A large amount of oil and gas production needs to be followed by optimal pipeline maintenance. Most cases pipe leaks are sudden in nature that able cause losses over a long period time. The consisting sand particles increase erosion rate, especially at the elbows. Cases prevented through routine inspections based on accurate rate predictions. This study aims predict elbow piping systems using c...

Hydrogen uptake in steel structures can cause a degradation mechanical properties such as toughness, and induce cracks. This phenomenon is widely known hydrogen embrittlement. For structural steels subjected to cathodic protection or pipelines transporting high-pressure gas, embrittlement represents an important challenge. Charpy V-notch testing provides fast inexpensive method for quantifying ...

Many fluids transported by pipelines are hazardous. It is therefore often necessary to install leak detection (and localization) systems (LDS), especially due to legal regulations like • the “Code for Federal Regulations (CFR) Title 49 Part 195” [1], API 1130 2 Ed. [2], both for the USA, or • the “Technische Regeln für Fernleitungen” (TRFL) (Technical Rules for Pipelines) in Germany [5]. This p...

The API 20E, the Enterotube, and routine methods of Cowan and Steel were used in parallel to identify 245 members of the Enterobacteriaceae. The API 20E and conventional methods gave the same identification in all but 2 (0-8%) of the 245 organisms tested. The Enterotube correctly identified 85% of these organisms on the first testing. On re-testing those organisms incorrectly identified the Ent...

This paper first introduces a workflow parallelization strategy, based on a set of clearly defined heuristics, including data partition and a variation of pipelining. Then, the paper outlines an architecture for a workflow manager, based on Web services, that incorporates the heuristics. Finally, the paper reports on the current status of the implementation of the workflow manager.

Since early works, web servers have been designed as parallel applications to process many requests at the same time. While web service based applications are performing more and more, larger and larger transactions, this parallelization culture still not reached the client side. Business to Business (B2B) applications are becoming intensive users of web transactions through Service Oriented Ar...

Residual stresses (RS) in pipes welded by a fully automated friction welding process, called FRIEX, are investigated using the contour method (CM) and X-ray diffraction (XRD). Samples were produced self-developed equipment, which is based on interaction between consumable intermediate rotary ring two stationary pipe sections, varying loading rate applied during of API 5L B with an X65 ring. Mec...