EN 13445-3:2014/A4:2018

European foreword
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Basic design criteria
6 Maximum allowed values of the nominal design
   stress for pressure parts
7 Shells under internal pressure
8 Shells under external pressure
9 Openings in shells
10 Flat ends
11 Flanges
12 Bolted domed ends
13 Heat Exchanger Tubesheets
14 Expansion bellows
15 Pressure vessels of rectangular section
16 Additional non-pressure loads
17 Simplified assessment of fatigue life
18 Detailed assessment of fatigue life
19 Creep design
20 Design rules for reinforced flat walls
21 Circular flat ends with radial reinforcement ribs
22 Static analysis of tall vertical vessels on skirts
Annex A (normative) - Design requirements for pressure
        bearing welds
Annex B (normative) - Design by Analysis - Direct Route
Annex C (normative) - Design by analysis - Method based
        on stress categories
Annex D (informative) - Verification of the shape of vessels
        subject to external pressure
Annex E (normative) - Procedure for calculating the departure
        from the true circle of cylinders and cones
Annex F (normative) - Allowable external pressure for vessels
        outside circularity tolerance
Annex G (normative) - Alternative design rules for flanges and
        gasketed flange connections
Annex GA (informative) - Alternative design rules for flanges and
         gasketed flange connections
Annex H (informative) - Gasket factors m and y
Annex I (informative) - Additional information on heat exchanger
        tubesheet design
Annex J (normative) - Alternative method for the design of heat
        exchanger tubesheets
Annex K (informative) - Additional information on expansion
        bellows design
Annex L (informative) - Basis for design rules related to additional
        non-pressure loads
Annex M (informative) - In service monitoring of vessels operating
        in fatigue or creep service
Annex N (informative) - Bibliography to Clause 18
Annex O (informative) - Physical properties of steels
Annex P (normative) - Classification of weld details to be assessed
        using principal stresses
Annex Q (normative) - Simplified procedure for the fatigue assessment
        of unwelded zones
Annex R (informative) - Coefficients for creep-rupture model equations
        for extrapolation of creeprupture strength
Annex S (informative) - Extrapolation of the nominal design stress
        based on timeindependent behaviour in the creep range
Annex T (normative) - Design by experimental methods
Annex Y (informative) - History of EN 13445-3
Annex ZA (informative) - Relationship between this European Standard
         and the Essential Requirements of Directive 2014/68/EU
         aimed to be covered

Defines requirements for the design of unfired pressure vessels covered by EN 13445-1:2014 and constructed of steels in accordance with EN 13445-2:2014.