NEN EN 1251-2 : 2000 C1 2006

Foreword
1 Scope
2 Normative references
3 Definitions and symbols
      3.1 Definitions
      3.2 Symbols
4 Design
      4.1 Design validation options
      4.2 Common design requirements
      4.3 Design validation by calculation
      4.3 Design validation by experimental method
5 Fabrication
      5.1 General
      5.2 Cutting
      5.3 Cold forming
      5.4 Hot forming
      5.5 Manufacturing tolerances
      5.6 Welding
      5.7 Non-welded joints
6 Inspection and testing
      6.1 Quality
      6.2 Production control test plates
      6.3 Non-destructive testing
      6.4 Rectification
      6.5 Pressure testing
Annex A (normative) Elastic stress analysis
      A.1 - General
      A.2 - Terminology
      A.3 - Limit for longitudinal compressive general
            membrane stress
      A.4 - Stress categories and stress limits for general
            application
      A.5 - Specific criteria, stress categories and stress
            limits for limited application
Annex B (informative) Recommended weld details
      B.1 - Scope
      B.2 - Weld detail
      B.3 - Oxygen service requirements
Annex C (normative) Additional requirements for flammable
                    fluids
Annex D (normative) Outer jacket relief devices
      D.1 - Scope
      D.2 - Definitions
      D.3 - Requirements
Bibliography

Applies to the design, fabrication, testing and inspection of transportable vacuum insulated cryogenic vessels that do not exceed 1000 litres volume, and are intended for a maximum allowable pressure that is greater than atmospheric.