SIST EN 13480-3:2002/A2:2007
(Amendment)Metallic industrial piping - Part 3: Design and calculation
Metallic industrial piping - Part 3: Design and calculation
This part of EN 13480 describes the requirements for the design and calculation of industrial metallic piping systems, including supports.
Metallische industrielle Rohrleitungen - Teil 3: Konstruktion und Berechnung
Tuyauteries industrielles métalliques - Partie 3: Conception et calcul
Kovinski industrijski cevovodi – 3. del: Konstruiranje in izračun
Ta del standarda EN 13480 opisuje zahteve za konstruiranje in izračun industrijskih kovinskih cevnih sistemov, vključno s podporami.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13480-3:2002/A2:2007
01-april-2007
.RYLQVNLLQGXVWULMVNLFHYRYRGL±GHO .RQVWUXLUDQMHLQL]UDþXQ
Metallic industrial piping - Part 3: Design and calculation
Metallische industrielle Rohrleitungen - Teil 3: Konstruktion und Berechnung
Tuyauteries industrielles métalliques - Partie 3: Conception et calcul
Ta slovenski standard je istoveten z: EN 13480-3:2002/A2:2006
ICS:
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
SIST EN 13480-3:2002/A2:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13480-3:2002/A2:2007
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SIST EN 13480-3:2002/A2:2007
EUROPEAN STANDARD
EN 13480-3:2002/A2
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2006
ICS 23.040.01
English Version
Metallic industrial piping - Part 3: Design and calculation
Tuyauteries industrielles métalliques - Partie 3: Conception Metallische industrielle Rohrleitungen - Teil 3: Konstruktion
et calcul und Berechnung
This amendment A2 modifies the European Standard EN 13480-3:2002; it was approved by CEN on 25 September 2006.
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, Romania,
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
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13480-3:2002/A2:2006: E
worldwide for CEN national Members.
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Contents Page
Foreword.3
2 Normative references .4
6.6 Bolted flange connections.4
D.1 Purpose.5
D.4.1 Introduction.5
Annex P (informative) Bolted flange connections – Application of EN 1591.6
P.1 Introduction.6
P.2 Scope .7
P.2.1 General.7
P.2.2 Materials .7
P.2.3 Loadings .7
P.2.4 Assumptions .7
P.3 Application of EN 1591.8
P.3.1 Calculations.8
P.3.2 Gasket coefficients.8
P.3.3 Tightening.9
Bibliography .68
2
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Foreword
This document (EN 13480-3:2002/A2:2006) has been prepared by Technical Committee CEN/TC 267
“Industrial piping and pipelines”, the secretariat of which is held by AFNOR.
This Amendment to the European Standard EN 13480-3:2002 shall be given the status of a national standard,
either by publication of an identical text or by endorsement, at the latest by May 2007, and conflicting national
standards shall be withdrawn at the latest by May 2007.
This document amends Clauses 2, 6.6, 13.3.3.9, D.1 and D.4.1 of EN 13480-3:2002.
This document contains informative Annex P to be added to EN 13480-3:2002.
This document includes the text of the amendment itself. The corrected pages of EN 13480-3 are delivered as
Issue 8 of the standard.
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, Romania, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.
3
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
2 Normative references
Add the date of publication for the following references to read the following:
EN 287-1:2004, Qualification test of welders — Fusion welding — Part 1: Steels
EN 1591-1:2001, Flanges and their joints — Design rules for gasketed circular flange connections — Part 1:
Calculation method
EN 12953-3:2002, Shell boilers — Part 3: Design and calculation for pressure parts EN 13480-1:2002,
Metallic industrial piping — Part 1: General
EN 13480-1:2002, Metallic industrial piping — Part 1: General
EN 13480-2:2002, Metallic industrial piping — Part 2: Materials
Add the following references:
EN 288 (all parts), Specification and approval of welding procedures for metallic materials
ENV 1591-2:2001, Flanges and their joints — Design rules for gasketed circular flange connections — Part 2:
Gasket parameters
Replace 6.6 of EN 13480-3:2002 with the following:
6.6 Bolted flange connections
The design of flanges other than flat face flanges shall be performed in accordance with the following:
if a standard flange is specified in a European Standard, and no further requirement is given, the flange
shall be selected by means of the P/T rating;
— if a non-standard flange is used, the design shall be done by applying the calculation method in
EN 1591-1, using for example Annex P, or by applying the algorithm shown in the Taylor-Forge method.
