This European Standard specifies minimum requirements for materials, design, construction and workmanship procedures, and tests for welded LPG road tanker pressure vessels and their welded attachments manufactured from carbon, carbon\/manganese and micro alloy steels. There is no upper size limit as this is determined by the gross vehicle weight limitation. This European Standard does not cover pressure vessels for pressure vessel containers. NOTE 1 In the context of this standard the term “road tanker” is understood to mean fixed tanks and demountable tanks as defined in ADR. NOTE 2 The equipment for the pressure vessels and the inspection and testing after assembly is covered by EN 12252 and EN 14334, respectively. NOTE 3 The design type of the road tanker is subject to approval by the competent authority, as required by ADR. NOTE 4 This standard is intended for LPG only; however for other liquefied gases see EN 14025.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4 Materials 4.1 Environmental 4.2 Suitability <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.3 Pressure retaining parts 4.4 Non-pressure retaining parts 4.5 Welding consumables 4.6 Non-metallic materials (gaskets) 4.7 Inspection documents for materials 5 Pressure vessel design 5.1 Design conditions <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.2 Minimum thickness 5.3 Surge plates 5.4 Doubler plates <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 5.5 Stresses due to motion 5.6 Self-supporting pressure vessels 5.7 Vacuum conditions 5.8 Pressure vessel mountings <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.9 Internal pipework 6 Openings 6.1 General 6.2 Reinforcement of openings 6.3 Threaded connections 6.4 Manhole <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 7 Non-pressure retaining parts 7.1 Attachment welds 7.2 Position of attachment welds 8 Workmanship and construction 8.1 General 8.2 Environment 8.3 Control of materials <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 8.4 Acceptable weld details 8.5 Heat treatment and forming 8.5.1 Cold forming <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 8.5.2 Hot forming 8.5.3 Testing of formed parts <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 8.5.4 Visual examination and control of dimensions 8.5.5 Marking 8.6 Welding 8.6.1 General 8.6.2 Longitudinal welds 8.6.3 Welding procedure specification (WPS) 8.6.4 Qualification of WPS 8.6.5 Qualification of welders and welding operators <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 8.6.6 Preparation of edges 8.6.7 Attachments and fastenings 8.6.8 Preheat 8.7 Post-weld heat treatment <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 8.8 Manufacturing tolerances 8.9 Repairs to pressure envelope and direct attachment welds 8.9.1 General requirements 8.9.2 Repair of surface imperfections in the parent metal 8.9.3 Repair of weld imperfections 9 Construction and workmanship of internal pipework 10 Manufacturing tests and examinations 10.1 General <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 10.2 Mechanical testing 10.2.1 Production test plates 10.2.2 Longitudinal welds 10.2.3 Circumferential welds 10.2.4 Mechanical tests 10.2.5 Test requirements 10.2.5.1 Bend test 10.2.5.2 Tensile test 10.2.5.3 Macroscopic examination 10.2.5.4 Impact tests <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 10.2.5.5 Re-tests 10.3 Non-destructive testing 10.3.1 General 10.3.2 Internal imperfections 10.3.3 Surface imperfections <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 10.4 Non-destructive testing for welds 10.4.1 Radiographic testing 10.4.2 Marking and identification of radiographs 10.4.3 Ultrasonic testing 10.4.4 Magnetic particle testing 10.4.5 Penetrant testing 10.5 Qualification of non-destructive testing personnel <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 10.6 Visual examination of welds 10.7 Acceptance criteria 10.8 \ufeff#Safety precautions at the hydraulic test$ 11 External corrosion protection and finishing 11.1 External protection 11.2 Finishing operations 12 Marking 13 Records and documentation 13.1 Documentation obtained by the manufacturer <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 13.2 Records prepared by the manufacturer 13.3 Retention and supply of documents <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Annex A (normative)Guidance on selection of material grades <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Annex B (normative)Reference temperatures for design B.1 Introduction B.2 General B.3 Developed pressure B.4 Filling <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Annex C (informative)Alternative reference temperatures for design C.1 Introduction C.2 General C.3 Developed pressure C.4 Filling <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Annex D (normative)Design D.1 Design stresses D.2 Design pressure D.3 Design formulae D.3.1 Cylindrical shell calculation <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | D.3.2 Dished ends D.3.2.1 Minimum thickness D.3.2.2 Torispherical end calculation <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | D.3.2.3 Ellipsoidal end calculation D.3.2.4 Hemispherical ends <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | D.3.2.5 Formulae for calculating \u03b2 <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | D.3.3 Conical shell calculations D.3.3.1 General requirements D.3.3.2 Thickness of conical shell <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | D.3.3.3 Junction between large end of a cone and a cylinder without a knuckle <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | D.3.3.4 Junction between the small end of a cone and a cylinder <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | D.4 Nozzle reinforcement <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | D.5 Nozzle reinforcement by pads or flanges D.6 Nozzle reinforcement by branches <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Annex E (informative)Example of joints <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | Annex F (normative)Allowable tolerances F.1 Pressure vessels F.1.1 External diameter F.1.2 Out of roundness F.1.3 Deviation of straightness F.1.4 Irregularities in profile <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | F.2 Dished end tolerance F.2.1 Thickness of material F.2.2 Profile <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | F.3 Assembly tolerances F.3.1 Middle line alignment F.3.2 Surface alignment F.4 Attachments, nozzles and fittings <\/td>\n<\/tr>\n | ||||||
| 55<\/td>\n | F.5 Overall length <\/td>\n<\/tr>\n | ||||||
| 56<\/td>\n | Annex G (normative)Heat treatment G.1 Method of post-weld heat treatment G.2 Temperature control G.3 Temperature limit G.4 Temperature measurement <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | Annex H (informative)Typical method for measurement of shell peaking H.1 Profile gauge H.2 Peaking survey <\/td>\n<\/tr>\n | ||||||
| 60<\/td>\n | Annex I (normative)Welding imperfections and test specimens I.1 Imperfections <\/td>\n<\/tr>\n | ||||||
| 63<\/td>\n | I.2 Test specimens <\/td>\n<\/tr>\n | ||||||
| 65<\/td>\n | Annex J (informative)Choice of non-destructive test methods for welds J.1 Internal imperfections J.2 Surface imperfections <\/td>\n<\/tr>\n | ||||||
| 66<\/td>\n | Annex K (normative)Hydraulic pressure test K.1 Temporary fittings K.2 Pressure gauges K.3 Pressurizing agent K.4 Avoidance of shock K.5 Applied pressure <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" LPG equipment and accessories. Welded steel pressure vessels for LPG road tankers. Design and manufacture<\/b><\/p>\n |