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The purpose of the “Bore Test” is to know the external quality of the coating after the installation of the pipe section, as picture 1. NACE standard “TM-102-2002-SG”1a defines four kinds of coating quality such as: excellent, good, fair and poor. To know the final quality of coating with this procedure. It was used two different electrical tests. DC current test using minimum voltage drop method and, the 3 pole test which is called by the same manufacture of the Multifunction Ground Resistance tester.
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Houston’s water system serves more than 4.5 million people regionally and produces more than 146 billion gallons of treated water every year. The city has more than 300 above-grade water line crossings, some of which have been in service for over 75 years. In 2012, Houston Public Works (HPW) implemented a program to inspect every above-grade water line crossing across the city.
Corrosion and cavitation erosion on steel structures are problems and can have a huge impact on safety and economy. In order to prevent corrosion, protective coatings can be used as a barrier between the steel surface and the corrosive elements such as seawater or various liquid cargos. However, when coating systems fail the surface will be exposed to the environment with all consequences. From that perspective, the weakest link is the coating used to protect the steel.
Vegetal polymers are today a cost effective solution for complex metallic geometry parts (bolts, flanges, valves, etc…), PVC vinyl film became the same for flat and semi flat shapes (bulkheads, tank walls, pipes, etc…). These methods do not require costly surface preparation such as SSPCSP10, just cleaning per SSPC-SP2. Together it leads complete and long longevity if compared to most of conventional painting procedures, generating both performance and economic benefits.
CLTWater is one of the largest water entities in the Southeast region, managing a total of ten water and wastewater treatment plants serving a population of approximately one million. The MCWWMF is the largest wastewater treatment plant of five wastewater facilities owned and operated by CLTWater, rated at a 64 MGD treatment capacity and accounting for over half of CLTWater’s wastewater treatment system.
Industry executives involved in industrial blasting and coating projects may find it surprising that climate control equipment typically used in those processes played a major role in recovery efforts in New Orleans following Hurricane Katrina. This paper highlights how this equipment helped restore three important structures in New Orleans – the Louisiana Superdome, Notarial Archives and the evidence room of the New Orleans Police Department.
The Global coating market is having a lot of pressure from official bodies and customers to take the business into a green direction. A greener approach will create need for new products and specifications. Increased global trade will put further pressure on producer to serve similar qualities to all countries
All ships need periodic maintenance, either onboard a FPSO, in a water ballast tank or a hull side of a marine vessel. When preparing for maintenance of such structures it has been standard practice to sandblast the surface. Sandblasting creates superb surfaces for coating application with ultimate cleanliness, but due to the dust generated by the process it is facing more local restrictions due to environmental impact and HSE.
Nuclear power provides a heat source for steam-electric generation that does not pollute the atmosphere. Heat is produced in a nuclear reactor by the neutron radiation emitted by the SteadyState fusion of enriched or natural uranium. The nuclear renaissance that is emerging in the United States will be based on new power plant designs from a variety of U.S. and international sources.
Does the decreasing VOC levels and the increasing restrictions mean lower profits for the coating contractor? Not necessarily. Today, there are new very low VOC, and evenzero VOC, coatings that meet performance standards of the more traditional coatings withwhich we are accustom to using.
Recently new instruments have been introduced into the market for measuring the profile/roughness of blasted surfaces. One of the major developments is the ability to use scanning technology to rapidly assess a surface and provide profile measurement. This paper looks at the new instruments and the potential impact they can have on the measurement of profile and the benefits to the inspector in terms of the improved efficiency available in completing an inspection.