Nebraska Administrative Code › Topic - HEALTH AND HUMAN SERVICES SYSTEM › Title 180 - CONTROL OF RADIATION › Chapter 8 - RADIATION SAFETY REQUIREMENTS FOR NON HEALING ARTS RADIATION GENERATING DEVICES › Section 180-8-011 - SHIELDED ROOM RADIATION GENERATING DEVICES

Current through June 17, 2024
Radiation generating devices in a shielded room must meet the
	 requirements of section 003 through 007 and the following:
011.01
POSTING.
All
  entrances to the room containing the radiation generating device must be posted
  "CAUTION" "HIGH RADIATION AREA", or "GRAVE DANGER" "VERY HIGH RADIATION AREA",
  as required by 180 NAC 4.
011.02
ENTRANCE INTERLOCKS.
All entrances into the shielded
  room must be provided with interlocks. After an interlock has been interrupted,
  broken, or tripped, x-rays must only be produced again from the control panel.
  Interlocks must not be used to shut off the x-ray equipment except in an
  emergency or during testing.
011.03
ENTRANCE WARNING DEVICES.
All entrances into the
  shielded room must be provided with a clearly visible warning device that
  operates only when radiation is being produced. The warning device must be
  labeled in accordance with subsection
  003.01.
011.04
ROOM WARNING
  LIGHTS.
The interior of the shielded room must be provided with
  flashing or rotating warning lights that only operate when radiation is being
  produced. These lights must be positioned so they can be observed from any
  position or orientation in the room. The lights must be posted indicating the
  meaning of the warning signal and instructions on what to do when the lights
  are operating; the posting must be legible, clearly visible, and accessible to
  view.
011.05
AUDIBLE
  ROOM WARNING DEVICE.
An audible warning signal in the room must be
  activated and give individuals enough time to leave the room prior to the first
  initiation of radiation after the closing of any opening that can admit
  personnel. The registrant must post the meaning of the warning signal and
  instructions on what to do when the signal is operating; the posting must be
  legible, clearly visible, and accessible to view.
011.06
EMERGENCY
  SHUT-OFF.
If dose rates exceed the High Radiation Area limits, an
  emergency shut off switch must be accessible to individuals in the high
  radiation areas. The switch and it's mode of operation must be identified by a
  clearly visible sign posted adjacent to the switch. The emergency shut-off
  switch must include a manual reset that must be reset at the switch before
  x-rays can be produced again from the control panel. After an emergency
  shut-off switch has been activated, x-rays must only be produced again from the
  control panel.
011.07
SEPARATE ELECTRICAL SYSTEMS.
The interlock system and
  the emergency shutoff system must be separate electrical or mechanical
  systems.
011.08
ENTRY
  INTO THE SHIELDED ROOM.
After each exposure and before entry of
  any personnel, the control panel must indicate that the radiation generating
  device is no longer producing radiation. If the control panel does not indicate
  that the radiation generating device is not producing radiation, a survey must
  be performed upon entry to the shielded room to ensure that the radiation
  generating device is no longer producing radiation.
011.09
PERSONNEL
  MONITORING.
All personnel associated with the x-ray equipment must
  be provided with personnel monitoring devices that must be calibrated for the
  x-ray energies being utilized. Records of personnel exposure must be
  maintained.
011.10
TRAINING.
The registrant must not allow any individual
  to operate a radiation generating device in a shielded room until that
  individual has received a copy of, instruction in, and demonstrated an
  understanding of, operating and emergency procedures for the unit and
  competence in its use. Records must be maintained of all operator
  training.
011.11
CONTROL PANEL SECURITY.
The equipment control panel
  must be provided with a locking device to prevent unauthorized use. The locking
  device must, when locked, prevent the production of radiation by the
  equipment.
011.12
MALFUNCTIONS.
If a safety or warning device
  malfunctions, the control panel must be locked in the "off" position. The
  control panel must not be used, except as necessary for repair or replacement
  of the malfunctioning safety or warning device, until the safety or warning
  device is functioning properly.