A federal regulator reassured residents living near the Nuclear Fuel Services plant in Erwin. Michael Weber of the Nuclear Regulatory Commission said steps have been taken to improve safety at the plant. NFS makes nuclear fuel for the Navy. Commission officials and NFS officials attended a public meeting yesterday to discuss the commission’s annual review of the plant. It was recently disclosed that nine gallons of highly enriched uranium leaked in the NFS downblending operation in March a year ago. Regulators said only luck prevented the spill from collecting and exposing workers to a deadly dose of radiation.