EN 13445-3:2014/A7:2019
(Amendment)Unfired pressure vessels - Part 3: Design
Unfired pressure vessels - Part 3: Design
This Part of this European Standard specifies requirements for the design of unfired pressure vessels covered by EN 13445-1:2009 and constructed of steels in accordance with EN 13445-2:2009. EN 13445-5:2009, Annex C specifies requirements for the design of access and inspection openings, closing mechanisms and special locking elements. NOTE This Part applies to design of vessels before putting into service. It may be used for in service calculation or analysis subject to appropriate adjustment.
Unbefeuerte Druckbehälter - Teil 3: Konstruktion
Dieser Teil 3 der Europäischen Norm legt die Anforderungen an die Konstruktion von unbefeuerten Druckbehältern
nach EN 13445-1:2014 und hergestellt aus Stählen nach EN 13445-2:2014 fest.
EN 13445-5:2014 gibt im Anhang C Bedingungen für die Konstruktion von Zugangs- und Besichtigungsöffnungen,
von Verschlüssen und besonderen Verschlusselementen.
ANMERKUNG Dieser Teil gilt für Konstruktion und Berechnung von Behältern vor der Inbetriebnahme. Er kann auch, mit
entsprechenden Anpassungen, für Berechnungen oder analytische Nachweise im Betrieb verwendet werden.
Récipients sous pression non soumis à la flamme - Partie 3 : Conception
Cette partie de la présente norme européenne spécifie les exigences relatives à la conception des récipients sous
pression non soumis à la flamme couverts par l’EN 13445-1:2014 et construits en aciers conformes à
l’EN 13445-2:2014.
L’Annexe C de l’EN 13445-5:2014 spécifie les exigences relatives à la conception des ouvertures d’accès et
d’inspection, des mécanismes de fermeture et des éléments de verrouillage spéciaux.
NOTE Cette partie s'applique à la conception des récipients avant mise en service. Elle peut être utilisée pour les calculs
ou l'analyse en service sous réserve d'apporter les ajustements appropriés.
Neogrevane (nekurjene) tlačne posode - 3. del: Konstruiranje - Dopolnilo A7
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2019
1HRJUHYDQH QHNXUMHQH WODþQHSRVRGHGHO .RQVWUXLUDQMH'RSROQLOR$
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/A7:2019
ICS:
23.020.32 7ODþQHSRVRGH Pressure vessels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 13445-3:2014/A7
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2019
EUROPÄISCHE NORM
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 amendment A7 modifies the European Standard EN 13445-3:2014; it was approved by CEN on 12 November 2018.
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. 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 amendment 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13445-3:2014/A7:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Modification to Annex R (informative), Coefficients for creep-rupture model equations for
extrapolation of creep-rupture strength . 4
European foreword
This document (EN 13445-3:2014/A7:2019) has been prepared by Technical Committee CEN/TC 54
“Unfired pressure vessels”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by October 2019, and conflicting national standards shall be withdrawn
at the latest by October 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate 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.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
1 Modification to Annex R (informative), Coefficients for creep-rupture model
equations for extrapolation of creep-rupture strength
Replace the existing annex with the following one:
“
Annex R
(informative)
Coefficients for creep-rupture model equations for extrapolation of creep-
rupture strength
R.1 General
Long-time creep-rupture strength values for a wide range of engineering steels have been determined for
inclusion in European product and design standards. In a number of cases, the model equations and the
respective material dependent constants to underpin these strength values have been published (e.g. [1],
[2]). Constants for 37 alloys are collated in the following annex to enable the determination of their rupture
strength values for lifetimes lower than those specified in the material standards to which they relate.
The collated material dependent constants are for the selection of model equations available in BS-
PD6605 [3] (Table R.1) . When model equation parameters are available for the same alloy in both source
references [1], [2], those given in ECCC Data Sheets are adopted . These were determined originally, in a
rigorous manner, according to ECCC recommendations [4]. Strength values determined according to
ECCC recommendations have been verified by at least one check assessment, with the results of all
assessments having passed the ECCC post assessment tests [4]. The constants available for certain steels are
the same in both source references [1], [2]. In such cases, both references are cited in Table R.2. In 2015, the
updated ECCC Data Sheets [5] were reviewed, and where necessary, revised coefficients were provided, as
described in [6]. These are now included in Table R.2. Moreover, the limits of the original strength tables
derived from those parameters are now included in Table R.3, for information purposes.
The steels in Table R.2 are given their Material Identification from the source documents [1], [2], [5] (first
column from the left), and the actual or closest grade identified in EN standards (second and third columns).
See also Annex E, European steels for pressure purposes, in EN 13445-2:2014. A few of the materials in
Table R.2 are not listed in EN 13445-2:2014, Annex E; if they are to be used within this standard, a Particular
Material Appraisal will be required.
The constants given in Table R.2 shall only be used to determine creep rupture strengths for the range of
application temperatures, and up to the maximum life times, specified in the relevant material standard or
reference data source [1], [2]. It is also recommended that the data are not used to interpolate to lifetimes
less than 1 000 h. There will be an unacceptable level of uncertainty for strength values determined using
the constants outside of these t *(T,σ) limits.
u
In BS-PD6605 [3], predicted times are expressed as natural logarithms in the standard-option model equations. The
model equations given in Table R.1 express predicted time as logarithm to the base 10 to be consistent with the format
adopted in BS-PD6525 [1]. Constants in Table R.2 derived in ECCC assessments [2] and [5] using the BS-PD6605
procedure have been adjusted accordingly, and the models expressed in Table R.2 explicitly to base 10.
ECCC refers to the European Creep Collaborative Committee. The ECCC Data Sheets are contained in [2], [5].
Table R.1 — Creep-rupture model equations
MODEL Code COMMENT
Algebraic models:
1) Soviet Model 1
log [t *] = β + β ·log (T) + β ·log [σ ] + β /T + β .·σ /T SM1
10 u 0 1 10 2 10 3 4
2) Soviet Model 2
log [t *] = β + β ·log (T) + β ·log [σ ]/T + β /T + β .·σ /T SM2
10 u 0 1 10 2 10 3 4
3) Minimum Commitment Model
log [t *] = β + β .·log [σ ] + β .·σ + β .·σ + β ·T + β /T MC
10 u 0 1 10 2 3 4 5
TTP models:
2 3
f(σ) = β + β ·log [σ ] + β ·(log [σ ]) + β ·(log [σ ]) + β ·
0 1 10 2 10 3 10 4
(log [σ ])
a) Mendelson-Roberts-Manson (MRM)
r
log [t *] = f(σ)·(T – T ) + β
10 u o 5
b) MRM with r = −1
log [t *] = f(σ)/(T – T ) + β MRn n is order of f(σ) polynomial
10 u o 5
c) Larson-Miller (MRn with T = 0)
o
log [t *] = f(σ)/T + β LMn n is order of f(σ) polynomial
10 u 5
d) Manson-Haferd (MRM with r = 1)
log [t *] = f(σ)·(T – T ) + β MHn n is order of f(σ) polynomial
10 u o 5
e) Manson-Haferd with T = 0
o
log [t *] = f(σ)·T + β MH0n n is order of f(σ) polynomial
10 u 5
f) Orr-Sherby-Dorn
log [t *] = f(σ) + β OSDn n is order of f(σ) polynomial
10 u 5
t * is time to rupture in h, T is temperature in K, and σ is stress in MPa.
u
Table R.2 — Constants for creep-rupture equations
MATERIAL IDENTIFICATIONS
REF R To β0 β1 β2 β3 β4 β5
EN Material Grade, Heat
...
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