EN 12952-3:2011

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 General
6 Calculation temperature and nominal
   design stress
7 Cylindrical shells of drums and headers
   under internal pressure
8 Openings and branches in cylindrical
   shells of drums and headers and integral
   tubes
9 Headers and plain tubes of rectangular
   section
10 Ends and spherical shells
11 Tubes
12 Pressure parts of irregular shape
13 Fatigue
Annex A (normative) - Calculation of tube bends
        and elbows
Annex B (normative) - Fatigue cracking -
        Design to allow for fluctuating stress
Annex C (informative) - Examples of calculating
        the effects of fatigue
Annex D (informative) - Physical properties of
        steels
Annex E (informative) - Significant technical
        changes between this European Standard
        and the previous edition
Annex ZA (informative) - Clauses of this
         European Standard addressing essential
         safety requirements of the Pressure
         Equipment Directive 97/23/EC
Bibliography

This European Standard specifies the requirements for the design and calculation of water-tube boilers as defined in EN 12952-1.The purpose of this European Standard is to ensure that the hazards associated with water-tube boilers are reduced to a minimum by the proper application of the design according to this part of EN 12952.