A nuclear density gauge is a tool in civil construction and other industries that uses a radiation source to measure the density and inner structure of the test material. A nuclear density gauge, which is considered a radiation generating device (RGD), was brought onto the Hanford site prior to notifying the Radiological Control (RadCon) Organization. Failure to notify RadCon in advance (minimum 24 hour notice), violated a DOE requirement, and prevented RadCon from validating the Subcontractor's license to transport and operate the RGD before being brought onto the site. After the Subcontractor arrived onsite, the license was checked and found to have been lapsed.
Lesson Learned: Work activities considered to be non-radiological may use equipment with a radiological source imposing additional radiological control requirements. Understanding the means and methods specific to the scope of work leads to effective planning and reviews by SMEs to include applicable requirements in work documents.
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