EN 13480-3:2024
(Main)Metallic industrial piping - Part 3: Design and calculation
Metallic industrial piping - Part 3: Design and calculation
This document specifies the design and calculation of industrial metallic piping systems, including supports, covered by EN 13480 series.
Metallische industrielle Rohrleitungen - Teil 3: Konstruktion und Berechnung
Dieses Dokument legt die Konstruktion und Berechnung von metallischen industriellen Rohrleitungen einschließlich ihrer Halterungen, soweit durch EN 13480 abgedeckt, fest.
Tuyauteries industrielles métalliques - Partie 3: Conception et calcul
Le présent document spécifie la conception et le calcul des réseaux de tuyauteries industrielles métalliques, supports inclus, couverts par la série EN 13480.
Kovinski industrijski cevovodi - 3. del: Konstruiranje in izračun
Ta dokument določa konstruiranje in izračun kovinskih industrijskih cevovodov, vključno z nosilci, iz skupine standardov EN 13480.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2024
Nadomešča:
SIST EN 13480-3:2018
SIST EN 13480-3:2018/A1:2021
SIST EN 13480-3:2018/A2:2020
SIST EN 13480-3:2018/A3:2020
SIST EN 13480-3:2018/A4:2021
SIST EN 13480-3:2018/A5:2023
Kovinski industrijski cevovodi - 3. del: Konstruiranje in izračun
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 13480-3:2024
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
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2024
EUROPÄISCHE NORM
ICS 23.040.01 Supersedes EN 13480-3:2017
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 European Standard was approved by CEN on 9 July 2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a 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 European Standard 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13480-3:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 10
1 Scope . 12
2 Normative references . 12
3 Terms, definitions, symbols and units . 13
3.1 Terms and definitions . 13
3.2 Symbols and units . 13
4 Basic design criteria . 15
4.1 General . 15
4.2 Loadings. 15
4.2.1 General . 15
4.2.2 Combination of loads . 16
4.2.3 Loads for dimensioning . 16
4.2.4 Other loads to be taken into account . 18
4.2.5 Design conditions . 19
4.3 Thickness . 21
4.4 Tolerances . 24
4.5 Joint coefficient . 24
4.6 Dimensioning of piping components subject to pressure . 25
5 Design stresses . 25
5.1 General . 25
5.2 Time-independent nominal design stress . 26
5.2.1 Steels other than austenitic steels . 26
5.2.2 Austenitic steels . 26
5.2.3 Nickel and / or chromium alloy steels . 27
5.2.4 Steels castings . 27
5.2.5 Additional requirements for steels with no specific control . 27
5.3 Time-dependent nominal design stress . 28
5.3.1 General . 28
5.3.2 Steels . 28
5.3.3 Nickel and/or chromium alloy steels. 29
6 Design of piping components under internal pressure . 29
6.1 Straight pipes . 29
6.2 Pipe bends and elbows . 29
6.2.1 General . 29
6.2.2 Symbols . 30
6.2.3 Required wall thicknesses . 30
6.3 Mitre bends. 31
6.3.1 General . 31
6.3.2 Symbols . 31
6.3.3 Effective radius of mitre bend . 32
6.3.4 Multiple mitre bends . 32
6.3.5 Single mitre bends . 33
6.3.6 Adjacent straight pipe sections of mitre bends . 33
6.4 Reducers . 33
6.4.1 Conditions of applicability . 33
6.4.2 Specific definitions . 34
6.4.3 Specific symbols and abbreviations . 34
6.4.4 Conical shells . 36
6.4.5 Junctions - general . 36
6.4.6 Junction between the large end of a cone and a cylinder without a knuckle . 37
6.4.7 Junction between the large end of a cone and a cylinder with a knuckle . 39
6.4.8 Junction between the small end of a cone and a cylinder . 41
6.4.9 Offset reducers . 43
6.4.10 Special forged reducers . 43
6.5 Flexible piping components . 44
6.5.1 General . 44
6.5.2 Expansion joints . 44
6.5.3 Corrugated metal hose assemblies . 46
6.6 Bolted flange connections . 47
6.6.1 General . 47
