Rosenfeld M.J.,Applus+ RTD
Proceedings of the Biennial International Pipeline Conference, IPC | Year: 2014
Pipeline construction projects underway in the US during the 2005 to 2010 timeframe encountered occurrences of unintended diameter expansion during hydrostatic testing of high-strength line pipe. Causes of expansion were in some cases attributed to inadequate pipe manufacturing and procurement practices or in other cases to high external loads present concurrently during pressure testing. This paper considers the implications to long-term pipeline integrity arising with pipe that underwent unintended diameter change with associated strain accumulation. The paper presents a relationship between test pressure and diameter expansion, estimation of the reserve strain capacity, effects on fracture control, and effects on integrity reassessment intervals. The conclusions are that the integrity issues associated with limited magnitudes of diameter change can be readily managed. Copyright © 2014 by ASME. Source
Rosenfeld M.,Applus+ RTD |
Fassett R.,Kleinfelder , Inc.
PPIM 2013 - Proceedings of the 25th Pipeline Pigging and Integrity Management Conference | Year: 2013
A discussion covers data of pressure related ruptures due to interacting threats on pipelines that were operating below 30% SMYS; pipelines that ruptured while operating < 20% SMYS; areas of technology that the integrity assessment industry may want to focus on to address issues that may affect local distribution companies more than interstate natural gas operators; the types of interaction that caused the ruptures; and a high level decision tree that will allow an operator to begin to address how to model their system to determine if they may have these same threat combinations. This is an abstract of a paper presented at the Proceedings of the 25th Pipeline Pigging & Integrity Management Conference (Houston, TX 2/13-14/2013). Source
Applus+ RTD | Date: 2015-05-18
A tool, method, and system for in-line inspection or treatment of a pipeline, with the tool including a first traction module on a first longitudinal end, and a second traction module on a second end. The tool includes at least one work module, such as an encoder module and/or an ultrasonic testing module, which is positioned between the first and second traction modules. A plurality of flexible connecting elements each interconnect one of the first and second traction modules for articulation to the at least one work module. Each of the first and second traction modules has at least one sealing element that causes propulsion in response to a fluid flow in a pipeline to be inspected or treated in one direction and allows relatively unhindered passing of the fluid flow in an opposite direction.
Applus+ RTD | Date: 2014-08-27
Computer software for pipeline operations, pipeline inspection and pipeline integrity. Scientific research and development; Scientific and technological services, namely, scientific research, analysis, testing, design and development of computer hardware and software, all in the field of pipeline operations, pipeline inspection and pipeline integrity.
Applus+ RTD | Date: 2012-09-05
A method and system are described for examining the interior material of an object from a surface of an object using ultrasound having a frequency of at least 100 kHz. The method comprises the step of transmitting at least a first ultrasound signal by a first ultrasound transmitter of a first number of ultrasound transmitters to the interior material of the object for forming a first image in order to determine, according for example to the principle of inverse wave field extrapolation, where in the interior material of the object reflections and/or diffractions occur. Reflections and/or diffractions of the first ultrasound signal from the interior material of the object are received using a second number of ultrasound receivers which are acoustically coupled to the surface of the object at positions which are distributed in at least one dimension of the surface of the object.