SIST EN 13480-3:2012/A1:2018
(Amendment)Metallic industrial piping - Part 3: Design and calculation
Metallic industrial piping - Part 3: Design and calculation
This part of EN 13480 describes the requirements for the design and calculation of industrial metallic piping systems, including supports.
Metallische industrielle Rohrleitungen - Teil 3: Konstruktion und Berechnung
1.1 Zweck dieser EN 13480 ist die Festlegung von Anforderungen an Konstruktion, Herstellung, Verlegung und Prüfung industrieller Rohrleitungen einschließlich Sicherheitseinrichtungen, aus metallenen Werkstoffen (aber zunächst auf Stähle beschränkt), für sichere Betriebsbedingungen. 1.2 Die vorliegende Norm gilt für oberirdische oder in Kanäle verlegte oder erdgedeckte Rohrleitungen aus metallenen Werkstoffen unabhängig vom Druck.
Tuyauteries industrielles métalliques - Partie 3 : Conception et calcul
1.1 L'objectif de EN 13480 est de définir les exigences relatives à la conception, la fabrication, l'installation, le contrôle et l'inspection des réseaux de tuyauteries industrielles, y compris des systèmes de sécurité, réalisés à partir de matériaux métalliques (mais pour l'instant limité aux aciers), dans le but de garantir la sécurité lors de leur utilisation. 1.2 EN 13480 est applicable aux tuyauteries métalliques aériennes, en caniveau ou enterrées, indépendamment de la pression.
Kovinski industrijski cevovodi - 3. del: Konstruiranje in izračun - Dopolnilo A1
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13480-3:2012/A1:2018
01-januar-2018
.RYLQVNLLQGXVWULMVNLFHYRYRGLGHO .RQVWUXLUDQMHLQL]UDþXQ'RSROQLOR$
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 13480-3:2012/A1:2017
ICS:
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
SIST EN 13480-3:2012/A1:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13480-3:2012/A1:2018
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SIST EN 13480-3:2012/A1:2018
EN 13480-3:2012/A1
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2017
EUROPÄISCHE NORM
ICS 23.040.01
English Version
Metallic industrial piping - Part3: Design and calculation
Tuyauteries industrielles métalliques - Partie 3 : Metallische industrielle Rohrleitungen - Teil 3:
Conception et calcul Konstruktion und Berechnung
This amendment A1 modifies the European Standard EN 13480-3:2012; it was approved by CEN on 21 May 2017.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13480-3:2012/A1:2017 E
worldwide for CEN national Members.
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SIST EN 13480-3:2012/A1:2018
EN 13480-3:2012/A1:2017 (E)
Contents Page
European foreword . 4
1 Modifications to Clause 2. 5
2 Modification to Clause 3. 5
3 Modification to 4.1 . 5
4 Modification to 4.2.3.4 . 5
5 Modification to 4.3 . 6
6 Modification to 4.6 . 8
7 Modification to 5.2.2 . 8
8 Modification to 5.2.2.2 . 8
9 Modification to 5.2.5.1 . 8
10 Modification to 5.3.1 . 9
11 Modification to 5.3.2.1 . 9
12 Modification to 6.2.3.2 . 10
13 Modification to 6.3.1 . 10
14 Modification to 6.3.2 . 10
15 Modification to 6.4.1 . 11
16 Modification to 6.4.4 . 11
17 Modification to 6.4.6.2 . 12
18 Modification to 6.4.6.3 . 12
19 Modification to 6.4.7.3 . 13
20 Modification to 6.4.8.3 . 13
21 Modification to 6.6.1 . 13
22 Modification to 6.6.2 . 13
23 Modification to 6.6.3 . 13
24 Modification to 6.6.4 . 14
25 Modification to 7.1.2 . 14
26 Modification to 7.2.3.2 . 14
27 Modification to 7.2.3.3 . 15
28 Modification to 7.2.3.4 . 16
29 Modification to 7.2.4.3 . 16
30 Modification to 7.2.5.2 . 19
31 Modification to 8.3.1 . 19
32 Modification to 8.3.2 . 19
2
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SIST EN 13480-3:2012/A1:2018
EN 13480-3:2012/A1:2017 (E)
33 Modification to 8.3.9 . 19
34 Modification to 8.4.4 . 20
35 Modification to 8.6.1 . 20
36 Modification to 8.6.3 . 21
37 Modification to 10.2 . 21
38 Modification to 10.3.1 . 21
39 Modification to 10.3.2.2 . 21
40 Modification to 10.3.2.3 . 21
41 Modification to 10.5 . 22
42 Modification to 12.1.3.2 . 22
43 Modification to 12.2.2 . 22
44 Modification to 12.2.10.3 . 22
45 Modification to 12.3.1 . 22
46 Modification to 12.3.2 . 22
47 Modification to 12.3.4 . 23
48 Modification to 12.3.6 . 23
49 Modification to 12.3.8 . 23
50 Modification to Clause 13 . 23
51 Modification to Annex C . 43
52 Modification to Annex D . 43
53 Modification to Annex E . 43
54 Modification to Annex I . 43
55 Modification to K.1 . 48
56 Modification to Annex N . 48
57 Modification to Annex P . 49
58 Modification to Annex ZA . 49
59 Modification to Bibliography. 49
3
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SIST EN 13480-3:2012/A1:2018
EN 13480-3:2012/A1:2017 (E)
European foreword
This document (EN 13480-3:2012/A1:2017) 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 December 2017, and conflicting national standards
shall be withdrawn at the latest by December 2017.
