SIST EN 13445-6:2014/A1:2016

SLOVENSKI STANDARD
SIST EN 13445-6:2009/oprA1:2014
01-marec-2014
1HRJUHYDQHWODþQHSRVRGHGHO=DKWHYH]DNRQVWUXLUDQMHLQSURL]YRGQMRWODþQLK
SRVRGLQWODþQLKGHORYSRVRGHL]QRGXODUQHOLWLQH'RSROQLOR$
Unfired pressure vessels - Part 6: Requirements for the design and fabrication of
pressure vessels and pressure parts constructed from spheroidal graphite cast iron
Unbefeuerte Druckbehälter - Teil 6: Anforderungen an die Konstruktion und Herstellung
von Druckbehältern und Druckbehälterteilen aus Gusseisen mit Kugelgraphit
Récipients sous pression non soumis à la flamme - Partie 6: Exigences pour la
conception et la fabrication des récipients sous pression et des parties sous pression
moulés en fonte à graphite sphéroïdal
Ta slovenski standard je istoveten z: EN 13445-6:2009/prA1
ICS:
23.020.30 7ODþQHSRVRGHSOLQVNH Pressure vessels, gas
MHNOHQNH cylinders
SIST EN 13445-6:2009/oprA1:2014 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 13445-6:2009/oprA1:2014

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SIST EN 13445-6:2009/oprA1:2014


EUROPEAN STANDARD
DRAFT
EN 13445-6:2009
NORME EUROPÉENNE

EUROPÄISCHE NORM
prA1
December 2013
ICS 23.020.30
English Version
Unfired pressure vessels - Part 6: Requirements for the design
and fabrication of pressure vessels and pressure parts
constructed from spheroidal graphite cast iron
Récipients sous pression non soumis à la flamme - Partie Unbefeuerte Druckbehälter - Teil 6: Anforderungen an die
6: Exigences pour la conception et la fabrication des Konstruktion und Herstellung von Druckbehältern und
récipients sous pression et des parties sous pression Druckbehälterteilen aus Gusseisen mit Kugelgraphit
moulés en fonte à graphite sphéroïdal
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 13445-6:2009. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13445-6:2009/prA1:2013: E
worldwide for CEN national Members.

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SIST EN 13445-6:2009/oprA1:2014
EN 13445-6:2009/prA1:2013 (E)

Contents Page
Foreword .3
Contents .4
1 Clause 1 Scope .4
2 Clause 2 Normative references .4
3 Table 3.3.1 .5
4 Clause 5.1 .5
6 Clause 5.2.2 .7
5.2.2.1 Principle .7
7 Clause 5.3.2 . 11
8 Table 7.1.1 . 12
9 Clause 7.1.5 . 12
10 Clause 7.1.8 . 12
11 Clause 7.2.2.1 . 12
12 Clause 7.2.2.2 . 12
13 Clause 8.1 . 13
14 Table A.2.1-1 . 13
15 Annex B . 13
16 Annex D . 13
17 D.4.4 and D.4.5 . 13
18 Table D.2 . 14
19 Clause D.8 . 14
20 Annex H . 14
Annex H (normative) Experimental cyclic pressure testing procedure . 15

2

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EN 13445-6:2009/prA1:2013 (E)

Foreword
This document (EN 13445-6:2009/prA1:2013) 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.

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EN 13445-6:2009/prA1:2013 (E)


Contents
Insert the following headings in the contents list:
7.2.2.2 Hydraulic test pressure from a combination of parts in different materials or fabrication methods
H.1.1 Experimental methods and other design methods
H.4 Allowable number of cycles at higher cyclic pressure
Y.4 List of corrected pages of issue 4

