... as a significant threat to pipeline integrity; however, no NACE standard criteria were available. Instead, Prinz general guidelines related to the AC current density (ACCD) were typically used. 1 These rules, based on laboratory tests, introduced a “grey area” for AC current densities between 20 A/m 2 and 100...

.... However, the soil resistivity as well as the corrosion potential might depend on the seasonal fluctuations and the protection potential might vary as function of the considered standard. Moreover, all soils parameters cannot be considered in recommendations from standards and cathodic protection criteria...

... knowledge management rail transportation stray current corrosion materials and corrosion transit agency criteria Publication Division stray current control rail transit agency maintenance corrosion consultant flowline corrosion ground transportation information questionnaire guideline...

... Corrosion Subsurface Corrosion H2S management weld toe Corrosion Management criteria texas 77084 permission manuscript Microstructure HISC specimen duplex stainless steel pull head super duplex stainless steel coating threshold residual stress Publication Division stainless steel Houston...

... permission manuscript hydrogen risk matrix Houston matrix criteria texas 77084 corrosion risk assessment model subsea pipeline CORROSION RISK ASSESSMENT MODEL OF SUBSEA PIPELINES NETWORK Faisal M. Al-Abbas, Gusai H. Al-Aithan, Saad Muaili, Qasim Saleem, Balasubramani Bakthavatchalu, Ebadul Haque...

... Production Chemistry criteria Corrosion Inhibition H2S management steel permission Houston texas 77084 alloy revision nace mr0175 iso 15156 corrosion resistant alloy manuscript oilfield chemistry Corrosion Management carbon ballot Publication Division stainless steel requirement hardness...

... pipeline interference testing galvanic anode criteria mitigation interference manuscript cp current Publication Division permission cp influence cp interference CATHODIC PROTECTION INTERFERENCE - INTERFERENCE TESTING AND MITIGATION OF INTERFERENCE ISSUES Jeffrey L. Didas Matcor, Inc. 101...

... for the tank bottom application. Experimental work is reported to evaluate the CP criteria applicability in presence of VCIs, the work also provides a guideline for selecting an effective corrosion mitigation strategy for combined VCI and CP systems. In summary, VCI and CP, used in combination, are found...

... fillet weld. While this exceeds the typical design requirements, exceeding the minimum requirements, inspection codes do not provide acceptance criteria for the design. A more thorough volumetric inspection was conducted, in addition to the typical magnetic particle inspection, to confirm the full...

... representation of the CP conditions. Another common practice of not interrupting the CP current while measuring coupon-to-soil potentials is also a concern where closely coupled impressed current anode systems are installed adjacent to the buried piping systems. Alternate criteria are often necessary...

... Division Production Chemistry explosion heat treatment oilfield chemistry Corrosion Management criteria metals & mining H2S management Thickness steel specimen application pressure vessel permission clad plate hybrid alloy texas 77084 test result manuscript alloy Houston post weld...

... ppm). The underside of the bottom plates are not coated (bare) and the cathodic protection (CP) design is based on 100% bare surface area. As per NACE (2) RP0193-2001 recommended practice for on grade steel storage tanks, the protection criteria for CP system to serve its intended purpose of corrosion...

... pipeline. Based upon this goal, the test methods were reviewed with the following four pass-fail criteria. First, the test needed to quantify the coating remaining as the coating itself is the first line of defense of corrosion control. Second, any coating that was damaged needs to be protected reasonably...

... be optimized to maximize results of the life extension methods. This may be achieved by modeling the margins between operating loads and the structure conditions to study the impact of the ranking criteria on population distributions. Ranking criteria is needed to understand levels of degradation which may...

... and trend the CP system performance. Criteria for effective CP in grounded mixed-metal piping systems are also discussed. Introduction The Catawba Nuclear Station (CNS) is a Pressurized Water Reactor (PWR) generating station having a total capacity of 2,258 megawatts. CNS is located on a 391 acre...

... Abstract For pipelines running across cold regions; soil temperature at the depth of buried pipeline would be sub-zero. However, whether the -0.85V CSE protection potential criteria or a more positive one was applicable for this situation was still an issue. In this paper...

... using distributed anodes. pipeline corrosion riser corrosion criteria materials and corrosion h2s management calculation corrosion inhibition oilfield chemistry corrosion management publication division steel cathodic protection system texas 77084 flowline corrosion production...

... potential interval to reach acceptable corrosion protection if AC interference is present. In order to assess CP criteria in the presence of AC, weight loss tests on cathodically protected carbon steel specimens were carried out in soil-simulated conditions in the presence of AC densities ranging from 1...

... flowline corrosion artificial intelligence anomaly priority index soil resistivity permission information texas 77084 materials and corrosion riser corrosion criteria publication division potential dip manuscript resistivity fuzzy logic model houston defect indication corrective action...

... problems encountered by facility operators and corrosion monitoring personnel right from shortlisting of chemical vendors, performing compatibility tests, establishing evaluation criteria, until the issue of the field trial report to the asset owners. Issues highlighted in this paper are based on field...