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 mandate 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 13480-
3:2012.
This document includes the text of the amendment itself. The amended/corrected pages of EN 13480-
3:2012 will be published in the new Edition 2017 of the European Standard.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
4
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SIST EN 13480-3:2012/A1:2018
EN 13480-3:2012/A1:2017 (E)
1 Modifications to Clause 2
Update the list of normative references as follows:
Replace reference EN 1591-1:2001+A1:2009+AC:2011 by EN 1591-1:2013, Flanges and their joints —
Design rules for gasketed circular flange connections — Part 1: Calculation
Add reference EN 10216-2:2013, Seamless steel tubes for pressure purposes — Technical delivery
conditions — Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties
Delete reference EN 287-1:2004+A2:2006, Qualification test of welders — Fusion welding — Part 1:
Steels
Delete reference EN 12953-3:2002, Shell boilers — Part 3: Design and calculation for pressure parts
Delete reference EN ISO 15614-1:2004, Specification and qualification of welding procedures for metallic
materials — Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and
nickel alloys (ISO 15614-1:2004)
2 Modification to Clause 3
In Table 3.2-1, add the following definition at the top of the table:
Symbol Description Unit
2
P maximum pressure obtained from the design by formulae or relevant MPa (N/mm )
max
procedures for a given component
3 Modification to 4.1
Add the new following text as the last paragraph of 4.1:
“Piping for fluids which are likely to cause condensation shall be installed with adequate slopes and
traps.”
4 Modification to 4.2.3.4
Replace subclause 4.2.3.4 with the following:
“For all pressure temperature conditions (p , t ) specified in 4.2.3.3 calculation pressures p shall be
o o c
determined.
shall be not less than the associated operating pressure p , taking into
The calculation pressure pc o
account the adjustments of the safety devices. The conditions (p , t ) resulting in the greatest wall
o o
thickness shall be considered.
Alternatively, the pressure equipment shall be designed with the pressure/temperature combination
(p , t ) which results in the highest calculated wall thickness or the highest stress, and which is based on
c c
the pressure/temperature combination (p , t ) under normal operating conditions (see EN 764-
o o
1:2015+A1:2016, Figure A.1). In this case the pressure p , associated with the temperature t , can be
c c
lower than PS.
NOTE 1 For guidance, designation of p and t is P and T in EN 764–1:2015+A1:2016, P and T in EN 764–
c c d d D D
1:2015+A1:2016, Figure A.1.
The design of the pressure equipment should be consistent with PS and TS , that is:
max
— compatible with the combination of PS with the temperature T(pomax) where pomax is the maximum
pressure under normal operating conditions;
5
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— compatible with the combination of TS at the pressure P(t ) where t is the maximum
max omax omax
temperature under normal operating conditions.
When the calculation temperature t is such that the creep rupture strength characteristics are relevant
c
for the determination of the nominal design stress, the calculation pressure shall be considered equal to
the operating pressure (p ) which is associated with the corresponding temperature (t ).
o o
If there is a condition where p = PS and t = TS, only this condition has to be calculated.”
o o
5 Modification to 4.3
Replace the first four paragraphs of subclause 4.3 with the following:
“The thickness shall be determined with regard to the manufacturing process for pipes and fittings.
Corrosion can be internal or external or both at the same time (the term corrosion includes erosion).
The value of the corrosion allowance c (which may be zero if no corrosion is to be expected) shall be
0
determined by the manufacturer in accordance with the nature, temperature, pressure, velocity etc. of
the products in contact with the wall, only if all this information has been given by the purchaser.
Corrosion allowance should be given by the purchaser, if not, reasonable values shall be proposed by
the manufacturer and stated in the documentation.
All thicknesses, the corrosion allowance c , the tolerance c and the thinning c are shown in Figures 4.3-
0 1 2
1 and 4.3-2.”
As the 6th paragraph of 4.3, add the new following text:
“Piping which is subjected to external corrosion and is made of materials which are not sufficiently
corrosion resistant shall be protected, if no suitable corrosion allowance is provided.”
