PREN 13480-3 : DRAFT 1999

Content
Foreword
1 Scope
2 Normative references
3 Definitions, symbols and units
   3.1 Definitions
   3.2 Symbols and units
4 Basic design criteria
   4.1 General
5 Design stresses
   5.1 General
   5.2 Time-independent nominal design stress
6 Design of piping components under internal
   pressure
   6.1 Straight pipes
   6.2 Pipe bends and elbows
7 Design of ends under internal pressure
   7.1 Dished ends
8 Openings and branch connections
   8.1 General
   8.2 Symbols
9 Design of piping components under external
   pressure
   9.1 General
   9.2 Symbols and elastic stress limits
10 Design for cyclic loading
   10.1 General
   10.2 Exemption from detailed fatigue analysis
   10.3 Fatigue design for cyclic pressure
11 Integral attachments
   11.1 General
12 Analysis and acceptance criteria
   12.1 Basic requirements
13 Supports
   13.1 General requirements
Annex A (informative) Dynamic analysis
      A.1 General
      A.2 Analysis by calculation
      A.3 Alternative means of design verification
Annex B (normative) More accurate calculation of
      bends and elbows
      B.1 General
      B.2 Symbols and units
      B.3 Required wall thickness
      B.4 Calculation
Annex C (informative) Incorporation of expansion
      joints into piping systems
      C.1 General
      C.2 Types of expansion joints
      C.3 Design of expansion joints
      C.4 Designing with expansion joints
      C.5 Analysis and calculation
      C.6 Pre-setting
Annex D (informative) Testing during operation in
      the case of cyclic loading
      D.1 Testing during operation
      D.2 Measures to be taken when the calculated fatigue
          life has been reached
Annex E (informative) Physical properties of steels
      E.1 General
      E.2 Physical properties
Annex F (normative) Flexibility characteristics,
      flexibility and stress intensification factors
      and section moduli
Annex G (normative) Type testing of supports components
Annex H (informative) Attachment of supports to
      structures
      H.1 Attachment of supports to concrete structures
      H.2 Attachment to metallic structures
Annex I (informative) Buckling of linear type supports
      I.1 General
      I.2 Symbols
      I.3 Basic formulae
      I.4 Allowable compressive stress
      I.5 Buckling length
Annex J (informative) Design guidance for structural
      components
      J.1 Linear type components subjected to bending
      J.2 Stability of plate type supports
      J.3 Anchorage plates or equivalent anchorage
          components
Annex K (informative) Production testing or spring
      supports and shock absorbers
      K.1 Constant load supports
      K.2 Variable spring supports
      K.3 Shock absorbers
Annex L (normative) Documentation of supports
Annex ZA (informative) Clauses of this European
      Standard addressing essential requirements or
      other provisions of the PED

This standard defines the requirements for the design and calculation of industrial metallic piping systems, including supports.