewing system is a window, the following requirements also apply:
(a) It shall have a visible area of at least 1 square foot the base of which is at least 4.5 feet above the floor.
(b) The distance between the proximal edge of the window and the open edge of the booth shall not be less than 13 inches.
(c) The glass shall have the same lead equivalence as that required in the booth's wall in which it is to be mounted.
(4) When viewing system is by mirrors, the mirror(s) shall be located as to accomplish the general requirements as in (1) above.
(5) When the viewing system is by electronic means (e.g., TV, etc.):
(a) The camera shall be so located as to accomplish the general requirements in (1) above, and
(b) There shall be an alternate viewing system as a back up for electronic failure.
Ala. Admin. Code 420, ch. 420-3-26, 420-3-26-.05, app C