NEN EN ISO 11439 : 2013
Current
The latest, up-to-date edition.
GAS CYLINDERS - HIGH PRESSURE CYLINDERS FOR THE ON-BOARD STORAGE OF NATURAL GAS AS A FUEL FOR AUTOMOTIVE VEHICLES
01-12-2013
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Service conditions
5 Approval and certification
6 Requirements for type CNG-1 metal cylinders
7 Requirements for type CNG-2 hoop-wrapped cylinders
8 Requirements for type CNG-3 fully-wrapped cylinders
9 Requirements for type CNG-4 all-composite cylinders
10 Marking
11 Preparation for dispatch
Annex A (normative) Test methods and criteria
Annex B (normative) Ultrasonic inspection
Annex C (informative) Approval and certification procedures
Annex D (informative) NDE defect size by flawed cylinder
cycling
Annex E (informative) Report forms
Annex F (informative) Environmental test
Annex G (informative) Verification of stress ratios using
strain gauges
Annex H (informative) Manufacturer's instructions for
handling, use and inspection of
cylinders
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