... standard electrochemical and failure analysis techniques to determine the primary causes and modes of failures. Soil chemistry, Microbiologically Induced Corrosion (MIC), pH and presence of chlorides in the soil will provide evidence for accelerated corrosion if there is deficiency in cathodic protection...

... ABSTRACT External corrosion of tank bottoms is a significant problem for tank owners for both economic and environmental reasons. Corrosion Protection of Above Ground Storage Tanks (AST) is typically provided by an impressed current cathodic protection (ICCP). Two primary impressed current...

... Subsurface Corrosion pipeline integrity data coating anomaly Pipeline Corrosion well integrity Publication Division materials and corrosion Midstream Oil & Gas texas 77084 flowline corrosion riser corrosion cathodic protection permission external corrosion manuscript Houston direct...

... of the structure. This paper describes results of laboratory tests on the effectiveness of cathodic protection to prevent or minimize microbiologically influenced corrosion under controlled seawater conditions. Electrochemical, molecular biology and surface characterization technologies are used for identification...

... Abstract A new method has been developed to allow for cathodic protection of the upper / new tank bottom in a double bottom tank. When two steel tank bottoms are in electrical contact with each other, the lower tank bottom acts as an electrical shield to cathodic protection (CP) current...

... ABSTRACT Temporary coatings in conjunction with cathodic protection (CP) in seawater have been used in this paper for solving the contradiction between big initial current density and small mean current density. The repairing effect of calcareous deposits produced during CP on the coating...

...), and Constant Load Verification (CLV). A new Ni-Cr-Mo-Fe alloy UNS N08830 alloy was recently evaluated for resistance to Hydrogen Induced Stress Cracking (HISC), simulating conditions arising during cathodic protection in a subsea environment. The unique set of test methods and conditions included SSRT...

... Midstream Oil & Gas Publication Division specimen Zinc Houston cathodic protection coating pipe carbon steel pipe sacrificial anode Alternative method to protect welded joints in carbon steel pipes used for water transport Joao Paulo Klausing Gervasio Petrobras S.A. Av. Henrique Valadares...

... will substantiate presented arguments using comprehensive case studies discussing susceptible factors of various threats, practical experience and lessons learnt. INTRODUCTION materials and corrosion cathodic protection texas 77084 flowline corrosion Upstream Oil & Gas likelihood History key...

... it does not significantly alter the proportion of ferrite and austenite. This work evaluated the susceptibility to HISC under cathodic protection of friction stir welded super duplex stainless steel UNS 1 S32760. Microstructure evaluation revealed a recommended proportion of ferrite and austenite phases...

... ABSTRACT This work presents laboratory testing performed to assess the fatigue response of wellhead extension joint welds for high-pressure, deepwater prospects subjected to low-frequency cyclic loading. The wellhead extension joints are exposed to seawater and are cathodically protected...

... a new development in the rock shield market that can improve installation efficiency saving the contractor, and ultimately the owner, both time and money. Additionally, a rock shield must be considered a component of the piping protection system which includes the cathodic protection and coating. The CP...

... ABSTRACT DNVGL-RP-B401 “Cathodic Protection Design” is widely used as a design code for cathodic protection (CP) of permanently installed offshore structures associated with production of oil and gas. 1 CP design parameters in RP B401 are consistently selected using a conservative approach...

... hydrogen Production Chemistry cathodic protection Publication Division permission manuscript Microstructure Houston fracture Effect of the superduplex microstructure on the susceptibility to hydrogen induced stress cracking Florent Krajcarz, Fiona Ruel, Saghi Saedlou Aperam Isbergues Research...

... ABSTRACT Cathodic protection is an effective technique to extend the service life of reinforced concrete structures. Historically, impressed current cathodic protection systems have been used. These systems are effective, especially when they are properly installed and maintained. Galvanic...

... cathodic protection system for all piles included in offshore structure. The installed CP system was operational since August 2011 and was remotely monitored. The monitoring data showed that all the surface-based structures such as capping beams adhered to the requirements of BS EN 12696 with regards...

... ABSTRACT Corrosion protection techniques including impressed current cathodic protection (ICCP), galvanic corrosion protection (GCP) and electrochemical treatments (ECE and Re-Alk) are well known and widely used to protect reinforced concrete structures globally. Each of these techniques have...

... ABSTRACT In natural seawater, many parameters might influence the cathodic protection current demand such as potential, temperature, dissolved oxygen content, biofilm and fouling activity, and calcareous deposit formation. The actual deepsea environment cannot be easily reproduced...

... ABSTRACT Hydrogen embrittlement occurs when a material’s mechanical strength is weakened by the penetration of atomic hydrogen inside the material, the hydrogen sources are diverse and they all intervene in this phenomenon. Plating processes and cathodic protection induce the production...

.... An additional five corrosion anomalies had been previously repaired. Recent annual cathodic protection (CP) surveys, and a close-interval potential survey conducted in 2015, all indicate good cathodic protection levels along the line. AC voltages as high as 6 V were measured along the pipeline and were...