1、Metallic industrial pipingPart 3: Design and calculationBS EN 134803:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13480-3 June 2017 ICS 23.040.01 Supersedes EN 13480-3:2012English Version Metallic industrial
2、 piping - Part 3: Design and calculationTuyauteries industrielles mtalliques - Partie 3 : Conception et calcul Industrielle metallische Rohrleitungen - Teil 3: Konstruktion und Berechnung This European Standard was approved by CEN on 21 June 2017. CEN members are bound to comply with the CEN/CENELEC
3、 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 t
4、o 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 offici
5、al 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, N
6、orway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All righ
7、ts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13480-3:2017 ENational forewordThis British Standard is the UK implementation of EN 134803:2017. It supersedes BS EN 134803:2012 which is withdrawn.The UK participation in its preparation was ent
8、rusted to Technical Committee PVE/10, Piping systems.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The Briti
9、sh Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 98618 5ICS 23.040.01Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 Septem
10、ber 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 134803:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13480-3 June 2017 ICS 23.040.01 Supersedes EN 13480-3:2012English Version Metallic industrial piping - Part 3: Design and calculationTuyauter
11、ies industrielles mtalliques - Partie 3 : Conception et calcul Industrielle metallische Rohrleitungen - Teil 3: Konstruktion und Berechnung This European Standard was approved by CEN on 21 June 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condit
12、ions 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
13、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 standa
14、rds 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, Slovak
15、ia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means
16、reserved worldwide for CEN national Members. Ref. No. EN 13480-3:2017 EBS EN 134803:2017EN 134803:2017 (E) Issue 1 (201706) 2 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
17、 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 22 4.4 Tolerances 25 4.5 Joint coefficient . 25 4.6 Dimensioning of
18、 piping components subject to pressure . 26 5 Design stresses 26 5.1 General . 26 5.2 Timeindependent nominal design stress 27 5.2.1 Steels other than austenitic steels . 27 5.2.2 Austenitic steels 27 5.2.3 Nickel and / or chromium alloy steels 28 5.2.4 Steels castings 28 5.2.5 Additional requiremen
19、ts for steels with no specific control 28 5.3 Timedependent nominal design stress 29 5.3.1 General . 29 5.3.2 Steels . 29 5.3.3 Nickel and/or chromium alloy steels 30 6 Design of piping components under internal pressure . 30 6.1 Straight pipes . 30 6.2 Pipe bends and elbows . 30 6.2.1 General . 30
20、6.2.2 Symbols 31 6.2.3 Required wall thicknesses 31 6.3 Mitre bends. 32 6.3.1 General . 32 6.3.2 Symbols 32 6.3.3 Effective radius of mitre bend . 33 6.3.4 Multiple mitre bends 33 6.3.5 Single mitre bends . 34 BS EN 134803:2017EN 134803:2017 (E) Issue 1 (201706) 3 6.3.6 Adjacent straight pipe sectio
21、ns of mitre bends . 34 6.4 Reducers 34 6.4.1 Conditions of applicability 34 6.4.2 Specific definitions . 35 6.4.3 Specific symbols and abbreviations . 35 6.4.4 Conical shells 36 6.4.5 Junctions general 37 6.4.6 Junction between the large end of a cone and a cylinder without a knuckle 37 6.4.7 Juncti
22、on between the large end of a cone and a cylinder with a knuckle 40 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 a
23、ssemblies 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 Nonstandard 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
24、 ends . 51 7.1.5 Calculation of 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 con
25、nections . 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 80 8.3.5 Elliptical openings and oblique branch connections . 80 8.3.6 Reinforcing pads . 82 8.3.7 D
26、issimilar material of shell and reinforcements 82 8.3.8 Extruded outlets 82 8.3.9 Forged tee 82 8.3.10 Branches in bends or elbows 83 8.3.11 Screwedin branches . 83 8.4 Isolated openings 84 8.4.1 General . 84 8.4.2 Unreinforced openings . 87 BS EN 134803:2017EN 134803:2017 (E) Issue 1 (201706) 4 8.4
27、.3 Reinforced openings with di/DiA 30 % 4,2;5,1minm,0p1 RRft(5.2.22) for A 30 %, see 5.2.1.1. When different rupture elongation values for longitudinal and transverse directions are provided in the material standard, the lowest value shall be used. 5.2.2.2 Test conditions For A 35 %, the designer sh
28、all ensure that the stress under the proof test conditions, given in EN 134805, shall not exceed the greater of the following values: 95 % Rp1,0 at specified test temperature; 45 % Rmat specified test temperature. For 30 A 35 %, the designer shall ensure that the stress under the proof test conditio
29、ns, given in EN 134805, shall not exceed 95 % Rp1,0 at specified test temperature. BS EN 134803:2017EN 134803:2017 (E) Issue 1 (201706) 28 For A 30 %, the designer shall ensure that the stress under the proof test conditions, given in EN 134805, shall not exceed 95 % ReHor 95 % Rp0,2 at specified te
30、st temperature. 5.2.3 Nickel and / or chromium alloy steels Timeindependent nominal design stress for Nickel and/or chromium alloy steels depend on the specified minimum elongation after rupture at room temperature. 5.2.4 Steels castings 5.2.4.1 Design conditions The design stress shall be in accord
31、ance with the following: 0,3;9,1or9,1minmp0,2eH RRRftt(5.2.41) 5.2.4.2 5.2.4.2 Test conditions The designer shall ensure that the stress under the proof test conditions, given in EN 134805, shall not exceed ReH or Rp0,2at the specified test temperature divided by a safety factor of 1,4. 5.2.5 Additi
32、onal requirements for steels with no specific control 5.2.5.1 General Steels with no specific control are those not possessing at least a test report 2.2 in accordance with EN 10204, and shall only be used if permitted in the technical specification. These steels shall be subjected to a positive mat
33、erial identification prior to use, to ensure weldability. 5.2.5.2 Design conditions The design stress given in 5.2.1.1 shall be divided by an additional safety factor which shall not be less than 1,2. Where the yield strength values at elevated temperatures for unalloyed steels are not specified in
34、the material standards, the following equation may be used: 4001720m0,2ptRR (5.2.51) where t is between 20 C and 150 C. 5.2.5.3 Test conditions The designer shall ensure that the stress under the proof test conditions, given in EN 134805, shall not exceed 95 % ReH at the specified test temperature. BS EN 134803:2017
