SIST EN 13480-3:2018/A5:2023

SLOVENSKI STANDARD
01-november-2023
Kovinski industrijski cevovodi - 3. del: Konstruiranje in izračun - Dopolnilo A5
Metallic industrial piping - Part 3: Design and calculation
Metallische industrielle Rohrleitungen - Teil 3: Konstruktion und Berechnung
Tuyauteries industrielles métalliques - Partie 3: Conception et calcul
Ta slovenski standard je istoveten z: EN 13480-3:2017/A5:2022
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13480-3:2017/A5
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 23.040.01
English Version
Metallic industrial piping - Part 3: Design and calculation
Tuyauteries industrielles métalliques - Partie 3: Metallische industrielle Rohrleitungen - Teil 3:
Conception et calcul Konstruktion und Berechnung
This amendment A5 modifies the European Standard 2429052; it was approved by CEN on 28 November 2022.

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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This amendment exists 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, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13480-3:2017/A5:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Modification to Clause 2, “Normative references” . 4
2 Modification to 3.2, “Symbols and units” . 4
3 Modification to 4.5, “Joint coefficient” . 6
4 Modification to 6.1, “Straight pipes” . 6
5 Modification to 6.4.2, “Specific definitions” . 6
6 Modification to 6.4.6.2, “Design” . 6
7 Modification to 6.4.7.2, “Design” . 7
8 Modification to 6.4.9, “Offset reducers” . 7
9 Modification to 8.3.2, “Openings in the vicinity of discontinuities” . 7
10 Modification to 8.4.3, “Reinforced openings with d /D < 0,8” . 8
i i
11 Modification to 9.1, “General” . 9
12 Modification to 9.2.1, “Symbols” .11
13 Modification to 9.2.2, “Elastic stress limits” .12
14 Modification to 9.3.2, “Interstiffener collapse” .13
15 Modification to 9.3.3, “Overall collapse of stiffened pipes” .14
16 Modification to 11.2, “Allowable stresses” .14
17 Modification to 11.6, “Stress analysis of the run pipe” .15
18 Modification to 13.11.2, “Design temperatures for support components” .17
19 Modification to 13.11.4, “Determination of component sizes” .18
20 Modification to 13.11.5, “Welded connections” .19
21 Modification to 13.11.6, “Threaded connections” .21

