Structural analysis of NPP components and structures

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Capabilities for effective structural integrity assessment have been created and extended in several important cases. In the following presented applications deal with pressurised thermal shock loading, PTS, and severe dynamic loading cases of containment, reinforced concrete structures and piping components. Hydrogen combustion within the containment is considered in some severe accident scenarios. Can a steel containment withstand the postulated hydrogen detonation loads and still maintain its integrity? This is the topic of Chapter 2. The following Chapter 3 deals with a reinforced concrete floor subjected to jet impingement caused by a postulated rupture of a near-by high-energy pipe and Chapter 4 deals with dynamic loading resistance of the pipe lines under postulated pressure transients due to water hammer. The reliability of the structural integrity analysing methods and capabilities, which have been developed for application in NPP component assessment, shall be evaluated and verified. The resources available within the RATU2 programme alone cannot allow performing of the large scale experiments needed for that purpose. Thus, the verification of the PTS analysis capabilities has been conducted by participation in international co-operative programmes (Keinänen et al. 1998a). Participation to the European Network for Evaluating Steel Components (NESC) is the topic of a parallel paper in this symposium. The results obtained in two other international programmes are summarised in Chapters 5 and 6 of this paper, where PTS tests with a model vessel and benchmark assessment of a RPV nozzle integrity are described.
Original languageEnglish
Title of host publicationRATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants
Subtitle of host publicationSynthesis of achievements 1995-1998
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages195-219
ISBN (Electronic)951-38-5264-4
ISBN (Print)951-38-5263-6
Publication statusPublished - 1998
MoE publication typeA4 Article in a conference publication
EventRATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants: Synthesis of achievements 1995−1998 - Espoo, Finland
Duration: 7 Dec 19987 Dec 1998

Publication series

NameVTT Symposium
PublisherVTT
Number190
ISSN (Print)0357-9387
ISSN (Electronic)1455-0873

Conference

ConferenceRATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants
CountryFinland
CityEspoo
Period7/12/987/12/98

Fingerprint

Structural integrity
Structural analysis
Reinforced concrete
Pipe
Water hammer
Hydrogen
Steel
Thermal shock
Detonation
Concrete construction
Nozzles
Accidents
Experiments

Cite this

Saarenheimo, A., Keinänen, H., & Talja, H. (1998). Structural analysis of NPP components and structures. In RATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants: Synthesis of achievements 1995-1998 (pp. 195-219). Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 190
Saarenheimo, Arja ; Keinänen, Heikki ; Talja, Heli. / Structural analysis of NPP components and structures. RATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants: Synthesis of achievements 1995-1998. Espoo : VTT Technical Research Centre of Finland, 1998. pp. 195-219 (VTT Symposium; No. 190).
@inproceedings{1dbe19b5231849be81665b6e3f400b15,
title = "Structural analysis of NPP components and structures",
abstract = "Capabilities for effective structural integrity assessment have been created and extended in several important cases. In the following presented applications deal with pressurised thermal shock loading, PTS, and severe dynamic loading cases of containment, reinforced concrete structures and piping components. Hydrogen combustion within the containment is considered in some severe accident scenarios. Can a steel containment withstand the postulated hydrogen detonation loads and still maintain its integrity? This is the topic of Chapter 2. The following Chapter 3 deals with a reinforced concrete floor subjected to jet impingement caused by a postulated rupture of a near-by high-energy pipe and Chapter 4 deals with dynamic loading resistance of the pipe lines under postulated pressure transients due to water hammer. The reliability of the structural integrity analysing methods and capabilities, which have been developed for application in NPP component assessment, shall be evaluated and verified. The resources available within the RATU2 programme alone cannot allow performing of the large scale experiments needed for that purpose. Thus, the verification of the PTS analysis capabilities has been conducted by participation in international co-operative programmes (Kein{\"a}nen et al. 1998a). Participation to the European Network for Evaluating Steel Components (NESC) is the topic of a parallel paper in this symposium. The results obtained in two other international programmes are summarised in Chapters 5 and 6 of this paper, where PTS tests with a model vessel and benchmark assessment of a RPV nozzle integrity are described.",
author = "Arja Saarenheimo and Heikki Kein{\"a}nen and Heli Talja",
year = "1998",
language = "English",
isbn = "951-38-5263-6",
series = "VTT Symposium",
publisher = "VTT Technical Research Centre of Finland",
number = "190",
pages = "195--219",
booktitle = "RATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants",
address = "Finland",

