Premkumar Thodi
St. John's University
Erosion corrosionBayesian probabilityOperational riskEngineeringPipeline (computing)Probability distributionRedundancy (engineering)Submarine pipelineReliability (computer networking)Pipeline transportInterval (mathematics)Prior probabilityMarine engineeringReliability engineeringBayes' theoremLaplace's methodPreventive maintenanceCondition monitoringFalse alarmIntegrity managementSubseaCorrosion fatigueDistribution systemLeak detectionComputer securityEnvironmental scienceComputer scienceProcess (engineering)Pipeline (software)Reliability (statistics)Probabilistic logicArcticPosterior probabilityProbabilistic methodAsset (computer security)Petroleum engineeringStochastic processStatistical hypothesis testingStatistical powerMarkov chain
Publications 25
#1Suborno DebnathH-Index: 1
#2Ismail Muftah Ali (MUN: Memorial University of Newfoundland)H-Index: 1
Last. Premkumar Thodi (St. John's University)H-Index: 8
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Municipal water distribution systems in Canada and other countries include a large number of cast iron pipes that were installed almost 50 years ago. For structural integrity assessment of these pi...
#1Vandad TalimiH-Index: 1
#1Vandad Talimi (St. John's University)H-Index: 2
Last. Jonathon BruceH-Index: 1
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Recovering heavy oil spilled in a harsh environment is challenging especially when dealing with cold marine environments, where sea ice or high sea states are present. The current technology is based on removing oil from the water surface, meanwhile a significant amount of oil particles could remain in the water column due to turbulent ocean conditions and the density of heavy oil. Therefore, in order to enhance the mechanical recovery of heavy oil, capturing oil particles dispersed in the water...
#1Hieu Chi Phan (MUN: Memorial University of Newfoundland)H-Index: 5
#1Hieu Chi Phan (MUN: Memorial University of Newfoundland)H-Index: 3
Last. Rehan Sadiq (UBC: University of British Columbia)H-Index: 63
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Unexpected pipe breaks in municipal water distribution systems may cause isolation of parts of the network or reduction of redundancy, leading to reduced system reliability. While a network with less redundancy implies less tolerance to further breaks, the isolation of nodes explicitly indicates unavailability of the system to service the nodes. This paper presents a method of measuring these topological changes using algebraic connectivity ( AC ). AC is a parameter that can be used to assess ro...
3 CitationsSource
#1Hanwen Liu (MUN: Memorial University of Newfoundland)H-Index: 2
#2Faisal Khan (MUN: Memorial University of Newfoundland)H-Index: 84
Last. Premkumar Thodi (MUN: Memorial University of Newfoundland)H-Index: 8
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Abstract Failure of pipeline is often caused by corrosion. It affects the health, safety, environment and economy considerably. To prevent pipeline failure, it is necessary to focus on the corrosion and pressure of the structures. Burst pressure is a key factor to assess the integrity of a pipeline. There are three means to determine burst pressure. These are lab testing, evaluation criteria and the Finite Element Method (FEM) modeling. However, the results of the burst pressure assessment using...
10 CitationsSource
#1Alireda Aljaroudi (St. John's University)H-Index: 3
#2Premkumar Thodi (St. John's University)H-Index: 8
Last. Mike Paulin (St. John's University)H-Index: 3
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1 CitationsSource
#1Yongsheng Yang (St. John's University)H-Index: 1
#2Faisal Khan (St. John's University)H-Index: 84
Last. Rouzbeh Abbassi (St. John's University)H-Index: 29
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Pipeline corrosion is one of the main causes of subsea pipeline failure. It is necessary to monitor and analyze pipeline condition to effectively predict likely failure. This paper presents an approach to analyze the observed abnormal events to assess the condition of subsea pipelines. First, it focuses on establishing a systematic corrosion failure model by Bow-Tie (BT) analysis, and subsequently the BT model is mapped into a Bayesian Network (BN) model. The BN model facilitates the modelling o...
62 CitationsSource
#1Faisal Khan (St. John's University)H-Index: 84
#2Premkumar Thodi (St. John's University)H-Index: 8
Last. Rouzbeh Abbassi (Australian Maritime College)H-Index: 29
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Process system integrity is defined as the ability of the system to safely resist the subjected load and perform as desired. Early 2000, risk-based asset integrity management was proposed, which is currently practiced. In risk-based integrity management, system integrity is intermittently assessed and maintained throughout the design life. The recommended integrity inspection and maintenance interval are determined considering vulnerability of the system and resource availability. It may vary fr...
8 CitationsSource
#1Premkumar Thodi (MUN: Memorial University of Newfoundland)H-Index: 8
#2Faisal Khan (MUN: Memorial University of Newfoundland)H-Index: 84
Last. Syed Imtiaz (MUN: Memorial University of Newfoundland)H-Index: 15
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2 CitationsSource
#1Muhammad Masum Jujuly (MUN: Memorial University of Newfoundland)H-Index: 2
#2Premkumar Thodi (MUN: Memorial University of Newfoundland)H-Index: 8
Last. Faisal Khan (MUN: Memorial University of Newfoundland)H-Index: 84
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4 CitationsSource
#1Alireda Ahmed Aljaroudi (MUN: Memorial University of Newfoundland)H-Index: 1
#2Faisal Khan (MUN: Memorial University of Newfoundland)H-Index: 84
Last. Premkumar ThodiH-Index: 8
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F AILURE OF LEAK DETECTION SYSTEM to detect hydrocarbon releases from an offshore pipeline can have devastating effects on operation and environment. Moreover, the failure consequences may bring about excessive financial losses and could threaten the survivability of the operating company in the market. This paper provides a risk-based assessment methodology to assess the reliability and the level of risk for offshore pipelines and their leak detection systems. The assessment outcome is compared...
2 Citations