BSI 16/30326248 DC:2016 Edition
$13.70
BS EN 12542. LPG equipment and accessories. Static welded steel cylindrical tanks, serially produced for the storage of Liquefied Petroleum Gas (LPG) having a volume not greater than 13 m3. Design and manufacture
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 70 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | 30326248 |
| 3 | prEN 12542 |
| 4 | Contents Page |
| 8 | European foreword |
| 9 | Introduction |
| 10 | 1 Scope 2 Normative references |
| 12 | 3 Terms and definitions |
| 14 | 4 Materials 4.1 Environmental 4.2 Shells and ends |
| 15 | Table 1 — Material grouping 4.3 Pressure parts other than shell or ends 4.4 Parts welded to the tank |
| 16 | 4.5 Welding consumables 4.6 Inspection documents for materials 4.7 Non-metallic materials (gaskets) 5 Design 5.1 General |
| 17 | 5.2 Temperature 5.3 Pressure 5.4 Vacuum conditions 5.5 Support loadings 5.6 Lifting lugs loadings |
| 18 | 6 Openings 6.1 General 6.2 Reinforcement 6.3 Position of welds and openings 7 Workmanship and manufacture 7.1 General 7.2 Environment 7.3 Control and traceability of materials |
| 19 | 7.4 Manufacturing tolerances 7.5 Acceptable weld details 7.5.1 General 7.5.2 Longitudinal welds 7.5.3 Joggle joints |
| 20 | 7.6 Formed pressure parts 7.6.1 General 7.6.2 Heat treatment after forming 7.6.2.1 Environment 7.6.2.2 Heat treatment after cold forming of flat products 7.6.2.3 Heat treatment after hot forming 7.6.3 Testing of formed parts |
| 21 | 7.6.4 Repeated tests 7.6.5 Visual examination and dimensional check 7.6.6 Marking 7.6.7 Test certificate 7.7 Welding 7.7.1 General |
| 22 | 7.7.2 Welding procedure specification (WPS) 7.7.3 Qualification of WPS 7.7.4 Qualification of welders and welding operators 7.7.5 Preparation of edges to be welded 7.7.6 Execution of welded joints |
| 23 | 7.7.7 Attachments and supports 7.7.8 Preheating 7.8 Post weld heat treatment 7.9 Repairs 7.9.1 Repairs of surface imperfections in the parent metal 7.9.2 Repair of weld imperfections |
| 24 | 8 Non-pressure attachments 8.1 Attachments 8.2 Position 8.3 Vent hole 9 Inspection and testing 9.1 Visual examination of welds 9.2 Non-destructive testing (NDT) |
| 25 | Table 2 — Extent of non-destructive testing on longitudinal welds and weld joint coefficients 9.3 Non-destructive testing techniques 9.3.1 General 9.3.2 Radiographic techniques |
| 26 | 9.3.3 Ultrasonic techniques 9.3.4 Magnetic particle techniques 9.3.5 Penetrant techniques 9.4 Marking for non-destructive testing 9.5 Qualification of personnel 9.6 Acceptance criteria |
| 27 | Table 3 — Acceptance criteria 9.7 Production test plates (coupon plates) |
| 28 | 9.8 Final assessment 9.8.1 Pressure test 9.8.2 Final examination |
| 29 | Table 4 — Number of test specimens 10 Surface treatment and finishing 10.1 Environmental considerations 10.2 Above ground tanks 10.2.1 General |
| 30 | 10.2.2 Reflectivity Table 5 — Colours and indices 10.3 Underground tanks 10.4 Finishing operations |
| 31 | 11 Marking and certification 12 Records and documentation 12.1 Records to be obtained by the manufacturer |
| 32 | 12.2 Documents to be prepared by the manufacturer |
| 33 | Annex A (informative) Design pressure and filling conditions A.1 Above ground tanks A.1.1 Design pressure (p) Table A.1 — Design pressure – Reflectivity indices 1 and 2 Table A.2 — Design pressure – Reflectivity index 3 A.1.2 Filling conditions Table A.3 — Filling reference temperatures, in degrees Celsius |
| 34 | A.1.3 Calculation of maximum fill A.2 Underground tanks — Design pressure Table A.4 — Design pressure |
| 35 | Annex B (normative) Tolerances on tanks B.1 Mean external diameter B.2 Out of roundness B.3 Deviation from the straight line B.4 Irregularities in circular profile |
| 36 | B.5 Thickness tolerance B.6 Profile Figure B.1 — Example of a dished end |
