Radiological Health Support Operations
Monitoring results should be reviewed by the cognizant radiological control supervisor to ensure that all required
surveys have been performed and that the documentation is accurate and complete.
Results of current surveys or survey maps should be conspicuously posted to inform personnel of the radiological
Survey results should be made available to line management and used in support of pre - and post-job evaluations,
preparation or selection of appropriate radiological work permits, ALARA preplanning, contamination control, and
management of radiological control operations.
Monitoring data in each building or area should be compiled and reviewed at least quarterly. Changes or trends
should be noted and corrective actions assigned.
552 Radiation Exposure Monitoring
In addition to the requirements of Article 551, routine radiation monitoring programs should be established to
ensure that surveys are performed at a frequency that is consistent with the existing and potential hazards and
activities planned in the area. The following survey frequencies are suggested and should be modified as necessary
to ensure area hazards are adequately characterized, based upon facility-specific experience:
Daily, in office space lo cated in radiological buffer areas and other areas surrounding radiological areas where
the potential exists for external radiation exposure
Weekly, in routinely occupied radiological buffer areas and radiation areas
Weekly, for operating HEPA -filtered ventilation units
Weekly, for temporary radiation area boundaries to ensure that radiation areas do not extend beyond posted
Monthly, or upon entry, if entries are less frequent than monthly, for radioactive material areas
Monthly, for potentially contaminated ducts, piping, and hoses in use outside radiological facilities.
Radiation monitoring should include dose rate measurements of the general area, dose rates at a distance of 30
centimeters from a source or surface of interest to evaluate potential whole body exposures, and dose rates on
contact with potential sources of radiation where there is a potential for hands-on work or other direct contact.
Monitoring should be conducted whenever operations are being performed that might result in individuals being
exposed to small intense beams of radiation, such as those generated by shielded X-ray devices or due to removal
or alteration of shielding, modification of shielding penetrations, or relocation of significant radiation s ources within