White Papers

The carbon steel pipes of the Cunduacán I Compression Station operate in a very corrosive environment. The challenge faced by conventional protective coatings is the continuously wet surface of the pipe.

Gaskets have been used for many years to disrupt the electrochemical pathway between anodes and cathodes in bolted joints. However, the gasket must maintain its primary objective which is providing a leak tight seal, while being electrically insulating.

This paper is intended to educate the reader on some common issues that influence interrupted surveys, existing solutions to these issues, and a description of how the PCRX provides value in its groundbreaking approach to solving a key issue with interrupted surveys. For the purposes of this paper, underground pipelines will be the targeted protected structure.

The passage of time inevitably takes its toll on the integrity of assets. Corrosion, in all its forms, is one of the most significant time-dependent pipeline degradation mechanisms, compromising the integrity of our pipelines and potentially reducing their remaining service life. The challenge for us, as pipeline engineers, is clear: to safely manage our pipeline infrastructure into the future.

Pipeline operators have realized tremendous cost efficiencies by collocating in the same corridors as high-voltage alternating current (HVAC) lines, but evolving and difficult challenges exist within these applications to protect against pipeline corrosion and safety hazards.

Stone wool insulation possesses unique physical properties that make it ideally suited to a number of industrial applications including petrochemical processing. The open cell structure of stone wool encapsulates and restricts air movement, which gives it excellent insulation capabilities, while still allowing for water vapor to freely pass through.

Electrochemical methods provide an alternative to traditional methods used to determine the rate of corrosion. Direct and quantitative determination of corrosion rates can be determined from simple electrochemical measurement like Linear sweep voltammetry

How well does a plastic isolation gasket with filler fair in today’s oil and gas pipelines? This paper , will analyze the chemical compatibility, the temperature resistance, the pressure resistance, the emissions capabilities and even the ease of installation of these materials.

Almost every man-made structure involves the use of metals; often, non noble metals that are susceptible to corrosion. The estimated worldwide costs for corrosion derived damages are about 2.5 trillion dollars. Proper corrosion protection could save 15–55% of the cost of these damages.

PTASCC occurs by the combination of 3 factors; formation of Polythionic acid due to exposure the metal sulfide scale to oxygen and water in the aqueous phase, residual tensile stress and sensitized microstructure having the Cr carbide precipitation at the grain boundary by welding.

Historically, the Cathodic Protection (CP) industry has lagged behind the technology curve. It has taken years for technicians to ditch their Big Chief tablets in favor of more modern data acquisition tools. As pipeline operators have started to adopt relevant technology for gathering and storing CP data, workflow efficiency has increased. But those technologies are not always fully leveraged to improve data quality.

Due to the harsh marine environment and isolated location, offshore steel structures have long been difficult to maintain, leading to high maintenance costs for asset owners. In the oil & gas industry, three-coat anti-corrosive coating systems have traditionally been used for maintenance of offshore steel structures.

Ultrasonic crack technology, using piezoelectric transducers, is a proven and widely used solution for crack and crack-like defect detection in liquid pipelines. Over the past 20 years, only minor developments and improvements in this area were offered to pipeline operators.

The galvanic potential tables people have been using for years often give the wrong answer. Now the U.S. Navy is taking a new approach and updating MIL-STD-889, the galvanic corrosion standard, replacing galvanic charts and tables with corrosion rate calculations. What does this mean for industry?

Corrosion under insulation – CUI – has been neglected for many years, but is now recognized as one of industry’s greatest challenges with respect to materials. CUI has been the cause of several accidents involving the loss of human life and personal injury, fire and pollution.