... of buried pipeline data in the presence of dynamic AC interference were collected. The data mainly included the parameters of cathodic protection and stray current interference. The trend of fluctuations in different areas was analyzed and the relevant interference parameters that include interference time...

... fluctuations generated by electrochemical systems, in particular corroding systems, round-robin (RR) tests have been performed by different groups. 1,2 Recently, three new RR tests on electrochemical noise (EN) measurements with dummy cells have been performed by the European Cooperative Group on Corrosion...

... fluctuation oxide layer permission Houston master heat mV SCE (1) ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA, 19428-2959 USA Trade Name Understanding the Corrosion of Low-Voltage Al-Ga Anodes Devon Baker Virginia Tech 213 Holden Hall Blacksburg, VA 24060 USA Alan...

... the need for removal of the drifts in the potential and current fluctuations during the measurement periods. The results gathered show that the inhibition efficiency reached a maximum for an inhibitor concentration of 1.0 g/l for the first 48 hours of exposures. Generally, ENA showed a good correlation...

... flowline corrosion riser corrosion fluctuation pit re-alkalization treatment Subsurface Corrosion environmental condition steel re-alkalization phase pit re-alkalization phase materials and corrosion Upstream Oil & Gas current output current density Pipeline Corrosion concrete...

... Corrosion Inhibition oilfield chemistry Corrosion Management interference flowline corrosion Production Chemistry survey result productivity Pipeline Corrosion riser corrosion fluctuation ECDA management software module structure-to-electrolyte potential soil potential materials...

... different flow conditions, it was clear that an additional source of potential and current fluctuations could be represented by stirring of solution [2-4]. In this study, the rotating cylinder electrode (RCE) has been used to investigate the effect of flow on EN generation. RCE is considered to be a good...

... to explain how the ionospheric electrojet current, the magnetosphere, and the solar winds combine to induce a current in the crust of the Earth. But the corrosion engineer can be satisfied by knowing that the Earth is an almost infinite electrical conductor in the path of a fluctuating magnetic field. Basic...

... not adopt any mitigation stray current corrosion measures except using insulation mat between the rail and the ground. A section of the XinDa pipeline, about 9km long (from No. 8 test point to No. 23 test point), closely parallels the Dalian light railway. rail transportation fluctuation substation...

... with electrochemical noise (EN) instrumentation, uniform corrosion is characterized by random fluctuations of electrochemical current noise (ECN) and electrochemical potential noise (EPN) and low Pitting Percentage and Instability values (statistical parameters related to the degree of localized corrosion); pitting...

... charge fluctuations from dynamic corrosion processes. The main advantage compared to other electrochemical techniques is the contemporary and sensible way of getting information from the beginning of and the tendency to corrosion. This is also the basis for applications for corrosion testing...

... in the course of such a single event as electron currents. A separate current source is described for the anodic dissolution as well as for the electron consuming cathodic reaction. The theoretical reflections about the connection between the elementary currents and the thereby caused potential fluctuations...

... and corrosion Upstream Oil & Gas flowline corrosion riser corrosion Rp value real time system Subsurface Corrosion fluctuation paraffin oil polarization resistance current response Pipeline Corrosion well integrity impedance oil-brine mixture noise LPR measurement electrical continuity...

... ABSTRACT Measurements of electrochemical noise, including current, and electrolyte-resistance fluctuations, have been carried out in a flow-loop cell with the objective to assess and/or monitor corrosion in pipelines and to characterize hydrodynamic flows in pipelines. Linear flow velocities...

... the produced gas volume measured at STP and is therefore very approximate. At failure, Vgs was < 4 m/s for all nine lines and one line exhibited very large fluctuations. As was the case for both liquid components, Vgf and Vgn differed by less than Fgn in ? Water Cut There was a wide variation in water cut...

... disk electrode. The current fluctuations generated by film removal and surface repassivation at the wear track and flowing to a small disk electrode inserted at the center of the large one and electrically isolated from it were measured with a zero-resistance ammeter (ZRA) connected between the two...

... management activities. CORROSION PROCESS ANALYSIS A Corrosion process is characterized by fluctuations in stream analytical parameters, corrosion monitoring data resulting from the fluctuations in operating conditions/stream analytical parameters and deviations in corrosion control measures. However...

...A NEW APPROACH FOR ESTIMATING THE CRITICAL CONDITIONS OF STRESS CORROSION CRACKING USING POTENTIAL FLUCTUATION MEASUREMENT H. Inoue, M. Kinoshita, Y. Maeda Osaka Prefecture University, College of Engineering, 1-1, Gakuen-cho, Sakai, Osaka 599-8531, Japan ABSTRACT A new approach for estimating...

... Spontaneous potential and current fluctuations, namely electrochemical noise, have received considerable attention since Iverson 25 discovered a correlation between the frequency and amplitude of electrode potential fluctuations and corrosion processes. A 'noise signatures' method was proposed to detect...

... Pipeline Corrosion Subsurface Corrosion Corrosion Inhibition oilfield chemistry well integrity flowline corrosion Production Chemistry Upstream Oil &amp; Gas H2S management flow pattern fluctuation metallic surface real time system materials and corrosion riser corrosion Corrosion...