Pipeline and Hazardous Materials Safety Administration December 15, 2005 – Federal Register Recent Federal Regulation Documents

Pipeline Safety: Design and Construction Standards To Reduce Internal Corrosion in Gas Transmission Pipelines
Document Number: 05-24063
Type: Proposed Rule
Date: 2005-12-15
Agency: Pipeline and Hazardous Materials Safety Administration, Department of Transportation
This document proposes regulations on the control of internal corrosion when designing and constructing new and replaced gas transmission pipelines. The proposed rule would require an operator to take steps in design and construction to reduce the risk that liquids collecting within the pipeline could result in failures because of internal corrosion. These changes would ease steps an operator must take in operating and maintaining the pipeline to minimize internal corrosion.
Integrity Management: Program Modifications and Clarifications-Request for Comments
Document Number: 05-24061
Type: Proposed Rule
Date: 2005-12-15
Agency: Pipeline and Hazardous Materials Safety Administration, Department of Transportation
PHMSA proposes revisions to the current Pipeline Safety Regulations for Pipeline Integrity Management in High Consequence Areas. The revisions address a petition from the hazardous liquid pipeline industry. The revisions are to: allow more flexibility in reassessment intervals for hazardous liquid pipelines by adding an eight-month window to the five-year time frame for operators to complete reassessment; and require both hazardous liquid pipeline and gas transmission pipeline operators to notify PHMSA whenever they reduce pipeline pressure to make a repair and to provide reasons for pressure reduction. Another notification, including reasons for repair delay, would be required when a pressure reduction exceeds 365 days. Also, PHMSA proposes to correct existing provisions for calculating a pressure reduction when making an immediate repair on a hazardous liquid pipeline. The proposed correction would allow operators to use another acceptable method to calculate reduced operating pressure when a specified formula is not applicable or results in a calculated pressure higher than operating pressure. Finally, PHMSA seeks the submittal of engineering analyses and technical data. These submittals are to provide the basis for modifying the required time periods for remediating certain conditions found during a hazardous liquid pipeline integrity assessment. PHMSA will use this data to evaluate the scope and scale of repair issues to develop an accurate basis for determining if any additional flexibility is needed in the repair schedules.