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Radiation leak testing is a specialized procedure designed to detect any release of radioactive material from sealed sources, devices, or containers A second leak at the plant occurred shortly after the first, releasing plutonium and other radiotoxins causing concern to nearby communities. Even though these sources are designed to be secure, wear and tear, damage, or manufacturing defects can result in leaks over time

Early detection of leaks is critical to prevent contamination, health hazards, and regulatory violations Thirteen of these tested positive for internal radioactive contamination increasing their risk for future cancers or health issues § 39.35 leak testing of sealed sources

(a) testing and recordkeeping requirements

Each licensee who uses a sealed source shall have the source tested for leakage periodically The licensee shall keep a record of leak test results in units of microcuries and retain the record for inspection by the commission for 3 years after the leak test is performed 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.

Thus leakage radiation can be defined as ionising radiation transmitted through the protective shielding of a radiation source other than the primary beam If the leak test reveals the presence of 0.005 uci or more of removable contamination contact the radiation safety office immediately The rso shall immediately inform the state radiation control program office by telephone, withdraw the sealed source use, and place it in locked storage. The lead shielding in the housing and the collimator blades are thick enough to stop most of the radiation, and the very small amount that gets through is the leakage radiation.

Any leakage from a radioactive source (other than of gaseous or volatile radioactive content) will result in deposition of a radioactive film on the surface of the source or adjacent objects

Periodic wipes of these surfaces, when properly analyzed with a sensitive instrument, can ordinarily detect traces of leakage long before significant amounts of radioactive material have been released. The licensee shall check the equipment associated with the leaking source for radioactive contamination and, if contaminated, have it decontaminated or disposed of by an nrc or agreement state licensee that is authorized to perform these functions. Radiation solutions offers convenient radiation leak test sample kits that can be shipped to you to perform the sample collection yourselves Two separate kits are available

One for fixed type nuclear gauges, the other for portable nuclear density/moisture gauges.

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