1 Clause 1 Scope
Delete the existing paragraph 1 and substitute the revised scope as follows:
This European Standard specifies requirements for the design, materials, manufacturing and testing of pressure
vessels and pressure vessel parts intended for use with a maximum allowable pressure, PS, equal or less than:
 100 bar when containing gases in group 1 or 2
 100 bar when containing liquids in group 1
 1000 bar when containing liquids in group 2,
 and shell wall thicknesses not exceeding 60 mm, which are constructed of ferritic or austenitic spheroidal
graphite cast iron. The thickness limitation of the shell does not apply to thickness of flanges, reinforcements,
bosses etc.
2 Clause 2 Normative references
Delete the existing clause 2 and substitute the following:
EN 287-6, Qualification test of welders — Fusion Welding — Part 6: Cast iron
EN 764-2:2012, Pressure equipment — Part 2: Quantities, symbols and units
EN 764-5:2013, Pressure equipment — Part 5: Compliance and inspection documentation of materials
EN 837-1:1996, Pressure gauges — Part 1: Bourdon tube pressure gauges — Dimensions, metrology,
requirements and testing
EN 837-3:1996, Pressure gauges — Part 3: Diaphragm and capsule pressure gauges — Dimensions, metrology,
requirements and testing
EN 1011-8:2004, Welding — Recommendations for welding of metallic materials — Part 8: Welding of cast irons
EN 1369:2012, Founding — Magnetic particle inspection
EN 1370:2011, Founding — Examination of surface condition
EN 1371-1:2011, Founding — Liquid penetrant testing — Part 1: Sand, gravity die and low pressure die castings
EN 1559-1:2011, Founding — Technical conditions of delivery — Part 1: General
EN 1559-3:2011, Founding — Technical conditions of delivery — Part 3: Additional requirements for iron castings
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EN 13445-6:2009/prA1:2013 (E)

EN 1563:2011, Founding — Spheroidal graphite cast irons
EN 12680-3:2011, Founding — Ultrasonic testing — Part 3: Spheroidal graphite cast iron castings.
EN 12681:2003, Founding — Radiographic examination
EN 13445-1:2009, Unfired pressure vessels — Part 1: General
EN 13445-3:2009, EN 13445-3:2009/A1:012, Unfired pressure vessels — Part 3: Design
EN 13445-5:2009, EN 13445-5:2009/A1:2011; EN 13445-5:2009/A2:2011; EN 13445-5:2009/A3:2011; EN 13445-
5:2009/A4:2012, Unfired pressure vessels — Part 5: Inspection and testing
EN 13835:2012, Founding — Austenitic cast irons
EN 15776:2011, Unfired pressure vessels. Requirements for the use of cast irons with an elongation after fracture
equal or less than 15 %
EN ISO 945-1:2008/Cor. 1:2010, Microstructure of cast irons — Part 1: Graphite classification by visual analysis
(ISO 945-1:2008/Cor. 1:2010)
EN ISO 8062-1:2007, Geometrical product specifications (GPS) — Dimensional and geometrical tolerances for
moulded parts — Part 1: Vocabulary (ISO 8062-1:2007)
EN ISO 8062-3:2007, Geometrical product specifications (GPS) — Dimensional and geometrical tolerances for
moulded parts — Part 3: General dimensional and geometrical tolerances and machining allowances for castings
(ISO 8062-3:2007)
EN ISO 15614-3:, Specification and qualification of welding procedures for metallic materials — Welding procedure
test — Part 3: Fusion welding of non-alloyed and low-alloyed cast irons (ISO 15614-3:2008)
This European standard, EN 13445-6, does not include lamellar graphite cast iron grades for ferritic and austenitic
grades, which are explicitly excluded. Requirements for the use of cast irons with an elongation after fracture equal
or less than 15 % are given in EN 15776 [1].

3 Table 3.3.1
Insert the following rows:
Required thickness of cover (Annex G) mm
e
c
Required thickness of flange (Annex G) mm
e
f

4 Clause 5.1
Delete the existing paragraphs 1 and 2 and substitute the following:
All cast iron grades subject to internal or external pressure shall comply with EN 1563:2012 for ferritic spheroidal
graphite cast iron and EN 13835:2012 for austenitic spheroidal graphite cast iron.
The material grades listed in Table 5.1-1 and Table 5.1-2 may be produced in the as-cast or heat treated condition
(see EN 1563:2012, Clause 6).



