SIST EN 13445-6:2002/A1:2004

Unfired pressure vessels - Part 6 :Requirements for design and fabrication of pressure vessel and vessel parts constructed of spheroidal graphite cast iron - Annex D Assessment of fatigue life

Methodology for determining lifetime of SGCI under pulsating loads

Unbefeuerte Druckbehälter - Teil 6: Anforderungen an die Konstruktion und Herstellung von Druckbehältern und Druckbehälterteilen aus Gusseisen mit Kugelgraphit

Récipients sous pression non soumis a la flamme - Partie 6: Exigences pour la conception et la fabrication des récipients sous pression et des parties sous pression moulés en fonte a graphite sphéroidal - Annexe D Evaluation de la durée de vie en fatigue

Neogrevane tlačne posode - 6. del: Zahteve za konstruiranje in proizvodnjo tlačnih posod in delov posode iz nodularne litine - Dodatek D: Ocena odpornosti proti utrujanju

General Information

• Status: Withdrawn
• Publication Date: 31-Aug-2004
• Withdrawal Date: 17-Oct-2010
• ICS: 23.020.32 - Pressure vessels
• ICS: 77.140.01 - Iron and steel products in general
• Technical Committee: TLP - Pressure vessels
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 15-Oct-2010
• Due Date: 07-Nov-2010
• Completion Date: 18-Oct-2010
• Directive: 97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Ref Project: EN 13445-6:2002/A1:2004 - Unfired pressure vessels - Part 6 :Requirements for design and fabrication of pressure vessel and vessel parts constructed of spheroidal graphite cast iron - Annex D Assessment of fatigue life

Relations

• Amends: SIST EN 13445-6:2002 - Unfired pressure vessels - Part 6: Requirements for the design and fabrication of pressure vessels and pressure parts constructed from spheroidal graphite cast iron
• Effective Date: 01-Sep-2004
• Replaced By: SIST EN 13445-6:2009 - Unfired pressure vessels - Part 6: Requirements for the design and fabrication of pressure vessels and pressure parts constructed from spheroidal graphite cast iron
• Effective Date: 01-Dec-2010
• Amends: SIST EN 13445-6:2002 - Unfired pressure vessels - Part 6: Requirements for the design and fabrication of pressure vessels and pressure parts constructed from spheroidal graphite cast iron
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 13445-6:2002/A1:2004
01-september-2004
1HRJUHYDQHWODþQHSRVRGHGHO=DKWHYH]DNRQVWUXLUDQMHLQSURL]YRGQMRWODþQLK
SRVRGLQGHORYSRVRGHL]QRGXODUQHOLWLQH'RGDWHN'2FHQDRGSRUQRVWLSURWL
XWUXMDQMX
Unfired pressure vessels - Part 6 :Requirements for design and fabrication of pressure
vessel and vessel parts constructed of spheroidal graphite cast iron - Annex D
Assessment of fatigue life
Unbefeuerte Druckbehälter - Teil 6: Anforderungen an die Konstruktion und Herstellung
von Druckbehältern und Druckbehälterteilen aus Gusseisen mit Kugelgraphit
Récipients sous pression non soumis a la flamme - Partie 6: Exigences pour la
conception et la fabrication des récipients sous pression et des parties sous pression
moulés en fonte a graphite sphéroidal - Annexe D Evaluation de la durée de vie en
fatigue
Ta slovenski standard je istoveten z: EN 13445-6:2002/A1:2004
ICS:
23.020.30 7ODþQHSRVRGHSOLQVNH Pressure vessels, gas
MHNOHQNH cylinders
SIST EN 13445-6:2002/A1:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 13445-6:2002/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2004
ICS 23.020.30
English version
Unfired pressure vessels - Part 6 :Requirements for design and
fabrication of pressure vessel and vessel parts constructed of
spheroidal graphite cast iron - Annex D Assessment of fatigue
life
Récipients sous pression non soumis à la flamme - Partie Unbefeuerte Druckbehälter - Teil 6: Anforderungen an
6: Exigences pour la conception et la fabrication des Druckbehälter und Druckbehältern-Teile aus Gusseisen mit
récipients sous pression et des parties sous pression Kugelgraphit
moulés en fonte à graphite sphéroidal - Annexe D
Evaluation de la durée de vie en fatigue
This amendment A1 modifies the European Standard EN 13445-6:2002; it was approved by CEN on 9 February 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, 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
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13445-6:2002/A1:2004: E
worldwide for CEN national Members.

