Sealed Source Leak Testing:
Step-by-Step Guide to Ensuring Safety and Compliance
Sealed radioactive sources are widely used in industries like healthcare, manufacturing, and energy. To ensure safety and regulatory compliance, regular leak testing is required to confirm that these sources remain intact and do not pose a contamination risk. In this guide, we’ll walk you through the essential steps of performing a sealed source leak test.
Why Leak Testing Matters
Leak testing is crucial for preventing radiation exposure and environmental contamination. Regulatory agencies such as the Nuclear Regulatory Commission (NRC) and state radiation control programs mandate routine leak testing for all sealed sources to verify their integrity.
Step-by-Step Guide to Leak Testing
- Gather Your Equipment To conduct a leak test, you’ll need:
- RSCS’s leak test kit, which includes swabs, alcohol wipe, zip close bag, and leak test number
- Appropriate personal protective equipment (PPE), such as disposable gloves
- Proper dosimetry if available and/or required by your license
- Online leak test documentation form
2. Identify the Source Before testing, record the source details on the leak test form:
- Serial ID number and isotope
- Source activity and manufacture date
- Equipment ID (if applicable)
3. Perform the Wipe Test
- Using a swab from your leak test kit, carefully wipe the area where the sealed source is housed. Pay close attention to:
- Remove the swab from the clear zip close bag, moisten swab with towelette, and thoroughly smear the source, area of the source container that was in intimate contact with the source capsule, or an accessible area adjacent to the source, as appropriate.
- Return the swab to its clear zip close bag without permitting the cotton swab to touch the outside of the bag. Seal the zip close bag.
- Survey the wipe tests with a portable Geiger counter or radiation monitor prior to mailing, if available. If levels are in excess of twice background, call RSCS immediately.
4. Secure Sample and Send for Analysis
- Place the swab in the zip close bag without permitting the swab to touch the outside of the bag and then seal it properly. Record all required information on the online Leak Test Data Sheet.
- Place zip close bag and data sheet form in the numbered, pre-addressed paper envelope and mail to RSCS for analysis.
- Multiple test kits may be placed in a larger envelope for mailing.
5. Interpret the Results The analysis will determine if radioactive material above regulatory limits is present. If the results indicate contamination:
- Immediately remove the sealed source from use
- Notify your radiation safety officer (RSO) or regulatory authority
- Follow proper decontamination and disposal procedures
6. Maintain Records Leak test records must be kept on file for regulatory compliance. Ensure documentation includes:
- Test results and date
- Source details
- Analyst’s report
- Any corrective actions taken (if applicable)
Safety First
Always consult the operator’s manual for the device or other information from the source manufacturer to determine the appropriate location for leak test collection and for any specific radiation safety precautions to take during leak testing.
Leak Testing Training
Regular leak testing is essential for ensuring the safe use of sealed radioactive sources. By following the correct procedures and maintaining compliance, organizations can prevent hazardous exposure and avoid regulatory penalties. If you need training on performing leak tests or interpreting results, consider enrolling in our Radiation Safety Officer (RSO) training program to enhance your knowledge and compliance practices.
Need help with leak testing compliance? Our Radiation Safety Officer training program covers everything you need to know about leak testing, regulatory requirements, and radiation safety best practices. Contact are training team to learn more!