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EN 13445-6:2009/prA1:2013 (E)


Delete the existing note and substitute the following:
NOTE The use of materials working in the creep domain is not applicable to this standard since stress ranges are limited to
elastic material behaviour.


5 Tables 5.1.1 and 5.1.2

Delete the existing tables and substitute the following:


Table 5.1-1 — Allowable material grades for usual design temperatures (-10 °C up to 300 °C)
a
Material standard Design temperature limits
Material designation
°C
Symbol Number
EN-GJS-350-22-RT 5.3101
-10 ≤ TS ≤ 300
EN-GJS-350-22 5.3102 -10 ≤ TS ≤ 300
EN 1563:2012 EN-GJS-400-18-RT 5.3104 -10 ≤ TS ≤ 300
EN-GJS-400-18 5.3105 -10 ≤ TS ≤ 300
EN-GJS-450-18 5.3108 -10 ≤ TS ≤ 300
a
  When materials specified in these tables are not available, other suitable materials may be used when the technical documentation defining
the characteristics of the materials has been accepted in accordance with the requirements for European approval for materials (EAM) or
particular material appraisal (PMA).

Table 5.1-2 — Allowable material grades for low or high temperature design conditions
a
Design temperature limits °C
Material designation
Material standard


Symbol Number

EN-GJS-350-22-LT 5.3100 -40 ≤ TS ≤ 300
EN 1563:2012
EN-GJS-400-18-LT 5.3103 -20 ≤ TS ≤ 300
EN-GJSA-XNiMn23-4 5.3501 -196 ≤ TS ≤ 300
EN 13835:2012 EN-GJSA-XNi22 5.3503 -40 ≤ TS ≤ 540
EN-GJSA-XNiMn13-7 5.3506 -40 ≤ TS ≤ 300
a
  When materials specified in these tables are not available, other suitable materials may be used when the technical
documentation defining the characteristics of the materials has been accepted in accordance with the requirements for European
approval for materials (EAM) or particular material appraisal (PMA).


6

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6 Clause 5.2.2
Delete the existing 5.2 and substitute the following:
5.2.2.1 Principle
The loadings to be accounted for shall be in accordance with EN 13445-3:2011, Clause 5.
The service conditions of Clause 4 shall be accounted for.
Design methods and design of specific components shall be in accordance with this European Standard and, when
applicable, with the relevant clauses of EN 13445-3:2011 except as otherwise noted in this Part 6. For castings
containing no welds, the weld joint coefficient z=1 shall be used for determining the required thickness. For fatigue,
designs shall be checked against Annex D simplified or detailed method of this standard. Attention is drawn to
radius requirements according to 5.2.2.7.
NOTE 1 Testing factors (0, 8 or 0, 9) are already accounted for in determining nominal design stress in Clause 5.2.2.2 of this
Part 6.
NOTE 2 For non-circular sections (rectangular sections), see EN13445-3 Clause 15 (see remark about fatigue design and
radius requirements in 5.2.2.1).
If the geometry of the component or the loading case does not allow calculation by the formulas given in
EN 13445-3:2011 and Annex G of this standard, design by analysis (DBA) (see Annex E) or design by experiment
(DBE) shall be applied.
Depending on the complexity of the component, the loading conditions and the level of NDT testing, the designer
may choose one of the following available design methods mentioned below. Guidance is given on the correlation
between safety factor, testing factor and the method to assess dynamic loading (see Table 5.2-1).
5.2.2.1.1 Static loading
In order to design the part for static loading, the following options can be considered by the designer.
5.2.2.1.1.1 Design by formula (DBF)
Equations for the calculation of the various components of the pressure part are given in EN 13445-3:2011 and
Annex G. Annex G gives additional equations for non-standard shaped parts often used in casting design.
5.2.2.1.1.2 Design by analysis (DBA)
The following applies:
1) decide whether the direct route (limit load – EN 13445-3:2011, Annex B) or the stress categorisation
method (EN 13445-3:2011, Annex C) will be followed. Decide whether linear or non-linear approach will
be used;
2) base modelling and interpretation of calculation results shall be based on analysis thicknesses (e ) and
a
material characteristics at operation temperature;
3) for interpretation of calculation results, follow the evaluation procedures and assessment criteria in order
to evaluate the fitness for purpose of the real structure. These design checks and related procedures are
typical for the failure mode to be dealt with. For the different failure modes see EN 13445-3:2011.
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5.2.2.1.1.3 Design by experiment (DBE)
Where design by equations according to EN 13445-3:2011 is not considered appropriate due to complex shape of
the component, a hydraulic burst test to determine the analysis thickness ea and the minimum thickness e shall
min
be performed according to the procedure in 5.2.2.1.1.3. This test is also a part of the technical documentation.
This design method may be used without additional calculations if P · V < 6000 bar⋅L.
d
If P · V > 6000 bar⋅L for the complete vessel, this method can be used in addition to DBA or DBF.
d
The minimum required thickness at a specific location is given by:
1
n
 S PS R 
⋅ ⋅
m(3)
 
