July 22, 1013
Issued to Lawrence Livermore National Security, LLC related to Programmatic Deficiencies in the Software Quality Assurance Program at the Lawrence Livermore National Laboratory
The Office of Health, Safety and Security's Office of Enforcement and Oversight has evaluated the facts and circumstances surrounding programmatic deficiencies identified in the Lawrence Livermore National Security, LLC (LLNS) software quality assurance (SQA) program.
Defense Nuclear Facilities Safety Board (DNFSB) issued a letter to the National Nuclear Security Administration (NNSA) documenting the DNFSB' s review of the design, functionality, and maintenance of selected safety systems at Lawrence Livermore National Laboratory (LLNL). This review identified, in part, that the "site-wide evacuation voice/alarm (EV A) system clearly meets requirements for consideration of SQA for its life safety function in all other facilities at the laboratory, but has neither been screened for nor undergone SQA review." In addition, the DNFSB noted that, although the Hydrogen Gas Control System (HGCS) programmable logic controller (PLC) "is safety-significant and the embedded software has been through SQA, the system's documentation is not clear regarding the safety classification of the PLC or whether the embedded software on the PLC has been through SQA."