If there is a specific requirement on tightness for the flange connection, this shall be calculated in accordance
with EN 1591-1, using Annex P.
Allowable stresses for bolts shall be in accordance with Annex D.
The designer shall consider section loadings caused by the connected piping system.
NOTE 1 The Taylor-Forge method does not ensure tightness.
NOTE 2 The algorithm given in EN 1591-1 includes a consideration of section loadings.
NOTE 3 The bolt torque should be specified by the designer.
NOTE 4 Attention should be paid in such cases to the method of tightening. Guidance of scatter band when applying
the different methods of tightening are given in EN 1591-1.
4
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Replace 13.3.3.9 of EN 13480-3:2002 with the following:
13.3.3.9 The dimensioning of intermediate or secondary steelwork supplied for supporting the pipe shall be
based on good industrial practice as defined in ENV 1993.
Replace D.1 of EN 13480-3:2002 with the following:
D.1 Purpose
This annex gives requirements for the design of circular bolted flange connections. Flanges with full face and
narrow face gaskets, subject to internal and external pressure are included, as are reverse flanges and seal
welded flanges. The requirements provided in this clause are based on the well established Taylor Forge rules.
Replace D.4.1 of EN 13480-3:2002 by the following:
D.4.1 Introduction
Circular bolted flanged connections, either sealed with a gasket or seal welded, used in the construction of
vessels to this European Standard shall conform to either:
an appropriate European Standard for pipework flanges, and the requirements of D.4.2, or
the requirements for bolted flanged connections specified in this clause.
Alternative rules for bolted flanges connections are given in Annex P.
Both flanges of a mating pair shall be designed to the same standard or set of requirements. This applies
when one of the pair is a bolted flat end or cover. The requirements for bolted flat ends in Clause 10 and
bolted domed ends in Clause 12 are considered part of the same set of requirements as this clause.
5
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Annex P
(informative)
Bolted flange connections – Application of EN 1591
P.1 Introduction
According to EN 13480-3, two methods may be used to check bolted connections:
the Taylor Forge method and
the procedure detailed in EN 1591-1 and ENV 1591-2.
However, the proper application of this European Standard to bolted connections in the field of piping requires
additional explanations.
The following two parts of European Standard EN 1591, based on German developments, define an analytical
procedure for the design of bolted flange connections with gasket:
EN 1591-1, Flanges and their joints — Design rules for gasketed circular flange connections —
Part 1: Calculation method;
ENV 1591-2, Flanges and their joints — Design rules for gasketed circular flange connections —
Part 2: Gasket parameters.
This procedure allows the verification of the connection taking account of strength criteria and tightness
criteria.
The parameters taken into account are as follows:
fluid pressure;
mechanical strength of flange, bolting and gasket;
gasket coefficients;
bolt nominal loads
and, other than the Taylor-Forge method (see EN 13480-3:2002, 6.6), the following additional factors:
operating conditions and specifically creep/relaxation behaviour;
dispersions due to initial tightening where relevant;
variations of gasket loading due to the deformation of the different components of the connection;
effects of the connected shell or piping;
effects of external axial forces and moments;
effects of temperature difference between bolts and flanges.
6
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
P.2 Scope
P.2.1 General
This procedure shall apply to the following arrangements:
two circular flanges (identical or different);
four identical bolts, as a minimum, regularly spaced;
a circular gasket entirely within the circle enclosed by the bolt holes.
The procedure does not apply to metal-metal connections.
