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A new building was under construction for a hospital campus for specialized treatment. For logistical reasons, a multi-million dollar piece of medical equipment was placed in one room prior to completion of construction. A pedestal is installed on the floor and houses copper gas tubing and electrical connections for the equipment.
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EN Engineering (ENE) completed an AC interference study over 68 miles of an operator’s transmission line. In addition, an ACVG survey of approximately one (1) mile of the pipeline was conducted at the take-off point of the 8” line. As a result of this AC interference study, evidence of elevated AC corrosion risk has not been found on the operator’s pipeline. However, a review of the provided data shows evidence of DC interference due to a nearby foreign rectifier groundbed at the take-off point of the operator’s line.
Structural engineering analysis is an important part of condition assessment of aging concrete structures. Structural engineers involved in condition assessment, maintaining, and repairing concrete structures need to be informed of the principles and practice of corrosion risks facing aging concrete structures. The approach towards this issue, from a corrosion engineer’s standpoint, is to do an inspection/condition assessment before making any form of judgements or recommendations.
Hydrogen embrittlement is a process that results in a decrease of the ductility of metals as a result of absorbed hydrogen. Advanced high-strength steels used in the automotive industry are materials that are considered prone to hydrogen embrittlement. Hydrogen can enter the material during steelmaking or processing steps, such as pickling, cleaning, phosphating, and electroplating.
Transmission pipeline companies utilize successive ILI tool runs to identify, size, and determine the corrosion growth rate (CGR) of pipeline features that may be detrimental to the operation of the pipeline [1, 2]. The importance of back-to-back ILI tool runs in monitoring and maintaining the safe operation of a pipeline is further supported by the methodologies’ incorporation by US regulators for high consequence areas. The calculated CGR from the ILI tool runs is used to determine maintenance digs required to mitigate the identified features prior to the next scheduled re-inspection interval.
Over the past decades cost pressure in oil refining has increased, especially in Europe where the consumption of oil products is decreasing over time. Refineries are investigating ways to increase margin and, given that they account for around 80% of total refinery expenditure, reduction of crude oil cost is a key factor. One way of doing this is to purchase cheaper and generally less desirable crude from global markets.