SIST EN 13480-3:2002/A5:2012

SLOVENSKI STANDARD
SIST EN 13480-3:2002/kFprA5:2011
01-september-2011
.RYLQVNLLQGXVWULMVNLFHYRYRGLGHO.RQVWUXLUDQMHLQL]UDþXQ
Metallic industrial piping - Part 3: Design and calculation
Industrielle metallische Rohrleitungen - Teil 3: Konstruktion und Berechnung
Tuyauteries industrielles métalliques - Partie 3: Conception et calcul
Ta slovenski standard je istoveten z: EN 13480-3:2002/FprA5
ICS:
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
SIST EN 13480-3:2002/kFprA5:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 13480-3:2002/kFprA5:2011

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SIST EN 13480-3:2002/kFprA5:2011


EUROPEAN STANDARD
FINAL DRAFT
EN 13480-3:2002
NORME EUROPÉENNE

EUROPÄISCHE NORM
FprA5
June 2011
ICS 23.040.01
English Version
Metallic industrial piping - Part 3: Design and calculation
Tuyauteries industrielles métalliques - Partie 3: Conception Industrielle metallische Rohrleitungen - Teil 3: Konstruktion
et calcul und Berechnung
This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee
CEN/TC 267.

This draft amendment A5, if approved, will modify the European Standard EN 13480-3:2002. 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland 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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13480-3:2002/FprA5:2011: E
worldwide for CEN national Members.

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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)
Contents Page
Foreword .5
1 Modification to Clause 2 .6
2 Modification to 3.2 .6
3 Modification to 4.1 .6
4 Modification to 4.2.3.3 .6
5 Modification to 4.2.3.4 .7
6 Modification to 4.2.5 .7
7 Modification to 4.6 .7
8 Modification to 5.2.2.1 .7
9 Modification to 5.3.2.1 .7
10 Modification to 6.4.2.1 .8
11 Modification to 6.4.5 .9
12 Modification to 6.4.6.1 . 10
13 Modification to 6.4.7.2 . 10
14 Modification to 6.4.8.1 . 10
15 Modification to 6.4.10 . 10
16 Modification to 6.6 . 11
17 Modification to 7.1.3 . 13
18 Modification to 7.2.3.3 . 13
19 Modification to 7.2.3.4 . 13
20 Modification to 8.1 . 13
21 Modification to 8.3.5 . 14
22 Modification to 8.3.8 . 15
23 Modification to 8.4.3 . 16
24 Modification to 9.3.2 . 19
25 Modification to 9.3.3 . 20
26 Modification to 9.3.4 . 20
27 Modification to 10.3.2.6 . 20
28 Modification to Clause 11 . 21
11 Integral attachments . 21
29 Modification to 12.1.3 . 32
30 Modification to 12.2.4.2 . 32
31 Modification to 12.2.5 . 32
32 Modification to 12.2.6 . 33
2

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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)
33 Modification to 12.2.8 . 33
34 Modification to 12.3.1 . 34
35 Modification to 12.3.2 . 34
36 Modification to 12.3.3 . 34
37 Modification to 12.3.4 . 34
38 Modification to 12.3.5 . 35
39 Modification to 12.5 . 35
40 Modification to 13.1.1 . 35
41 Modification to 13.1.2 . 36
42 Modification to 13.1.3 . 36
43 Modification to 13.1.5.1 . 39
44 Modification to 13.1.5.3 . 39
45 Modification to 13.3.1 . 40
46 Modification to 13.3.3.3 . 41
47 Modification to 13.3.3.6 . 41
48 Modification to 13.3.3.7 . 41
49 Modification to 13.3.3.9 . 41
50 Modification to 13.3.5 . 41
51 Modification to 13.3.6 . 41
52 Modification to 13.4.1 . 43
53 Modification to 13.5.1.2 . 44
54 Modification to 13.5.1.3 . 44
55 Modification to 13.5.1.6 . 44
56 Modification to 13.5.2.2 . 44
57 Modification to 13.5.2.3 . 44
58 Modification to 13.5.3 . 45
59 Modification to 13.5.4 . 45
60 Modification to 13.5.4.1 . 45
61 Modification to Annex A . 45
62 Modification to Annex B . 45
63 Modification to C.1.6 . 48
64 Modification to Clause D.3. 49
65 Modification to D.4.2 . 49
66 Modification to D.4.3 . 49
67 Modification to D.5.3 . 49
68 Modification to G.2.1 . 49
69 Modification to Annex H . 49
70 Modification to Clause I.3 . 53
71 Modification to Clause J.1 . 58
3

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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)
72 Modification to Clause J.4 . 58
73 Modification to Annex L . 58
Annex L (informative)  Buckling of linear type supports . 59
74 Modification to Annex M . 63
75 Modification to Annex N . 64
76 Modification to Annex O . 64
77 Modification to Clause P.1 . 76
78 Modification to P.3.1 . 76
79 Modification to Clause Q.1 . 76
80 Modification to Q.2.1 . 76
81 Modification to Q.2.3 . 76
82 Modification to Clause Q.4 . 76
83 Modification to Q.7.2 . 76
84 Modification to Q.8.1 . 77
85 Modification to Q.9.1 . 77
86 Modification to Annex ZA . 77
87 Modification to Bibliography . 77

