Materials Performance Supplements

Corrosion Management for Pipeline Integrity 2018

Materials Performance is the world's most widely circulated magazine dedicated to corrosion prevention and control. MP provides information about the latest corrosion control technologies and practical applications for every industry and environment.

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5 CORROSION MANAGEMENT FOR PIPELINE INTEGRIT Y SUPPLEMENT TO MP MATERIALS PERFORMANCE JUNE 2018 The GAO does not have the power to directly require PHMSA to take actions. Rather, the GAO can request that the U.S. Secretary of Transportation order PHMSA to take its recommended actions. As a result, based on the study, the GAO made two primary recommendations for execu- tive action. The first is for PHMSA to document the decisions and underlying assumptions of RRIM, including what data and information were analyzed as part of determining each component of the model. This includes the threat factors, weights, ri sk tiers, and inspection frequency. In September 2017, DOT reported that it concurs with that rec- ommendation and has begun a systematic reexamination and validation of RRIM's variables and assumptions. "PHMSA will, among other actions, doc- ument the basis for the selection factors, using literature reviews and subject matter experts, and update its regression and fre- quency analyses to establish weights for each factor," the GAO writes. The DOT plans to complete these tasks by November 2018. Th e second recomm endation i s for PHMSA to establish and implement a pro- cess using data to periodically review and assess the effectiveness of the model in pri- Public concerns about a given pipeline, such as the Dakota Access Pipeline shown here, can be considered by PHMSA in its inspection priority matrix. Wikimedia Commons photo. oritizing pipelines for inspection and to document the results of these analyses. In September 2017, DOT reported that it has begun to develop that process, with proce- dures including defining performance met- rics for effectiveness; assessing the ade- quacy of data to develop m etrics; and choosing appropriate analytical methods to measure the effectiveness of RRIM by these metrics. PHMSA says it plans to implement this new annual review process by Decem- ber 31, 2018. Source: U.S. Government Accountability Office, www.gao.gov. References 1 Government Accountability Office, "Pipeline Safety : Additional Actions Could Improve Fed- eral Use of Data on Pipeline Materials and Cor- rosion," Report to Congressional Committees, GAO-17-639, August 2017, https://www.gao.gov/ assets/690/686390.pdf (April 25, 2018). 2 "By-Decade Inventory," Pipeline Replacement Updates, U.S. Department of Transportation, h t t p s : / / o p s w e b . p h m s a . d o t . g o v / p i p e l i n e _ replacement/by_decade_installation.asp (April 25, 2018). 3 K.R . Larsen, "Protecting a Pipeline When Its Coating Has Aged." MP, March 1, 2017, http:// w w w. m a t e r i a l s p e r f o r m a n c e . c o m / a r t i c l e s / coating-linings/2017/03/protecting-a-pipeline- when-its-coating-has-aged (April 25, 2018). We have high standards, shouldn't you? NACE standards are responsive to changing technology, effi cient, and give your company or career a competitive edge. • Purchase products that perform • Streamline processes and avoid errors • Trim costs and boost your bottom line • Comply with company and government regulations Learn how your company can benefi t from NACE standards today. For information, visit www. nace.org/ standards

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