Advancing nuclear reactor safety (IMAGE) DOE/Sandia National Laboratories Caption Brad Beeny, left, a Sandia National Laboratories nuclear engineer and code developer, and Larry Humphries, the lead code developer for Sandia’s nuclear accident modeling computer code, examine remnants from a series of Lower Head Failure experiments. The results from these experiments, and many others, are used to inform the code. Credit Randy Montoya/Sandia National Laboratories Usage Restrictions Use with credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.