000			01971nmc a2200205 4500
005			20260521165715.0
008			260224s xxu
082			_aCD I249 1 0013788
100	1		_aAchterbosch, G.G.J. _922037
110	2		_aInternational Gas Union, IGU _913105
111	2		_aWorld Gas Conference (22nd. : 2003 jun 1-5 : Tokyo) _922029
245	0	0	_aNopig - A new technique in pipeline integrity
270			_a12/09/06 ; 22/07/2003
300			_a10 p.
500			_aDisponible en CD en formato PDF
520			_aTranscripción del resumen original del autor: Worldwide pipeline operators are searching for alternatives for intelligent pigging or hydro testing to prove integrity of their pipelines. N.P. Inspections Services GmbH offers an above ground inspection technique called NoPig to detect metal loss. In the last three years Gastransport Services was involved in investigations by means of projects but also by actual surveys on pipelines to determine the performance of the instrument in laboratory and field conditions. The investigations show a large progress in performance. It has been shown that corrosion defects that are critical for pipelines up to 12" can be detected when taking the specifications of the instrument into account. The paper describes the measurement principle of the NoPig technique and the main characteristics of the performance of the instrument as determined in the investigations and measurements. Furthermore, attention is given to the interaction of instrument performance, corrosion distribution based on pigrun data and the tolerances in defect assessment. Finally the possible use of the NoPig system in an inspection program for pipelines is discussed. The overall conclusion is that the NoPig inspection technique can offer a valuable contribution to the determination of pipeline integrity.
710	2		_aInternational Gas Union, IGU _913105
942			_cCONGTP _2ddc
999			_c149403 _d149403