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EN 13445-6:2002/A1:2004 (E)
Contents page
Foreword. 3
Annex D (normative) Assesment of fatigue life . 4
D.1 Purpose. 4
D.2 Specific definitions . 4
D.3 Specific symbols and abbreviations. 4
D.4 Limitations. 4
D.5 General. 5
D.6 Determination of allowable number of pressure cycles . 5
D.6.1 Pseudo-elastic stress range Dss. 5
D.6.2 Corrections to stress range. 5
D.6.3 Fictitious stress range. 6
D.6.4 Fatigue design curves . 7
D.6.5 Allowable number of cycles. 8
D.6.6 Allowable stress range. 9
D.6.7 Assessment rule for total fatigue damage . 9
D.6.8 Repairs of surface imperfections. 9
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 97/23/EC .10
2

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EN 13445-6:2002/A1:2004 (E)
Foreword
This document (EN 13445-6:2002/A1:2004) has been prepared by Technical Committee CEN/TC 54 “Unfired
pressure vessels”, the secretariat of which is held by BSI.
The document includes the text of the amendment itself. The corrected pages of EN 13445-6 will be delivered
as issue 10 of the standard.
This Amendment to the European Standard EN 13445-6:2002/A1:2004 shall be given the status of a national
standard, either by publication of an identical text or by endorsement, at the latest by October 2004, and
conflicting national standards shall be withdrawn at the latest by October 2004.
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 this document .
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
3

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EN 13445-6:2002/A1:2004 (E)
Add Annex D as follows:
Annex D
(normative)
Assessment of fatigue life
D.1 Purpose
D.1.1 This annex gives rules for the simplified and detailed assessment of fatigue life of pressure
equipment, due to pressure fluctuations, additional stress by rapid temperature changes in operation
conditions or additional induced stresses due to external forces in the critical zones (for critical zone definition
see 3.1.1 ). The design and manufacture of pressure equipment shall be according to Part 6, and materials of
spheroidal graphite cast iron grades according to Table 5.1-1 and Table 5.1-2.
D.1.2 The rules for the simplified assessment may be applied in case of internal pressure fluctuations only.
Other cyclic loads, e.g. due to changes in temperature during operation or to variation of external loads, shall
be assessed according to the rules for the detailed assessment.
NOTE The rules for the simplified assessment are based on conservative assumptions. More accurate, less
conservative results can be obtained with the rules for the detailed assessment.
D.1.3 It is assumed that the vessel has been designed in accordance with all of the requirements of EN
13445-6. This annex D on assessment of fatigue life only need to be performed if the service conditions
require more than 200 000 full pressure cycles or equivalent number of cycles with smaller amplitude (see
clause 4) or when the pressure equipment is considered as predominantly non – cyclic loaded .
D.1.4 Fatigue cracks can propagate from surface imperfections on the side opposite to pressure
fluctuations, acceptance criteria for these imperfections are given in 7.1. The criterium to be used to fail under
cyclic loading is a surface fatigue crack, which can be viewed by optical means or an appropriate non
destructive method.
D.2 Specific definitions
See EN 13445-3 and clause 3.
D.3 Specific symbols and abbreviations
The following symbols and abbreviations are in addition to those given in 3.3 and in EN 13445-3:2002, clause
4, 17.3 and 18.3.
C factor in equation of fatigue design curve for spheroidal graphite cast iron components;
C
m exponent in equation of fatigue design curve for spheroidal graphite cast iron components.
C
D.4 Limitations
D.4.1 These rules apply to components designed by:
a) Formulae;
4

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EN 13445-6:2002/A1:2004 (E)
b) Finite Element Analysis
D.4.2 These rules apply only to components operating outside the creep range (i.e. when the nominal
design stress is time-independent).
D.4.3 The data on which these rules are based are valid for fatigue in non corrosive environment. It is
assumed that in th
...