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A laboratory flow loop is used to evaluate the ability of an on-line, electrochemical, biofilm-activity probe to monitor biofilm activity in synthetic oilfield brine and correlate its activity to localized pitting corrosion. In addition, bio-traps containing porous polymer beads for trapping biomass are evaluated as a rapid means to evaluate biofilm community structure.
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A laboratory investigation of corrosion under insulation (CUI) using methods given in ASTM G189 for cyclic temperature, wet/dry conditions. Two long term exposure tests of three material conditions and two insulative materials (mineral wool and calcium silicate insulations).
How calcareous deposits formation in seawater influences the performance of a galvanic cathodic protection (CP) system in seawater. Coupling current measured. A resistance set between the cathode and the anode simulated circuit resistance of CP. Steel cathode potential over immersion time. Calcareous deposits analyzed by X-Ray Diffraction.
For over 20 years OSHA has been working on getting a Construction Standard for Confined Spaces into the workplace and it has finally arrived. This paper will give a brief background on the standard development as well as go over the new standard and definition of what is a confined space.
This paper summarizes major elements of a recent recommended practice (RP) on Pipeline Corrosion Management (PCM) published by the European Federation of Corrosion (EFC). The RP goes into details on a methodical approach to carrying out PCM.
Several hundred wireless wall-thickness monitoring sensors were installed in crude and vacuum distillation units. This enables capability to determine the corrosion risk associated with different crudes long before any undesirable consequences of corrosion events occur.
The paper discusses “past” developments, “present” status, and “future” advancements of inspection, monitoring, and modelling technologies.
A developed monitoring approach confirmed that the EN-based electrochemical surveillance can detect changes in a petrochemical plant that otherwise could lead to catastrophic failure.
A functional test program designed with laboratory conditions suitable for the field corrosive situations and screening the performance of ER and LPR probe types for further application in the field.
An adapted electrochemical noise (EN) technique was developed. This research presents the ability to embed “early warning” information within corrosion management strategies. The materials studied included a niobium stabilized stainless steel.
The authors have developed the monitoring method “CIPE” which determines corrosion rate using Tafel slope extrapolation method. To confirm accuracy, the results of CIPE are compared with mass losses of steel bars corroded in concrete.
Challenges associated with coordinating the modelling, design, and installation of an alternating current interference and mitigation systems. The project consisted of a 65 kilometer long double circuit 500 kilovolt (kV) overhead transmission in a heavily congested right-of-way corridor with more than 80 pipelines.