Regulations, Licensing and Recordkeeping
Framework
Radiography is regulated by the NRC or an Agreement State under 10 CFR 34 (radiographic operations), 10 CFR 20 (dose limits and postings) and 10 CFR 30 (possession), with transport governed by DOT rules in 49 CFR. A license (or registration) is required to possess and use sources; the license names the radiation safety officer and defines authorized devices, users and locations. Radiographers and assistants must be trained and certified; programs typically require formal radiation safety training plus documented on-the-job training, and a radiographer's assistant works under a certified radiographer. Verify specific hour requirements against your license condition and current rule text.
Records and recurring tasks
Leak (wipe) tests at intervals not exceeding 6 months, with removal from service if removable contamination exceeds 0.005 microcurie (185 Bq). Daily inspection of the device, drive cable and guide tube before use. Utilization logs recording date, time, location, device serial number, source activity and radiographer. Personnel dosimetry records, instrument calibration records, and survey records retained for the periods the rule specifies.
Traps
Using a 12-month leak-test interval when radiography requires 6 months. Confusing the 0.005 microcurie limit with larger values. Assuming every state mirrors NRC wording exactly. Choosing a DOT label from activity rather than from surface dose rate and transport index.
Worked example
A wipe test reads 0.004 microcurie (148 Bq): below the 185 Bq limit, so the source may remain in service and the result is recorded. A reading of 0.008 microcurie (296 Bq) is above the limit: stop use, isolate the device, notify the RSO and follow the license and regulatory reporting requirements.