ONORM EN 12952-5 : 2011

Foreword
1 Scope
2 Normative references
3 Definitions
4 Symbols and abbreviations
5 General
6 Pressure parts
   6.1 Drums, headers and similar pressure parts
   6.2 Material identification
   6.3 Material marking
   6.4 Marking during manufacture
7 Cutting, forming and fabrication tolerances
   7.1 Cutting of material
   7.2 Forming of drums, headers and ends
   7.3 Forming of tube bends
   7.4 Drum and header fabrication tolerances
8 Welding
   8.1 Design and other requirements specific to welding
   8.2 Welding consumables
   8.3 Welding approvals
   8.4 General production requirements for welding
   8.5 Repairs to welds
   8.6 Pre-heating
   8.7 Post-weld heat treatment
   8.8 Welding subsequent to final post-weld heat treatment
   8.9 Welded joints, connections and production test
        plates
   8.10 Attachment of non-pressure parts to drums and
        headers by welding
   8.11 Welding of tubes
   8.12 Flash butt welding of tubes
   8.13 Welded tube water walls
   8.14 Arc stud welding
9 Mechanical connections
   9.1 General
   9.2 Access openings
   9.3 Branches and nozzles mechanically connected to
       the main pressure parts
   9.4 Tube connections
   9.5 The connection of non-pressure parts to pressure parts
10 Thermal treatment
   10.1 General
   10.2 Heating cycles and heat treatment(s) associated
        with plate forming operations
   10.3 Pre-heating for welding and thermal cutting
   10.4 Post-weld heat treatment
   10.5 Heat treatment of production test plates
Annex A (normative) Tube bending procedure tests
        A.1 General
        A.2 Hot or cold formed bends in tubes with
            outside diameter less than or equal to 142 mm
        A.3 Cold formed bends in tubes with outside
            diameter > 142 mm
        A.4 Hot formed bends in tubes with outside
            diameter > 142 mm
Annex B (informative) Welded pressure connections and
        non-pressure containing attachments
Annex C (normative) Manufacture of welded tubewalls
        C.1 General
        C.2 Methods of manufacture
        C.3 Allowable materials
        C.4 Manufacturing processes and controls
        C.5 Welding procedure approvals
        C.6 Production tests
        C.7 Non destructive examination (NDE)
Annex D (normative) Coiled boilers and coiled superheaters
        D.1 General
        D.2 Special requirements
Annex E (normative) Chemical recovery boilers
        E.1 General
        E.2 Definition
        E.3 Special requirements for forming of composite
            tube bends
        E.4 Special requirements for manufacture of
            welded tube walls from composite tubes
        E.5 Material marking
        E.6 Flash butt welding
Annex F (informative) Guidelines for the determination of
        the competency of boiler manufacturers
        F.1 General
        F.2 Responsibility of the user
        F.3 Responsibility of the manufacturer
        F.4 Requirements concerning manufacturer's competency
        F.5 Manufacturer's competency declaration
Annex ZA (informative) Clauses of this European Standard
         addressing essential safety requirements or other
         provisions of the Pressure Equipment Directive
Bibliography

Gives requirements for the workmanship and construction of water-tube boilers as defined in EN 12952-1.