...In the present study, pH variations during cathodic protection and DC non-stationary anodic interference are recorded using a new arrangement of the sample-pH probe and a sufficiently fast pH logger. The direct pH measurement could be used to analyze the cathode surface in the cathodic protection...

... loosening to inflammatory reactions. ⁴ In particular, post-surgical conditions of the human body can provide an aggressive physiological environment for the implant alloy. For the first 10 to 15 days following surgery, the human body's inflammatory response results in a local in-vivo pH...

... but variable pH, the objective being to coarsely define the sensitivity domain of the materials and identify the embrittlement mechanisms involved. NACE ^(*) MR0175 / ISO ^(†) 15156-3 ¹ standard specifies H₂S partial pressure thresholds limits for a safe use...

...In the recent years, multiple studies concluded that the increase in pH, promoted by the generation of OH^- at the steel surface as a consequence of the protection current, is fundamental for achieving corrosion protection of the steel in soil, namely passivation ^{7 – 9 , 13 , 14}...

...EXPERIMENTAL PROCEDURE Experimental Design The International Organization for Standardization (ISO) ⁽¹⁾ 15156 standard defines a series of possible sour environments depending on brine pH and H₂S content in associated gas. ¹⁹ Based on the definitions of the sour...

... pH dominant water chemistry species controlling corrosion reaction prevalent corrosion product sour service regime The presentation is intended to be a consistent and unified view of the relationships between partial pressure, water chemistry and corrosion product solubility. Acid Gas...

...stainless steel chlorides stress corrosion cracking pH chloride content temperature oxygen stress relief INTRODUCTION Chloride promoted stress corrosion cracking (ClSCC) is a damage mechanism that can occur in a chloride containing aqueous environment. Damage can occur during in-service...

... measurement), AASHTO T 289 ⁸ (pH measurement), AASHTO T 290 ⁹ (soluble sulfate content measurement), and AASHTO T 291 ¹⁰ (soluble chloride content measurement). AASHTO describes the electrochemical requirements for fill material to be suitable for MSE wall construction...

... of three chemicals – 1) for pH control, 2) for oxygen control 3) for scale control. Infrared thermography (IR thermography) Analysis of detailed flow patterns and system reactions to key variables (burner arrangement, air fuel mixture). Burner firing analysis Evidence of wrong firing was seen from visual...

...However, a recent literature review ⁶ on the use of DSS in sour environment seems to contradict the unique temperature range between 50 and 100 °C as the most susceptible to provide SCC. If a minimum of SCC resistance for 22 %Cr DSS is observed around 80 °C in the solution at pH 2.8...

... monitoring system was also installed to measure the time dependent variations in anode current, structure to seawater potential, cathode current density and monopile hydrogen gas concentration produced from operation of the CP system. Within a few weeks of the trial commencing, the seawater pH inside...

... caused by anodic depolarization of the steel or by excessive cathodic protection and alkalization is made and discussed in relation to the current density criteria in industry standards. AC corrosion AC interference cathodic protection soil pH pipeline INTRODUCTION Present cathodic protection...

...INTRODUCTION Corrosion of carbon steel rebar in marine concrete structures remains a persistent problem. While carbon steel in the high pH concrete medium is capable of producing a passive film that naturally prevents corrosion, this film can be easily broken down by the presence of chloride...

... Cathodic Protection Copper sulphate reference electrodes (CSE) Transformer Rectifier pH moisture content Wenner four-pin method Data Acquisition System Soil Resistivity INTRODUCTION Soils act as the most complex environment for metallic corrosion. Corrosion of metals in soil can cause relatively...

...) conditions were not known. Aluminium anodes have been used extensively in the offshore oil and gas sector and marine industry, such as within ballast tanks and platform concrete leg foundations for decades without any reported concerns relating to changes in water pH. OFFSHORE TRIAL A CP trial...

... bacteria (SRB) by undertaking a laboratory study at room temperature. ³ In the case of sandy soil with IB, CP can be achieved by applying a polarized potential of −0.850 V_CSE (referred to saturated copper―copper sulfate reference electrode) or more negative accompanied by pH above...

... scrubbers failures pH chloride slurry sump INTRODUCTION Wet Flue Gas Desulfurization (FGD) or scrubber systems underwent major design changes in the electric utility industry beginning in the 1990’s. Designers eliminated spare absorber towers. This change placed a new demand on engineers to be more...

... an actual oil and gas field condition in laboratory tests is important to evaluate the actual corrosion performance of materials. The environmental factors such as partial pressure of H₂S and CO₂, temperature, concentration of chloride ion and pH of the solution are essential to define...

... in seawater, and for some of the elements, these properties are sensitive to changes in pH. The corrosion properties and pH sensitivity of Ni-Al Bronze reflect the behavior of its alloying elements, and behave like copper in neutral pH, and as Ni and Al at low pH. The work presented her is mainly focused...

... in the soil adjacent to a defect are currently not well understood. Especially the role of sulphate-reducing bacteria is unclear: the presence of these bacteria can influence the local environment by affecting pH (most likely by acidification), but also by affecting levels of Fe²⁺ concentration due...