EN 14398-2:2003+A2:2008

Foreword
1 Scope
2 Normative references
3 Terms, definitions and symbols
  3.1 Terms and definitions
  3.2 Symbols
4 Design
  4.1 Design options
      4.1.1 General
      4.1.2 Design by calculation
      4.1.3 Design by calculation and pressure strengthening
      4.1.4 Design by calculation supplemented with experimental
            methods
  4.2 Common design requirements
      4.2.1 General
      4.2.2 Design specification
      4.2.3 Design loads
      4.2.4 Fatigue
      4.2.5 Corrosion allowance
      4.2.6 Inspection openings
      4.2.7 Pressure relief
      4.2.8 Valves
      4.2.9 Insulation
      4.2.10 Degree of filling
      4.2.11 Electrical continuity
  4.3 Design by calculation
      4.3.1 General
      4.3.2 Vessel
      4.3.3 Attachments
      4.3.4 Piping and accessories
      4.3.5 Calculation formulae
      4.3.6 Calculations for operating loads
5 Fabrication
  5.1 General
  5.2 Cutting
  5.3 Cold forming
      5.3.1 Austenitic stainless steel
      5.3.2 Ferritic steel
  5.4 Hot forming
      5.4.1 General
      5.4.2 Austenitic stainless steel
      5.4.3 Ferritic steel
  5.5 Manufacturing tolerances
      5.5.1 Plate alignment
      5.5.2 Thickness
      5.5.3 Dished ends
      5.5.4 Cylinders
  5.6 Welding
      5.6.1 General
      5.6.2 Qualification
      5.6.3 Temporary attachments
      5.6.4 Welded joints
  5.7 Non-welded joints
6 Inspection and testing
  6.1 Quality plan
      6.1.1 Inspection stages during manufacture of a vessel
      6.1.2 Additional inspection stages during manufacture of
            a large transportable cryogenic vessel
  6.2 Production control test plates
      6.2.1 Requirements
      6.2.2 Extent of testing
  6.3 Non-destructive testing
      6.3.1 General
      6.3.2 Extent of examination for surface imperfections
      6.3.3 Extent of examination for volumetric imperfections
      6.3.4 Acceptance levels
  6.4 Rectification
  6.5 Pressure testing
Annex A (informative) Elastic stress analysis
      A.1 General
      A.2 Terminology
          A.2.1 Stress intensity
          A.2.2 Gross structural discontinuity
          A.2.3 Local structural discontinuity
          A.2.4 Normal stress
          A.2.5 Shear stress
          A.2.6 Membrane stress
          A.2.7 Primary stress
          A.2.8 Primary local membrane stress
          A.2.9 Secondary stress
          A.2.10 Peak stress
      A.3 Limit for longitudinal compressive general membrane stress
      A.4 Stress categories and stress limits for general application
          A.4.1 General
          A.4.2 General primary membrane stress category
          A.4.3 Local primary membrane stress category
          A.4.4 General or local primary membrane plus primary
                bending stress category
          A.4.5 Primary plus secondary stress category
          A.4.6 Thermal stress
      A.5 Specific criteria, stress categories and stress limits
          for limited application
          A.5.1 General
          A.5.2 Attachments and supports
          A.5.3 Nozzles and openings
          A.5.4 Additional stress limits
Annex B (normative) Additional requirements for 9 % Ni steel
      B.1 Introduction
      B.2 Specific requirements
Annex C (normative) Pressure strengthening of vessels from
        austenitic stainless steels
      C.1 Introduction
      C.2 Scope
      C.3 Definitions and units of measurement
      C.4 Materials
      C.5 Design
          C.5.1 General
          C.5.2 Design for internal pressure
      C.6 Manufacturing and inspection
          C.6.1 Strengthening procedure
          C.6.2 Procedure record
          C.6.3 Welding
          C.6.4 Pressure vessel drawing
          C.6.5 Data plate
      C.7 Comments
          C.7.1 Strengthening theory
          C.7.2 Work-hardened material
          C.7.3 Derivation of formulae
          C.7.4 Deformations at strengthening
Annex D (informative) Specific weld details
      D.1 Field of application
      D.2 Weld detail
          D.2.1 Joggle joint
          D.2.2 Intermediate ends
          D.2.3 Backing strip
          D.2.4 End plate closure
          D.2.5 Non full penetration nozzle weld
          D.2.6 Non continuous fillet weld on attachments
      D.3 Oxygen service requirements
Annex E (normative) Increased material property for austenitic
        stainless steel
Bibliography

This European Standard specifies requirements for the design, fabrication, inspection and testing of large transportable non vacuum insulated cryogenic vessels of more than 1000 l volume, which are permanently (fixed tanks) or not permanently (demountable tanks) attached to a vehicle, for carriage by road. However, it can be used for other mode of transport providing the specific regulations/requirements are complied with.This European Standard applies to large transportable non vacuum insulated cryogenic vessels for fluids specified in EN 14398-1 and does not apply to vessels designed for toxic fluids.This European Standard does not include the general vehicle requirements e.g. running gear, brakes, lighting etc. that shall be in accordance with the relevant standards/regulations.