SIST EN 13480-3:2002
(Main)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
Dieser Teil der Europäischen Norm EN 13480 legt die Konstruktion und Berechnung von industriellen metallischen Rohrleitungen einschließlich ihrer Halterungen fest.
Tuyauteries industrielles métalliques - Partie 3: Conception et calcul
La présente partie de EN 13480 spécifie la conception et le calcul des réseaux de tuyauteries industrielles métalliques, supports inclus.
Kovinski industrijski cevovodi - 3. del: Konstruiranje in izračun
Določa konstruiranje in izračun industrijskih kovinskih cevovodnih sistemov, vključno s podporami, ki jih zajema EN 13480.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13480-3:2002
01-november-2002
.RYLQVNLLQGXVWULMVNLFHYRYRGLGHO .RQVWUXLUDQMHLQL]UDþXQ
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 13480-3:2002
ICS:
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
SIST EN 13480-3:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13480-3:2002
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SIST EN 13480-3:2002
EUROPEAN STANDARD
EN 13480-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2002
ICS 23.040.01
English version
Metallic industrial piping - Part 3: Design and calculation
Tuyauteries industrielles métalliques - Partie 3: Conception Metallische industrielle Rohrleitungen - Teil 3: Konstruktion
et calcul und Berechnung
This European Standard was approved by CEN on 23 May 2002.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13480-3:2002 E
worldwide for CEN national Members.
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SIST EN 13480-3:2002
EN 13480-3:2002 (E)
Issue 1 (2002-05)
Contents
Foreword.6
1 Scope .7
2 Normative references .7
3 Terms, definitions, symbols and units .8
3.1 Terms and definitions.8
3.2 Symbols and units .8
4 Basic design criteria.10
4.1 General.10
4.2 Loadings .10
4.2.1 General.10
4.2.2 Combination of loads .11
4.2.3 Loads for dimensioning .11
4.2.4 Other loads to be taken into account .12
4.2.5 Design conditions.13
4.3 Thickness.16
4.4 Tolerances .18
4.5 Joint coefficient.18
4.6 Dimensioning of piping components subject to pressure .18
5 Design stresses.19
5.1 General.19
5.2 Time-independent nominal design stress.19
5.2.1 Steels other than austenitic steels.19
5.2.2 Austenitic steels.20
5.2.3 Nickel and / or chromium alloy steels .20
5.2.4 Steels castings.20
5.2.5 Additional requirements for steels with no specific control .21
5.3 Time-dependent nominal design stress .21
5.3.1 General.21
5.3.2 Steels.21
5.3.3 Nickel and/or chromium alloy steels .22
6 Design of piping components under internal pressure.22
6.1 Straight pipes .22
6.2 Pipe bends and elbows .23
6.2.1 General.23
6.2.2 Symbols .23
6.2.3 Required wall thicknesses.23
6.3 Mitre bends.25
6.3.1 General.25
6.3.2 Symbols .25
6.3.3 Effective radius of mitre bend .26
6.3.4 Multiple mitre bends .27
6.3.5 Single mitre bends.27
6.3.6 Adjacent straight pipe sections of mitre bends.27
6.4 Reducers.27
6.4.1 Conditions of applicability.27
6.4.2 Specific definitions .28
6.4.3 Specific symbols and abbreviations.29
6.4.4 Conical shells.30
6.4.5 Junctions - general .30
6.4.6 Junction between the large end of a cone and a cylinder without a knuckle .31
6.4.7 Junction between the large end of a cone and a cylinder with a knuckle .34
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SIST EN 13480-3:2002
EN 13480-3:2002 (E)
Issue 1 (2002-05)
6.4.8 Junction between the small end of a cone and a cylinder .35
6.4.9 Offset reducers .37
6.4.10 Special forged reducers.37
6.5 Flexible piping components .38
6.5.1 General.38
6.5.2 Expansion joints .38
6.5.3 Corrugated metal hose assemblies .39
6.6 Bolted flange connections.40
7 Design of ends under internal pressure.41
7.1 Dished ends.41
7.1.1 Symbols .41
7.1.2 Hemispherical ends.41
7.1.3 Torispherical ends.42
7.1.4 Ellipsoidal ends.44
7.1.5 Calculation of .45
7.2 Circular flat ends.48
7.2.1 General.48
7.2.2 Symbols .48