}

Saarenheimo, A, Keinänen, H & Talja, H 1998, Structural analysis of NPP components and structures. in RATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants: Synthesis of achievements 1995-1998. VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 190, pp. 195-219, RATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants, Espoo, Finland, 7/12/98.

Structural analysis of NPP components and structures. / Saarenheimo, Arja; Keinänen, Heikki; Talja, Heli.

RATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants: Synthesis of achievements 1995-1998. Espoo : VTT Technical Research Centre of Finland, 1998. p. 195-219 (VTT Symposium; No. 190).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

TY - GEN

T1 - Structural analysis of NPP components and structures

AU - Saarenheimo, Arja

AU - Keinänen, Heikki

AU - Talja, Heli

PY - 1998

Y1 - 1998

N2 - Capabilities for effective structural integrity assessment have been created and extended in several important cases. In the following presented applications deal with pressurised thermal shock loading, PTS, and severe dynamic loading cases of containment, reinforced concrete structures and piping components. Hydrogen combustion within the containment is considered in some severe accident scenarios. Can a steel containment withstand the postulated hydrogen detonation loads and still maintain its integrity? This is the topic of Chapter 2. The following Chapter 3 deals with a reinforced concrete floor subjected to jet impingement caused by a postulated rupture of a near-by high-energy pipe and Chapter 4 deals with dynamic loading resistance of the pipe lines under postulated pressure transients due to water hammer. The reliability of the structural integrity analysing methods and capabilities, which have been developed for application in NPP component assessment, shall be evaluated and verified. The resources available within the RATU2 programme alone cannot allow performing of the large scale experiments needed for that purpose. Thus, the verification of the PTS analysis capabilities has been conducted by participation in international co-operative programmes (Keinänen et al. 1998a). Participation to the European Network for Evaluating Steel Components (NESC) is the topic of a parallel paper in this symposium. The results obtained in two other international programmes are summarised in Chapters 5 and 6 of this paper, where PTS tests with a model vessel and benchmark assessment of a RPV nozzle integrity are described.

AB - Capabilities for effective structural integrity assessment have been created and extended in several important cases. In the following presented applications deal with pressurised thermal shock loading, PTS, and severe dynamic loading cases of containment, reinforced concrete structures and piping components. Hydrogen combustion within the containment is considered in some severe accident scenarios. Can a steel containment withstand the postulated hydrogen detonation loads and still maintain its integrity? This is the topic of Chapter 2. The following Chapter 3 deals with a reinforced concrete floor subjected to jet impingement caused by a postulated rupture of a near-by high-energy pipe and Chapter 4 deals with dynamic loading resistance of the pipe lines under postulated pressure transients due to water hammer. The reliability of the structural integrity analysing methods and capabilities, which have been developed for application in NPP component assessment, shall be evaluated and verified. The resources available within the RATU2 programme alone cannot allow performing of the large scale experiments needed for that purpose. Thus, the verification of the PTS analysis capabilities has been conducted by participation in international co-operative programmes (Keinänen et al. 1998a). Participation to the European Network for Evaluating Steel Components (NESC) is the topic of a parallel paper in this symposium. The results obtained in two other international programmes are summarised in Chapters 5 and 6 of this paper, where PTS tests with a model vessel and benchmark assessment of a RPV nozzle integrity are described.

M3 - Conference article in proceedings

SN - 951-38-5263-6

T3 - VTT Symposium

SP - 195

EP - 219

BT - RATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Saarenheimo A, Keinänen H, Talja H. Structural analysis of NPP components and structures. In RATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants: Synthesis of achievements 1995-1998. Espoo: VTT Technical Research Centre of Finland. 1998. p. 195-219. (VTT Symposium; No. 190).