{"id":379786,"date":"2024-10-20T03:04:00","date_gmt":"2024-10-20T03:04:00","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-149172021\/"},"modified":"2024-10-26T05:31:31","modified_gmt":"2024-10-26T05:31:31","slug":"bs-en-149172021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-149172021\/","title":{"rendered":"BS EN 14917:2021"},"content":{"rendered":"

This document specifies the requirements for design, manufacture and installation of metal bellows expansion joints with circular cross section for pressure applications with maximum allowable pressure greater than 0,5 bar.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
13<\/td>\nIntroduction <\/td>\n<\/tr>\n
14<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
18<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
21<\/td>\n4 Classification <\/td>\n<\/tr>\n
26<\/td>\n5 Materials <\/td>\n<\/tr>\n
32<\/td>\n6 Design <\/td>\n<\/tr>\n
122<\/td>\n7 Manufacturing <\/td>\n<\/tr>\n
128<\/td>\n8 Testing, inspection and documentation <\/td>\n<\/tr>\n
145<\/td>\n9 Marking and labelling
10 Handling and installation <\/td>\n<\/tr>\n
147<\/td>\nAnnex A (informative)Categories of expansion joints
A.1 General
A.2 Determination of expansion joints categories
A.3 Fluid groups
A.3.1 General
A.3.2 Group 1 <\/td>\n<\/tr>\n
148<\/td>\nA.3.3 Group 2
A.4 Technical requirements
A.4.1 Expansion joints for vessels
A.4.2 Expansion joints for piping <\/td>\n<\/tr>\n
149<\/td>\nA.4.3 Sound engineering practice (SEP)
A.5 Expansion joint category <\/td>\n<\/tr>\n
151<\/td>\nAnnex B (informative)Specification for materials 1.4828, 1.4876, 2.4360 and 2.4858 <\/td>\n<\/tr>\n
158<\/td>\nAnnex C (informative)Incorporation of expansion joints into piping or pressure vessels
C.1 General <\/td>\n<\/tr>\n
159<\/td>\nC.2 Specific symbols and definitions <\/td>\n<\/tr>\n
160<\/td>\nC.3 Application criteria for expansion joints in piping
C.3.1 General
C.3.2 Use of axial expansion joints
C.3.2.1 General <\/td>\n<\/tr>\n
161<\/td>\nC.3.2.2 Axial expansion joints, non-pressure balanced <\/td>\n<\/tr>\n
165<\/td>\nC.3.2.3 Axial expansion, pressure balanced <\/td>\n<\/tr>\n
166<\/td>\nC.3.3 Use of restraint expansion joints
C.3.3.1 General <\/td>\n<\/tr>\n
167<\/td>\nC.3.3.2 Angular expansion joints <\/td>\n<\/tr>\n
170<\/td>\nC.3.3.3 Lateral expansion joints <\/td>\n<\/tr>\n
172<\/td>\nC.3.4 Use of universal expansion joints
C.3.4.1 General
C.3.4.2 Unrestrained universal expansion joint <\/td>\n<\/tr>\n
173<\/td>\nC.3.4.3 Restrained universal expansion joints, pressure balanced <\/td>\n<\/tr>\n
174<\/td>\nC.3.5 Indeterminate configurations of expansion joints
C.3.5.1 General
C.3.5.2 Strait piping section with axial expansion joints <\/td>\n<\/tr>\n
175<\/td>\nC.3.5.3 Plane U-bend system with angular expansion joints
C.3.5.4 Three dimensional systems with three gimbal angular expansion points <\/td>\n<\/tr>\n
176<\/td>\nC.3.5.5 Three-dimensional system with lateral expansion joints <\/td>\n<\/tr>\n
177<\/td>\nC.4 Application criteria for expansion joints in pressure vessels
C.4.1 General
C.4.2 Axial expansion joint installed in the shell <\/td>\n<\/tr>\n
178<\/td>\nC.4.3 Axial expansion joint installed at the floating head <\/td>\n<\/tr>\n
