Nevada Administrative Code
Chapter 459 - Hazardous Materials
RADIATION CONTROL
Licensing of Radioactive Material
Section 459.307 - Testing sealed sources for leakage

1. Any licensee who possesses sealed sources shall have each sealed source containing radioactive material tested for leakage at intervals not to exceed 6 months, unless a longer interval is authorized by the Division, the Nuclear Regulatory Commission or an agreement state in the Sealed Source and Device Registry maintained by the Nuclear Regulatory Commission. In the absence of a certificate from a transferor indicating that a test has been made within 6 months before the transfer, the sealed sources should not be used until tested, but no leak tests are required when:

2. The leak test must be capable of detecting the presence of 0.005 microcurie (185 becquerels) of radioactive material on the test sample. The test sample must be taken from the sealed source or from the surfaces of the device in which the sealed source is permanently mounted or stored on which contamination might be expected to accumulate. Records of leak test results must be maintained for 3 years for inspection by the Division and, for persons licensed pursuant to the provisions of this chapter for the medical use of radioactive material, must include, without limitation:

3. If the leak test reveals the presence of 0.005 microcurie (185 becquerels) or more of removable contamination, or 0.001 microcurie (37 becquerels) of radon 222 in a 24-hour period if the sealed source is a brachytherapy source manufactured to contain radium, the licensee shall immediately inform the Radiological Health Section of the Division by telephone, withdraw the sealed source, or the device in which it is permanently mounted, from use and cause it to be placed in locked storage. A written report must be filed with the Division within 5 days after the test and must include, without limitation: