Lindner H.,RTRC |
Van Remmerden H.,ROSEN |
Shamgar A.,Williams Transco
Proceedings of the Biennial International Pipeline Conference, IPC | Year: 2014
Challenging conditions for pipeline inspection can be caused by several different parameters and conditions (length, diameter changes, installations and operating conditions). Very often the real challenge is resulting from a combination of these influencing parameters. For example, a very long pipeline becomes particularly critical for battery lifetime if the flow rate is low. Each single individual parameter does not necessarily constitute such challenge. Some basic examples and a particular combination of pipeline parameters and operational conditions are presented in this article. The crucial parameters of the regarded pipeline are: 36", about 700 km length, high wall thickness, high pressure and flow rates and a subsea wye piece. Some of these requirements are already demanding for former inspection tools. But the complex interaction of the features increases the challenge for the tool design significantly. Particularly the combination of high flow, high wall thickness and the wye piece passage required special attention. The article describes the pipeline properties and run conditions and the consequences for the entire cleaning and inspection program. Notably the interactions of the parameters regarding the MFL inspection are highlighted and the resulting tool concept is presented as well as the run results. Copyright © 2014 by ASME.
Baumeister M.,RTRC |
Bouaoua N.,RTRC |
Hennig T.,RTRC |
Berlekamp M.,RTRC |
Proceedings of the Biennial International Pipeline Conference, IPC | Year: 2010
Ultrasonic crack detection represents a reliable and accepted inline inspection technology for the application in liquid media. The technology is long standing and considered as industry standard [1-3]. As a result of various demands, e.g. increased temperature levels above 70°C, high pressures exceeding 100 bars and medium types (e.g. heavy crude oil) with inherently high damping and temperature dependency of the damping characteristic the complexity can be primarily found within the bounding conditions. The reduction of inner pipeline diameter, e.g. below 120 mm, represents a further increase of degree of complexity. This paper gives access to the design and development approach chosen by ROSEN for ultrasonic crack detection tools and the case of pipelines with an outer diameter ranging from 6" to 8". All previously mentioned issues and requirements are considered. The mechanical design of the ultrasonic crack detection tools is described. Copyright © 2010 by ASME.
Beuker T.,ROSEN |
Brockhaus S.,ROSEN |
Pipeline and Gas Journal | Year: 2011
Common threats like mechanical damage, corrosion, and cracking are affecting both liquid and gas pipelines. While a SCC is by no means limited to one type of pipeline, a conclusive body of evidence shows that it predominantly poses a threat to gas pipelines. To reach the universal goal of any in-line inspection (ILI) of reliably and accurately determining the state of the asset, two basic conditions must be met. First, by making allowance for the flow and pressure conditions within the line, a smooth and controlled tool passage must be achieved to ensure optimal data collection. Second, the inspection tool must be fitted with adequate technology to ensure that the specific threats posed to gas pipelines such as SCC and TLC are consistently detected. Provided that these two basic conditions are met, knowledgeable and experienced analysts can then successfully overcome the specific issues associated with the in-line inspection of gas pipelines.
Lindner H.,Rosen |
PPIM 2012 - 24th Pipeline Pigging and Integrity Management Conference | Year: 2012
A discussion on ROSEN's new cleaning tool for black powder covers field experience in a 170-km natural gas pipeline, which was affected by the common challenge of heavy black powder contamination; and evaluation of run data and tool performance. This is an abstract of a paper presented at the Pipeline Pigging & Integrity Management Conference (Houston, TX 2/8-9/2012).
Doescher C.,Technology and Research Center |
Beuker T.,Technology and Research Center |
Oil and Gas Journal | Year: 2010
Electromagnetic transducer technology (EMAT) in-line inspections are sufficiently sensitive to detect crack-like features as part of pipeline integrity management. The sensitivity threshold for individual cracks accepted throughout the pipeline industry equals 30 mm length and 1 mm depth. ROSEN USA studied a combination of artificial and natural crack-like indications after introducing the EMAT tools to service, finding flaws 20 mm long and 0.65 mm deep with a probability-of-detection of 92%. EMAT detected crack-like anomalies 20 mm long and 0.42 mm deep with a POD of 44%. The depth value given for a cluster is typically the deepest value found within the cluster. The crack depth reported as a part of an EMAT inspection follows the API categorization scheme. The condition of the external pipeline coating is valuable information in the integrity assessment process. The EMAT inspection system provides characteristics of both the coating type and the disbonded coating.
Rosen | Date: 2012-12-03
Electric light switches; Electric switch plates; Electric switches; Electronic timers; Light switches; Plastic guard for covering wall switches.