P.2.2 Materials
Bolt and flange materials shall conform to the requirements of EN 13480-2 regarding ductility properties.
Where these requirements are not fulfilled, lower nominal design stress shall be used.
P.2.3 Loadings
The following loadings are taken into account in this procedure:
internal and external fluid pressure;
external loads: axial forces and bending moments (equivalent axial load);
thermal expansion of flanges, bolts and gasket.
P.2.4 Assumptions
P.2.4.1 The deformations of the cross-section of the plate are not taken into account. Only the rotation of
the cross-section is considered.
P.2.4.2 The plate of an integral flange is connected to a cylindrical shell or to an equivalent cylindrical
shell (conical or spherical shell).
P.2.4.3 The effective width b of contact between the gasket and the flanges may be less than the
Ge
actual width of the gasket. This effective width shall be calculated for seating condition and considered as
constant for all other conditions.
P.2.4.4 The modulus of elasticity E of the gasket is a function of the applied compressive stress.
G
P.2.4.5 Creep behaviour of the gasket is taken into account using the factor P .
QR
P.2.4.6 The thermal and mechanical deformations of flanges, bolts and gasket are considered.
P.2.4.7 External moments are taken into account as equivalent axial bolt loads.
P.2.4.8 Transitions between a condition to another lead to variations of bolt and gasket loads.
P.2.4.9 Acceptance of component loadings is based on limit analysis which covers failure by gross plastic
deformation.
7
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
P.2.4.10 The following is not taken into account or covered by the procedure:
bending stiffness of bolts;
creep of flanges and bolts except through nominal design stress and thermal expansion factors;
external torsion moments and external shear loads.
P.3 Application of EN 1591
P.3.1 Calculations
The minimum tightening load for the required tightening of bolts shall be calculated by successive iterations.
Internal loads due to initial tightening shall be calculated for each condition (initial tightening, proof test
condition and operating conditions) and combined with external loads.
Safety factors shall be those defined by EN 13480-3:2002, Clause 5. However for seating condition, factor for
strength test condition shall apply.
P.3.2 Gasket coefficients
The recommended gaskets for industrial piping are given in Table P.1.
NOTE 1 For more information the gasket manufacturer should be contacted.
NOTE 2 Legend of tables:
NA: not applicable;
ND: not defined.
Gasket reference: Example: 1-09-101-1:
1-09 = see Table P.2;
101-1 = joint origin (manufacturer or other).
P.3.2.1 Gasket maximum allowable stress Q .
smax
The coefficients determined according to EN 13555 are given in Table P.2 to Table P.29 (room temperature
and operating temperature).
In these tables:
P is the test pressure in the sample;
S is the gasket pressure.
ai
P.3.2.2 Minimum stress Q to be applied at room temperature (seating condition) in order to fulfil the
minL
requirements regarding leak tightness class for the fluid under consideration.
The values determined according to EN 13555 (Helium tightness test at room temperature) are given in Table
P.2 to Table P.29.
8
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
NOTE In Tables P.3 to P.29, Q is given in MPa.
minL
P.3.2.3 Minimum stress Q to be applied at room temperature (operating conditions) in order to fulfil
sminL
the requirements regarding leak tightness class for the fluid under consideration.
The values determined according to EN 13555 (Helium tightness test at room temperature) are given in
Table P.2 to Table P.29.
NOTE In Tables P.3 to P.29, Q is given in MPa.
sminL
P.3.2.4 Modulus of elasticity
E is the modulus of elasticity when compression is released and for a maximal stress equal to Q .
G 0
P.3.2.5 Creep/relaxation parameter
The parameter P is given in Table P.2 to Table P.29. This parameter is used instead of the previous creep
QR
factor called g where permitted by the next revision of EN 1591-1.
c
P.3.3 Tightening
The initial tightening shall be greater than the minimum tightening required at room temperature to comply to
the requirements of the tightness class for the fluid and pressure considered.
However this tightening shall not lead to a gasket stress greater than the allowable value at room temperature.
