Hazardous Liquid Integrity Management Enforcement Guidance Sections 195.450 and 452 [open pdf - 2MB]
"The materials contained in this document consist of guidance, techniques, procedures and other information for internal use by the PHMSA [Pipeline and Hazardous Materials Safety Administration] pipeline safety enforcement staff. This guidance document describes the practices used by PHMSA pipeline safety investigators and other enforcement personnel in undertaking their compliance, inspection, and enforcement activities. This document is U.S. Government property and is to be used in conjunction with official duties. […] Decisions about specific investigations and enforcement cases are made according to the specific facts and circumstances at hand. Investigations and compliance determinations often require careful legal and technical analysis of complicated issues. Although this guidance document serves as a reference for the staff responsible for investigations and enforcement, no set of procedures or policies can replace the need for active and ongoing consultation with supervisors, colleagues, and the Office of Chief Counsel in enforcement matters. Comments and suggestions for future changes and additions to this guidance document are invited and should be forwarded to your supervisor. The materials in this guidance document may be modified or revoked without prior notice by PHMSA management."
Pipeline and Hazardous Materials Safety Amdinistration: http://phmsa.dot.gov/