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The authors have identified high corrosion growth rate (CGR) features during excavation on one of the polyethylene tape coated lines by running more frequent corrosion in-line inspection tool runs.
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This work introduces a novel flow assurance strategy which utilizes a multifunctional coating applied via in-situ pigging to provide passive protection to the pipeline interior.
Oil storage tanks experienced accelerated corrosion from the soil side. The short term strategy adopted was to drill under the tanks and inject vapor phase corrosion inhibitors to extend the tank floor life in a risk-rated phased effort for the 48 tanks.
This paper re-examines most public and in-house corrosion data on the effects of six typical impurities to advance the fundamental understanding of how pipeline steels corrode in sc-CO2 environments and identify knowledge gaps for further investigations.
Corrosion control systems for the underside steel plates of above-ground storage tanks (ASTs) may not provide adequate protection. Volatile Corrosion Inhibitors (VCIs) reduce corrosion in this area and their effectiveness is presented in this paper.
A method of determining a required inspection interval for large storage tanks - with design modicfication, risk based inspection (RBI) and utilizing finite element analysis (FEA) - with particular attention for the weld between the bottom annular plates and shell wall.
Compatibility between vapor corrosion inhibitors (VCI) and cathodic protection (CP) for the tank bottom application. Guidelines presented for selecting an effective corrosion mitigation strategy for combined VCI and CP systems.
Vapor corrosion inhibitor installation for cased crossing and aboveground storage tank bottoms at military facilities. Safety, testing, documentation and lessons learned. Also, NEC requirements where applicable.
Quantitative analysis of (pipeline) dents (QuAD) was presented at NACE Corrosion 2017. A new semiāquantitative analysis of dents (SQuAD) capable of analyzing a large number of dents associated with corrosion features with a reasonable computational effort is proposed herein.
Impact of exposure to a low temperature environment below -30oC (-22oF) was investigated on a carbon fiber and epoxy composite repair system that had previously been qualified to the ASME(1) PCC-21 Article 4.1 nonmetallic repair standard.
Some of many hundreds of miles of prestressed pipe installed in the late 1960’sand 1970’s have failed due to corrosion of the prestressing wire. Is it safe to follow conventional CP protection guidelines? Should the protection criteria be selected by age and condition of the pipeline, physical and mechanical properties of the wire, and the environmental conditions surrounding the pipeline?
To investigate the corrosive impact of fuels with biogenic components by performing corrosion fatigue tests on notched and un-notched specimen of stainless 17% chromium steel 1.4016 (X6Cr17) AISI430 in air and biofuel E85 (fuel with 85% ethanol added).