In the key, below Figure 4.3-1, replace the explanation of c with the following:
2
c is the thinning allowance for possible thinning during manufacturing process (e.g. due to bending,
2
swaging, threading, grooving, etc);
Replace the title of the Figure 4.3-1 as follows:
Figure 4.3-1 — Thickness (applicable to straight pipes as well as bends) when ordered with
mean wall thickness
After Figure 4.3-1, add a new Figure 4.3-2 and the text below Figure 4.3-2 as follows:
6
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SIST EN 13480-3:2012/A1:2018
EN 13480-3:2012/A1:2017 (E)
key
e is the minimum required thickness without allowances and tolerances to withstand pressure, calculated
by the appropriate equations given in this standard;
c is the corrosion or erosion allowance;
0
c positive tolerance given by the pipe supplier (e.g. see EN 10216-2:2013, Table 9 or Table 10)
1
c is the thinning allowance for possible thinning during manufacturing process (e.g. due to bending,
2
swaging, threading, grooving, etc.);
ε is the additional thickness resulting from the selection of the ordered thickness e ;
ord
e is the ordered thickness (where c is often equal to 0; e.g. straight pipe);
ord 2
e is the nominal thickness (on drawings);
n
eexp is the expected (mean) wall thickness
Figure 4.3-2 — Thickness (applicable to straight pipes as well as bends) when ordered with
minimum wall thickness and plus-tolerances only
Figure 4.3-1 shows the situation when pipes are ordered with mean wall thickness and +/- tolerances,
e.g. see EN 10216-2:2013, Table 7 or Table 8.
For pipes, ordered with minimum wall thickness and plus-tolerances only, see EN 10216-2:2013,
Table 9 or Table 10, the Figure 4.3-2 shall be used. In this case for the flexibility and stress calculation of
piping the expected wall thickness e = e + 1/2 c - c should be used instead of e in the Formulae of
exp ord 1 2 n
Clause 12.
The analysis thickness e shall be the lowest thickness after corrosion and shall be given by:
a
e = e + ε (4.3-1)
a
or
7
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EN 13480-3:2012/A1:2017 (E)
e = e − c − c − c (4.3-2)
a ord 0 1 2
when pipes are ordered with mean wall thickness, see Figure 4.3-1.
When pipes are ordered with minimum wall thickness and plus-tolerances, see Figure 4.3-2, the
analysis thickness e shall be:
a
e = e − c − c (4.3-3)”
a ord 0 2
The sequence of the numbering of the equations shall be updated. The current Formula (4.3-3) shall be
renumbered (4.3-4) and the current Formula (4.3-4) shall be renumbered (4.3-5).
At the end of subclause 4.3, the following NOTE shall be added:
NOTE When pipes are ordered with minimum wall thickness and plus tolerance, see Figure 4.3–2, the value
of the tolerance in Formula (4.3–4) needs to be set to c1 = 0 or in Formula (4.3–5) x = 0.
6 Modification to 4.6
In 4.6, replace the 2nd sentence of the 1st paragraph to read as follows:
“This may be completed or replaced by a “design by analysis” as described in EN 13445-3, Annexes B
and C, where applicable.”
In 4.6, delete the following paragraph:
“Clauses 6, 7, 8, 9, 10 and 11 describe the “design by rules” of piping components under static and cyclic
loadings. The « design by rule » can be completed or replaced by a « design by analysis » as described in
EN 13445-3, Annex B and Annex C, where applicable.”
7 Modification to 5.2.2
At the end of the subclause 5.2.2.1, add the following sentence:
“When different rupture elongation values for longitudinal and transverse directions are provided in
the material standard, the lowest value shall be used.”
8 Modification to 5.2.2.2
Replace subclause 5.2.2.2 with the following:
For A ≥ 35 %, the designer shall ensure that the stress under the proof test conditions, given in
EN 13480-5, shall not exceed the greater of the following values:
— 95 % R at specified test temperature;
p1,0
— 45 % R at specified test temperature.
m
For 30 ≤ A < 35 %, the designer shall ensure that the stress under the proof test conditions, given in
EN 13480-5, shall not exceed 95 % R at specified test temperature.
p1,0
For A < 30 %, the designer shall ensure that the stress under the proof test conditions, given in
EN 13480-5, shall not exceed 95 % R or 95 % R at specified test temperature.
eH p0,2
9 Modification to 5.2.5.1
Add the following sentence fter the first paragraph of 5.2.5.1:
These steels shall be subjected to a positive material identification prior to use, to ensure weldability.
8
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10 Modification to 5.3.1
Replace subclause 5.3.1 with the following:
For welds other than circumferential welds in welded pipes and fittings, the creep strength values of the
weld shall be considered if ensured values are available. Otherwise the minimum of the creep strength
values of either the base material or the filler material reduced by 20 % shall be taken into account.
For circumferential butt welds the necessity of the consideration of reduced creep strength values
depends on the stress distribution in the cross section. Detailed stress analyses may be used.
11 Modification to 5.3.2.1
Replace subclause 5.3.2.1 with the following:
5.3.2.1 Design conditions
The design stress in the creep range f to be used for design under static loading shall be:
cr
S
RTt
(5.3.2-1)
f =
cr
Sf
cr
where
Sf is a safety factor which depends on the design life time and shall be in accordance with
cr
Table 5.3.2-1.
