This advance notice of proposed rulemaking invites comments on a recommendation by the National Transportation Safety Board (NTSB) to locate longitudinal weld seams in the upper half of the pipe as a means to reduce the potential for pipeline failures caused by corrosion in the longitudinal weld seams. Comments are solicited concerning the application of this recommendation to gas pipelines subject to Part 192 as well as interstate and intrastate pipeline facilities transporting hazardous liquids, as those terms are defined by the Hazardous Liquid Pipeline Safety Act of 1979.