In addition, calculations shall take into account the tolerances on tightening due to tightening procedure and
the used equipment.
9
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Table P.1 – Recommended gaskets for industrial piping
Maximum
EN 1514 c EN 12560 Chemical Maximum PN max CLASS max Surface finish
Gasket type internal fluid
(PN flanges) (CLASS Flanges) compatibility temperature (EN 1514) (EN 12560) (Ra)
pressure (bar)
All fluids (to be used
3,2 µm to
Fibre 1514-1 12560-1 carefully for steam: risk 250 °C 50 63 900
12,5 µm
of hydrolysis)
350 °C (in oxidant
3,2 µm
environment)
Graphite 1514-1 12560-1 Risk of oxidation 50 63 900
550 °C with inhibitor or
to 12,5 µm
non oxidant environment
Pure PTFE: 120 °C 3,2 µm to
PTFE 1514-1 12560-1 All fluids 50 63 900
Modified PTFE 225 °C 12,5 µm
12,5 µm
> 600 °C
900 for P < 12 bar
(vermiculite insert)
Depending on insert, (without internal 6,4 µm
100
600 °C
spiral and ring materials ring) for P > 20 bar
Spiral wound gasket 1514-2 12560-2 400 (with internal
(risk of oxidation with 2500 3,2 µm
(graphite insert)
ring
graphite insert) (with internal
for hard conditions
250 °C
ring) 1,6 µm
(PTFE insert)
for vacuum
Depending on internal
600 °C (may be limited 3,2 µm to 6,4 µm
and covering materials
Kammprofil 1514-6 12560-6 to 260 °C, by a PTFE 400 100 2500
1,6 µm
(risk of oxidation with
covering for example) for vacuum
graphite covering)
1514-4 (Metal 12560-4 (Metal 0,8 µm to 3,2 µm
jacketed) jacketed) (not covered)
Metal jacketed Most of industrial fluids Depending on covering > 400 100 2500
1514-7 (Covered 12560-7 (Covered 1,6 µm to 12,5 µm
metal jacketed) metal jacketed)
(covered)
12560-5 (RTJ)
Solid metal 1514-4 12560-4 (Flat Depending on material High 500 100 2500 1,6 µm
metallic gaskets)
Ring joint Depending on material Depending on material > 400 1,6 µm
Expanded
All fluids 600 °C 500
1,6 to 6,4 µm
graphite
10
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Table P.2 – Gasket type code
Table of this
Classification Gasket family ENV 1591-2
Gasket type European
from EN 1514 (ENV 1591-2) Table
Standard
EN 1514-1 Modified PTFE Non metallic flat gasket 1 P.5 and P.6
EN 1514-1 Non-asbestos fibre (aramid/glass) Non metallic flat gasket 1 P.3
EN 1514-1 Expanded graphite with Non metallic flat gasket 1 P.4
perforated metal insertion
EN 1514-2 Standard spiral wound gasket Spiral wound gasket 3 P.9
with external ring
EN 1514-2 Standard spiral wound gasket Spiral wound gasket 3 P.8
with internal and external rings
EN 1514-2 Low stress spiral wound gasket Spiral wound gasket 3 P.7
with internal and external rings
EN 1514-4 Metal jacketed with graphite filler Metal jacketed gasket 6 P.12
and stainless steel shell
EN 1514-4 Corrugated inlaid gasket Non metallic flat gasket 7 P.11
(graphite/stainless steel)
EN 1514-6 Kammprofile gasket for use with Grooved steel gasket with 2 P.10
steel flanges (graphite/stainless soft layers on both sides
steel)