e = e ⋅ (5-1)
a act
 
P ⋅ R ⋅ C ⋅ C ⋅ C
b,act p0,2 Q T e
 
e ≥ e + c (5-2)
min a
where
e is the minimum measured wall thickness at the specific location;
act.
R is in accordance with Annex A;
p0,2
P is the actual obtained value of burst pressure or the highest pressure during the test;
b,act
n = 1 for curved surfaces (cylinders, spheres) or cones with angles α ≤ 60°, stayed surfaces and stressed
parts if bending stress is less than 2/3 of the total stress;
n = 2 for all other surfaces.
Determination of the hydraulic burst pressure and maximum allowable pressure for static loading
A random sample from the production of the vessel or vessel part shall be taken for the burst test or to determine
the maximum allowable working conditions. The procedure shall be as follows:
1) verify that the part or vessel to be tested is cast according to the specified drawing and any revision
thereof. The material used shall be the same type and grade as for the production part;
2) verify that the part or vessel is machined to the same dimensions as the production part;
3) verify that the material properties meet the requirements of 5.1. For each casting used for the burst test, 3
test pieces for tensile testing, and, if applicable, for impact testing, shall be separately cast and tested. The
results and the calculated average tensile strength shall be certified in accordance with 6.5;
4) the wall thicknesses of the entire casting shall be measured (at least one measurement per
100 mm x 100 mm). The results shall be marked on the casting at the location of the measurement or on
the drawing;
5) verify that a calibrated pressure gauge is used; maximum tolerance shall conform to at least class 1 or
better according to EN 837-1 and EN 837-3. The scale of the pressure gauge shall be approximately 4/3 of
the anticipated burst pressure;
6) the pressure shall be increased in a controlled manner until the minimum required burst pressure is
obtained:
n
R
 e 
m(3)
act
P ≥ PS ⋅   (5-3)
b
 
f e − c
 min 
8

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EN 13445-6:2009/prA1:2013 (E)

The pressure shall be increased further in a controlled manner until rupture occurs. Record burst pressure
P , test date, material specification, details of material, part number, and wall thickness e measured at
b,act act
burst location. A relation with the actual burst pressure P , which can be higher than P on account of a
b,act b
better stress distribution, and the maximum allowable pressure PS, can be deducted according the
converted Equation 5-3, replacing P by P
b b,act
n
f  e − c 
min
 
PS ≤ P ⋅ (5-4)
b,act
 
R e
m(3)  act 
7) if a part fails to meet any of those requirements, a second identical production part may undergo the same
test procedure. If this second part meets the test requirements, this part may be accepted after
investigation of the cause of failure
...