179<\/td>\nAnnex D (informative)Calculation methods for systems of pipes containing expansion joints
D.1 General
D.1.1 Preliminary remarks
D.1.2 Determining movement values
D.1.3 Thermal expansion <\/td>\n<\/tr>\n
181<\/td>\nD.2 Approximate calculation of bellows movement
D.2.1 General <\/td>\n<\/tr>\n
182<\/td>\nD.2.2 Hinged systems
D.2.3 Definitions
D.2.3.1 Distances
D.2.3.2 Hinges
D.2.3.3 Movements in pipe runs <\/td>\n<\/tr>\n
186<\/td>\nD.3 Exact calculation of bellows movement
D.3.1 Two hinges in a plane system (Z-system) <\/td>\n<\/tr>\n
187<\/td>\nD.3.2 Two gimbals in a three-dimensional system (Z-system) <\/td>\n<\/tr>\n
188<\/td>\nD.3.3 Three hinges in a plane system (U-system) <\/td>\n<\/tr>\n
189<\/td>\nD.3.4 Three hinges in a plane system (L-system)
D.3.4.1 General <\/td>\n<\/tr>\n
190<\/td>\nD.3.4.2 Calculation of auxiliary parameters and angular rotations <\/td>\n<\/tr>\n
191<\/td>\nD.3.4.3 Limitation of movement
D.3.5 Three hinges in a three-dimensional system (Z-system)
D.3.5.1 General <\/td>\n<\/tr>\n
192<\/td>\nD.3.5.2 Calculation of auxiliary parameters induced by the additional movement \u03941 <\/td>\n<\/tr>\n
193<\/td>\nD.3.5.3 Calculation of auxiliary parameters and angular rotations in a plane system with the theoretical hinge distance A*:
D.3.5.4 Angular rotations <\/td>\n<\/tr>\n
194<\/td>\nD.4 Calculation of forces and moments <\/td>\n<\/tr>\n
195<\/td>\nAnnex E (informative)Explanatory notes on the design of expansion bellows
E.1 General
E.2 Calculation design <\/td>\n<\/tr>\n
196<\/td>\nE.3 Types of bellows
E.3.1 Corrugation shape
E.3.2 Number of plies
E.4 Fatigue life expectancy <\/td>\n<\/tr>\n
197<\/td>\nE.5 Instability
E.5.1 General
E.5.2 Column instability
E.5.3 In-plane instability
E.5.4 Buckling <\/td>\n<\/tr>\n
198<\/td>\nE.6 Bellows spring rate <\/td>\n<\/tr>\n
200<\/td>\nAnnex F (informative)Procedure for setting-up a design fatigue curve
F.1 General
F.2 Procedure for setting up a design fatigue curve for expansion bellows
F.2.1 General
F.2.2 Number of tests
F.2.3 Extrapolation range
F.2.4 Manufacturing methods <\/td>\n<\/tr>\n
201<\/td>\nF.2.5 Bellows material
F.3 Tests
F.3.1 Movement
F.3.2 Test pressure
F.3.2.1 Constant internal pressure
F.3.3 Other test conditions <\/td>\n<\/tr>\n
202<\/td>\nF.3.4 Fatigue test equipment <\/td>\n<\/tr>\n
203<\/td>\nF.4 Evaluation of the test results <\/td>\n<\/tr>\n
208<\/td>\nF.5 Linear regression <\/td>\n<\/tr>\n
209<\/td>\nAnnex G (informative)Polynomial approximations for coefficients Cp, Cf, Cd
G.1 Coefficient Cp <\/td>\n<\/tr>\n
210<\/td>\nG.2 Coefficient Cf <\/td>\n<\/tr>\n
211<\/td>\nG.3 Coefficient Cd <\/td>\n<\/tr>\n
212<\/td>\nG.4 Linear interpolation <\/td>\n<\/tr>\n
214<\/td>\nAnnex H (informative)Required design data and information
H.1 Required design conditions
H.2 Additional information <\/td>\n<\/tr>\n
215<\/td>\nAnnex I (informative)Expansion joints risk analyses <\/td>\n<\/tr>\n
216<\/td>\nAnnex J (informative)Additional material properties <\/td>\n<\/tr>\n
221<\/td>\nAnnex K (normative)Hardware calculation
K.1 General
K.2 Additional symbols <\/td>\n<\/tr>\n
224<\/td>\nK.3 Force due to pressure <\/td>\n<\/tr>\n
225<\/td>\nK.4 Tie bar
K.4.1 General
K.4.2 Tie bar in tension <\/td>\n<\/tr>\n
