The U.S. Nuclear Regulatory Commission (NRC) has denied two petitions for rulemaking (PRM-50-93 and PRM-50-95) submitted by Mark Edward Leyse. The petitions requested changes to regulations on emergency core cooling systems, arguing that current rules are not conservative enough based on experimental data. However, the NRC found existing regulations already provide sufficient protection for public health and safety and determined that the petitioner did not present enough new information to justify the requested changes. The denial concludes that amendments to the regulations are not necessary.
Simple Explanation
The U.S. Nuclear Regulatory Commission (NRC) was asked to change some safety rules for nuclear reactors to make them safer, but they decided not to because they believe the current rules are already safe enough. The person asking for the change didn't show new enough information to convince them otherwise.