EN 1514-7 Covered metal jacketed Covered metal jacketed 5 P.13
(graphite/graphite/stainless steel) gasket
EN 1514-1 Expanded graphite with metallic Flat gasket with metal 1 P.14, P.27
sheets laminated in thin layers insertion
withstanding high stresses
EN 1514-1 Modified PTFE sheet material Non metallic flat gasket 1 P.15, P.17,
P.23
EN 1514-1 Non-asbestos fibre with binder Non metallic flat gasket 1 P.16, P.18,
e ≥ 1 mm P.19, P.22
G
EN 1514-1 Expanded graphite with adhesive Flat gasket with metal 1 P.20
perforated metal insertion insertion
EN 1514-2 PTFE Standard spiral wound Spiral wound gasket 3 P.24
gasket with inner and outer
support ring
EN 1514-3 PTFE envelope gasket PTFE envelope gasket 1 P.28
EN 1514-4 Metal jacketed gasket with Metal jacketed gasket 6 P.26
graphite
EN 1514-4 Corrugated gasket with graphite Corrugated gasket 7 P.29
EN 1514-4 Expanded graphite with metallic Flat gasket with metal 1 P.14, P.27
sheets laminated in thin layers insertion
withstanding high stresses
EN 1514-6 Kammprofile gasket with bonded Grooved steel gasket with 2 P.21
graphite layers soft layers on both sides
EN 1514-7 Covered metal jacketed gasket Covered metal jacketed 5 P.25
with graphite (outer ring) gasket
11
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Table P.3 – Gasket 1-09-101-1 – Non-asbestos fibre (aramid/glass) e ≥≥ 1 mm
≥≥
G
Gasket coefficients from mechanical tests
Coefficient Temperature Values
Room 150 MPa
Q
200 °C 60 MPa
smax
250 °C 50 MPa
Initial load: 150 MPa
Room
Average for g : 0,72
c
g
c
Initial load: 60 MPa
200 °C
Average for g : 0,29
(for a simulated stiffness of
c
500 kN/mm)
Initial load: 50 MPa
250 °C
Average for g : 0,28
c
Initial load: 150 MPa
Room
Average for P : 0,985
QR
P
QR
Initial load: 60 MPa
200 °C
(for a simulated stiffness of
Average for P : 0,805
QR
500 kN/mm)
Initial load: 50 MPa
250 °C
Average for P : 0,775
QR
E
G
Q
0
Room 200 °C 250 °C
20 MPa 979 MPa 4 898 MPa 3 731 MPa
30 MPa 1 414 MPa
40 MPa 2 153 MPa 4 990 MPa 4 159 MPa
50 MPa 2 972 MPa
60 MPa 4 182 MPa 6 023 MPa 4 024 MPa
80 MPa 8 412 MPa
100 MPa 15 159 MPa
120 MPa 26 392 MPa
140 MPa 40 379 MPa
12
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Table P.3 (concluded)
Class of tightness from tightness tests
P = 10 bar – “Simplified test” values
S =320 MPa
a1
Q
Tighness Class
minL
Q
sminL,Sa1
High tightness 15,5 10
Very high tightness 60 10
P = 40 bar – Average of “full tests” values
S = S = S = S = S = S =
a1 a2 a3 a4 a5 a6
Tighness
20 MPa 40 MPa 60 MPa 80 MPa 105 MPa 160 MPa
Q
minL
Class
Q Q Q Q Q Q
sminL,Sa1 sminL,Sa2 sminL,Sa3 sminL,Sa4 sminL,Sa5 sminL,Sa6
Normal 11,6 10 10 10 10 10 10
High
34,5 NA 10 10 10 10 10
tightness
Very high
81 NA NA NA 40 33 17
tightness
P = 80 bar – Average of “full test” and “simplified test” values
S = S = S = S = S = S =
a1 a2 a3 a4 a5 a6
20 MPa 40 MPa 60 MPa 80 MPa 105 MPa 160 MPa
Q
Tighness Class
minL
Q Q Q Q Q Q
sminL,Sa1 sminL,Sa2 sminL,Sa3 sminL,Sa4 sminL,Sa5 sminL,Sa6
