... inspection due date. A case study illustrates the implementation of the approach for the analysis of multiphase flowlines in the Gulf of Mexico. internal corrosion corrosion modeling corrosion inhibition direct assessment subsea pipeline local area inspection pipeline integrity INTRODUCTION...

... into service leading to potentially severe internal corrosion risk due to residual water and associated corrosion factors such as oxygen, salts, solids and microbes. Such risk can be reduced by conducting a batch chemical treatment with corrosion inhibitors and biocide. There are several key challenges...

... polarization resistance and electrochemical impedance spectroscopy even when a conductive aqueous phase is intermittent or unavailable. We now present field-test performance data of our MBES operated inside a multiphase liquid water and natural gas flow facility. The MBES measured internal corrosion...

...Abstract This paper explores optimized approaches used to assess the internal corrosion condition of several crude oil pipeline segments with the support of a robust internal corrosion predictive model (ICPM). Proven ICPMs can predict internal corrosion wall loss within ±10% of the actual wall...

...ABSTRACT The paper presents an extensive case study on the application of NACE International, Internal Corrosion Direct Assessment (ICDA) Standard Practices for 22 oil & gas production and transport pipelines owned by two pipeline operators in India. The objective of the paper is to discuss...

...Abstract Lining the floor bottoms and vapor space within an Aboveground Storage Tanks (AST) is a well-proven method to mitigate internal corrosion of the carbon steel substrate. An AST is usually scheduled for out-of-service inspection at least 10 years after its initial in-service date; sometimes...

... the years, this describes the procedures and results of the most recent evaluations after 60 years of service. iron pipe ductile iron pipe polyethylene encasement cement-mortar lining internal corrosion external corrosion water pipeline case study INTRODUCTION OBSERVATIONS In cast and ductile iron...

...Abstract This paper provides a statistical analysis of onshore hazardous liquid pipeline accidents in the United States from January 2010 to April 2020 by evaluating releases reported to be caused by internal corrosion. The U.S. Department of Transportation’s Pipeline and Hazardous Materials...

... that multiple approaches have value for assessing MIC potential in pipeline sludges. internal corrosion microbiologically influenced corrosion (MIC) molecular microbiological methods biocide biodispersant transmission pipeline under-deposit corrosion (UDC) sludge INTRODUCTION Under-deposit corrosion...

...Another salient improvement is the ease in the confirmation of internal corrosion mechanisms when ILI and DA are used together to assess the integrity of pipelines. For pipelines that are easy to pig, most operators normally rely on ILI to detect internal and external corrosion defects. In internal...

... of service in order to coat any internal components, which may or may not be possible. CP could be used to help mitigate internal corrosion in combination with or without any of the other options mentioned above. There are two general types of CP systems, a sacrificial anode CP (SACP) system and an impressed...

... inhibitors were injected in both the water streams (treated seawater and effluent waters) to control the internal corrosion. Corrosion coupons are installed in these water streams to monitor the internal corrosion and to evaluate the chemical injection efficiency. Internal Corrosion Seawater injection...

... exchangers internal corrosion chlorinated seawater INTRODUCTION Seawater is used as coolant for many industrial applications in the oil and gas, chemical as well as other industries such as marine and offshore industry. Chlorination is often used to prevent biofouling and to provide an optimized cooling...

...Abstract The severity of internal corrosion from the presence of high concentrations of acid gases (H₂S and CO₂) and elemental sulfur poses long-term integrity challenges that make carbon steel the unlikely material of construction. This paper presents a 30-plus-year history...

...ULTRASONIC THICKNESS DATA COLLECTION API 579-2016 “Fitness-For-Service” Parts 4 and 5 have identified procedures to evaluate internal corrosion profiles from metal wall loss through UT inspections. These methods utilize the collected UT data from point thickness measurements to evaluate...

... will substantiate presented arguments using comprehensive case studies discussing susceptible factors of various threats, practical experience and lessons learnt. Pipeline Integrity Internal Corrosion External Corrosion Stress Corrosion Cracking Inline Inspection ACVG DCVG ACCA Cathodic Protection Indirect...

...Abstract Equipments and pipelines inspection and monitoring are important activities for safe working conditions in the oil and gas industry. Conventional techniques to manage the internal corrosion have high accuracy, but they require considerable time to consolidate results and high operational...

... wall loss due to internal corrosion. Corrosion was noted to be particularly severe in the lower sections of some tanks where sludge layers were believed to have formed. Previous attempts to monitor for corrosion using mass loss coupons and acoustic emission were found to provide less than adequate...

... systems or processes are involved. Internal corrosion in a natural gas storage pool is one such case, with internal corrosion susceptibility depending on interactions among a variety of fluid composition, flow, and material parameters. Bayesian network (BN) modeling was explored as a solution...

... close to 0.12 V dec⁻¹, ^{24 , 25} which fits better in a one-electron mechanism. ²⁶ Abstract Internal corrosion can occur in the natural gas transmission pipelines when aqueous electrolytes are present. The presence of water results from the condensation of wet gas...