Dear Licensee,

The U.S. Nuclear Regulatory Commission (NRC) has issued this Information Notice 2010-24, "Notice Of Possible Source Leakage During Non-Routine Maintenance on Gammacell 40 Irradiator," dated November 19, 2010 (ML102800027) to alert addressees of a contamination event that occurred during a non-routine maintenance operation on a Gammacell 40 blood irradiator. It is expected that recipients will review the information for applicability to their facilities and consider actions, as appropriate, to avoid similar incidents. The suggestions contained in this IN are not new requirements; therefore, no specific action, or written response is required.

This document has also been posted on the NRC Homepage at www.nrc.gov/reading-rm/doc-collections/gen-comm/info-notices/2010/. If you have any questions, please contact our office at (217) 785-9947.