4

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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)
Foreword
This document (EN 13480-3:2002/FprA5:2011) 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 Unique Acceptance Procedure.
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 this document.
5

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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)
1 Modification to Clause 2
Add the following normative references:
EN 1515-2:2001, Flanges and their joints - Bolting - Part 2: Classification of bolt materials for steel flanges, PN
designated
EN 1515-3:2005, Flanges and their joints - Bolting - Part 3: Classification of bolt materials for steel flanges,
class designated
EN 1515-4:2010, Flanges and their joints - Bolting - Part 4: Selection of bolting for equipment subject to the
Pressure Equipment Directive 97/23/EC
2 Modification to 3.2
Add the following line in the Table 3.2-1 "General symbols and units" between the symbols f and p :
cr c
Design stress for flexibility analysis MPa (N/mm²)
f
f
3 Modification to 4.1
In sub-clause 4.1, in the first sentence, replace "cold spring" by "cold pull". The sentence shall read as follows:
The calculation rules in this document shall apply for operating and testing conditions as well as preset, cold
pull conditions, flushing and cleaning conditions.
4 Modification to 4.2.3.3
The sub-clause 4.2.3.3 shall read as follows:
The set (p , t ) to be considered for the dimensioning of the elements of a piping system shall correspond to
o o
the most severe conditions of pressure and temperature which prevail simultaneously over a long time in the
piping section under consideration. Thus for the thickness calculation of a component, the simultaneous
conditions of pressure and temperature to be considered are the conditions which lead to the greatest
thickness.
For all piping system elements, an allowable maximum pressure, based on
a) specified material (mechanical properties),
b) a given temperature,
can be easily determined by taking into account the applicable safety factors.
Temporary deviations e.g. due to pressure surge or operation of control release valve (safety valve) shall not
be taken into account if the calculated stresses from such variations do not exceed the allowable stress by
more than 10 % for less than 10 % of any 24 h operating period.
6

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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)
5 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 account
c o
the adjustments of the safety devices. The conditions (p , t ) resulting in the greatest wall thickness shall be
o o
considered with both of the following minimum conditions:
1) p = p = PS with the associated t as defined in 4.2.3.5;
c o c
2) t as defined in 4.2.3.5 for t = TS with the associated p = p .
c o c o
NOTE 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 for the
c
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
6 Modification to 4.2.5
In sub-clauses 4.2.5.1, 4.2.5.2.3 and 4.2.5.4, the indent "cold spring" shall read as follows:
— cold pull.
7 Modification to 4.6
In the first paragraph, a second sentence shall be added and shall read as follows:
This may be completed or replaced by a "design by analysis" as described in EN 13445-3, Annex B and
Annex C.
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.
8 Modification to 5.2.2.1
In this sub-clause, the first indent shall read as follows:
— for A ≥ 35 %
and the second indent shall read as follows:
— for 35 % > A ≥ 30 %
9 Modification to 5.3.2.1
After the Table 5.3.2-1, the text shall read as follows:
If the design lifetime is not specified, the mean creep rupture strength at 200 000 h shaII be used.
7

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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)
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.
If a design lifetime between 100 000 h and 200 000 h is specified, and a lifetime monitoring system is
provided, divergent from Table 5.3.2-1, a safety factor SF = 1,25 may be used.
CR
In cases where design Iifetimes shorter than 100 000 h are specified, one of the following methods shall be
used:
a) If a lifetime monitoring System is not provided, the safety factor SF shall be equal to 1,5 and shall be
CR
applied to the mean creep rupture strength at the relevant lifetime of at least 10 000 h;
b) If a lifetime monitoring system is provided, a safety factor of SF = 1,25 may be specified with regard to
CR
the mean creep rupture strength at the relevant lifetime of at least 10 000 h. In no case shall the 1 %
creep strain limit (mean value) at 100 000 h 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).
10 Modification to 6.4.2.1
Replace Figures 6.4.2-1 and 6.4.2-2 as follows:
8

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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)

Figure 6.4.2-1 – Geometry of cone/cylinder intersection without knuckle – Large end

Figure 6.4.2-2 — Geometry of cone/cylinder intersection with knuckle – Large end
11 Modification to 6.4.5
After the equation (6.4.5-2), add the following text:
The length of the cone can be reduced to less than 2l if both of the following conditions are fulfilled:
2

 the wall thickness e , calculated in accordance with 6.4.6 or 6.4.7, is existent along the whole length of
2
the cone;
 the junction at the small end of the cone is sufficiently dimensioned according to 6.4.8.
9

