EN 13445-3:2014/prA16

SLOVENSKI STANDARD
01-november-2019
Neogrevane (nekurjene) tlačne posode - 3. del: Konstruiranje - Dopolnilo A16
Unfired pressure vessels - Part 3: Design
Unbefeuerte Druckbehälter - Teil 3: Konstruktion
Récipients sous pression non soumis à la flamme - Partie 3 : Conception
Ta slovenski standard je istoveten z: EN 13445-3:2014/prA16
ICS:
23.020.32 Tlačne posode Pressure vessels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 13445-3:2014
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA16
October 2019
ICS 23.020.30
English Version
Unfired pressure vessels - Part 3: Design
Récipients sous pression non soumis à la flamme - Unbefeuerte Druckbehälter - Teil 3: Konstruktion
Partie 3 : Conception
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 54.

This draft amendment A16, if approved, will modify the European Standard EN 13445-3:2014. If this draft becomes an
amendment, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
inclusion of this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13445-3:2014/prA16:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Modification to 7.6.5, Junctions - general . 4
2 Modification to Clause 16, Additional non-pressure loads . 4
3 Modifications to 16.6.2, Additional specific symbols and abbreviations . 4
4 Modifications to 16.6.8, Single line loads (see Figures 16.6-2 and 16.6-3) . 4
5 Modification to 16.7.5, Load limits for shell . 5
6 Modification to 16.10.1, General . 5
7 Modifications to 16.10.2, Additional specific symbols and abbreviations (see Figure
16.10-1) . 5
8 Modification to 16.10.3, Conditions of applicability. 11
9 Modifications to 16.10.4, Applied forces . 11
10 Modifications to 16.10.5, Load limits of the shell . 16
11 Addition of a new Subclause 16.10.6, Support brackets . 24
12 Addition of a new Subclause 16.10.7, Design of welds . 28
13 Modifications to 16.12.5.4.2, General condition of applicability for the types . 30
14 Modifications to 16.12.5.4.3, Checks for type 1 – Simple bearing plate . 30
15 Modifications to 16.12.5.4.4.1, Checks for the bearing plate . 31
16 Modification to 16.12.5.4.4.2, Checks for the gussets . 32
17 Modifications to 16.12.5.4.4.3, Checks of the skirt at gussets . 32
18 Modification to 16.12.5.4.5.1, Check for the bearing plate . 32
19 Modifications to 16.12.5.4.5.2, Check for top plates . 32
20 Modifications to 16.12.5.4.5.5, Checks for type 4 – Bearing plate with top ring plate . 33
21 Modifications to 16.12.5.4.5.6, Check of the skirt at top ring plate . 34
22 Addition of a new Subclause 16.15, Global loads on conical shells and conical
transitions without knuckles . 35
23 Modifications to Annex L - Basis for design rules related to additional non-pressure
loads . 41

