UNI EN 1968 : 2007

Foreword
Introduction
1 Scope
2 Normative references
3 Intervals between periodic inspection and test
4 List of procedures for periodic inspection and test
5 Identification of cylinder and preparation for
   inspection and test
6 External visual inspection
7 Internal visual inspection
8 Supplementary tests
9 Inspection of cylinder neck
10 Pressure test or ultrasonic test
11 Inspection of valve
12 Final operations
13 Rejection and rendering cylinder unserviceable
Annex A (informative) Gas cylinders manufactured according to
        National Regulations
Annex B (normative) Inspection periods
Annex C (normative) Description, evaluation of defects and
        conditions for rejection of seamless steel gas
        cylinders at time of visual inspection
Annex D (normative) Procedure to be adopted when a cylinder
        valve is suspected to be obstructed
Annex E (normative) Proof pressure test of gas cylinders
Annex F (normative) Volumetric expansion testing of gas cylinders
Annex G (normative) Ultrasonic test
Annex H (informative) Inspection and maintenance of valves
        and their connections: recommended procedures
Annex I (informative) List of commonly used gases corrosive
        to cylinder material
Bibliography

Describes the requirements for periodic inspection and testing of seamless steel transportable gas cylinders (single or those from bundles) intended for compressed and liquefied gases under pressure, of water capacity from 0,5 l up to 150 l.