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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)
12 Modification to 6.4.6.1
The indent 2) shall read as follows:
2) the weld at the junction shall be subject to 100 % non-destructive examination, either by radiography or
ultrasonic techniques, unless the design is such that the thickness at the weld exceeds 1,4e, in which case
j
the normal rules for the relevant design shall be applied.
13 Modification to 6.4.7.2
After equation (6.4.7-1), correct equation (6.4.7-2) as follows:
0,028r
α
i
ρ = (6.4.7-2)
D e 1+ 1/ cosα
c j
14 Modification to 6.4.8.1
Replace Figure 6.4.8.1-1 as follows:

Figure 6.4.8.1-1 — Geometry of cone/cylinder intersection: small end
15 Modification to 6.4.10
After equation (6.4.10-4), add a new equation (6.4.10-5) as follows:
e {e ;e }          (6.4.10-5)
r=max cyl j
With e according to 6.1 and e according to equation (6.4.7-4).
cyl j
After the last sentence of clause 6.4.10, add the new Figures 6.4.10-1 and 6.4.10-2 as follows:
10

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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)

Figure 6.4.10-1 — Special forged reducer

Figure 6.4.10-2 — Special forged reducer (alternative solution)

16 Modification to 6.6
The clause 6.6 shall read as follows:
6.6.1 General
The rules of this sub-clause are to check the mechanical resistance of the flange connection subjected to
static loads. It is also in the responsibility of the designer to ensure the adequacy of the flange connection
(gasket type and characteristics, etc) with the operating conditions, in particular with regards to any specific
required tightness.
If there is a specific requirement on tightness for the flange connection, this shall be calculated in accordance
with EN 1591-1, using Annex P.
The designer shall consider section loadings caused by the connected piping system.
11

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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)
The classification of material for flanges, bolts and nuts is given by EN 1515-2 (PN flanges) and EN 1515-3
(Class flanges). The selection of bolting shall comply with Annex D or Annex Q and EN 1515-4.
6.6.2 Symbols
For the purposes of 6.6, the symbols given in Table 6.6.2-1 shall apply in addition to those given in
Table 3.2-1.
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
6.6.3 Standard flange
A standard steel flange connection in accordance with defined material requirements, giving the maximum
allowable pressure with regards to the flange materials and the design temperature, may be used within the
construction of piping subjected to internal pressure, without the necessity of carrying out a calculation to
verify its resistance when the following conditions are met:
a) For each normal working condition, the design pressure shall not exceed the maximum allowable
pressure specified.
b) For conditions where the flange connection is simultaneously subjected to internal pressure, axial load
and bending moment, the equivalent design pressure, P , according to equation (6.6.2-1) shall not exceed
eq
the limits specified in a) or b).
16 M
4F
P = P + +                                   (6.6.2-1)
eq
2 3
πG πG
Where:
G is the diameter of circle on which applies the compression load of the gasket.
c) The gasket types, for each PN, are specified in EN 1514-1 to EN 1514-8.
d) The strength of the bolting for the flange connection, for each PN, shall be as indicated in EN 1515-1 to 4.
e) The difference of temperature between the flanges and the bolting shall not exceed, for a given situation,
50 °C.
f) If the design temperature is ≥ 120 °C, the thermal expansion coefficient of the flange material shall not
exceed the thermal expansion coefficient of the bolt material by more than 10 %.
6.6.4 Non-standard flange
If a non-standard flange is used, the design shall be done by applying the calculation method in
EN 1591-1, using for example Annex P, or by applying the algorithm shown in the Taylor-Forge method, using
for example Annex D.
NOTE 1 The Taylor-Forge method does not ensure tightness.
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SIST EN 13480-3:2002/kFprA5:2011
EN 13480-3:2002/FprA5:2011 (E)
NOTE 2 The algorithm given in EN 1591-1 includes a consideration of section loadings.
NOTE 3 The bolt torque should be specified by the designer. Attention should be paid in such cases to the method of
tightening. Guidance of scatter band when applying the different methods of tightening are given in EN 1591-1.
17 Modification to 7.1.3
The beginning of the sub-clause 7.1.3 shall read as follows:
This sub-clause shall apply provided that the following conditions are simultaneously fulfilled:
r ≤ 0,2D
i i
r ≥ 0,06D
i i
r ≥ 2 e
i
0,001D ≤ e ≤ 0,08D
i i
R ≤ D
i o
After equation (7.1.3-8), the NOTE shall read as follows:
NOTE Where e > 0,005 D , it is not necessary to calculate e or p .
kn y i kn b kn b
18 Modification to 7.2.3.3
Equation (7.2.3-15) shall read as follows:
 
D + e e e
3 3
i eq eq eq
2 4
 
F = U g +()2g − g − 2J H ² − 3()2 −ν g g   (7.2.3-15)
 
8 16 e D + e D + e
eq i eq i eq
 
(7.2.3-15)
Equation (7.2.3-16) shall read as follows:
2
 
 
e
3
eq
2 4
 
 
G =()2g − g − 2J H          (7.2.3-16)
   
8 D + e
i eq
 
 
 
19 Modification to 7
...