EN 13445-3:2014/prA15

SLOVENSKI STANDARD
01-maj-2019
1HRJUHYDQHWODþQHSRVRGHGHO.RQVWUXLUDQMH'RSROQLOR$
Unfired pressure vessels - Part 3: Design
Unbefeuerte Druckbehälter - Teil 3: Konstruktion; Deutsche und Englische Fassung EN
13445-3:2014/prA15:2018
Récipients sous pression non soumis à la flamme - Partie 3 : Conception
Ta slovenski standard je istoveten z: EN 13445-3:2014/prA15
ICS:
23.020.32 7ODþQHSRVRGH Pressure vessels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 13445-3:2014
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
April 2019
ICS 23.020.30
English Version
Unfired pressure vessels - Part 3: Design
Récipients sous pression non soumis à la flamme - Unbefeuerte Druckbehälter - Teil 3: Konstruktion;
Partie 3 : Conception Deutsche und Englische Fassung EN 13445-
3:2014/prA15:2018
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 54.

This draft amendment A1, if approved, will modify the European Standard EN 13445-3:2014. 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.

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Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
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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: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13445-3:2014/prA1:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Modification to 9.4.7 . 4
2 Modification to 11.4.4 . 4
3 Modification to Annex A . 4
Annex A (normative) Design requirements for pressure bearing welds . 5
European foreword
This document (EN 13445-3:2014/prA15:2019) has been prepared by Technical Committee CEN/TC 54
“Unfired pressure vessels”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a standardization request 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 13445-3:2014.
1 Modification to 9.4.7
Change the second paragraph by the following:
“9.4.7 Nozzles to shell connections
For welded nozzles the cross sectional area of the nozzle can always be taken in account for
reinforcement of the opening, provided weld dimensions are in accordance with the requirements of
Annex A.
2 Modification to 11.4.4
Change the first paragraph by the following:
“11.4.4 Flange constructions
A distinction is made between flanges in which the bore of the flange coincides with the bore of the shell
and those with a fillet weld at the end of the shell in which the two bores are different (for requirements
see Annex A). They are known as smooth bore (see Figure 11.5-1) and stepped bore (see Figure 11.5-2)
respectively
3 Modification to Annex A
Change the Annex by the following:
Annex A
(normative)
Design requirements for pressure bearing welds
Weld details may be used if they are described in EN 1708-1 or if they are required due to design
reasons. The selection of weld details shall be made in such a way that the testing required by
applicable testing group can be performed.
NOTE See also EN 13445-4:2014 and EN 13445-5:2014 for additional requirements on welds.
The tables in this annex specify which type of welds are excluded for design by analysis direct route
(DBA-DR), excluded for creep, excluded for fatigue or excluded generally. In addition, the fatigue classes
or the references to Tables 18-4 are given.
Table A-1 — Pressure bearing welds - Longitudinal welds in cylinders and cones,
welds in spheres and dished ends
Geometry Design Fatigue class Remarks
requirements
Not allowed for Not allowed
DBA-DR and creep
design
GENERALLY, NOT ALLOWED
GENERALLY, NOT ALLOWED
Table A-2 — Pressure bearing welds - Circumferential welds in cylinders and cones, connecting
weld between dished end and shell
Design Fatigue class Remarks
Geometry
requirements
Not allowed for see Table 18–4
DBA-DR and creep details n° 1.3
design
–– see Table 18–4
details n° 1.4
–– see Table 18–4
details n° 1.4
Not allowed for see Table 18–4 See §5.7.4.2
DBA-DR and creep details n° 1.6
design
Not allowed for see Table 18–4 See §5.7.4.1
DBA-DR and creep details n° 1.7
design
Not allowed for see Table 18–4 See §5.7.4.1
DBA-DR and creep details n° 1.7
design
Not allowed for see Table 18–4 See §5.7.4.2
DBA-DR and creep details n° 1.6
design
Not allowed for see Table 18–4 See §5.7.4.2
DBA-DR and creep details n° 1.6
design
Table A-2 — Pressure bearing welds - Circumferential welds in cylinders and cones, connecting
weld between dished end and shell (continued)
Not allowed for see Table 18–4 See §5.7.4.2
DBA-DR and creep details n° 1.6
design
Not allowed for Not allowed
DBA-DR and creep
design
GENERALLY, NOT ALLOWED
Not allowed for see Table 18–4 See §5.7.4.2
DBA-DR and creep details n° 1.6
design
Not allowed for Not allowed
DBA-DR and creep
design
GENERALLY, NOT ALLOWED
Not allowed for Not allowed Lamellar tearing
DBA-DR and creep susceptibility

design possible
Not allowed for Not allowed Lamellar tearing
DBA-DR and creep susceptibility
design possible
Table A-2 — Pressure bearing welds - Circumferential welds in cylinders and cones, connecting
weld between dished end and shell (continued)
Not allowed for Not allowed Lamellar tearing
DBA-D
...