226<\/td>\nK.4.3 Tie bar in compression
K.5 Pin <\/td>\n<\/tr>\n
229<\/td>\nK.6 Lug with bore
K.6.1 General
K.6.2 Forces due to pressure <\/td>\n<\/tr>\n
230<\/td>\nK.6.3 Stresses due to reaction force <\/td>\n<\/tr>\n
231<\/td>\nK.7 Gimbal, square and round
K.7.1 General
K.7.2 Stresses in bored section <\/td>\n<\/tr>\n
232<\/td>\nK.7.3 Square type gimbal
K.7.3.1 General <\/td>\n<\/tr>\n
233<\/td>\nK.7.3.2 Instability <\/td>\n<\/tr>\n
234<\/td>\nK.7.3.3 Stresses in the corner connection <\/td>\n<\/tr>\n
235<\/td>\nK.7.4 Round type gimbal <\/td>\n<\/tr>\n
237<\/td>\nK.8 Attachment plate
K.8.1 Attachment plate (closed\/open) with 2 restraining parts
K.8.1.1 General <\/td>\n<\/tr>\n
238<\/td>\nK.8.1.2 Stress in plate for section 3 <\/td>\n<\/tr>\n
239<\/td>\nK.8.1.3 Stress in sections for form-lock connection (lugs for hinge\/gimbal) <\/td>\n<\/tr>\n
242<\/td>\nK.8.1.4 Stress in sections for welded buttonhole connection (lugs for hinge\/gimbal) <\/td>\n<\/tr>\n
245<\/td>\nK.8.1.5 Stress in the pipe
K.8.1.6 Stress in the weld plate\/pipe
K.8.2 Circular attachment plate with 3 or more tie bars valid up to DN 800
K.8.2.1 General <\/td>\n<\/tr>\n
246<\/td>\nK.8.2.2 Stress in the plate <\/td>\n<\/tr>\n
247<\/td>\nK.8.2.3 Stress in the pipe <\/td>\n<\/tr>\n
248<\/td>\nK.8.2.4 Stress in the weld plate\/pipe
K.9 Lug-plate connection (hinge\/gimbal)
K.9.1 General <\/td>\n<\/tr>\n
249<\/td>\nK.9.2 Lug-plate for form-lock connection
K.9.2.1 General
K.9.2.2 Stresses in Section 1 <\/td>\n<\/tr>\n
250<\/td>\nK.9.2.3 Stresses in Section 2 <\/td>\n<\/tr>\n
252<\/td>\nK.9.3 Lug-plate for welded buttonhole connection
K.9.3.1 General <\/td>\n<\/tr>\n
253<\/td>\nK.9.3.2 Weld between lug plate and attachment plate
K.10 Tie bar and lug attachment on flanges
K.10.1 Integral flange
K.10.1.1 Stress in flange with 2 tie bars or lugs <\/td>\n<\/tr>\n
255<\/td>\nK.10.1.2 Stress in flange with more than 2 tie bars <\/td>\n<\/tr>\n
257<\/td>\nK.10.2 Plate welded on flange
K.10.2.1 Stress in plate welded on flange with 2 tie bars <\/td>\n<\/tr>\n
260<\/td>\nK.11 Gusset
K.12 Gusset with reinforcing rings
K.12.1 General <\/td>\n<\/tr>\n
262<\/td>\nK.12.2 Basic definitions <\/td>\n<\/tr>\n
263<\/td>\nK.12.3 Stresses in the gussets
K.12.4 Stresses in the ring and pipe <\/td>\n<\/tr>\n
264<\/td>\nK.12.5 Stresses in welds a7, a8 and a9 <\/td>\n<\/tr>\n
266<\/td>\nAnnex ZA (informative)Relationship between this European Standard and the EssentialRequirements of EU Directive 2014\/68\/EU <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Metal bellows expansion joints for pressure applications<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n270<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":379793,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[356,2641],"product_tag":[],"class_list":{"0":"post-379786","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-23-040-99","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/379786","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/379793"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=379786"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=379786"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=379786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}