Nuclear explosive lightning vulnerability task force. Final report

This report summarizes the formation, activities, and conclusions of the Nuclear Explosive Lightning Vulnerability Investigation (NELVI) task force. It also presents recommendations for actions which, when implemented, are intended to provide an LLNL nuclear explosive device system whose invulnerability to lightning is designed-in and verifiable. While a number of recommendations are made, the investigation did not reveal any major discrepancies in ground zero or device systems techniques or procedures. These recommendations are based on knowledge and practices used in present day lightning protection designs. 10 references, 17 figures.