Normal 10 10 10 10 10 10 10
High tightness 43 NA 10 10 10 10 10
Very high tightness 95 NA NA NA NA 38 19,4
13
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Table P.4 – Gasket 1-05-101-1 – Expanded graphite with perforated metal insertion
Gasket coefficients from mechanical tests
Coefficient Temperature Values
Room 200 MPa
200 °C 150 MPa
Q
smax
300 °C 140 MPa
450 °C 120 MPa
Initial load: 200 MPa
Room
Average for g : 0,98
c
g
c
Initial load: 140 MPa
300 °C
(for a simulated stiffness of Average for g : 0,12
c
500 kN/mm)
Initial load: 120 MPa
450 °C
Average for g : 0,08
c
Initial load: 200 MPa
Room
Average for P : 1
QR
P
QR
Initial load: 140 MPa
(for a simulated stiffness of
300 °C
Average for P : 0,775
QR
500 kN/mm)
Initial load: 120 MPa
450 °C
Average for P : 0,62
QR
E
G
Q
0
Room 200 °C 300 °C 450 °C
20 MPa 198 MPa 591 MPa 416 MPa 943 MPa
30 MPa 397 MPa
40 MPa 675 MPa 1 579 MPa 1 396 MPa 2 482 MPa
50 MPa 1 043 MPa
60 MPa 1 536 MPa 2 493 MPa 2 423 MPa 3 833 MPa
80 MPa 2 804 MPa 3 437 MPa 3 828 MPa 4 706 MPa
100 MPa 4 738 MPa 4 258 MPa 5 542 MPa 4 799 MPa
120 MPa 7 083 MPa 4 871 MPa 5 968 MPa
140 MPa 10 447 MPa
160 MPa 13 992 MPa
14
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Table P.4 (concluded)
Class of tightness from tightness tests
P = 10 bar – Average of two “simplified test” values
S =140 MPa
a1
Q
Tightness Class
minL
Q
sminL,Sa1
High tightness 23 10
Very high tightness 93 16
P = 40 bar – Average of “full tests” values
S = S = S = S = S = S =
a1 a2 a3 a4 a5 a6
Tightness
20 MPa 40 MPa 60 MPa 80 MPa 105 MPa 160 MPa
Q
minL
Class
Q Q Q Q Q Q
sminL,Sa1 sminL,Sa2 sminL,Sa3 sminL,Sa4 sminL,Sa5 sminL,Sa6
Normal 10 10 10 10 10 10 10
High
41 NA 10 10 10 10 10
tightness
Very high
139 NA NA NA NA NA 95
tightness
P = 80 bar –“Simplified test” values
S =140 MPa
a1
Q
Tightness Class
minL
Q
sminL,Sa1
High tightness 60 10
15
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Table P.5 – Gasket 1-10-100-1 – Modified PTFE
Gasket coefficients from mechanical tests
Coefficient Temperature Values
Room 50 MPa
Q
175 °C 40 MPa
smax
225 °C 25 MPa
Initial load: 50 MPa
Room
Average for g : 0,31
c
g
c
Initial load: 40 MPa
175 °C
(for a simulated stiffness of Average for g : 0,06
c
500 kN/mm)
Initial load: 25 MPa
225 °C
Average for g : 0,08
c
Initial load: 50 MPa
Room
Average for P : 0,84
QR
P
QR
Initial load: 40 MPa
175 °C
(for a simulated stiffness of
Average for P : 0,41
QR
500 kN/mm)
Initial load: 25 MPa
225 °C
Average for P : 0,365
QR
E
G
Q
0
Room 175 °C 225 °C
20 MPa 2 170 MPa 826 MPa 614 MPa
30 MPa 2 986 MPa
40 MPa 8 625 MPa 1 254 MPa 809 MPa
60 MPa 1 335 MPa 864 MPa
16
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SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Table P.5 (concluded)
Class of tightness from tightness tests
P = 10 bar – Average of “full tests” values
S =20 MPa S =40 MPa S =60 MPa S =80 MPa
a1 a2 a3 a4
Q
Tightness Class
minL
Q Q Q Q
sminL,Sa1 sminL,Sa2 sminL,Sa3 sminL,Sa4