Table 5.3.2–1 — Safety factor as a function of mean creep rupture strength related to time
a) c)
Design lifetime Without surveillance of creep With surveillance of creep exhaustion
c)
exhaustion
Mechanical Mechanical
t [h] Sfcr Sfcr
property property
10 000 ≤ t ≤ 100 000 S 1,5 S 1,25
RTt RTt
d) d)
100 000 < t < 200 000 S 1,5 S 1,25
RTt RTt
S 1,25
RT 200 000 h
d) d) b)
t = 200 000 S 1,5 S 1,35
RTt RT 150 000 h
b)
S 1,5
RT 100 000 h
a)
If the design lifetime is not specified, the mean creep rupture strength at 200 000 h shall be used with the associated
Sf .
cr
b)
Only in cases where the 200 000 h values are not specified in the material standards, the mean creep rupture
strength at 150 000 h or 100 000 h shall be used for a design lifetime of 200 000 h with the associated Sfcr.
c)
Surveillance by means of non-destructive testing and/or additional calculations of creep damage, Dc.
S
RT 200000h
d)
Allowed only if ≥ 0,781 to ensure that 60 % of theoretical creep damage are not exceeded at 200 000 h.
S
RT 100000h
The creep rupture strength associated to the specified lifetime shall be interpolated based on a
logarithmic time axis as well as a logarithmic stress axis (double logarithmic interpolation scheme).
9
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12 Modification to 6.2.3.2
Delete the existing subclause 6.2.3.2 “Alternative route”, renumber the current subclause 6.2.3.3 “More
accurate route” as 6.2.3.2 and modify Table 6.2.3-1 as follows:
Table 6.2.3–1 — Minimum pipe wall thickness before bending by induction
Radius Normal route 6.2.3.1
10 Do 1,02 e
8 D 1,03 e
o
6 D 1,04 e
o
5 D 1,04 e
o
4 D 1,05 e
o
3 D 1,06 e
o
2,5 D 1,08 e
o
2 D 1,10 e
o
1,5 D 1,15 e
o
13 Modification to 6.3.1
Replace subclause 6.3.1 with the following:
6.3.1 General
The following rules for mitre bends (see Figure 6.3.2-1) shall only be used if the following conditions
are met:
A mitre bend with an angle of change in direction at a single joint greater than 22,5 ° (see angle α in
Figure 6.3.2-1) shall not be used under cyclic loadings (>7 000 cycles).
In addition, for time dependent design stress, consideration of high temperature cycling should be
given.
For an angle of change in direction of 3 ° or less at a single joint, the calculation method given in 6.1 may
be used.
14 Modification to 6.3.2
Replace Figure 6.3.2-1 with the following:
10
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EN 13480-3:2012/A1:2017 (E)
NOTE α = 2 θ
Figure 6.3.2–1 — Scheme for a mitre bend
15 Modification to 6.4.1
Replace the first indent in subclause 6.4.1 with the following:
— cones for which the half angle at the apex of the cone is greater than 60°;
16 Modification to 6.4.4
Replace Formula (6.4.4-1) with the following:
pD 1
ci
“e = (6.4.4-1)”
con
2fz −p cosα
c
Replace Formula (6.4.4-2) with the following:
pD
1
ce
“e = (6.4.4-2)
con
2fz + p cosα
c
where
D and D are the inner or outer diameter respectively at the point under consideration.”
i e
Replace Formula (6.4.4-3) with the following:
“For a given geometry:
2 f ze cosα
con
P = (6.4.4-3)
max
D
m
where
11
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EN 13480-3:2012/A1:2017 (E)
D is the mean diameter at the point under consideration.”
m
Replace Formula (6.4.4-7) with the following:
“where
D= De− −2r 1−cosα −l sinα (6.4.4-7)
( )
K c 1 2
i
For r see Figure 6.4.2-2.”
i
17 Modification to 6.4.6.2
Replace Figure 6.4.6-1 with the following:
Figure 6.4.6-1 — Values of coefficient β for cone/cylinder intersection without knuckle
18 Modification to 6.4.6.3
In indent a), replace Formula (6.4.6-3) with the following:
a) apply Formula (6.4.6-3) to cylinder;
2 f ze
a
P = (6.4.6-3)
max
D
c
12
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EN 13480-3:2012/A1:2017 (E)
19 Modification to 6.4.7.3
In indent f), replace Formula (6.4.7-5) with the following:
2feγ
j
P = (6.4.7-5)
max
β D
c
20 Modification to 6.4.8.3
Replace Formula (6.4.8-6) with the following:
2 f ze
1a
(6.4.8-6)
P =
max
D β
cH
21 Modification to 6.6.1
Replace the second paragraph of Clause 6.6.1 with the following:
If there is a specific requirement on tightness for the flange connection, this shall be calculated in
accordance with EN 1591-1 and EN 1591-2. Recommended gaskets are specified in Annex P.
Replace the second sentence of the fourth paragraph of Clause 6.6.1 with the following:
The selection of bolting shall comply with Annex D and EN 1515-4.
At the end of Clause 6.6.1, add a fifth paragraph as follows:
Annex P gives information on applicability of gaskets (pressure, temperature, chemical compatibility,
etc.).
