EN 13445-3:2014/prA19
(Amendment)Unfired pressure vessels - Part 3: Design
Unfired pressure vessels - Part 3: Design
Revision of annex C
Unbefeuerte Druckbehälter - Teil 3: Konstruktion
Récipients sous pression non soumis à la flamme - Partie 3 : Conception
Nekurjene tlačne posode - 3. del: Konstruiranje - Dopolnilo A19
General Information
- Status
- Not Published
- Publication Date
- 25-Oct-2021
- Withdrawal Date
- 25-Apr-2022
- Technical Committee
- CEN/TC 54 - Unfired pressure vessels
- Drafting Committee
- CEN/TC 54/WG 53 - C - Design methods
- Current Stage
- 4097 - End of interruption of work - split/merged
- Start Date
- 10-Nov-2021
- Completion Date
- 14-Apr-2025
Relations
- Effective Date
- 08-Jun-2022
Overview
EN 13445-3:2014/prA19 is a CEN draft amendment to EN 13445-3:2014 - Unfired pressure vessels, Part 3: Design, published for enquiry in November 2019. prA19 specifically revises Annex C (stress classification and analysis) and updates procedures and numerical limits used when assessing stresses in unfired pressure vessels. This amendment is relevant to designers, fabricators and conformity assessment bodies working to meet European pressure equipment requirements.
Key Topics and Requirements
- Scope of amendment: Revision of Annex C - changes to stress classification (Table C‑2), stress analysis procedure (C.6), and limits on equivalent stresses (C.7.2 and C.7.3).
- Stress analysis procedure:
- Stepwise requirement to calculate elementary stresses from each load and for each loading condition listed in Table 5.3.2.4-1 (normal, exceptional, proof test).
- Decomposition of computed stresses into membrane and bending components as required by Clause C.4.4.
- For fatigue/variation checks, determine the pair(s) of normal operating conditions that produce the largest equivalent stress range.
- Classification and local considerations:
- Amendment to footnote 9 of Table C‑2: for certain cases the retained stress value is the average across the ligament width.
- Limits on equivalent primary stresses (C.7.2):
- Equivalent primary membrane stresses must not exceed the nominal design stress f.
- Other primary stress limits: equivalent primary limit and total primary stresses are limited to 1.5·f, with f taken from Table 5.3.2.4‑1 at the calculation temperature for the loading condition.
- Limits on stress ranges (primary + secondary) (C.7.3):
- The equivalent stress range Δσ (resulting from variation between two normal operating conditions) shall satisfy: Δσ ≤ 3·f.
- For this check, f is determined on the basis of the material yield strength (exception to Clause 6).
Applications and Who Uses It
- Engineers designing unfired pressure vessels subject to European market rules.
- Mechanical and pressure-vessel designers performing finite-element or analytical stress assessments.
- Fabricators and weld designers validating local stresses across ligaments and attachments.
- Notified bodies, inspection authorities and compliance teams assessing conformity with EN 13445 and related EU Directives.
- Use cases include chemical reactors, storage vessels, heat exchangers and process plant pressure equipment.
Related Standards
- EN 13445 (other parts: general, materials, fabrication, inspection) - the full EN 13445 series for unfired pressure vessels.
- National implementations of EN 13445 and conformity assessment guidance under EU pressure equipment directives.
Keywords: EN 13445-3, prA19, unfired pressure vessels, Annex C, stress analysis, membrane stress, bending stress, equivalent stress range, pressure vessel design, CEN.
Frequently Asked Questions
EN 13445-3:2014/prA19 is a draft published by the European Committee for Standardization (CEN). Its full title is "Unfired pressure vessels - Part 3: Design". This standard covers: Revision of annex C
Revision of annex C
EN 13445-3:2014/prA19 is classified under the following ICS (International Classification for Standards) categories: 23.020.30 - Pressure vessels, gas cylinders. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 13445-3:2014/prA19 has the following relationships with other standards: It is inter standard links to EN 13445-3:2014. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 13445-3:2014/prA19 is associated with the following European legislation: EU Directives/Regulations: 2014/68/EU; Standardization Mandates: M/071. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase EN 13445-3:2014/prA19 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2019
Neogrevane (nekurjene) tlačne posode - 3. del: Konstruiranje - Dopolnilo A19
Unfired pressure vessels - Part 3: Design
Unbefeuerte Druckbehälter - Teil 3: Konstruktion
Récipients sous pression non soumis à la flamme - Partie 3 : Conception
Ta slovenski standard je istoveten z: EN 13445-3:2014/prA19
ICS:
23.020.32 Tlačne posode 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
prA19
November 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
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 A19, 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.
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, 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/prA19:2019 E
worldwide for CEN national Members.
EN 13445-3:2014/prA1:2019 (E)
Contents Page
European foreword . 3
1 Modification to Table C-2 – Classification of stresses in some typical cases . 4
2 Modifications to C.6, Stress analysis procedure . 4
3 Modification to C.7.2, Limitation of equivalent primary stresses. 4
4 Modification to C.7.3, Limitation of equivalent stress ranges resulting from primary
+ secondary stresses . 5
...
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