(IDAHO FALLS) – A nearly two-month investigation has revealed that an INL accident that exposed 16 workers to radioactive contamination could have been prevented. The report, recently released by the U.S. Department of Energy’s Office of Health, Safety, and Security, cited a failure to follow standard policies and procedures. The report also pointed out an incorrect analysis of a plutonium hazard as a root cause of the accident. INL officials are taking full responsibility for the Nov. 8. incident. Those exposed have returned to work, but are still being monitored.