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

Specifies minimum requirements concerning material, design, construction and workmanship, procedure and test at manufacture of transportable refillable brazed steel liquefied petroleum gas (LPG) cylinders of water capacity from 0,5 l up to and including 15 l. The limit of 15 l is related to manufacturing process available.