Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Gases
4.1 Classification
4.2 Test gases
5 Test pressures
6 Classification of appliances
6.1 Appliance categories
6.1.1 General
6.1.2 Category I
6.1.3 Category II
6.1.4 Category III
6.2 Operations permitted for a change of gas or pressure,
adjustment and regulating devices
7 Choice of test gases and test pressures
8 Marking
Annex A (normative) Conditions for preparation of the test
gases
Annex B (informative) National situations
B.1 General
B.2 Categories listed in the body of the standard marketed
in the different countries
B.3 Appliance supply pressures corresponding to the
categories given in B.1 and B.2
B.4 Special categories marketed nationally or locally
B.5 Test gases and test pressures corresponding to the
special categories given in B.4
B.6 Special conditions
Annex C (informative) Guidelines for extension to other
categories
Annex D (informative) National situation of countries whose
national bodies are CEN affiliate members
D.1 General
D.2 Categories listed in the body of the standard and
marketed in the different countries
Bibliography