22 Modification to 6.6.2
Replace Table 6.6.2-1 with the following:
Table 6.6.2–1 — Additional symbols for the purposes of 6.6
Description Unit
Symbol
2
P Equivalent design pressure MPa (N/mm )
eq
2
P Internal calculation pressure MPa (N/mm )
F Pulling axial force (to be a positive value in equation) N
M External bending moment N mm
G Diameter of gasket load reaction mm
C Diameter of bolt circle mm
23 Modification to 6.6.3
In indent b), replace Formula (6.6.2-1) with the following:
16 M
4F
PP=+ + (6.6.2-1)
eq
2 2
ππG CG
Below the Formula (6.6.2-1), delete the following sentence:
“where:
13
--
...
SLOVENSKI STANDARD
SIST EN 13480-3:2012/oprA1:2016
01-september-2016
.RYLQVNLLQGXVWULMVNLFHYRYRGLGHO .RQVWUXLUDQMHLQL]UDþXQ'RSROQLOR$
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 13480-3:2012/prA1
ICS:
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
SIST EN 13480-3:2012/oprA1:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13480-3:2012/oprA1:2016
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SIST EN 13480-3:2012/oprA1:2016
DRAFT
EUROPEAN STANDARD
EN 13480-3:2012
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
July 2016
ICS 23.040.01
English Version
Metallic industrial piping - Part3: Design and calculation
Tuyauteries industrielles métalliques - Partie 3 : Metallische industrielle Rohrleitungen - Teil 3:
Conception et calcul Konstruktion und Berechnung
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 267.
This draft amendment A1, if approved, will modify the European Standard EN 13480-3:2012. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13480-3:2012/prA1:2016 E
worldwide for CEN national Members.
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SIST EN 13480-3:2012/oprA1:2016
EN 13480-3:2012/prA1:2016 (E)
Contents Page
European foreword . 4
1 Modifications to Clause 2. 5
2 Modification to Clause 3. 5
3 Modification to 4.1 . 5
4 Modification to 4.2.3.4 . 5
5 Modification to 4.3 . 6
6 Modification to 4.6 . 8
7 Modification to 5.2.2 . 8
8 Modification to 5.2.2.2 . 8
9 Modification to 5.2.5.1 . 8
10 Modification to 5.3.1 . 9
11 Modification to 5.3.2.1 . 9
12 Modification to 6.2.3.2 . 10
13 Modification to 6.3.1 . 10
14 Modification to 6.3.2 . 11
15 Modification to 6.4.1 . 11
16 Modification to 6.4.4 . 11
17 Modification to 6.4.6.2 . 12
18 Modification to 6.4.6.3 . 13
19 Modification to 6.4.7.3 . 13
20 Modification to 6.4.8.3 . 13
21 Modification to 6.6.1 . 13
22 Modification to 6.6.2 . 13
23 Modification to 6.6.3 . 14
24 Modification to 6.6.4 . 14
25 Modification to 7.1.2 . 14
26 Modification to 7.2.3.2 . 15
27 Modification to 7.2.3.3 . 15
28 Modification to 7.2.4.3 . 16
29 Modification to 7.2.5.2 . 19
30 Modification to 8.3.1 . 19
31 Modification to 8.3.2 . 19
2
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32 Modification to 8.3.9 . 19
33 Modification to 8.4.4 . 20
34 Modification to 8.6.1 . 20
35 Modification to 8.6.3 . 21
36 Modification to 10.2 . 21
37 Modification to 10.3.1 . 21
38 Modification to 10.3.2.2 . 21
39 Modification to 10.3.2.3 . 21
40 Modification to 10.5 . 22
41 Modification to 12.1.3.2 . 22
42 Modification to 12.2.2 . 22
43 Modification to 12.2.10.3 . 22
44 Modification to 12.3.1 . 22
45 Modification to 12.3.2 . 23
46 Modification to 12.3.4 . 23
47 Modification to 12.3.6 . 23
48 Modification to 12.3.8 . 23
49 Modification to Clause 13 . 24
13 Pipe Supports . 24
50 Modification to Annex C . 44
51 Modification to Annex D . 44
52 Modification to Annex E . 44
53 Modification to Clause I.3 . 44
54 Modification to Clause K.1 . 49
55 Modification to Annex N . 49
56 Modification to Annex P . 51
57 Modification to Annex ZA . 51
58 Modification to Bibliography. 51
3
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SIST EN 13480-3:2012/oprA1:2016
EN 13480-3:2012/prA1:2016 (E)
European foreword
This document (EN 13480-3:2012/prA1:2016) has been prepared by Technical Committee CEN/TC 267
“Industrial piping and pipelines”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a mandate 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 13480-
3:2012.
This document includes the text of the amendment itself. The amended/corrected pages of
EN 13480-3:2012 will be published in the new Edition 2017 of the European Standard.
