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Keywords: protection potential
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Proceedings Papers

Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-10971
... platform protection potential Publication Division inspection plan flowline corrosion materials and corrosion Production Chemistry well integrity H2S management model prediction coating main platform manuscript ancillary jacket Houston steel jacket permission inspection point CP system...
Proceedings Papers

Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11325
... materials and corrosion metals & mining riser corrosion Pipeline Corrosion well integrity test specimen Upstream Oil & Gas localized corrosion protection potential flowline corrosion Subsurface Corrosion concentration texas 77084 CPP test crevice corrosion simulant...
Proceedings Papers

Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9275
... between current and potential for bare steel in North Sea waters (b) Assumed polarisation curve for the anodes The simulation with separation distances 100 and 400mm between the structures resulted in the protection potentials shown in Figure 4 and Figure 5. As expected, surfaces at positions away from...
Proceedings Papers

Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9353
... condition. Test has been performed both in normal and overprotection condition, varying the off period duration, monitoring weekly the protection potential. Key words: Cathodic protection; carbon steel; protection potential; oxygen reduction; overprotection. INTRODUCTION Buried carbon steel pipelines...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7797
... be competently designed for stand-alone operation, but when combined together, protection potentials and life of the systems may be affected by interference. Consequences may include early consumption of anodes and more positive potentials towards end of life. Such effects can readily occur when different...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7454
... the structure, computer modelling is necessary because the classical anode resistance formulas are not applicable. floating production system Publication Division coating Upstream Oil & Gas resistance ICCP system interference FPSO protection potential turret chain connector subsea system...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7702
... the protection potential in projects with CP 5. Lowerable rack of sensors including potential, pH, dissolved oxygen, temperature and resistivity External side: A. Drop-cell (reference cell) measuring protection potential of CP B. Stabber (contact reference cell) mounted on ROV for measuring the protection...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7688
... technique has produced an uncertain or undefined protection potential (E prot ) related to pitting corrosion. The ASTM G192 standard or Tsujikawa-Hisamatsu Electrochemical (THE) technique was originally developed to address similar problems in assessing the crevice corrosion susceptibility of corrosion...
Proceedings Papers

Paper presented at the CORROSION 2015, March 15–19, 2015
Paper Number: NACE-2015-5657
... energy subsurface corrosion cathodic protection permission texas 77084 mean current density flowline corrosion materials and corrosion renewable energy aluminum anode anode acidification initial current density seawater metals & mining riser corrosion protection potential current...
Proceedings Papers

Paper presented at the CORROSION 2015, March 15–19, 2015
Paper Number: NACE-2015-5753
... to about 800 A/m 2 . Samples were cathodically polarised in the presence of AC interference for four months: protection potential, protection current density and AC density were periodically monitored. Based on experimental results, a corrosion risk map is proposed: overprotection (potential more negative...
Proceedings Papers

Paper presented at the CORROSION 2014, March 9–13, 2014
Paper Number: NACE-2014-3627
... in different environmental conditions, and reproducible results have been obtained. Key words: cathodic protection, splash zone, tidal zone, conducting materials, protection potential. 1 Paper No. 3627 ©2014 by NACE International. Requests for permission to publish this manuscript in any form, in part...
Proceedings Papers

Paper presented at the CORROSION 2014, March 9–13, 2014
Paper Number: NACE-2014-4091
... chloride content permission PREN chemical composition Markov chain crevice corrosion Pipeline Corrosion riser corrosion chloride concentration Government work transition probability stainless steel critical chloride content transition matrix protection potential corrosion application...
Proceedings Papers

Paper presented at the CORROSION 2013, March 17–21, 2013
Paper Number: NACE-2013-2443
... corrosion. However, the direct electric heating system can influence design parameters for cathodic protection, such as sacrificial anode capacity, protection potential and design current densities. This may have large consequences for design of the CP system in terms of number anodes and required anode...
Proceedings Papers

Paper presented at the CORROSION 2012, March 11–15, 2012
Paper Number: NACE-2012-1373
... sacrificial anode for carbon steel and stainless steel in deep-water environment are studied through indoor experiments. The results can provide some references for the application of CP technology in deep- water environments. Keywords: deep water, cathodic protection, CP current density, protection potential...
Proceedings Papers

Paper presented at the CORROSION 2012, March 11–15, 2012
Paper Number: NACE-2012-1401
... controlled sacrificial anodes can completely stop the corrosion problems, thus assuring optimal lifetime for pumps, caissons, valves, tubular heat exchangers and piping systems. CORROSION AND PROTECTION POTENTIALS In contacted with water, the alloy s potential will increase due to extraction of electrons...
Proceedings Papers

Paper presented at the CORROSION 2011, March 13–17, 2011
Paper Number: NACE-11055
... typical pipeline steels polarized to a standard cathodic protection level have been investigated. Special focus has been put on development of calcareous deposits under influence from AC voltage. Furthermore, effects from AC voltage on cathodic protection potential have been studied. Key words...
Proceedings Papers

Paper presented at the CORROSION 2010, March 14–18, 2010
Paper Number: NACE-10237
... metals & mining Corrosion Inhibition materials and corrosion Subsurface Corrosion H2S management protection potential specimen Pipeline Corrosion environmental law solid waste management chloride concentration alloy 22 flowline corrosion oilfield chemistry riser corrosion...
Proceedings Papers

Paper presented at the CORROSION 2010, March 14–18, 2010
Paper Number: NACE-10032
... is more electronegative than? -1.15 V CSE). Uncertainties still exist on protection potential interval and on protection current density to reach an acceptable protection when AC interference is present. In the presence of AC interference, with possible AC-induced corrosion on the pipeline...
Proceedings Papers

Paper presented at the CORROSION 2010, March 14–18, 2010
Paper Number: NACE-10086
... the electrolyte is determined by solving the Laplacian equation, using the boundary element method. The entire process is non-linear, and is solved iteratively. The results of the mathematical modelling include current density and protection potentials on all parts of the tank base, as well as power loss...
Proceedings Papers

Paper presented at the CORROSION 2009, March 22–26, 2009
Paper Number: NACE-09407
... Pipeline Corrosion materials and corrosion Upstream Oil & Gas water management riser corrosion criteria steel CSE polarization flowline corrosion Subsurface Corrosion cathodic protection contribution protection SRB cathodic polarization well integrity protection potential...

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