6.6.2 Symbols . 47
6.6.3 Standard flange . 47
6.6.4 Non-standard flange . 48
7 Design of ends under internal pressure . 48
7.1 Dished ends . 48
7.1.1 Symbols . 48
7.1.2 Hemispherical ends . 49
7.1.3 Torispherical ends . 50
7.1.4 Ellipsoidal ends . 51
7.1.5 Calculation of β . 52
7.2 Circular flat ends . 56
7.2.1 General . 56
7.2.2 Symbols . 56
7.2.3 Unstayed flat circular ends welded to cylindrical shells/pipes . 58
7.2.4 Unstayed flat circular bolted ends . 65
7.2.5 Reinforcements of openings in unstayed flat ends. 71
8 Openings and branch connections . 74
8.1 General . 74
8.2 Symbols . 74
8.3 Limitations . 75
8.3.1 Thickness ratio . 75
8.3.2 Openings in the vicinity of discontinuities . 77
8.3.3 Types of reinforcement . 79
8.3.4 Calculation method . 79
8.3.5 Elliptical openings and oblique branch connections . 80
8.3.6 Reinforcing pads . 81
8.3.7 Dissimilar material of shell and reinforcements . 81
8.3.8 Extruded outlets . 82
8.3.9 Forged tee . 82
8.3.10 Branches in bends or elbows . 83
8.3.11 Screwed-in branches . 83
8.4 Isolated openings . 84
8.4.1 General . 84
8.4.2 Unreinforced openings . 87
8.4.3 Reinforced openings with d /D < 0,8 . 87
i i
8.4.4 Reinforced single openings with 0,8< d /D ≤ 1,0 . 93
i i
8.5 Adjacent openings . 93
8.5.1 Unreinforced openings. 93
8.5.2 Reinforced openings with d /D ≤ 0,8 . 93
i i
8.6 Design of special piping components . 94
8.6.1 Cylindrical Y-pieces . 94
8.6.2 Spherical Y-pieces . 95
8.6.3 Triform reinforced branches . 96
9 Design of piping components under external pressure . 97
9.1 General . 97
9.1.1 External calculation pressure . 97
9.1.2 Exception from verification against external pressure . 98
9.1.3 General acceptance criteria . 98
9.2 Symbols and elastic stress limits . 99
9.2.1 Symbols . 99
9.2.2 Stress limits . 101
9.3 Cylindrical pipes, elbows and mitre bends . 102
9.3.1 Determination of lengths . 102
9.3.2 Interstiffener collapse . 104
9.3.3 Overall collapse of stiffened pipes . 105
9.3.4 Stiffener stability . 106
9.3.5 Heating/cooling channels . 109
9.4 Reducers (conical shells) . 110
9.5 Dished ends . 112
9.5.1 Hemispherical ends . 112
9.5.2 Torispherical ends . 113
9.5.3 Ellipsoidal ends . 113
10 Design for cyclic loading . 113
10.1 General . 113
10.2 Exemption from detailed fatigue analysis . 113
10.3 Fatigue design for cyclic pressure . 114
10.3.1 Equivalent full load cycles. 114
10.3.2 Simplified fatigue analysis . 114
10.4 Fatigue design for thermal gradients. 129
10.4.1 General . 129
10.4.2 Design guidance . 129
10.5 Fatigue design for combined loads . 129
11 Integral attachments . 130
11.1 General . 130
11.2 Allowable stresses . 130
11.3 Symbols . 131
11.4 Hollow circular attachments . 133
11.4.1 Limitations . 133
11.4.2 Preliminary calculations . 133
11.4.3 Analysis of attachments welded to pipe with a full penetration weld . 135
11.4.4 Analysis of attachments welded to pipe with fillet or partial penetration weld . 136
11.5 Rectangular attachments . 136
11.5.1 Limitations . 136
11.5.2 Preliminary calculations . 136
11.5.3 Analysis of attachments welded to pipe with a full penetration weld . 138
11.5.4 Analysis of attachments welded to pipe with fillet or partial penetration weld . 139
11.6 Stress analysis of the run pipe . 139
11.7 Shear stress analysis in attachment . 141
11.7.1 Hollow circular attachments . 141
11.7.2 Rectangular attachments . 141
11.8 Alternative calculation methods . 141
12 Flexibility analysis and acceptance criteria . 142
12.1 Basic conditions . 142
12.1.1 General . 142
12.1.2 Loading conditions . 142
12.1.3 Allowable stresses . 142
12.2 Piping flexibility . 144
12.2.1 General . 144
12.2.2 Basic conditions . 144
12.2.3 Displacement strains . 144
12.2.4 Displacement stresses . 145
12.2.5 Stress range . 146
12.2.6 Cold pull . 146
12.2.7 Properties for flexibility analysis . 146
12.2.8 Supporting conditions. 147
