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PHMSA Collection

rosaP Repository & Open Science Access Portal

This collection includes the final project reports from the Pipeline and Hazardous Material Safety Administration (PHMSA) Office of Pipeline Safety (OPS) research program. The PHMSA pipeline research mission is to sponsor research and development projects focused on providing near-term solutions for the Nation’s pipeline transportation system that will improve safety, reduce environmental impact, and enhance reliability. Additional information on the program may be found here: https://www.phmsa.dot.gov/research-and-development/pipeline/about-pipeline-research-development Bookmark this collection: https://rosap.ntl.bts.gov/collection_phmsa or https://doi.org/10.21949/1530847.

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Showing 1 - 20 of 148 results
  • Separation Distance of Hazardous Materials Cars and Train Crews andor Locomotives Literature Review Buffer Car Research Study
    Separation Distance of Hazardous Materials Cars and Train Crews and/or Locomotives - Literature Review (Buffer Car Research Study)
    Sullivan, Laura ;
    Raney, Mark
    2022-07-01 | PDF
    Train makeup and switching operations are governed by car placement regulations, which establish effective separation distance requirements by means of “buffer cars”. The separation distance requirements in the U.S. were established in 1922 and have remained largely unchanged, despite dramatic changes in rail operations, rail equipment, and the var ...
  • Form Factor and Chemistry Agnostic Battery Deactivation Using Electrically Conductive Gel for Safe Transportation
    Form Factor and Chemistry Agnostic Battery Deactivation Using Electrically Conductive Gel for Safe Transportation
    Waller, Gordon Henry ;
    Jacob, Connor
    2025-05-16 | PDF
    Removing residual energy from end-of-life batteries prior to transportation re-quires some method of deactivation. While many methods have been proposed, very few have been implemented due to limitations of cost, safety, and efficacy. In this work, multiple cell and battery types (e.g., lithium-polymer pouch cells, 18,650 lithium-ion cell, alkaline ...
  • Cost of Delay from HAZMAT Rail Incidents Final Report
    Cost of Delay from HAZMAT Rail Incidents: Final Report
    Taylor, Catherine ;
    Baker, Gary
    2023-08-25 | PDF
    This report presents the results of research estimating the social cost of delay resulting from hazardous material in rail incidents. The analysis estimates the delay experienced by freight and passenger rail, and roadway users due to track closures resulting from rail incidents due to the presence of hazardous materials. Delay occurs due to trains ...
  • UN Series 6 a Single Package Test LargeScale Mix ID 5
    UN Series 6 (a) Single Package Test: Large-Scale Mix ID #5
    Safety Management Services, Inc. (SMS)
    2021-12-01 | Thermites | WMV
    Task 4: UN Series 6 testing of non-exploding, large-scale thermites, large-scale mix ID #5. For many years, the properties of thermites have perplexed test laboratories and regulators; one thermite manufacturer published on their website that they had provided a sample of their thermite to a well-known and respected international test laboratory th ...
  • Development of HeatAffected Zone Hardness Limits for InService Welding
    Development of Heat-Affected Zone Hardness Limits for In-Service Welding
    Bruce, William A. ;
    Etheridge, Bradley C.
    2009-09-29 | PDF
    Welding onto in-service pipelines is frequently required to facilitate a repair or to install a branch connection using the "hot tapping" technique. Welds made in-service cool at an accelerated rate as the result of the ability of the flowing contents to remove heat from the pipe wall. These welds, therefore, are likely to have hard heat-affected z ...
  • Dent Fatigue Life Assessment Development of Tools for Assessing the Severity and Life of Dent Features
    Dent Fatigue Life Assessment: Development of Tools for Assessing the Severity and Life of Dent Features
    Semiga, Vlad
    2012-01-10 | PDF
    Federal regulatory standards require repair of dents with depths exceeding 6% of the pipeline diameter and for dents exhibiting signs of mechanical damage interacting with secondary features. However, leaks have been known to occur at dents with depths less than 3% of the pipe diameter and dents interacting with secondary features have been known t ...
    Supporting Files
  • Effect of Ethanol Blends and Batching Operations on SCC of Carbon Steel
    Effect of Ethanol Blends and Batching Operations on SCC of Carbon Steel
    Sridhar, Narasi
    2011-02-08 | PDF
    This is the draft final report of the project on blending and batching (WP#325) of the Consolidated Program on Development of Guidelines for Safe and Reliable Pipeline Transportation of Ethanol Blends. The other two aspects of the consolidated program, ethanol source effects (WP#323) and monitoring (WP#327) are reported separately. Pipeline compani ...
  • HighResolution Small Diameter EMAT Crack ILI Tool for Difficult To Inspect Piping
    High-Resolution Small Diameter EMAT Crack ILI Tool for Difficult To Inspect Piping
    Bondurant, P ;
    Hay, K
    2020-06-15 | PDF
    The objective of this project is to build and test an Electro-Magnetic Acoustic Transducer (EMAT) sensor prototype to detect and quantify wall loss and longitudinal cracks in metallic pipes. The sensor will be used to assess small-diameter and unpiggable pipes containing fittings and other restricting features. The initial target pipe diameter is 8 ...
  • Risk Assessment and Treatment of Wells
    Risk Assessment and Treatment of Wells
    Stephens, Mark ;
    Koduru, Smitha
    2020-09-01 | PDF
    This project will develop guidelines to perform relative, probabilistic and Quantitative Risk Assessments (QRAs) of storage wells during well entry. The project team will build on its extensive expertise of the QRA methodologies used in the pipeline and gas storage industries to review the relevant standards, including API RP 1170/1171 2015, CSA Z3 ...
