Two-step method verfies uprating of older German gas pipeline
Two-step method verfies uprating of older German gas pipeline
- Neue Suche nach: Hamann, R.
- Neue Suche nach: Plonski, T.
- Neue Suche nach: Hamann, R.
- Neue Suche nach: Plonski, T.
A two-step evaluation using a classical deterministic method and a modern probabilistic one, verfied uprating a 35-year-old German natural gas pipeline. Evaluation in the deterministic redesign focused on such aspects as material properties, defects in the pipeline and welds, fabrication tolerances, and a new calculation of MAOP (maximum allowable operating pressure). Each component was analyzed, resulting in a ranking list (weakest links of a pressure uprating), a fitness-for-service analysis for the pipeline, and a collection of significant input data for the probabilistic analysis. The probabilistic assessment analyzed the reliability of the exisiting system, again identifying the weakest links of a pressure uprating. On of the basic ideas of this concept is an early identification of the so called 'weakest links' of the system and a definition of adequate activites to overcome these weakest limks. This article presents the main aspects of this concept and discusses the experience gained by its application in a project for a 20 % pressure uprating. More detailed information regarding identification of failure modes, limit-state functions, failure consequences, and the adequate estimation of input data will be presented in the future.
Dokumentinformationen
Two-step method verfies uprating of older German gas pipeline
Die Überprüfung einer geplanten Druckerhöhung bei einer älteren deutschen Erdgaspipeline mit einer deterministischen und einer Wahrscheinlichkeitsmethode
Oil and Gas Journal ; 102 , 9 ; 62-67
2004
6 Seiten, 6 Bilder, 2 Tabellen, 7 Quellen
Aufsatz (Zeitschrift)
Englisch
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