4
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SIST EN 13480-3:2012/oprA1:2016
EN 13480-3:2012/prA1:2016 (E)
1 Modifications to Clause 2
The list of normative references shall be updated as follows:
Replace reference EN 1591-1:2001+A1:2009+AC:2011 by EN 1591-1:2013, Flanges and their joints —
Design rules for gasketed circular flange connections — Part 1: Calculation
Add reference EN 10216-2:2013, Seamless steel tubes for pressure purposes — Technical delivery
conditions — Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties
Delete reference EN 12953-3:2002, Shell boilers — Part 3: Design and calculation for pressure parts
2 Modification to Clause 3
In Table 3.2-1, add the following definition at the top of the table:
Symbol Description Unit
P maximum pressure obtained from the design by formulae or relevant MPa (N/mm²)
max
procedures for a given component
3 Modification to 4.1
As the last paragraph of 4.1, add the new following text:
Piping for fluids which are likely to cause condensation shall be installed with adequate slopes and
traps.
4 Modification to 4.2.3.4
The sub-clause 4.2.3.4 shall read as follows:
For all pressure temperature conditions (p , t ) specified in 4.2.3.3 calculation pressures p shall be
o o c
determined.
The calculation pressure p shall be not less than the associated operating pressure p , taking into
c o
account the adjustments of the safety devices. The conditions (p , t ) resulting in the greatest wall
o o
thickness shall be considered.
The pressure equipment may be designed with a design pressure/temperature combination (p , t )
c c
which results in the highest calculated wall thickness or the highest stress, and which is based on the
, t ) under normal operating conditions (see EN 764-1:2015,
pressure/temperature combination (po o
Figure A.1). In this case the design pressure p , associated with the design temperature t , can be lower
c c
than PS.
NOTE 1 For guidance, designation of p and t is p and t in EN 764-1:2015, Figure A.1.
c c d d
The design of the pressure equipment should be consistent with PS and TS , that is:
max
— compatible with the combination of PS with the temperature T(p ) where p is the maximum
omax omax
pressure under normal operating conditions;
— compatible with the combination of TS at the pressure P(t ) where t is the maximum
max omax omax
temperature under normal operating conditions.
5
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NOTE 2 If there is a condition where p = PS and t =TS, only this condition has to be calculated.
o o
When the calculation temperature t is such that the creep rupture strength characteristics are relevant
c
for the determination of the nominal design stress, the calculation pressure shall be considered equal to
the operating pressure (p ) which is associated with the corresponding temperature (t ).
o o
5 Modification to 4.3
The sub-clause 4.3 shall read as follows:
The minimum thickness shall be determined with regard to the manufacturing process for pipes and
fittings.
Corrosion can be internal or external or both at the same time (the term corrosion includes erosion).
The value of the corrosion allowance c (which may be zero if no corrosion is to be expected) shall be
0
determined by the manufacturer in accordance with the nature, temperature, pressure, velocity etc. of
the products in contact with the wall, only if all this information has been given by the purchaser.
Corrosion allowance should be given by the purchaser, if not, reasonable values shall be proposed by
the manufacturer and stated in the documentation.
All thicknesses, the corrosion allowance c , the tolerance c and the thinning c are shown in Figures 4.3-
0 1 2
1 and 4.3-2.
th
As the 6 paragraph of 4.3, add the new following text:
Piping which is subjected to external corrosive influences and is made of materials which are not
sufficiently corrosion resistant shall be protected against corrosion, if no suitable corrosion allowance is
provided.
In the key, below Figure 4.3-1, c shall read as follows:
2
c is the thinning allowance for possible thinning during manufacturing process (e.g. due to bending,
2
swaging, threading, grooving, etc);
The title of the Figure 4.3-1 shall read as follows:
Figure 4.3-1 — Thickness (applicable to straight pipes as well as bends) when ordered with
mean wall thickness
After Figure 4.3-1, add a new Figure 4.3-2 and the text below Figure 4.3-2 shall read as follows:
6
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Where
e see Figure 4.3-1;
c see Figure 4.3-1;
0
c positive tolerance given by the pipe supplier, see also EN 10216-2:2013, Table 9 or Table 10;
1
c see Figure 4.3-1;
2
ε is the additional thickness resulting from the selection of the ordered thickness e ;
ord
e see Figure 4.3-1;
ord
e see Figure 4.3-1;
n
e is the expected (mean) wall thickness.
exp
Figure 4.3-2 — Thickness (applicable to straight pipes as well as bends) when ordered with
minimum wall thickness and plus‐tolerances only
The Figure 4.3‐1 shows the situation when pipes are ordered with mean wall thickness and +/‐
tolerances, see also EN 10216‐2:2013, Table 7 or Table 8.
For pipes, ordered with minimum wall thickness and plus‐tolerances only, see Table 9 or Table 10 in
EN 10216‐2:2013, the Figure 4.3‐2 shall be used. In this case for the flexibility and stress calculation of
piping the expected wall thickness e = e + ½ c should be used instead of e in the Equations of
exp ord 1 n
Clause 12.