  • Cost Benefit Analysis of Deploying or Retrofitting Externalbased Leak Detection Sensors
    Cost Benefit Analysis of Deploying or Retrofitting External-based Leak Detection Sensors
    Bussiere, Mathew
    2020-11-01 | PDF
    This project will deliver new knowledge in the form of a document outlining a methodology for performing cost-benefit analysis on external leak detection systems intended for use on hazardous liquid and natural gas transmission pipelines. The methodology will enable decision makers to objectively weigh the safety and environmental protection benefi ...
  • Optimized Diagnosis and Prognosis for Impingement Failure of PA and PE Piping Materials
    Optimized Diagnosis and Prognosis for Impingement Failure of PA and PE Piping Materials
    Deng, Yiming ;
    Liu, Yongming
    2016-08-10 | PDF
    Pipeline infrastructure and its safety is critical for the recovering of U.S. economy and our standard of living. Statistics from U.S. Department of Transportation (DOT) and Gas Technology Institute (GTI) show the decline in use of steel and cast iron piping materials is significant in recent years and the increase in pipeline system size is largel ...
  • Characterization of Stress Corrosion Cracking Using Laser Ultrasonics Final Report
    Characterization of Stress Corrosion Cracking Using Laser Ultrasonics [Final Report]
    Klein, Marvin
    2008-08-31 | PDF
    This paper focuses on the application of laser ultrasonics to the characterization of stress corrosion cracking (SCC). SCC is the phenomenon in metals wherein the simultaneous presence of tensile stress, a corrosive environment and a susceptible metallurgy leads to the nucleation and propagation of highly irregular and complex cracks, usually found ...
  • Digital Mapping of Buried Pipelines With a Dual Array System 2005 Final Report
    Digital Mapping of Buried Pipelines With a Dual Array System : 2005 Final Report
    Witten Technologies, Inc.
    2005-03-01 | PDF
    The project carried out under this agreement, which was informally called the "Dual Array Project" (the term we will use in this report), was part of the research efforts at the Office of Pipeline Safety at U.S. DOT, and was one of seven contracts awarded by competitive proposals in October 2002 in the area of damage prevention and leak detection ( ...
  • UN Series 6 a Single Package Test LargeScale Mix ID 1
    UN Series 6 (a) Single Package Test: Large-Scale Mix ID #1
    Safety Management Services, Inc. (SMS)
    2021-12-01 | Thermites | WMV
    Task 4: UN Series 6 testing of non-exploding, large-scale thermites, large-scale mix ID #1. For many years, the properties of thermites have perplexed test laboratories and regulators; one thermite manufacturer published on their website that they had provided a sample of their thermite to a well-known and respected international test laboratory th ...
  • GPSBased Excavation Encroachment Notification
    GPS-Based Excavation Encroachment Notification
    Farag, Alicia
    2011-10-31 | PDF
    Excavation damage is the primary threat to the integrity of the natural gas distribution system. According to the Common Ground Alliance, the two primary root causes of excavation damage are failure to notify the one-call center and careless excavation near utility lines. The objective of this project was to develop and demonstrate a GPS-based syst ...
  • CAAP Embedded Passive RF Tags Towards Intrinsically Locatable Buried Plastic Material
    CAAP: Embedded Passive RF Tags Towards Intrinsically Locatable Buried Plastic Material
    Mondal, Saikat ;
    Kumar, Deepak
    2019-01-30 | PDF
    Accurate and reliable locating, identifying and characterizing the buried plastic pipes from the ground surface in reducing the likelihood of hit them is critical and imperative to reduce the pipeline incidents. In this collaborative research, a new harmonic radar (frequency doubling) mechanism for smart RF tags design that can detect plastic pipes ...
  • Alternate Welding Processes for InService Welding
    Alternate Welding Processes for In-Service Welding
    Begg, Darren
    2009-04-24 | PDF
    The primary objective of this project is to define parameters and conditions associated with each advanced welding process that can preclude hydrogen cracking and burn-through in a reproducible manner. A significant, process dependent, in-service welding concern that can be addressed by modern power sources is the reliable control of heat input and ...
  • Feasibility of Chemical Inhibition of Ethanol SCC
    Feasibility of Chemical Inhibition of Ethanol SCC
    Gui, Feng ;
    Sridhar, Narasi
    2012-03-28 | PDF
    Stress corrosion cracking (SCC) has been observed in carbon steel tanks and piping in contact with fuel grade ethanol (FGE) in user terminals, storage tanks, and loading/unloading racks. Detailed laboratory studies, sponsored by American Petroleum Institute (API), Renewable Fuel Association (RFA), Pipeline Research Council International (PRCI), and ...
  • Dissecting Coating Disbondments
    Dissecting Coating Disbondments
    Brossia, Sean
    2010-11-30 | PDF
    Coatings are the primary means for imparting corrosion protection to gas and liquid pipelines. Though cathodic protection is also often applied, if no coating was present the demand for supplied current to effectively catholically protect the pipe would be cost-prohibitive. Because coatings are the main line of defense, understanding how they disbo ...
  • Development of a Commercial Model to Predict Stress Corrosion Cracking Growth Rates in Operating Pipelines
    Development of a Commercial Model to Predict Stress Corrosion Cracking Growth Rates in Operating Pipelines
    Song, Frank ;
    Lu, Baotong
    2011-06-01 | PDF
    Stress corrosion cracking (SCC) in pipelines occurs under two broad pH conditions— alkaline pH and near-neutral pH. SCC can lead to leaks, sudden bursts, or explosions of gas and liquid pipelines. Crack growth rate (CGR) is a critical parameter to be considered when the inspection interval for in-line inspection (ILI) or pressure test, or the reass ...
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