Proposal for estimating leak and break frequencies of piping systems in probabilistic safety assessment

• Autorzy: Berg H.-P. , Gersinska R. , Sievers J.
• Języki publikacji: EN

Abstrakty

EN

The estimation of leak and break frequencies in piping systems is part of the probabilistic safety assessment of technical plants. In this paper, the statistical method based on the evaluation of the German operational experience for piping systems with different diameters is described because an earlier estimation has been updated and extended introducing new methodical aspects and data. Major point is the inclusion of structure reliability models based on fracture mechanics calculation procedures. As an example of application the statistical estimation method for leak and break frequencies of piping systems with a nominal diameter of 50 mm (the volume control system of a German pressurized water reactor) was updated. Moreover, the evaluation of the operational experience was extended to 341 years with respect to cracks, leaks and breaks in the volume control system of German pressurized water reactors (PWR). Using the actual data base, new calculations of leak and break frequencies have been performed and the results have been compared with the previous values.

Słowa kluczowe

EN

leak frequencies; break frequencies; probabilistic safety assessment; piping system; nuclear power plant

• Wydawca: Polskie Towarzystwo Bezpieczeństwa i Niezawodności
• Czasopismo: Journal of Polish Safety and Reliability Association
• Rocznik: 2009
• Tom: Vol. 1
• Strony: 33--42
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Berg H.-P.

• Bundesamt für Strahlenschutz, Salzgitter, Germany

autor

Gersinska R.

• Bundesamt für Strahlenschutz, Salzgitter, Germany

autor

Sievers J.

• Gesellschaft für Anlagen- und Reaktorsicherheit, Köln, Germany

Bibliografia

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