Direkt zum Inhalt
  • Paul Scherrer Institut PSI
  • PSI Research, Labs & User Services

Digital User Office

  • Digital User Office
  • DE
  • EN
  • FR
Paul Scherrer Institut (PSI)
Suche
Paul Scherrer Institut (PSI)

Hauptnavigation

  • Research at PSIÖffnen dieses Hauptmenu Punktes
    • Research Initiatives
    • Ethics and Research integrity
    • Scientific Highlights
    • Scientific Events
    • Scientific Career
    • PSI-FELLOW
    • PSI Data Policy
  • Research Divisions and LabsÖffnen dieses Hauptmenu Punktes
    • Overview
    • Research with Neutrons and Muons
    • Photon Science
    • Energy and Environment
    • Nuclear Energy and Safety
    • Biology and Chemistry
    • Scientific Computing, Theory and Data
    • Large Research Facilities
  • Facilities and InstrumentsÖffnen dieses Hauptmenu Punktes
    • Overview
    • Large Research Facilities
    • Facilities
    • PSI Facility Newsletter
  • PSI User ServicesÖffnen dieses Hauptmenu Punktes
    • User Office
    • Methods at the PSI User Facilities
    • Proposals for beam time
    • Proposal Deadlines
    • Data Analysis Service (PSD)
    • EU support programmes
  • New ProjectsÖffnen dieses Hauptmenu Punktes
    • SLS 2.0
    • IMPACT
  • DE
  • EN
  • FR

Digital User Office (mobile)

  • Digital User Office

Sie befinden sich hier:

  1. PSI Home
  2. Labs & User Services
  3. NES
  4. LNM
  5. Research Programs
  6. Materials Ageing & Structural Integrity
  7. SAFE

Sekundäre Navigation

Laboratory for Nuclear Materials

  • About LNM
  • Events
  • Organisation / People
  • Research Programs Ausgeklappter Submenü Punkt
    • Advanced Nuclear Materials
    • Nuclear Fuels
      • H-Uptake
      • Cladding Mechanics
      • Fuel Burn-Up
      • Cross-Cut Synchrotron
    • Materials Ageing & Structural Integrity Ausgeklappter Submenü Punkt
      • ZINC
      • PLiM
      • PROBAB
      • SAFE
      • DIAGNOSTICS
      • Helium Effects on IASCC
      • PARENT
      • NORA
      • CPFEM
  • Experimental Facilities
    • Hotlab
    • Hydrogenation
    • SINQ Target Irradiation Program (STIP)
    • In-situ Creep under Irradiation Facility
    • Electron Microscopy Facility
    • Metallography
    • Mechanical Testing
    • Corrosion Testing
    • Non-Destructive Characterization
    • Beamline Techniques at SINQ/SLS
  • Teaching and Education
    • List of PhD Theses
    • List of Master Theses
  • Advisory Committee
  • Partners / Links
  • Publications
  • Scientific Highlights

Info message

Dieser Inhalt ist nicht auf Deutsch verfügbar.

SAFE: Safe LTO in the context of environmental effects on fracture, fatigue & EAC

The SAFE-I (2012 – 2014) and SAFE-II (2015 – 2017) projects are supported by the Swiss Nuclear Safety Inspectorate ENSI and aim to fill selected important knowledge gaps in the field of environmentally-assisted cracking (EAC) and environmental effects on fatigue and rapid fracture in safety-relevant pressure boundary components in the primary coolant circuit of light water reactors.

Pressure boundary components in the primary coolant circuit of LWRs are made of low-alloy and stainless steels and are very critical components with regard to safety and lifetime. During service, toughness and ductility of these materials can decrease with time, due to irradiation induced embrittlement (RPV only), thermal ageing or potential environmental effects. Under simultaneous effect of the reactor coolant, thermo-mechanical operational loads and irradiation, cracks can initiate and grow by EAC and thermo-mechanical fatigue (TMF), which finally could lead to a large leak or component failure. Several EAC and TMF cracking incidents occurred in LWRs in the last four decades. Critical components are thus periodically inspected by non-destructive examination to detect defects before they reach a critical size necessary for rapid fracture.

An accurate knowledge on the degradation of the toughness and fracture properties of these materials during service and of the system conditions which may lead to EAC initiation and growth is thus evidently indispensable to ensure the safe and economic long-term operation in this context. Reliable quantitative experimental data on these phenomena and a basic knowledge on the underlying mechanisms are essential to evaluate their possible effects on structural integrity/safety and lifetime of components, to identify critical component locations/operating conditions and to define and qualify possible mitigation, repair and maintenance actions.

Within the various sub-projects of SAFE-I & SAFE-II the following unexplored aspects and concerns are currently evaluated in this field:
  • Environmental effects on fracture toughness and tearing resistance of RPV steels
  • Stress corrosion cracking in Alloy 182 dissimilar metal welds
  • Stress corrosion cracking initiation in Alloy 182 weld metal
  • Environmental effects on fatigue in stainless steels
Extended Description of the SAFE Project

Mit Sidebar

Contact

Hans-Peter Seifert

Paul Scherrer Institute
OHSA B09
CH-5232 Villigen PSI

Telephone:
+41 56 310 4402
E-mail:
hans-peter.seifert@psi.ch

top

Fussbereich

Paul Scherrer Institut

Forschungsstrasse 111
5232 Villigen PSI
Schweiz

Telefon: +41 56 310 21 11
Telefax: +41 56 310 21 99

Der Weg zu uns
Kontakt

Besucherzentrum psi forum
Schülerlabor iLab
Zentrum für Protonentherapie
PSI Bildungszentrum
PSI Guest House (in english)
PSI Gastronomie
psi forum-Shop

 

Service & Support

  • Telefonbuch
  • User Office
  • Accelerator Status
  • Publikationen des PSI
  • Lieferanten
  • E-Rechnung
  • Computing
  • Sicherheit

Karriere

  • Arbeiten am PSI
  • Stellenangebote
  • Aus- und Weiterbildung
  • Career Center
  • Berufsbildung
  • PSI Bildungszentrum

Für die Medien

  • Das PSI in Kürze
  • Zahlen und Fakten
  • Mediacorner
  • Medienmitteilungen
  • Social Media

Folgen Sie uns: Twitter (deutsch) LinkedIn Youtube Facebook Instagram Issuu RSS

Footer legal

  • Impressum
  • Nutzungsbedingungen
  • Editoren-Login