| 37 | Table B.1 — Dished end tolerances B.7 Surface alignment B.8 Attachments, nozzles and fittings |
| 38 | Annex C (normative) Hydraulic pressure test C.1 Temporary fittings C.2 Pressure gauges C.3 Pressurizing agent C.4 Avoidance of shocks C.5 Test procedure |
| 39 | Annex D (normative) Imperfections Table D.1 — Imperfection levels for visual inspection |
| 40 | Table D.2 — Imperfection levels for radiography/radioscopy |
| 41 | Annex E (normative) Design formulae for tanks E.1 Allowable stresses E.2 Design formulae E.2.1 General E.2.2 Cylindrical shell calculation E.2.3 Torispherical end calculation |
| 42 | E.2.4 Ellipsoidal end calculation |
| 43 | Figure E.1 — Parameter β for torispherical end – Design E.2.5 Hemispherical ends |
| 44 | E.2.6 Equations for calculating β E.3 Nozzle reinforcement E.3.1 General E.3.2 Size of openings |
| 45 | E.3.3 Distance between openings or branches E.3.4 Openings and branches E.3.5 Cylindrical shells and ends with openings |
| 46 | E.3.6 Shell reinforcement E.3.7 Extent of reinforcement E.3.8 Elliptical openings E.3.9 Welded branches E.3.10 Compensating plates E.3.11 Reinforcement − General |
| 47 | E.3.12 Reinforcement by pads E.3.13 Reinforcement by branches E.3.14 Branch connections normal to the tank wall |
| 48 | Figure E.2 — Maximum branch to body thickness ratio |
| 52 | Annex F (informative) Measurement of shell peaking F.1 Profile gauge F.2 Peaking survey |
| 53 | Figure F.1 — Measurement of shell peaking |
| 54 | Figure F.2 — Taper gauge |
| 55 | Annex G (informative) Examples of joints Figure G.1 — V-butt weld Figure G.2 — Joggle joint |
| 56 | Figure G.3 — Nozzle joints: set-on |
| 57 | Figure G.4 — Nozzle joints: set-in |
| 58 | Figure G.5 — Nozzle joints: integral backing |
| 59 | Annex H (informative) Method of determining reflectivity indices (above ground tanks) Table H.1 — Relationship between measured temperature and reflectivity index |
| 60 | Annex I (normative) External protection of underground tanks I.1 General I.2 Unmonitored protection systems I.3 Monitored protection systems I.3.1 Systems incorporating cathodic protection |
| 61 | I.3.2 Systems incorporating a protective envelope I.3.3 Other systems |
| 62 | Annex J (informative) Exterior corrosion protective coating with special performance against chemical and mechanical attacks J.1 General J.2 Terms and definitions J.3 Requirements J.3.1 General requirements |
| 63 | J.3.2 Requirements for the coating material J.3.3 Requirements for the coating J.3.3.1 Minimum coating thickness J.3.3.2 Absence of pores J.3.3.3 Adhesive strength J.3.3.4 Impact resistance J.3.3.5 Hardness J.3.3.6 Exposure to wet environment and temperature cycles |
| 64 | J.3.3.7 Specific electrical resistance of the coating J.3.4 Requirements for the coating process J.3.4.1 Requirements for the base metal to be coated J.3.4.2 Processing temperature in relation to the dew point J.3.4.3 Application of the coating J.3.4.4 Local repairs J.4 Testing J.4.1 Testing for the coating material J.4.1.1 Density J.4.1.2 Viscosity J.4.1.3 IR spectroscopy |
| 65 | J.4.1.4 Weight loss J.4.1.5 Mass fraction of pigments and filler material J.4.2 Testing for the coating J.4.2.1 Test sheet J.4.2.2 Thickness of coating J.4.2.3 Absence of pores J.4.2.4 Adhesive strength J.4.2.5 Impact resistance |
| 66 | J.4.2.6 Hardness J.4.2.7 Exposure to saline solution J.4.2.8 Temperature cycling J.4.2.9 Specific electrical resistance of the coating |
| 67 | J.4.3 Documentation of the coating procedure J.4.3.1 Documentation J.4.3.2 Approval of the coating procedure J.4.4 Test reports and certificates J.5 Marking J.6 Supervision during production |
| 68 | Annex ZA (informative) Relationship between this European Standard and the essential requirements of EU Directive 2014/68/EU aimed to be covered Table ZA.1 — Correspondence between this European Standard and Directive 2014/68/EU |
| 70 | Bibliography |
