EN 14917:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kompensatoren mit Metellischen Bälgen für DruckanwendungenCompensateurs de dilatation a soufflets métalliques pour tuyauteurs et appareils a pressionMetal bellows expansion joints for pressure applications23.040.99Drugi sestavni deli za cevovodeOther pipeline componentsICS:Ta slovenski standard je istoveten z:EN 14917:2009SIST EN 14917:2009en01-april-2009SIST EN 14917:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14917January 2009ICS 23.040.99 English VersionMetal bellows expansion joints for pressure applicationsCompensateurs de dilatation à soufflets métalliques pourappareils à pressionKompensatoren mit metallischen Bälgen fürDruckanwendungenThis European Standard was approved by CEN on 6 September 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14917:2009: ESIST EN 14917:2009

Categories of expansion joints . 119Annex B (normative)
Specification for materials 1.4828, 1.4876, 2.4360 and 2.4858 . 130Annex C (informative)
Incorporation of expansion joints into pressure vessels and piping . 135Annex D (informative)
Calculation methods for systems of pipes containing expansion joints . 153Annex E (informative)
Overview of the design of expansion bellows . 169Annex F (informative)
Procedure for setting-up a design fatigue curve . 174Annex G (informative)
Polynomial approximations for coefficients Cp, Cf, Cd . 183SIST EN 14917:2009

Required design data and information . 186Annex I (informative)
Expansion joints risk analyses . 187Annex J (informative)
Material properties and material groups . 189Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC . 195Bibliography . 197 SIST EN 14917:2009

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, Bulgaria, Cyprus, Czech Repub-lic, 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 the United Kingdom. SIST EN 14917:2009

materials EN 764-5:2002, Pressure equipment — Part 5: Compliance and inspection documentation of materials EN 970, Non-destructive examination of fusion welds — Visual examination EN 1092-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN desig-nated — Part 1: Steel flanges EN 1289:1998, Non-destructive examination of welds — Penetrant testing of welds — Acceptance levels EN 1290, Non-destructive examination of welds — Magnetic particle examination of welds EN 1291:1998, Non-destructive examination of welds — Magnetic particle testing of welds —
Acceptance levels EN 1418, Welding personnel — Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials EN 1435:1997, Non-destructive examination of welds — Radiographic examination of welded joints EN 1593, Non-destructive testing — Leak testing — Bubble emission techniques EN 1712:1997, Non-destructive examination of welds — Ultrasonic examination of welded joints — Accep-tance levels EN 1713, Non-destructive examination of welds — Ultrasonic examination — Characterization of indications in welds EN 1714:1997, Non-destructive examination of welds — Ultrasonic examination of welded joints EN 1779:1999, Non-destructive testing — Leak testing — Criteria for method and technique selection EN 10002-1, Metallic materials — Tensile testing — Part 1: Method of test at ambient temperature EN 10002-5, Metallic materials — Tensile testing — Part 5: Method of testing at elevated temperature EN 10028-1, Flat products made of steels for pressure purposes — Part 1: General requirements
EN 10216-2, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties
EN 10216-3, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine grain steel tubes
EN 10216-4, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 4: Non-alloy and alloy steel tubes with specified low temperature properties EN 10217-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel tubes with specified room temperature properties EN 10217-2, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-3, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine grain steel tubes EN 10217-4, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 4: Electric welded non-alloy steel tubes with specified low temperature properties EN 10217-5, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 5: Submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-6, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 6: Submerged arc welded non-alloy steel tubes with specified low temperature properties EN 10222-2, Steel forgings for pressure purposes — Part 2: Ferritic and martensitic steels with specified elevated temperature properties EN 10222-3, Steel forgings for pressure purposes — Part 3: Nickel steels with specified low temperature properties EN 10222-4, Steel forgings for pressure purposes — Part 4: Weldable fine grain steels with high proof strength EN 10253-2, Butt-welding pipe fittings — Part 2: Non alloy and ferritic alloy steels with specific inspection re-quirements EN 10269, Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties EN 10272, Stainless steel bars for pressure purposes SIST EN 14917:2009

Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels — Corrosion test in media containing sulfuric acid (ISO 3651-2:1998) EN ISO 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding ex-cluded) — Quality levels for imperfections (ISO 5817:2003, corrected version: 2005, including Technical Cor-rigendum 1:2006) EN ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method (ISO 6506-1:2005) EN ISO 6520-1, Welding and allied processes — Classification of geometric imperfections in metallic
materials — Part 1: Fusion welding (ISO 6520-1:2007) EN ISO 9445:2006, Continuously cold-rolled stainless steel narrow strip, wide strip, plate/sheet and cut lengths — Tolerances on dimensions and form (ISO 9445:2002) EN ISO 9606-4, Approval testing of welders — Fusion welding — Part 4: Nickel and nickel alloys (ISO 9606-4:1999) EN ISO 15609-1, Specification and qualification of welding procedures for metallic materials — Welding pro-cedure specification — Part 1: Arc welding (ISO 15609-1:2004) EN ISO 15610, Specification and qualification of welding procedures for metallic materials —
Qualification based on tested welding consumables (ISO 15610:2003) EN ISO 15613, Specification and qualification of welding procedures for metallic materials —
Qualification based on pre-production welding test (ISO 15613:2004) EN ISO 15614-1, Specification and qualification of welding procedures for metallic materials — Welding pro-cedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1:2004) ISO 15348:2002, Pipework — Metal bellows expansion joints — General EAM-0526-18 NiMo16Cr15W (2.4819) — Nickel-Molybdenum-chromium alloy — Flat products EAM-0526-28 NiMo16Cr16Ti (2.4610) — Nickel-Chromium-Molybdenum alloy — Flat products EAM-0526-40 NiCr22Mo9Nb-gr.1 (2.4856) — Nickel-Chromium-Molybdenum alloy — Flat products SIST EN 14917:2009

Normally defined as a dimensionless alphanumeric number. 3.11 pressure thrust, Fp axial force due to the effect of pressure 3.12 neutral position bellows length in a “stress-free” state 3.13 squirm column or in-plane instability of the bellows under the effect of internal pressure 3.14 category classification of pressure equipment according to ascending level of hazard
NOTE See Annex A. 3.15 equipment manufacturer person responsible for the values of the parameters PS and TS
NOTE This may be the manufacturer or planner of the piping or the pressure vessel for which the expansion joint is designed or the expansion joint manufacturer if free to set these values. 4 Classification 4.1 Classification of expansion joints There are four types of expansion joints which are designed according to the type of movements absorbed; common examples are shown in Table 4.1: 4.1.1 Axial Absorbs mainly axial movement. When non-pressure balanced, it does not restrain pressure thrust. When pressure balanced, it restrains thrust. It can be internally or externally pressurized. 4.1.2 Angular Absorbs angular movement. When fitted with hinges, it allows movement in a single plane. When fitted with gimbal rings, it allows multi-plane movements. It restrains pressure thrust. 4.1.3 Lateral Absorbs lateral movement. An angular movement is also permissible when the expansion joint is fitted with two spherical tie bars, the movement being perpendicular to the plane containing the tie bars, or fitted with double hinges or fitted with double gimbals. It restrains pressure thrust. 4.1.4 Universal 4.1.4.1 Non-pressure balanced Absorbs several movements. It does not restrain pressure thrust. SIST EN 14917:2009

No X (X) (X) (X) (X) Non-pressure balanced externally pressurized
No X (X) (X) (X) (X) In-line pressure balanced
Yes X
Angular Hinge
Yes
X
Gimbal
Yes
X X
Yes
X
X X Two tie-bars Pinned (plane)
Yes
X
Three or more tie-bars
Yes
X X Double hinge
Yes
X
X
Double gimbal
Yes
X X X X
No X X X X X
Pressure balanced
Yes X X With two tie-bars only
X X NOTE 1 X — Applicable NOTE 2 (X) — Limited use
Key
1 Pretension or shipping bars
Figure 4.2 a — Axial non-pressure balanced internally pressurized Figure 4.2 b — Axial non-pressure balanced externally pressurized
Figure 4.2 c — Angular Figure 4.2 d — Lateral a Collars, if re-enforcing are A parts (see Table 6.2.2.4.4-1). NOTE These sketches are diagrammatic only. Figure 4.2 — Classification of the parts of expansions joint SIST EN 14917:2009

Preferable materials are given in Table 5.1. The table also gives the minimum and maximum operative tem-perature limits for the various materials. Appropriate physical properties for these materials are given in EN 10028-7, the respective European Ap-provals for Materials (EAM) or Annex B respectively. Annex J (informative) gives an extract of properties documented in the EAMs referred to in Table 5.1 and in addition gives material properties for information; e.g. creep rupture stresses and properties for very low temperatures.
Other materials not listed in Table 5.1 may be used, provided they fulfil the general requirements of 5.1 and are also suitable for the special forming and welding procedures according to 7.3 and 7.4 and provided they conform to a harmonized standard or comply with an European Approval for Material (EAM) or have a Par-ticular Material Appraisal (PMA) as defined in EN 764-4. 5.2.1.2 Corrosion The material selected for the bellows element shall have adequate resistance to all the corrosive agents likely to be encountered during the lifetime of the system. Topics of special consideration include pitting corrosion, intergranular corrosion, crevice corrosion and stress corrosion cracking. SIST EN 14917:2009

