Failure Assessment Methodologies for Pressure-Retaining Components under Severe Accident Loading
Joint Authors
Grebner, H.
Sievers, J.
Arndt, J.
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-06-10
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
During postulated high-pressure core melt accident scenarios, temperature values of more than 800°C can be reached in the reactor coolant line and the surge line of a pressurised water reactor (PWR), before the bottom of the reactor pressure vessel experiences a significant temperature increase due to core melting.
For the assessment of components of the primary cooling circuit, two methods are used by GRS.
One is the simplified method ASTOR (approximated structural time of rupture).
This method employs the hypothesis of linear damage accumulation for modeling damage progression.
A failure time surface which is generated by structural finite element (FE) analysis of varying pressure and temperature loads serves as a basis for estimations of failure times.
The second method is to perform thermohydraulic and structure mechanic calculations for the accident scenario under consideration using complex calculation models.
The paper shortly describes both assessment procedures.
Validation of the ASTOR method concerning a large-scale test on a pipe section with geometric properties similar to a reactor coolant line is presented as well as severe accident scenarios investigated with both methods.
American Psychological Association (APA)
Arndt, J.& Grebner, H.& Sievers, J.. 2012. Failure Assessment Methodologies for Pressure-Retaining Components under Severe Accident Loading. Science and Technology of Nuclear Installations،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-475572
Modern Language Association (MLA)
Arndt, J.…[et al.]. Failure Assessment Methodologies for Pressure-Retaining Components under Severe Accident Loading. Science and Technology of Nuclear Installations No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-475572
American Medical Association (AMA)
Arndt, J.& Grebner, H.& Sievers, J.. Failure Assessment Methodologies for Pressure-Retaining Components under Severe Accident Loading. Science and Technology of Nuclear Installations. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-475572
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-475572