Liquid and Dry Bulk Transport Equipment, Pipeline Installation, Corrosion Management, Inspection and Maintenance

Case Study: Piping needed to stand up to high chloride concentrations

Problem: A major oilsands operation in Alberta, Canada, had an expansion project that needed pipe material for a highly corrosive piping system application. The aggressive internal corrosion was due to reuse of water where chloride concentrations continually increase in recycled 200 degree F water. The external corrosion was due to an acidic soil typical of boreal areas in the Arctic. One of the pipelines was 6.84 miles long and 36 inches in diameter, and used for conveying hot water that separates the bitumen from oilsands. To complicate matters, the pipeline needed to be installed during cold, arctic winters where temperatures reach -49 degrees F.

Solution: They selected GREEN THREAD products manufactured by NOV Fiber Glass Systems, because of its ability to handle high concentrations of chlorides while resisting hydrolysis at the high temperatures expected in the process.

Related: Blog: Gas and Oil Fuel North Dakota’s Rise

Result: The pipeline has been operating successfully for more than five years since installing GREEN THREAD products using ASME B31.3 bonder certification and an ISO 9001 Quality Assurance program that followed the detailed engineering and design efforts required to comply with Canadian Standards Association (CSA) Z662-07 Oil and Gas Pipeline Systems, along with other relevant standards. 210/477-7500;

Case Study: Restoring and protecting oil platform’s deck penetration boots prevents leaks

Problem: California requires all piping on offshore oil platforms to include a means to stop liquids from running down the pipes and contaminating the ocean below. The traditional solution at one offshore oil production facility was to wrap the pipe and deck interface in butyl rubber or rubber tape. Unfortunately, the butyl rubber sheets lasted only four to six months before they began the crack from UV degradation and exposure to salt spray. Rubber tape also only lasted up to a year before the adhesion began to fail. A longer-lasting solution was needed.

Related: Editor's Notebook: Shifting Focus

Solution: Rhino Extreme HP 11-50 from Rhino Linings was specified for the job due to its salt water, chemical and corrosion resistance. First, the existing butyl and steel surfaces were cleaned and prepped. Rhino Linings Primer 161, a flexible elastomeric polyurethane primer was used for its ease of application, quick drying time and zero-VOC properties to ensure a lasting bond. Rhino Extreme HP 11-50 was then spray-applied at 80 mils, covering 2 inches up the pipe and 4 inches along the deck.

Results: The products created a watertight, weather and saltwater-resistant seal on all deck penetrations 6 inches in diameter or greater, ensuring a long-lasting and durable containment solution. 800/422-2603;

Related Stories