ONORM EN 14276-1 : 2011

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
  3.1 Definitions
  3.2 Symbols, quantities and units
4 Materials
  4.1 General
  4.2 Requirements for materials to be used for pressurised
       parts
  4.3 Requirements for materials
  4.4 Requirements for prevention of brittle fracture
  4.5 Material documentation
  4.6 Materials for non-pressure retaining parts
5 Pressure Vessel classification
  5.1 Category of vessel
  5.2 Fluid classification
6 Design
  6.1 General
  6.2 Corrosion and corrosion protection
  6.3 Stress corrosion cracking
  6.4 Loading
  6.5 Maximum allowable pressure PS
  6.6 Design pressure P[d]
  6.7 Calculation pressure P or P[c]
  6.8 Design temperature t[d]
  6.9 Minimum material temperature
  6.10 Calculation temperature t[c]
  6.11 Joint coefficient
  6.12 Design stress
  6.13 Access and inspection openings, venting and draining
       provisions, filling and discharge provisions and
       handling devices
  6.14 Methods for design
7 Manufacturing
  7.1 General
  7.2 Material traceability
  7.3 Manufacturing tolerances
  7.4 Permanent joints
  7.5 Forming of pressure parts
  7.6 Post weld heat treatment
  7.7 Internal cleanness
  7.8 Repairs/Reworks
  7.9 Finishing operations
8 Testing and inspection
  8.1 Performance of inspection and testing
  8.2 Design documentation, review and approval
  8.3 Type approval
  8.4 Calibration
  8.5 Material
  8.6 Manufacturing
  8.7 Non destructive testing
  8.8 Subcontracted elements
  8.9 Final inspection
  8.10 Marking
  8.11 Documentation
Annex A (normative) Alternative requirements for prevention
                       of brittle fracture: Method according to
                       temperature stress cases
Annex B (normative) Specification and approval of brazing
                       procedures, brazers and brazing operators
Annex C (normative) Pressure testing
Annex D (informative) Relations between the different pressures
Annex E (normative) Experimental methods
Annex F (normative) Material characteristics for design
Annex G (informative) Component classification in the sense of
                       the Pressure Equipment Directive (PED)
Annex H (informative) Selection of module of conformity
Annex I (normative) Grouping system for materials
Annex J (informative) DN System
Annex K (normative) Specification and approval of
                       expansion procedures and operators
Annex ZA (informative) Relationship between this European
                       Standard and the Essential
                       Requirements of EU Directive 97/23/EC
Bibliography

Describes the requirements for material, design, manufacturing, testing and documentation for stationary pressure vessels intended for use in refrigerating systems and heat pumps.