7.2.3 Unstayed flat circular ends welded to cylindrical shells/pipes .50
7.2.4 Unstayed flat circular bolted ends.57
7.2.5 Reinforcements of openings in unstayed flat ends .63
8 Openings and branch connections.66
8.1 General.66
8.2 Symbols .66
8.3 Limitations.67
8.3.1 Thickness ratio.67
8.3.2 Openings in the vicinity of discontinuities .68
8.3.3 Types of reinforcement .70
8.3.4 Calculation method.71
8.3.5 Elliptical openings and oblique branch connections .71
8.3.6 Reinforcing pads.72
8.3.7 Dissimilar material of shell and reinforcements.73
8.3.8 Extruded outlets.73
8.3.9 Branches in bends or elbows.73
8.3.10 Screwed-in branches.73
8.4 Isolated openings .74
8.4.1 General.74
8.4.2 Unreinforced openings.77
d D
8.4.3 Reinforced openings with / < 0,8.77
i i
8.4.4 Reinforced single openings with 0,8 < d/D 1,0 .83
8.5 Adjacent openings.83
8.5.1 Unreinforced openings.83
8.5.2 Reinforced openings with d/D 0,8.83
8.6 Design of special piping components.84
8.6.1 Cylindrical Y-pieces.84
8.6.2 Spherical Y-pieces.85
8.6.3 Triform reinforced branches.86
9 Design of piping components under external pressure.87
9.1 General.87
9.2 Symbols and elastic stress limits .89
9.2.1 Symbols .89
9.2.2 Elastic stress limits .90
9.3 Cylindrical pipes, elbows and mitre bends.90
9.3.1 Determination of lengths .90
9.3.2 Interstiffener collapse.92
9.3.3 Overall collapse of stiffened pipes .94
9.3.4 Stiffener stability.95
9.3.5 Heating/cooling channels .98
9.4 Reducers (conical shells) .99
9.5 Dished ends.101
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EN 13480-3:2002 (E)
Issue 1 (2002-05)
9.5.1 Hemispherical ends .101
9.5.2 Torispherical ends .102
9.5.3 Ellipsoidal ends.102
10 Design for cyclic loading .102
10.1 General.102
10.2 Exemption from detailed fatigue analysis.102
10.3 Fatigue design for cyclic pressure.103
10.3.1 Equivalent full load cycles.103
10.3.2 Simplified fatigue analysis.103
10.4 Fatigue design for thermal gradients .117
10.4.1 General.117
10.4.2 Design guidance .117
10.5 Fatigue design for combined loads .117
11 Integral attachments.118
11.1 General.118
11.2 Allowable stresses.118
11.3 Analysis methods for welded attachments on piping.119
11.3.1 General.119
11.3.2 Symbols .119
11.3.3 Limitations.120
11.3.4 Preliminary calculations.121
11.3.5 Analysis of attachments welded to pipe with a full penetration weld.124
11.3.6 Analysis of attachments welded to pipe with fillet or partial penetration weld .125
11.3.7 Stress analysis of the run pipe.125
11.4 Alternative calculation methods.126
12 Flexibility analysis and acceptance criteria.126
12.1 Basic conditions .126
12.1.1 General.126
12.1.2 Loading conditions.127
12.1.3 Allowable stresses.127
12.2 Piping flexibility.128
12.2.1 General.128
12.2.2 Basic conditions .129
12.2.3 Displacement strains.129
12.2.4 Displacement stresses .130
12.2.5 Stress range .131
12.2.6 Cold spring .131
12.2.7 Properties for flexibility analysis.131
12.2.8 Supporting conditions.132
12.2.9 Expansion joints .133
12.2.10 Flexibility analysis .133
12.3 Flexibility analysis .135
12.3.1 General.135
12.3.2 Stress due to sustained loads.136
12.3.3 Stress due to sustained and occasional or exceptional loads .136
12.3.4 Stress range due to thermal expansion and alternating loads.137
12.3.5 Additional conditions for the creep range .138
12.3.6 Stresses due to a single non-repeated support movement .138
12.3.7 Determination of resultant moments .138
12.3.8 Reactions.141
12.4 Fatigue analysis .141
13 Supports .141
13.1 General requirements.141
13.1.1 General.141
13.1.2 Classification of supports.141
13.1.3 Additional definitions .142
Boundaries .142
13.1.5 Welded support attachments.144
13.2 Material requirements.146
13.3 Design .146
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SIST EN 13480-3:2002
EN 13480-3:2002 (E)
Issue 1 (2002-05)
13.3.1 General.146
13.3.2 Design temperatures for support components .
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