12.2.9 Expansion joints . 148
12.2.10 Flexibility analysis . 149
12.3 Flexibility analysis. 151
12.3.1 General . 151
12.3.2 Stress due to sustained loads . 152
12.3.3 Stress due to sustained and occasional or exceptional loads . 153
12.3.4 Stress range due to thermal expansion and alternating loads. 155
12.3.5 Additional conditions for the creep range . 157
12.3.6 Stresses due to a single non-repeated support movement . 157
12.3.7 Determination of resultant moments . 158
12.3.8 Reactions . 160
12.4 Fatigue analysis . 160
12.5 Vibration . 160
13 Pipe Supports . 161
13.1 General requirements . 161
13.1.1 General . 161
13.1.2 Classification of supports . 162
13.1.3 Additional definitions . 162
13.1.4 Boundaries . 164
13.1.5 Pipe supports welded to the pipe . 166
13.2 Selection of pipe supports . 167
13.2.1 General . 167
13.2.2 Detail design of pipe supports . 168
13.2.3 Support location . 169
13.3 Constant hangers/base mounted (pedestal) constant supports . 169
13.3.1 General . 169
13.3.2 Load deviation from calibrated load . 169
13.3.3 Site adjustment of the calibrated load . 169
13.3.4 Travel reserve (Overtravel) . 169
13.3.5 Blocking . 169
13.3.6 Identification Marking/Name plate . 169
13.4 Variable load spring hangers and base mounted (pedestal) variable load spring
supports . 170
13.4.1 General . 170
13.4.2 Tolerance on spring rate . 171
13.4.3 Travel reserve (Overtravel) . 171
13.4.4 Blocking . 171
13.4.5 Name plate . 171
13.5 Rigid struts . 171
13.6 Shock arrestors, shock absorber (snubber) . 172
13.7 Sliding supports . 172
13.8 Anchors . 173
13.9 Documentation of supports . 173
13.10 Marking of supports . 173
13.11 Design and manufacture of pipe supports . 173
13.11.1 Material requirements . 173
13.11.2 Design temperatures for support components . 173
13.11.3 Design details . 175
13.11.4 Determination of component sizes . 175
13.11.5 Welded connections . 177
13.11.6 Bolted connections . 179
13.11.7 Additional requirements on springs . 182
13.11.8 Design details for rigid struts. 182
13.11.9 Design details for shock arrestors, shock absorbers (snubbers) . 182
13.11.10 Clamps for shock arrestors, rigid struts . 183
13.11.11 Alternative rules for design and manufacture of pipe supports. 184
Annex A (informative) Dynamic effect. 185
A.1 General . 185
A.1.1 Introduction . 185
A.1.2 Vibration design guidelines . 185
A.2 Analysis by calculation . 191
A.2.1 General . 191
A.2.2 Seismic events . 192
A.2.3 Rapid valve closure . 197
A.2.4 Flow induced vibration . 200
A.2.5 Safety valve discharge . 203
A.2.6 Allowable stresses . 205
A.2.7 Structural vibration properties . 205
A.3 Alternative means of design verification. 207
A.3.1 Comparative studies . 207
A.3.2 Full scale testing . 208
A.3.3 Reduced scale testing . 208
A.4 Validation (measuring) . 208
Annex B (normative) More accurate calculation of bends and elbows . 209
B.1 General . 209
B.2 Symbols and units . 209
B.3 Required wall thickness . 210
B.4 Calculation . 211
B.4.1 Calculation of wall thickness . 211
B.4.2 Stress calculation . 213
Annex C (informative) Expansion joints . 217
C.1 Incorporation of expansion joints into piping systems . 217
C.1.1 General . 217
C.1.2 Types of expansion joints . 218
C.1.3 Design of expansion joints . 218
C.1.4 Designing with expansion joints . 219
C.1.5 Analyses and calculation . 221
C.1.6 Cold pull . 221
C.2 Maximum spacing for unrestrained axially compensated straight runs . 222
C.2.1 General . 222
C.2.2 Calculation rules . 222
C.2.3 Maximum spacing for specified conditions . 223
C.3 Indication for the design of expansion joints . 224
C.3.1 General . 224
C.3.2 Information for the system analyst . 224
Annex D (normative) Flanges . 225
D.1 Purpose . 225
D.2 Specific terms and definitions . 225
D.3 Specific symbols and abbreviations .
...
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