The analysis thickness e shall be the lowest thickness after corrosion and shall be given by:
a
ε = ε + ε (4.3-1)
a
or
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EN 13480-3:2012/prA1:2016 (E)
ε = ε − c − c − c (4.3-2)
a ord 0 1 2
when pipes are ordered with mean wall thickness, see Figure 4.3‐1.
When pipes are ordered with minimum wall thickness and plus‐tolerances, see Figure 4.3‐2, the
analysis thickness e shall be:
a
ε = ε − c − c (4.3-3)
a ord 0 2
The sequence of the numbering of the equations shall be updated. The current equation (4.3-3) shall be
renumbered (4.3-4) and the current equation (4.3-4) shall be renumbered (4.3-5).
At the end of sub-clause 4.3, the following NOTE shall be added:
NOTE When pipes are ordered with minimum wall thickness and plus tolerance, see Figure 4.3-2, the
value of the tolerance in Equation (4.3-4) needs to be set to c = 0 or in Equation (4.3-5) x = 0.
1
6 Modification to 4.6
nd st
In 4.6, the 2 sentence of the 1 paragraph shall read as follows:
This may be completed or replaced by a "design by analysis" as described in EN 13445-3, Annexes B
and C, where applicable.
In 4.6, the following paragraph shall be deleted:
Clauses 6, 7, 8, 9, 10 and 11 describe the "design by rules" of piping components under static and cyclic
loadings. The « design by rule » can be completed or replaced by a « design by analysis » as described in
EN 13445-3, Annex B and Annex C, where applicable.
7 Modification to 5.2.2
At the end of the sub-clause 5.2.2.1, add the following sentence:
When different rupture elongation values for longitudinal and transverse directions are provided in the
material standard, the lowest value shall be used.
8 Modification to 5.2.2.2
The sub-clause 5.2.2.2 shall read as follows:
For A ≥ 35 %, the designer shall ensure that the stress under the proof test conditions, given in
EN 13480-5, shall not exceed the greater of the two following values:
— 95 % R at specified test temperature;
p1,0
— 45 % R at specified test temperature.
m
For A < 35 %, see 5.2.1.2.
9 Modification to 5.2.5.1
After the first paragraph of 5.2.5.1, the following sentence shall be added:
8
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These steels shall be subjected to a positive material inspection prior to use, to ensure weldability.
10 Modification to 5.3.1
The sub-clause 5.3.1 shall read as follows:
For welds other than circumferential welds in welded pipes and fittings, the creep strength values of the
weld shall be considered if ensured values are available. Otherwise the minimum of either the creep
strength values of the base material or the filler material shall be reduced by 20 %.
For circumferential butt welds the necessity of the consideration of reduced creep strength values
depends on the stress distribution in the cross section. Detailed stress analyses may be used.
11 Modification to 5.3.2.1
The sub-clause 5.3.2.1 shall read as follows:
5.3.2.1 Design conditions
The design stress in the creep range f to be used for design under static loading shall be:
cr
S
RTt
f = (5.3.2-1)
cr
Sf
cr
where
S f is a safety factor which depends on the design life time and shall be in accordance with
cr
Table 5.3.2-1.
Table 5.3.2-1 — Safety factor as a function of mean creep rupture strength related to time
a)
Design lifetime Without surveillance of creep With surveillance of creep
c) c)
exhaustion exhaustion
Mechanical Mechanical
t [h] Sfcr Sfcr
property property
10 000 ≤ t ≤ 100 000 S 1,5 S 1,25
RTt RTt
d) d)
100 000 < t < 200 000 S 1,5 S 1,25
RTt RTt
S /200 000 h 1,25
RT
d) d) b)
t = 200 000 S 1,5 S /150 000 h 1,35
RTt RT
b)
S /100 000 h 1,5
RT
a)
If the design lifetime is not specified, the mean creep rupture strength at 200 000 h shaII be used with the
associated Sf .
cr
b)
Only in cases where the 200 000 h values are not specified in the material standards, the mean creep rupture
strength at 150 000 h or 100 000 h shall be used for a design lifetime of 200 000 h with the associated Sf .
cr
c)
Surveillance by means of non-destructive testing and/or additional calculations of creep damage, D .
c
S
RT /200000h
d)
Allowed only if ≥ 0,781 to ensure that 60% of theoretical creep damage are not exceeded at
S
RT /100000h
200 000 h.
In cases where a design life shorter than 100 000 h is specified, one of the following methods shall be
used:
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a) If lifetime monitoring is not performed, the safety factor Sf shall be equal to 1,5 and shall be
cr
applied to the mean creep rupture strength at the design lifetime of at least 10 000 h;
b) If lifetime monitoring is performed, a safety factor of Sf = 1,25 may be specified with regard to the
cr
mean creep rupture strength at the design lifetime of at least 10 000 h. In no case the 1% creep
strain limit (mean value) at design lifetime shall be exceeded.
The creep rupture strength associated to the specified lifetime shall be interpolated based on a
logarithmic time axis as well as a logarithmic stress axis (double logarithmic interpolation scheme).