Heat treatment after forming or welding is not necessary for the stress level 0,75 and for ferritic materials belonging to group 1.1 or 1.2 according to Table J.7 and having a wall thickness not greater than 10 mm. Other materials may be used provided they fulfil the general requirements of 5.1 and conform to a harmo-nized standard or comply with a European Approval for Materials (EAM) or have a Particular Material Ap-praisal (PMA) as defined in EN 764-4. 5.2.3 Ductility All materials shall be sufficiently ductile in the delivery state. No material shall be used for main pressure-bearing parts (4.2.1) and other pressure-bearing parts (4.2.2) having an elongation after rupture A less than 14 % and a bending rupture energy less than 27 J, measured on an ISO V test-piece at a temperature not greater than 20 °C and not higher than the lowest scheduled
operating temperature.
Bellows materials after forming shall in addition conform to the requirements given in 7.4. 5.2.4 Brittle fracture Consideration shall be given to the prevention of brittle fracture, especially for expansion joints that are sub-jected to temperatures below – 10 °C: a) Bellows shall be manufactured from the allowable materials according to 5.2.1.1. If bellows are manufac-tured from materials according to Table 5.1 they shall not be used at temperatures lower than that given in the column “Minimum” in this table, except the nickel alloys 2.4816 and 2.4856.
To enable the use of these nickel alloys at lower temperatures impact energy values shall be specified and verification procedures shall be agreed to between the material manufacturer and the purchaser at the time of ordering. b) Other pressure-bearing parts shall be manufactured from the allowable materials according to 5.2.2 and shall not be used at temperatures below that given in Table 5.1 and Table 5.2, except the nickel alloys 2.4816 and 2.4856, see a). SIST EN 14917:2009

The measured impact energy shall be:  for ferritic steels (Group 1) in minimum 27 Joules;  for austenitic stainless steel (Group 8) and for nickel alloys in minimum 40 Joules or that given in the relating standard what ever is greater. 5.3 Material documentation Materials used for expansion joints shall be delivered with documentation as defined in EN 764-5. A simplified diagram of the routes for inspection, documentation and compliance with the material specifica-tion is given in Figure 5.3. Documentation according to classification 4.2 and category
Main pressure-bearing parts
(as defined in 4.2.1)
for category II, III and IV a
Main pressure- bearing parts (as defined in 4.2.1) for category I, pressure parts (as defined in 4.2.2) for category I to IV, attachments (as defined in 4.2.3) and all filler metal
Non pressure parts
(as defined in 4.2.4)
Quality system route b
Direct inspection route c
Inspection certifi-cate EN 10204
type 3.1
Inspection certifi-cate
EN 10204 type 3.2
Test report
EN 10204 type 2.2
Declaration of compli-ance with the order
EN 10204 type 2.1
a The categories are described in Annex A. b
The quality system route (production under QM system coverage according to EN 764-5 / Clause 4) shall be used
when using a listed material. c The direct inspection route (according to EN 764-5 / Clause 5) shall be used when using a material not listed.
Figure 5.3 — Required material documentation SIST EN 14917:2009

resistant austenitic steels 1.4828 X15CrNiSi20-12 –196 900 d Annex B, Position 1 1.4876 X10NiCrAlTi32-21
X10NiCrAlTi32-21 (H) – 196 600 900 d Annex B, Position 2.1Annex B, Position 2.2Nickel alloys 2.4610 NiMo16Cr16Ti – 196 400 EAM-0526-28 2.4816 NiCr15Fe – 10 450 EAM-0526-43-1, EAM-0526-43-2 (– 270) (900) d ([9], [10]) 2.4819 NiMo16Cr15W – 196 400 EAM-0526-18 2.4856 NiCr22Mo9Nb – 196 450 EAM-0526-40 (– 270) (900) d ([11], [12]) 2.4360 NiCu30Fe – 196 425 Annex B, Position 3 2.4858 NiCr21Mo – 10 540 Annex B, Position 4 a Minimum temperature according to EN 13445-2/Annex B or EN 13480-2/Annex B. b Minimum temperature according to CERN [7]. c Minimum temperature for cold-rolled strip up to 6 mm and hot-rolled sheet up to 12 mm thickness [2].
d Special care should be exercised due to the risk of embrittlement when using the materials at elevated tempera- tures above 550 °C.
– 10 – 60 b – 85 b — seamless pipes EN 10216-1 — welded pipes EN 10217-1 2 Non-alloy and alloy steels with specified properties at elevated temperatures:
– 10 – 60 – 85 — flat products EN 10028-2 c — seamless pipes EN 10216-2 — welded pipes (E-welded) EN 10217-2 — welded pipes (SA-welded) EN 10217-5 — steel forgings EN 10222-2 — b
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