High tightness 10 10 10 10 10
Very high tightness 17 10 10 10 10
P = 40 bar – Average of the four tests values or choice among the four values
S =20 MPa S =40 MPa S =60 MPa S =80 MPa
a1 a2 a3 a4
Q
Tightness Class
minL
Q Q Q Q
sminL,Sa1 sminL,Sa2 sminL,Sa3 sminL,Sa4
Normal 10 10 10 10 10
High tightness 12 10 10 10 10
Very high tightness 42 NA 38 10 10
P = 80 bar – Test values
S =80 MPa
a1
Q
Tightness Class
minL
Q
sminL,Sa1
High tightness 22 10
Very high tightness 37 10
17
---------------------- Page: 19 ----------------------
SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Table P.6 – Gasket 1-10-102-1 – Modified PTFE
Gasket coefficients from mechanical tests
Coefficient Temperature Values
Room 60 MPa
Q
175 °C 60 MPa
smax
225 °C 60 MPa
Initial load: 60 MPa
Room
Average for g : 0,44
c
g
c
Initial load: 60 MPa
175 °C
(for a simulated stiffness of Average for g : 0,09
c
500 kN/mm)
Initial load: 60 MPa
225 °C
Average for g : 0,06
c
Initial load: 60 MPa
Room
Average for P : 0,895
QR
P
QR
Initial load: 60 MPa
175 °C
(for a simulated stiffness of
Average for P : 0,5
QR
500 kN/mm)
Initial load: 60 MPa
225 °C
Average for P : 0,42
QR
E
G
Q
0
Room 175 °C 225 °C
20 MPa 1 924 MPa 1 164 MPa 1 263 MPa
30 MPa 2 587 MPa 1 569 MPa
40 MPa 3 894 MPa 1 682 MPa 2 178 MPa
50 MPa 6 378 MPa 2 553 MPa
60 MPa 9 750 MPa 2 217 MPa 3 170 MPa
18
---------------------- Page: 20 ----------------------
SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Table P.6 (concluded)
Class of tightness from tightness tests
P = 10 bar – Average of “full tests” values
S =20 MPa S =40 MPa S =60 MPa S =80 MPa
a1 a2 a3 a4
Q
Tightness Class
minL
Q Q Q Q
sminL,Sa1 sminL,Sa2 sminL,Sa3 sminL,Sa4
Normal 10 10 10 10 10
High tightness 17,3 11 10 10 10
Very high tightness 38,3 NA 17,2 10 10
P = 40 bar – Average of “full tests” values
S =20 MPa S =40 MPa S =60 MPa S =80 MPa
a1 a2 a3 a4
Q
Tightness Class
minL
Q Q Q Q
sminL,Sa1 sminL,Sa2 sminL,Sa3 sminL,Sa4
High tightness 16,4 10 10 10 10
Very high tightness 31 NA 10 10 10
P = 80 bar – “Simplified test” values
S =80 MPa
a1
Q
Tightness Class
minL
Q
sminL,Sa1
High tightness 26,2 10
Very high tightness 39,3 10
19
---------------------- Page: 21 ----------------------
SIST EN 13480-3:2002/A2:2007
EN 13480-3:2002/A2:2006 (E)
Table P.7 – Gasket 3-05-102-1 – Low stress spiral wound modified gasket with internal and external
rings
Gasket coefficients from mechanical tests
Coefficient Temperature Values
Room 126 MPa
Q
300 °C 126 MPa
smax
450 °C 126 MPa
Initial load: 60 MPa
Room
Average for g : 0,98
c
g
Initial load: 60 MPa
c
300 °C Procedure not suitable for this type
(for a simulated stiffness of
of gasket at this temperature
500 kN/mm)
Initial load: 60 MPa
450 °C Procedure not suitable for this type
of gasket at this temperature
Initial load: 60 MPa
Room
P
QR Average for P : 0,995
QR
(for a simulated stiffness of
300 °C -
500 kN/
...
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