BS EN 13445-3 : 2014

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
   designstress 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.