SAFESA Technical Manual

The SAFESA approach is the result of a major initiative undertaken by 5 United Kingdom organisations with the support of the UK Department of Trade and Industry. The organisations comprise of:

• Assessment Services Limited
  
• Cranfield University
  
• Lloyd’s Register Engineering Services
  
• Nuclear Electric plc
  
• WS Atkins Science and Technology
  

Contents

INTRODUCTION TO SAFESA

• Role and Format
  
• Background
  

THE QUALIFICATION PROCESS

• Qualification Criteria
  
• The SAFESA Approach
  
• Uncertainty in Structural Qualification
  
• Error assessment
  
• Identification of Idealization Errors
  
• Idealization Error Sources
  
• Idealization Error Treatment

STAGE 1 – DEFINING THE SCOPE

• Introduction
  
• Stage 1.1 – Interpretation of Real World Structure
  
• Stage 1.2 – Problem Overview
  
• Stage 1.3 – Structural Issues
  
• Stage 1.4 – Analysis Approach
  
• Stage 1.5 – Structural Model
  
• Stage 1.6 – Creation of Validation Plan
  
• Stage 1.7 – Review and Approval
  
• SAFESA Classification System for Scope Definition (Stage 1)
  

STAGE 2 – DETAILED ASSESMENT

• Stage 2.1 – Idealization
  
• Stages 2.2 to 2.7 – Detailed Assessment
  
• Stage 2.8 – Validation Review

STAGE 3 – QUALIFICATION CONCLUSIONS

• Introduction
  
• Stage 3.1 – Comparison of Qualification and Allowable Responses
  
• Stage 3.2 – Reporting
  
• Stage 3.3 – Client Approval
  

 
APPENDIX A – Limit State Qualification Criteria

APPENDIX B – Glossary

APPENDIX C – References & Bibliography