European foreword
This document (EN 13445-3:2014/prA16:2019) has been prepared by Technical Committee CEN/TC 54
“Unfired pressure vessels”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a standardization request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of
EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of EN 13445-
3:2014.
1 Modification to 7.6.5, Junctions - general
Add the following NOTE:
“
NOTE If this requirement for the distance to another cone/cylinder junction is not fulfilled a conical shell and
conical transition without knuckles can be designed according to 16.15.”.
2 Modification to Clause 16, Additional non-pressure loads
Replace “Equation (***)” with “Formula (***)” and “Equations (***)” with “Formulae (***)”.
3 Modifications to 16.6.2, Additional specific symbols and abbreviations
Add the following definitions:
“
F is the resulting force due to the constant radial line load acting on a shell (see Figures 16.6.-2
L
and 16.6-3), F > 0 radial outwards, F < 0 radial inwards;
L L
M is the resulting moment due to the variable radial line load acting on a shell (see Figures 16.6-
L
2 and 16.6-3);”.
Replace the definition of υ with the following one:
“
υ is the ratio between local membrane stress and absolute value of local bending stress;”.
4 Modifications to 16.6.8, Single line loads (see Figures 16.6-2 and 16.6-3)
Amend Formula (16.6-14) as follows:
“
υλmin 0,08⋅ ;,0 20 for F > 0 and all values of M (16.6-14a)
L L
( )
υλ=−⋅min 0,08 ;,0 20 for F < 0 (16.6-14b)”.
L
( )
1 1
Amend Formula (16.6-18) as follows:
“
for F > 0 and all values of M (16.6-18a)
υλmin 0,08⋅ ;,0 30 L L
( )
υλ=−⋅min 0,08 ;,0 30 for FL < 0 (16.6-18b)”.
( )
1 1
Amend the last sentence in step 4) as follows:
=
=
“
with bending limit stress σ from 16.6.6 with υ and υ for F and with υ and the absolute value of
b,all 1 2 L,max 1
|υ | for M .”.
2 L,max
5 Modification to 16.7.5, Load limits for shell
Amend step 4) as follows:
“
4) With the appropriate value of λ, and the absolute values of |υ | and |υ |, calculate the bending
1 2
limit stress from 16.6.6, Formula (16.6-6);”.
6 Modification to 16.10.1, General
Replace Subclause 16.10.1 with the following one:
“
This clause gives rules for the design of vertical cylindrical shells supported by brackets.
Rules for the design of the support brackets are given in 16.10.6. Four types of bracket are considered,
as shown in Figure 16.10-1. Rules for the design of vertical vessels with legs located on the dished end
are given in 16.11. The design of support legs is not included.”.
7 Modifications to 16.10.2, Additional specific symbols and abbreviations
(see Figure 16.10-1)
Replace Subclause 16.10.2 with the following one:
“
16.10.2 Additional specific symbols and abbreviations
The following symbols and abbreviation are in addition to those in Clause 4.
A is the cross-section area of bracket or reinforcing plate attachment weld;
w
a is the eccentricity of normal force in gusset plate (see Figure 16.10-10);
e
a is the eccentricity of applied load in gusset plate (see Figure 16.10-10);
s
a is the distance from centre of vertical force to shell or reinforcing plate (see Figure 16.10-1);
a is the distance from centre of resultant horizontal force to shell or reinforcing plate (see
Figure 16.10-7);
a is the distance from centre of vertical force to shell or reinforcing plate, measured along
centre-line of gusset plate (see Figure 16.10-10);
b is the width of idealized rectangular gusset plate (see Figure 16.10-10);
s
b is the width of bearing plate (see Figure 16.10-1);
b is the width of reinforcing plate (see Figure 16.10-1);
b is the height of reinforcing plate (see Figure 16.10-1);
b is the distance between centres of gusset plates (see Figure 16.10-1);
b is the bolt centre-to-centre distance for type A, B or C brackets with one gusset plate or type D
brackets;
D is the equivalent calculation diameter (see 16.6.3);
eq
D is the cylindrical shell inside diameter;
i
d is the diameter of bolt holes;
h
E is the modulus of elasticity of gusset plate;
e is the analysis thickness of shell;
a
e is the nominal thickness of shell;
n
e is the analysis thickness of gusset plate (see Figure 16.10-1);
s
e is the analysis thickness of bearing plate (see Figure 16.10-1);
e is the analysis thickness of reinforcing plate (see Figure 16.10-1)
F is the global axial force defined in Table 22–1 as vertical force F for the different load
V
condition status, positive when acting downwards; F is the sum of F and F ;
1 2
F is the global axial force acting on the part of the vessel above underside of bearing plates,
positive when acting downwards;
F is the global axial force acting on the part of the vessel below underside of bearing plates,
positive when acting downwards; this force will normally include the weight of the vessel
contents;
F is the preloading force on one anchor bolt;
A
F is the largest bolt force on one anchor bolt due to global axial force F and global moment M ;
B A
F is the global horizontal force defined in Table 22–1 as lateral force F for the different load
H H
condition status;
F is the radial horizontal force acting at base of support bracket i, positive when acting inwards;
Hi
F is the maximum allowable radial horizontal force at base of support bracket;
Hi,max
F is the resultant horizontal force acting at base of support bracket i;
Hi,R
F is the maximum allowable resultant horizontal force at base of support bracket;
Hi,R,max
F is the tangential horizontal force acting at base of support bracket i;
Hi,T
F is the maximum allowable tangential horizontal force at base of support bracket;
Hi,T,max
F is the normal force acting on gusset plate (see Figure 16.10-10);
Ns
F is the maximum allowable normal force acting on gusset plate;
Ns,max
F is the upward vertical force acting on support bracket i;
Vi
f is the nominal design stress for gusset plate as defined in Table 5.3.2.4-1 depending on load
s
condition;
f is the nominal design stress for bearing plate as defined in Table 5.3.2.4-1 depending on load
condition;
f is the nominal design stress for reinforcing plate as defined in Table 5.3.2.4-1 depending on
load condition;
f is the yield strength for gusset plate;
y
h is the vertical distance from neutral axis of support bracket to underside of bearing plate or
base of leg (see Figure 16.10-2 and Figure 16.10-6);
h is the vertical distance from underside of bearing plate to base of leg (see Figure 16.10-2);
A
h is the vertical distance from underside of bearing plate to location of horizontal neutral axis of
S
bracket joint to shell or reinforcing plate (see Figure 16.10-2);
h is the height of support bracket (see Figure 16.10-1);
h is the depth of support bracket measured from outside of shell or reinforcing plate (see Figure
16.10-1);
h is the width of contact between bearing plate and support structure (see Figure 16.10-9);
h is the horizontal distance from outside of shell or reinforcing plate to inner edge of gusset
plate at attachment to bearing plate (see Figure 16.10-10);
h is the horizontal distance from outside of shell or reinforcing plate to outer edge of gusset
plate at attachment to bearing plate (see Figure 16.10-10);
h is the horizontal distance from inner edge of gusset plate to centre-line of idealized
rectangular gusset plate at attachment to bearing plate (see Figure 16.10-10);
I is the second moment of area of cross-section of each leg abou
...