12 Modification to 6.2.3.2
The existing sub-clause 6.2.3.2 "Alternative route" shall be deleted, the current sub-clause 6.2.3.3 "More
accurate route" shall be renumbered 6.2.3.2 and the Table 6.2.3-1 shall be modified as follows:
Table 6.2.3-1 — Minimum pipe wall thickness before bending by induction
Radius Normal route 6.2.3.1
10 D 1,02 e
o
8 D 1,03 e
o
6 D 1,04 e
o
5 Do 1,04 e
4 D 1,05 e
o
3 D 1,06 e
o
2,5 D 1,08 e
o
2 D 1,10 e
o
1,5 D 1,15 e
o
13 Modification to 6.3.1
The sub-clause 6.3.1 shall read as follows:
6.3.1 General
The following rules for mitre bends (see Figure 6.3.2-1) shall only be used if the following conditions
are met:
A mitre bend with an angle of change in direction at a single joint greater than 22,5 ° (see angle α in
Figure 6.3.2-1) shall not be used under cyclic loadings (> 7 000 cycles).
In addition, for time dependent design stress, consideration of high temperature cycling should be given.
NOTE For an angle of change in direction of 3 ° or less at a single joint, the calculation method given in 6.1
may be used.
10
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14 Modification to 6.3.2
The revised Figure 6.3.2-1 shall read as follows:
NOTE α = 2 θ
Figure 6.3.2-1 — Scheme for a mitre bend
15 Modification to 6.4.1
The first indent of sub-clause 6.4.1 shall read as follows:
— cones for which the half angle at the apex of the cone is greater than 60°;
16 Modification to 6.4.4
Equation (6.4.4-1) shall read as follows:
pD
1
ci
e = (6.4.4-1)
con
2fz −p cosα
c
Equation (6.4.4-2) shall read as follows:
pD 1
ce
e = (6.4.4-2)
con
2fz + p cosα
c
where D and D are the inner or outer diameter respectively at the point under consideration.
i e
Equation (6.4.4-3) shall read as follows:
For a given geometry:
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EN 13480-3:2012/prA1:2016 (E)
2 f ze cosα
con
P = (6.4.4-3)
max
D
m
where D is the mean diameter at the point under consideration.
m
Equation (6.4.4-7) shall read as follows:
where
(6.4.4-7)
D= De− −2r (1−cosα ) −l sinα
K c 1 2
i
For r see Figure 6.4.2-2.
i
17 Modification to 6.4.6.2
The revised Figure 6.4.6-1 shall read as follows:
Figure 6.4.6-1 — Values of coefficient β for cone/cylinder intersection without knuckle
12
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18 Modification to 6.4.6.3
In indent a), Equation (6.4.6-3) shall read as follows:
a) apply equation (6.4.6-3) to cylinder;
2 f ze
a
P = (6.4.6-3)
max
D
c
19 Modification to 6.4.7.3
In indent f), Equation (6.4.7-5) shall read as follows:
2feγ
j
P = (6.4.7-5)
max
β D
c
20 Modification to 6.4.8.3
Equation (6.4.8-6) shall read as follows:
2 f ze
1a
(6.4.8-6)
P =
max
D β
cH
21 Modification to 6.6.1
The second paragraph of clause 6.6.1 shall read as follows:
If there is a specific requirement on tightness for the flange connection, this shall be calculated in
accordance with EN 1591-1 and EN 1591-2. Recommended gaskets are specified in Annex P.
The second sentence of the fourth paragraph of clause 6.6.1 shall read as follows:
The selection of bolting shall comply with Annex D and EN 1515-4.
At the end of clause 6.6.1, add a fifth paragraph as follows:
Annex P gives information on gasket limitation (pressure, temperature, chemical compatibility, etc.).
22 Modification to 6.6.2
The revised Table 6.6.2-1 shall read as follows:
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Table 6.6.2-1 — Additional symbols for the purposes of 6.6
Symbol Description Unit
2
P Equivalent design pressure MPa (N/mm )
eq
2
P Internal calculation pressure MPa (N/mm )
F Pulling axial force (to be a positive value in equation) N
M External bending moment N mm
G Diameter of gasket load reaction mm
C Diameter of bolt circle mm
23 Modification to 6.6.3
In indent b), the Equation (6.6.2-1) shall read as follows:
16 M
4F
PP=+ + (6.6.2-1)
eq
2 2
ππG CG
Below the Equation (6.6.2-1), delete the following sentence:
Where:
G is the diameter of circle on which applies the compression load of the gasket (normally the mean
diameter of the gasket).
24 Modification to 6.6.4
The first paragraph of clause 6.6.4 shall read as follows:
If a non-standard flange is used, the design shall be done by applying the calculation method in
EN 1591-1, or by applying the algorithm shown in the Taylor-Forge method (Annex D).
25 Modification to 7.1.2
The revised Figure 7.1.2-1 (a) shall read as follows:
a) External chamfer b) Internal chamfer
Figure 7.1.2-1 — Hemispherical ends
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26 Modification to 7.2.3.2
In sub-clause 7.2.3.2, Equation (7.2.3-4) shall read as
...
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