PREN 521 : DRAFT 2016

European foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Safety requirements
6 Test methods
7 Marking
8 Instructions for use, maintenance and assembly
Annex A (normative) - Characteristics of test vessels
Annex B (normative) - Tests on needle valves
Annex C (informative) - Examples of authorized
        solutions
Annex ZA (informative) - Relationship between this
         European standard and the essential requirements
         of Directive 2009/142/EC aimed to be covered
Bibliography

Describes the construction and performance characteristics related to safety and the rational use of energy of portable appliances burning liquefied petroleum gases at the vapour pressure within the gas container.