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This experimental setup includes two samples of buried steel pipes, one provided with an impressed current cathodic protection (ICCP) system and the other left unprotected - in a manipulated artificial environment.
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Methodology, observations and analysis of using pulse width modulated (PWM) DC power source rather than a steady state DC power source on a buried pipeline sample.
Two benchmark experiments were performed by NASA and CERL. The first was performed in 1998 at the NASA KSC Corrosion Technology Laboratory and the second in 2007 in Okinawa, Japan under the leadership of CERL.
An indirect impedance technique is assessed as a possible method to detect corrosion within external post-tensioned bridge tendons. The method aims to extract the impedance of the steel-grout interface from the impedance measured at the surface of the grout.
Details of a second procedure developed by the testing centre INNCOA to assess the performance of several insulation systems with respect to the ingress of water vapour through a damaged section of the covering layer.
UNS R56404Titanium exposure to warm, naturally-aerated, dilute, HF-containing, fresh acid mixtures does result in unacceptable, elevated etch rates. Several common inorganic salts such as aluminum, molybdate, and/or borate salts, inhibit this attack.
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.
In May, 2014, a total of five leaks were reported in two 34” (863 mm) diameter pipelines (both only 5 years in operation) due to internal corrosion. This paper describes all the activities that have been carried out determine the root cause.
Recently, a light naphtha discharge pump (made of UNS J91150 casing and impeller) malfunctioned, which caused severe damage to the impeller. Details of the failure analysis will be presented and discussed.
The susceptibility of Stress Corrosion Cracking (SCC) assisted by H2S according temperature and pH. In a second phase, links are highlighted between the differences of cracking resistance and localized corrosion morphologies.
In the framework of studies on the control rods lifetime for Sodium Fast Reactor, three commercial steels were exposed to B4C powder in liquid sodium at 600°C for durations up to 3000 h.
Current test regimes and acceptance levels as concerns the strong detrimental influence on toughness and corrosion resistance of intermetallic particles (IMP) in the microstructure of duplex stainless steels.