Pipelines welding

Arzhaev A.I., Bougaenko S.E., Smirnov Yu.I., Aladinsky V V, Makhanev V.O., Saburov Yu. Residual stress modelling and analysis for INPP primary circuit pipeline welds. Transactions of the 14th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT 14), Lyon, 1997, Vol. 1, Div, B, pp. 345-352. 

Arzhaev A T, Bougaenko S E., Denisov I N., Aladinsky V V, Makhanev V.O. Technical basis and software development for flaw assessments in NPP pipeline welds. In Ageing of Materials andMethods for the Assessment of Lifetimes of Engineering Plant, R.K. Penny (Ed ), 1997, pp. 63-68. 

Radiographic tests are made on pipeline welds, pressure vessels, nuclear fuel rods, and other critical materials and components that may contain three-dimensional voids, inclusions, gaps or cracks that are aligned so that the critical areas are parallel to the x-ray beam. Since penetrating radiation tests depend upon the absorption properties of materials on x-ray photons, the tests can reveal changes in thickness and density and the presence of inclusions in the material. 

St. Croix, VI, Refinery Fire Pipeline weld failure 10,500,000 loss... 

Used to test integrity of pipeline welds, boilers, and aircraft... 

Rogante, M., Battistella, P. and Cesari. F. (2006) Hydrogen interaction and stress-corrosion in hydrocarbon storage vessels and pipelines weldings, Int. J. Hydrogen Energy, 31/5, pp. 597-601. 

Stress applied externally to a weld soon after completion, for example during the lowering-off operation in pipeline welding, will often be additional to that described above and may therefore temporarily increase the risk of cracking. 

Hart P H M Material composition versus weld properties . TWI Inti Seminar, Pipeline Welding , London, Feb 1977, Paper 11. Also Recent developments in pipeline welding , Ch 12, 57-62. Pub TWI, 1979. 

NACE Technical Committee, Task Group T-lF-23, Stress corrosion cracking resistance of pipeline welds a special report on sulfide stress cracking resistance of pipeline welds. Mater. Perform. 32 (1993) 58-64. 

Iridium-192 Reactor Industrial radiography pipeline weld inspection cancer therapy intravascular therapy to reduce restenosis... 

In the design of pipelines, welded seams requiring inspection should be avoided to the extent practicable and any such seams should be readily accessible. 

The first cause (flux interference) can be removed by adopting a proper cleaning process. Welds are the potential holidays in underground pipelines. Weld areas are generally the first regions to show coating failures in a non-aqueous environment. 

A leak of 0.5 mm equivalent diameter (DN) in the pressure pipe, as a result of an initial defect in the pipeline weld penetration through the whole wall thickness ... 

The ESAB range of consumables for pipeline welding has been developed to match the steel qualities and the demands from the pipeline industry for reliable, easy to... 

One of the claimed advantages of composite repairs over steel sleeves is that their installation requires no welding to an in-service pipeline. It is clear from the previous discussion that the installation of Type A sleeves, which can serve the same purpose as composite repairs, also requires no welding to an in-service pipeline. Welds that do not contact the carrier pipe are not considered to be in-service welds according to Appendix B of API 1104 (API Standard 1104, 2005), even though longitudinal seam welds are made while the pipehne is in service. 

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