... that involve a variety of galvanic interfaces. For this reason, Naval Air Systems Command (NAVAIR) has adopted the approach of testing galvanic assemblies comprising scribed painted panels joined with more noble fasteners such as stainless steel (and sometimes titanium). materials and corrosion Pipeline...

... assemblies are often restricted to plate geometry specimens. Some crevice assemblies for tube geometry have been proposed and used during the last ten years, but they showed a large dispersion of the results due to the difficulty to control crevice geometries on curved surfaces. From this background...

... construction materials Subsurface Corrosion criterion steel materials and corrosion well integrity Publication Division permission protection manuscript cathodic prevention SCE specimen polarization center bar exposure assembly Houston macrocell current activation CATHODIC PREVENTION...

... Steel Corrosion Monitoring in Concrete Slab using a Long-Period Fiber Grating Assembly Fujian Tang, Yizheng Chen, Yan Tang, Zhaochao Li, Genda Chen Missouri University of Science and Technology 1401 N. Pine Street Rolla, MO 65401-0030 USA ABSTRACT Steel corrosion in concrete structures is a slow...

... flowline corrosion Subsurface Corrosion Ennoblement natural seawater metals & mining riser corrosion Publication Division exposure Pipeline Corrosion well integrity biofilm specimen alloy Houston permission tropical seawater assembly seawater materials and corrosion...

... Pipeline Corrosion well integrity texas 77084 flowline corrosion riser corrosion PCPC tube Subsurface Corrosion Publication Division service condition permission Houston copper corrosion risk specimen assembly seawater materials and corrosion excursion Upstream Oil & Gas...

... the effect of crevice geometry, several crevice configurations simulating service conditions were evaluated including flanges assembled with gaskets, bolts mounted with nuts to plates, and the standard CREVCORR-type crevice formers. The crevice geometry was confirmed to be of major importance in terms...

... based on some form of galvanic potential table, as in MIL-STD-889. However, in mixed material assemblies it is the galvanic current that determines the severity of corrosion, not the galvanic potential , and the two are not directly related. The design engineer needs a way to estimate the true...

... Management anode chain Corrosion Inhibition oilfield chemistry well integrity deep well groundbed application anode groundbed anode Houston chlorine gas permission assembly manuscript South Creek Drive environmental condition texas 77084 magnetite anode anode system consumption rate...

... the best and most cost effective choice to apply a clamping load used to assemble a joint with the option of disassembly, if and when required. The simplicity of a bolted joint to provide a clamping force has made it one of the most accepted and utilized engineering products. Unfortunately, most equipment...

... rate, temperature, dry-wetting cycle, inhibiting effects, etc. Moreover, in most mechanical assemblies the overall effect of multiple material components and the complexity of the geometry make corrosion prediction difficult. In this article a unique 3D simulation technology to predict galvanic...

... structure? Large FRP vessels have been fabricated in separate sections at fabricator shops, and sent to assembly sites for several decades. This paper describes the methods used to remove the old vessel and install and assemble the new vessel. Keywords: FRP, fiberglass reinforced plastic, GRP, glass...

... using an attached Parr controller and a thermocouple inserted into the autoclave. The thermocouple was positioned at the center of the vessel near the electrode assembly to provide the most accurate measurement and control of the fluid temperature. The Parr controller also regulated the speed...

... of this paper deal primarily with threaded fasteners used to assemble structural steel, machine components, process equipment internals, flanging for pressure vessels, piping, etc. and include material references to carbon steels, low alloy steels, stainless steels and nonferrous alloys. FAILURE MODES...

... Pipeline Corrosion well integrity dwell time spark plasma flowline corrosion riser corrosion resistance ph 11 materials and corrosion displacement electrochemical property Subsurface Corrosion tungsten porosity morphology reaction corr value assembly displacement profile...

... discoloration of the ZRC and corrosion free of the exposed steel over the entire test exposure. Macrocell Assemblies EOC and Macrocell Current Trends: Preliminary evolution of galvanic current (Igalv), as well as the mixed EOC is shown in Figure 5 for up to 60 days of exposure (data not available for C4/Fe...

... electrode anode cable US government H2S management dolphin assembly installation Corrosion Management steel tendon CP system 2009 Copyright Government work published by NACE International with permission of the author(s). The material presented and the views expressed in this paper are solely...

... concentration co 2 Production Chemistry site 0 martensitic stainless steel corrosion resistance Upstream Oil & Gas resistance assembly onshore well Sulfide stress high temperature Offshore well partial pressure specimen point bend specimen room temperature 2009 Copyright ©2009 by NACE...

... materials and corrosion corrosion current CCT Pipeline Corrosion well integrity gasket flowline corrosion Subsurface Corrosion initiation texas 777084 crevice assembly South Creek Drive permission specimen Houston interface assembly seawater metals & mining riser corrosion...

... assemblies obtained for stainless steel, black oxide, ultra corrosion resistant, and zinc-coated steel bolt components in contact with steel and aluminum base metals. The appearance of the base metal/bolt surface condition was consistent with the macrocell galvanic current trends recorded for the coupled...