NDLI: Good Practice Handbook for PTS Evaluation (Result of the IAEA Co-Ordinated Project on PTS)

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Pistora, Vladislav Brumovsky, Milan Taylor, Nigel
Copyright Year	2009
Abstract	Integrity and lifetime of reactor pressure vessels are practically determined by their behavior during “pressurized thermal shock” (PTS) emergency regimes as the most severe regimes during reactor operation. Assessment of these potential regimes is carried out mostly in deterministic way but used procedures are different in different countries. Proper and reliable evaluation of these PTS regimes depends on many parameters and approaches used during computations. During the period 2005 – 2008, the Coordinated Research Project 9 (CRP 9) “Review and Benchmark of Calculation Methods for Structural Integrity Assessment of RPVs During PTS” was organised by the IAEA. The overall objective of this Coordinated Research Project was to perform benchmark deterministic calculations of a typical pressurised thermal shock (PTS) regime and finally to recommend the best practice for PTS assessment. This paper describes main results and collected experience within this project that were bases for the preparation of the “Good Practice Handbook for Deterministic Evaluation of the Integrity of a Reactor Pressure Vessel during a Pressurised Thermal Shock” that will be issued as an IAEA TECDOC. Main parameters discussed in this handbook are: - selection of overcooling sequences; - thermal-hydraulics analyses; - temperature and stress field calculations; - crack tip loading incl.K estimations; - integrity assessment; - analyses of nozzles; - national practices; - results from sensitivity studies. Finally, recommendations for reliable and correct PTS evaluation are given.
Sponsorship	Pressure Vessels and Piping
Starting Page	387
Ending Page	393
Page Count	7
File Format	PDF
ISBN	9780791843666
DOI	10.1115/PVP2009-77396
e-ISBN	9780791838549
Volume Number	Volume 3: Design and Analysis
Conference Proceedings	ASME 2009 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2009-07-26
Publisher Place	Prague, Czech Republic
Access Restriction	Subscribed
Subject Keyword	Computational methods Temperature Reactor vessels Computation Thermal shock Emergencies Nozzles Carbon reinforced plastics Fracture (materials) Thermal hydraulics Stress
Content Type	Text
Resource Type	Article

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