Problems and chances for probabilistic fracture mechanics in the analysis of steel pressure boundary reliability

Problems and chances for probabilistic fracture mechanics in the analysis of steel pressure boundary reliability. Staat, M. In Technical feasibility and reliability of passive safety systems for nuclear power plants. Proceedings of an Advisory Group Meeting held in Jülich, 21-24 November 1994, volume IAEA-TECDO, pages 43–55, Vienna, 1996. International Atomic Energy Agency, Vienna. ZSCC: 0000004
$Problems and chances for probabilistic fracture mechanics in the analysis of steel pressure boundary reliability [pdf]$ Paper abstract bibtex

It is shown that the difficulty for probabilistic fracture mechanics (PFM) is the general problem of the high reliability of a small population. There is no way around the problem as yet. Therefore what PFM can contribute to the reliability of steel pressure boundaries is demonstrated with the example of a typical reactor pressure vessel and critically discussed. Although no method is distinguishable that could give exact failure probabilities, PFM has several additional chances. Upper limits for failure probability may be obtained together with trends for design and operating conditions. Further, PFM can identify the most sensitive parameters, improved control of which would increase reliability. Thus PFM should play a vital role in the analysis of steel pressure boundaries despite all shortcomings.

@inproceedings{staat_problems_1996,
	address = {Vienna},
	title = {Problems and chances for probabilistic fracture mechanics in the analysis of steel pressure boundary reliability},
	volume = {IAEA-TECDO},
	copyright = {All rights reserved},
	url = {http://opus.bibliothek.fh-aachen.de/opus/volltexte/2006/189/ https://www-pub.iaea.org/MTCD/Publications/PDF/te_920_web.pdf http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/28/021/28021623.pdf},
	abstract = {It is shown that the difficulty for probabilistic fracture mechanics (PFM) is the general problem of the high reliability of a small population. There is no way around the problem as yet. Therefore what PFM can contribute to the reliability of steel pressure boundaries is demonstrated with the example of a typical reactor pressure vessel and critically discussed. Although no method is distinguishable that could give exact failure probabilities, PFM has several additional chances. Upper limits for failure probability may be obtained together with trends for design and operating conditions. Further, PFM can identify the most sensitive parameters, improved control of which would increase reliability. Thus PFM should play a vital role in the analysis of steel pressure boundaries despite all shortcomings.},
	booktitle = {Technical feasibility and reliability of passive safety systems for nuclear power plants. {Proceedings} of an {Advisory} {Group} {Meeting} held in {Jülich}, 21-24 {November} 1994},
	publisher = {International Atomic Energy Agency, Vienna},
	author = {Staat, Manfred},
	year = {1996},
	note = {ZSCC: 0000004},
	keywords = {leak-before-brea, probabilistic fracture mechanics},
	pages = {43--55},
}

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