Abstract. This study characterizes the microbial community composition over Haas Mound, one of most prominent cold-water coral mounds Logachev Mound province (Rockall Bank, NE Atlantic). We outline patterns distribution vertically – from seafloor to water column and laterally across mound couple these topography hydrography. Samples water, sediment Lophelia pertusa were collected in 2012 2013 locations that chosen based on high definition video surveys. Temperature current measurements...

Abstract A full-scale testing program was conducted to evaluate the use of carbon-epoxy composite repair technology reinforce severe corrosion defects in large-diameter pipes. The technical elements associated with this included reinforcing up 85% deep 24-inch diameter pipe samples, including integrating design equations, conditions, and performance subject cyclic pressure burst at elevated temperatures. An objective test changes thickness considering a range depths based on guidance...

Abstract. This study shows the microbial community composition over Haas Mound, one of most prominent cold-water coral mounds Logachev Mound Province (Rockall Bank, NE Atlantic), outlining distribution patterns both vertically from seafloor to water column and laterally across mound coupling this topography hydrography. Samples were collected in 2012 2013 biotopes that partially chosen based on high definition video surveys conducted prior sampling included overlaying (400 m depth 5+10 above...

Abstract Regeneration is an essential process for all multicellular organisms, allowing them to recover effectively from internal and external injury. This has been studied extensively in a medical context vertebrates, with pathways often investigated mechanistically, both derive increased understanding as potential drug targets therapy. Several species other parts of the metazoan tree life, noted their regenerative prowess, have previously targeted study. allows us understand mechanisms see...

Composite repairs have been extensively used for in high-pressure transmissions pipelines. However, few studies investigated the interactions of cathodic protection and composite repairs. This article uses multiple testing approaches to determine if shielding may occur under a repair. Two different phases must be considered preventing shielding. First, repair disbond, creating local environment below coating. Second, allow permeation current pipe surface. Multiple test methods targeted at...

Abstract Corals are associated with diverse and abundant bacterial communities, some members of which may promote host health through the exclusion pathogens, increased environmental resilience, by extending metabolic pathways in holobiont. Much our understanding microbiomes anthozoans is derived from studying Scleractinia, though Alcyonacea also harbour microbial communities. This study examined community alcyoniid Lobophytum pauciflorum , using 16S rRNA gene amplicon sequencing to document...

Abstract In 2015, composite repair materials were used for the first time in an extensive pipeline crack testing program. Since that time, multiple test programs have continued to show functionality of using a carbon fiber, epoxy system significantly slow or deter growth axially oriented cracks crack-like features. To further build onto this successful testing, CSNRI, conjunction with Williams Pipelines and ADV Integrity, has received pipe spools SCC removed from service purposes. These...

Abstract While the integrity of pipeline facilities has always been an important topic, focus in past heavily on pipelines. However, pipelines and have different issues. are regulated see defects such as corrosion dents, may more issues with bending at pipe support areas. This paper will use composites to repair protect piping facility environments. Composites a preventative option for location soil-to-air interfaces locations ability bends restore structural be discussed. Testing currently...

Abstract Part of the testing program that composite repair systems are required to undergo for qualification is installation on pipes with various hole sizes and subsequent pressure tests. The objective these tests determine lower confidence level energy release rate (γLCL) system. A requirement set by standards calculating γLCL failure must occur edges repair, rather than through its thickness. However, layer count may be thicker predicted mathematically in order have consistent...

Abstract Composite repairs have been extensively qualified and used to repair external corrosion dents encountered on pipeline systems. More recently, test programs explored extending the use of composite reinforce crack-like indications, including those found in low-frequency electric resistance welded (LF-ERW) pipe. This paper addresses repairing selective seam weld (SSWC) using systems, which is yet another extension for repairs. Current approved techniques SSWC include full encirclement...

Abstract Composite repairs have been extensively used over the past twenty-plus years as a high-integrity repair technology for high pressure transmissions pipelines. Numerous industry test programs increased knowledge related to techniques, design, and quality control of installations. However, little work has performed interactions cathodic protection composite repairs. This paper reviews several approaches determining if shielding may occur under repair. Preventing can be considered in...