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Source Leak Testing Requirements and Exemptions Guidelines

This document outlines the testing requirements for sources containing licensed material, specifically focusing on periodic leakage testing. It details the conditions under which sources must be tested, including those with half-lives greater than 30 days and the necessary detection capabilities. Exemptions from testing are provided for certain activity levels of alpha, beta, and gamma emitters. The document also addresses the frequency of testing for various sources, emphasizing the role of principal investigators and user training in ensuring safety and compliance.

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Source Leak Testing Requirements and Exemptions Guidelines

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  1. Source Leak Testing ACADs (08-006) Covered Keywords Source testing requirements, exemptions from testing. Description Supporting Material

  2. Source Leak Testing • Periodic leakage testing : • source containing licensed material (other than tritium) with a half-life greater than 30 days • Solid, liquids • The test shall be capable of detecting 0.005 uCi. • Sources are exempt from testing if • they contain <10 uCi of an alpha emitting material or • <100 uCi of a beta or gamma emitting radionuclide.

  3. Source Leak Testing • Stored and not used sources must be tested once every 10 year • Exception: alpha sources • Alpha Sources must be tested every quarter • Stored source • Not used for six month • Must be removed from its functional position and secured • Tested before returned to service

  4. Source Leak Testing • sealed beta or gamma sources • leak tested every six months • sealed alpha sources must be leak tested every three months. • Principal investigators must have approvals and posses and use sealed rad sources • Users must have training • Sources must be labeled • Security must be in place

  5. Source Leak Testing Exemptions from testing requirements (NRC: 10 CFR 39.35). • Hydrogen-3 (tritium) sources; • Sources containing licensed material with a half-life of 30 days or less; • Sealed sources containing licensed material in gaseous form; • Sources of beta- or gamma-emitting radioactive material with an activity of 3.7 MBq [100 microcuries] or less; and • Sources of alpha- or neutron-emitting radioactive material with an activity of 0.37 MBq [10 microcuries] or less.

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