Managing and Addressing Fitness for Service of Vintage Pipelines

Author(s):  
Steven V. Nanney ◽  
Kenneth Y. Lee

Recent pipeline accidents in the United States have highlighted concerns with older vintage natural gas and hazardous liquid pipelines. The United States Department of Transportation (USDOT) Pipeline and Hazardous Materials Safety Administration (PHMSA) is performing a comprehensive review to determine the fitness for service of vintage pipelines, and if the risks associated with vintage pipelines can be better managed by changes to US pipeline safety standards and regulations. Concerns with vintage pipelines include weld seam manufacturing issues, such as low frequency electric resistance welding (LF-ERW) and submerged arc welding (SAW), cast iron pipe, plastic pipe and certain coatings. This paper presents findings from vintage pipeline failure investigations, recent PHMSA actions, and some approaches to address key vintage pipe concerns. These approaches include knowledge assurance (adequacy and quality of historical data), methods to systematically obtain missing data, and processes and criteria for determining fitness-for-service, including assessment, remediation, and replacement programs.

Author(s):  
Kenneth Y. Lee ◽  
M. “Buddy” Secor

The United States Department of Transportation (USDOT), Pipeline and Hazardous Materials Safety Administration (PHMSA), Office of Pipeline Safety recognizes there may be technologies and advancements not currently allowed by the federal regulations that can improve safety, and has processes to allow such technologies and advancements. These processes include Special Permits, State Waivers, and Other Technology Notifications. This paper describes observations and trends related to PHMSA’s accumulated data from the last few decades, and includes a summary of new technologies and innovative solutions that are not currently covered in codified standards or regulations.1


2017 ◽  
Vol 80 (3) ◽  
pp. 431-442 ◽  
Author(s):  
Xiao-Na Pang ◽  
Zhao-Jie Li ◽  
Jing-Yu Chen ◽  
Li-Juan Gao ◽  
Bei-Zhong Han

ABSTRACT Standards and regulations related to spirit drinks have been established by different countries and international organizations to ensure the safety and quality of spirits. Here, we introduce the principles of food safety and quality standards for alcoholic beverages and then compare the key indicators used in the distinct standards of the Codex Alimentarius Commission, the European Union, the People's Republic of China, the United States, Canada, and Australia. We also discuss in detail the “maximum level” of the following main contaminants of spirit drinks: methanol, higher alcohols, ethyl carbamate, hydrocyanic acid, heavy metals, mycotoxins, phthalates, and aldehydes. Furthermore, the control measures used for potential hazards are introduced. Harmonization of the current requirements based on comprehensive scope analysis and the risk assessment approach will enhance both the trade and quality of distilled spirits. This review article provides valuable information that will enable producers, traders, governments, and researchers to increase their knowledge of spirit drink safety requirements, control measures, and research trends.


Author(s):  
Jenny Jing Chen ◽  
Dan Williams ◽  
Keith Leewis ◽  
Michael Barnum

Since the 1970s, the United States Department of Transportation (USDOT) Pipeline and Hazardous Materials Safety Administration (PHMSA) has collected and published pipeline failure incident data. Operators are required to report pipeline incidents and provide the apparent cause of failures. PHMSA and ASME (B31.8S for gas and B31.4 for liquids) identify and group these failures into nine broad categories and sub-classify them into three clusters by their time-based behavior. Technical advancements in pipe manufacturing, fabrication, construction, operation, inspection, monitoring, maintenance, rehabilitation and regulation have resulted in a decrease in incidents for many of these failure causes. This paper presents a statistical trending analysis of the failure incidents for each of the nine threats. The multi-year trending of these incident metrics over the last 40+ years will be demonstrated.


Author(s):  
Jenny Jing Chen ◽  
Dan Williams ◽  
Keith Leewis ◽  
David Aguiar

Systemic manufacturing defects in select vintage pipe pose challenges when assessing the integrity of pipeline systems comprised of such pipe. The common manufacturing technology and quality control practices in place at the time of manufacturing left some vintage line pipe prone to imperfections which could remain even after passing pressure tests in the mill or after construction. The lack of complete and reliable manufacturing records for some vintage line pipe limits granularity and adds integrity assessment uncertainties. Up until 1984, the United States Department of Transportation (USDOT) Pipeline and Hazardous Materials Safety Administration (PHMSA) required operators to report incidents related to failed pressure tests for all pipelines at the time of installation. Performance with respect to the manufacturer and year of manufacture can therefore be extracted from these reported incidents. These performance records are essential when re-establishing the MAOP (or MOP) and confirming the fitness for service of older pipelines. The pressure test failure performance in the early incident records provides insight into pipeline integrity prioritization and mitigation activities for managing pipeline safety based on pipe manufacturer, production date and seam type.


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