European foreword
This document (EN 13480-3:2017/A5:2022) has been prepared by Technical Committee CEN/TC 267
“Industrial piping and pipelines”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2023 and conflicting national standards shall be
withdrawn at the latest by June 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
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) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of EN 13480-3:2017.
This document includes the text of the amendment itself. The amended/corrected pages of
EN 13480-3:2017 will be published in the new edition of the European Standard.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: 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, Türkiye and the United
Kingdom.
1 Modification to Clause 2, “Normative references”
Add the following normative reference:
“EN 1993-1-8:2005, Eurocode 3: Design of steel structures — Part 1-8: Design of joints”.
2 Modification to 3.2, “Symbols and units”
Table 3.2-1 shall read as follows:
“Table 3.2–1 — General symbols and units
Symbol Description Unit
A elongation at rupture %
E modulus of elasticity MPa
(N/mm )
P maximum pressure obtained from the design by formulae or relevant MPa
max
procedures for a given component (N/mm )
a
PS maximum allowable pressure bar
b
R, r radii mm
R minimum specified value of upper yield strength at room temperature MPa
eH
(N/mm )
c
R minimum specified value of upper yield strength at calculation temperature t MPa
eH t
(N/mm )
R minimum specified value of tensile strength at room temperature MPa
m
(N/mm )
c
R minimum specified value of tensile strength at calculation temperature t MPa
m t
(N/mm )
R minimum specified value of 0,2 % proof strength at room temperature MPa
p0,2
(N/mm )
c
R minimum specified value of 0,2 % proof strength at calculation temperature t MPa
p0,2 t
(N/mm )
R minimum specified value of 1,0 % proof strength at room temperature MPa
p1,0
(N/mm )
c
R minimum specified value of 1,0 % proof strength at calculation temperature t MPa
p1,0 t
(N/mm )
S mean value of the stress which leads to a 1 % creep elongation in 100 000 h MPa
(N/mm )
S mean value of the stress which leads to a 1 % creep elongation in 200 000 h MPa
(N/mm )
S Mean value of creep rupture strength according to the material standards, for MPa
R T t
material temperature t, and lifetime T (in hours) under consideration whereby (N/mm )
the scatter band does not deviate by more than ± 20 % from the mean value.
T time h
t temperature °C
Symbol Description Unit
TS maximum allowable temperature °C
Z section modulus for a pipe mm
c corrosion or erosion allowance (see Figure 4.3–1) mm
c absolute value of the negative tolerance taken from the material standard mm
(see Figure 4.3–1)
c thinning allowance for possible thinning during manufacturing process mm
(see Figure 4.3–1)
e analysis thickness of a component used for the check of the strength mm
a
(see Figure 4.3–1)
e nominal thickness on drawings (see Figure 4.3–1) mm
n
e ordered thickness (see Figure 4.3–1) mm
ord
e minimum required thickness with allowances and tolerances (see mm
r
Figure 4.3–1)
f design stress (see Clause 5) MPa
(N/mm )
f Design stress in the creep range MPa
cr
(N/mm )
Design stress for flexibility analysis MPa
f
f
(N/mm )
p calculation pressure (see 4.2.3.4) MPa
c
(N/mm )
p operating pressure (see 4.2.3.1) MPa
o
(N/mm )
t calculation temperature (see 4.2.3.5) °C
c
t operating temperature (see 4.2.3.2) °C
o
z joint coefficient (see 4.5) -
ε additional thickness resulting from the selection of the ordered thickness (see mm
Figure 4.3–1)
a 2
All pressures for calculation purposes are in MPa (N/mm ) and PS is in bar.
b
The following subscripts apply:
i inside
m mean
o outside
c
When t is greater than the room temperature.
”.
3 Modification to 4.5, “Joint coefficient”
At the end of 4.5, the NOTE shall read as follows:
NOTE See EN 13480-5:2017, Table 8.3-1. Where the standard defining the technical conditions of delivery of a
welded product gives the appropriate requirements concerning destructive and non-destructive tests (e.g.
EN 10217 series), the joint coefficient for the wall thickness calculation can be taken equal to z = 1,0.
4 Modification to 6.1, “Straight pipes”
In 6.1, Formulae (6).1-1) and (6.1-2) shall read as follows:
“
— where D /D ≤ 1,7:
o i
pD
co
(6.1-1)
e=
2 fz+ p
c
or
pD
ci
(6.1-2)
e=
2 fz− p
c
”.
5 Modification to 6.4.2, “Specific definitions”
Figure 6.4.2-2 shall be modified as follows:
“
Figure 6.4.2-2 — Geometry of cone/cylinder intersection with knuckle – Large end”.
6 Modification to 6.4.6.2, “Design”
The 5th paragraph of 6.4.6.2 shall read as follows:
“The required thickness e of the cone adjacent to the junction is the greater of e and e . This thickness
2 con
j
shall be maintained for a distance of at least 1,4l from the junction along the cone, see Figure 6.4.2-1.”.
7 Modification to 6.4.7.2, “Design”
The 6th paragraph of 6.4.7.2 shall read as follows:
“The required thickness e of the knuckle and the cone adjacent to the junction is the greater of e and
2 con
e . This thickness shall be maintained for a distance of at least 1,4l from the junction and 0,7l from the
j 2 2
cone/knuckle tangent line along the cone, see Figure 6.4.2-2.”.
8 Modification to 6.4.9, “Offset reducers”
The 5th sentence of 6.4.9 shall read as follows:
“The greater of these shall apply to the cone section of the reducer.”.
9 Modification to 8.3.2, “Openings in the vicinity of discontinuities”
Indent b) of 8.3.2 shall read as follows:
“
b) Openings in conical shells connected to cylindrical shells shall have the distances x and x shown in
L S
Figure 8.3.2-2 as follows:
— for the large end

De
mL as
x ≥ max 0,2 ; 3,0 e (8.3.2-3)

L as

cosα

— for the small end
 
D e
mS as
x ≥ max ; 3,0 e (8.3.2-4)
 
S as
 
cosα
 
where
D is the mean diameter of cylindrical shell at the large end;

mL
D is the mean diameter of cylindrical shell at the small end.

mS
”.
Figure 8.3.2-2 — Opening in a conical shell
10 Modification to 8.4.3, “Reinforced openings with d /D < 0,8”
i i
After Formula (8).4.3-2), the following sentence shall be added:
“d is the equivalent diameter of the branch at the intersection calculated according to
eqb
Formulae (8).4.1-3) and (8.4.1-4) using the dimensions of the branch instead of the shell.”.
Indent c), 2nd paragraph of subclause 8.4.3, Formula (8).4.3-8) shall be deleted, new Figure 8.4.3-3 shall be
inserted, and the paragraph shall read as follows:
“Formulae (8).4.3-3) or (8.4.3-6) and (8.4.3-7) shall apply.
The maximum length of the shell considered as contributing to reinforcement shall be evaluated in
accordance with the Formula (8).4.1-2) and for the branches in accordance with Formulae (8).4.3-1) and
(8.4.3-2).
Figure 8.4.3-3 — Reinforcement of oblique branch connection in cylindrical or conical shell”.
nd rd
Indent d), 2 and 3 paragraph of subclause 8.4.3 shall read as follows:
“The reinforcement shall be calculated in accordance with Formulae (8).4.3-3), (8.4.3-6) and (8.4.3-7).
The maximum length of the shell considered as contributing to reinforcement shall be evaluated in
ac
...