PIPELINE FAILURE RATES-CONCLUSION: Pipeline grouping method improves aggregate data

This concluding part of an article exploring a model for reducing statistical uncertainty when pooling pipeline data applies Part 1’s methodology to actual pipeline-failure data compiled by the US Office of Pipeline Safety (OPS) 1994-2005. It also applies the methodology to estimate the failure rates in multiple onshore pipeline systems in Southern Mexico, for which failure data were gathered 1995-2004.Pipeline reliability analyses struggle between the need to increase the number of km-years from which failure data are gathered in an effort to reduce statistical uncertainty and the need to avoid statistical uncertainties caused by pooling disparate data.Part 1 of this article descri...

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