NBN EN 12807 : 2009

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions and symbols
   3.1 Terms and definitions
   3.2 Symbols
4 Materials
5 Design
   5.1 General requirements
   5.2 Calculation of cylinder shell thickness
   5.3 Design of ends concave to pressure
   5.4 Ends of other shapes
   5.5 Minimum wall thickness
   5.6 Design of openings
6 Construction and workmanship
   6.1 Brazing qualification
   6.2 Pressure retaining parts
   6.3 Brazed joints
   6.4 Tolerances
   6.5 Non-pressure-containing attachments
   6.6 Valve protection
   6.7 Protection of openings
   6.8 Heat treatment
   6.9 Protective coating
7 Testing and examination
   7.1 Mechanical testing
   7.2 Burst test under hydraulic pressure
   7.3 Pressure test
   7.4 Ultrasonic and macro examination
   7.5 Visual examination of the joint
   7.6 Fatigue test
8 Acceptance procedure
   8.1 General
   8.2 Batch testing
   8.3 Failure to meet batch test requirements
9 Technical requirements for type approval
10 Marking
11 Certificate
Annex A (normative) Manufacturers marking