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BS EN 12542:2020

BS EN 12542:2020

$215.11

LPG equipment and accessories. Static welded steel cylindrical pressure vessels, 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 2020 72
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This document specifies requirements for the design and manufacture of static welded steel cylindrical pressure vessels, serially produced for the storage of liquefied petroleum gas (LPG) with a volume not greater than 13 m3 and for installation above or below ground.

PDF Catalog

PDF Pages PDF Title
2 undefined
10 1 Scope
2 Normative references
12 3 Terms and definitions
3.1 General terms
14 3.2 Terms for coatings
4 Materials
4.1 Environmental
4.2 Shells and ends
16 4.3 Pressure parts other than shell or ends
4.4 Parts welded to the pressure vessel
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
18 5.5 Support loadings
5.6 Lifting lugs loadings
6 Openings
6.1 General
6.2 Reinforcement
6.3 Position of welds and openings
7 Workmanship and manufacture
7.1 General
19 7.2 Environment
7.3 Control and traceability of materials
7.4 Manufacturing tolerances
7.5 Acceptable weld details
7.5.1 General
7.5.2 Longitudinal welds
20 7.5.3 Joggle joints
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
21 7.6.2.3 Heat treatment after hot forming
7.6.3 Testing of formed parts
7.6.4 Repeated tests
22 7.6.5 Visual examination and dimensional check
7.6.6 Marking
7.6.7 Test certificate
7.7 Welding
7.7.1 General
7.7.2 Welding procedure specification (WPS)
7.7.3 Qualification of WPS
7.7.4 Qualification of welders and welding operators
23 7.7.5 Preparation of edges to be welded
7.7.6 Execution of welded joints
7.7.7 Attachments and supports
7.7.8 Preheating
7.8 Post weld heat treatment
24 7.9 Repairs
7.9.1 Repairs of surface imperfections in the parent metal
7.9.2 Repair of weld imperfections
8 Non-pressure attachments
8.1 Attachments
8.2 Position
8.3 Vent hole
25 9 Inspection and testing
9.1 Visual examination of welds
9.2 Non-destructive testing (NDT)
26 9.3 Non-destructive testing techniques
9.3.1 General
9.3.2 Radiographic techniques
9.3.3 Ultrasonic techniques
9.3.4 Magnetic particle techniques
9.3.5 Penetrant techniques
27 9.4 Marking for non-destructive testing
9.5 Qualification of personnel
9.6 Acceptance criteria
28 9.7 Production test plates (coupon plates)
29 9.8 Final assessment
9.8.1 Pressure test
30 9.8.2 Final examination
10 Surface treatment and finishing
10.1 Environmental considerations
10.2 Above ground pressure vessels
10.2.1 General
10.2.2 Reflectivity
31 10.3 Underground pressure vessels
10.4 Finishing operations
11 Marking and certification
32 12 Records and documentation
12.1 Records to be obtained by the manufacturer
12.2 Documents to be prepared by the manufacturer
33 Annex A (informative)Design pressure and filling conditions
A.1 Above ground pressure vessels
A.1.1 Design pressure (p)
A.1.2 Filling conditions
34 A.1.3 Calculation of maximum fill
A.2 Underground pressure vessels — Design pressure
35 Annex B (normative)Tolerances on pressure vessels
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
37 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
41 Annex E (normative)Design formulae for pressure vessels
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
44 E.2.5 Hemispherical ends
E.2.6 Equations for calculating β
45 E.3 Nozzle reinforcement
E.3.1 General
E.3.2 Size of openings
E.3.3 Distance between openings or branches
46 E.3.4 Openings and branches
E.3.5 Cylindrical shells and ends with openings
E.3.6 Shell reinforcement
E.3.7 Extent of reinforcement
E.3.8 Elliptical openings
47 E.3.9 Welded branches
E.3.10 Compensating plates
E.3.11 Reinforcement − General
E.3.12 Reinforcement by pads
48 E.3.13 Reinforcement by branches
E.3.14 Branch connections normal to the pressure vessel wall
52 Annex F (informative)Measurement of shell peaking
F.1 Profile gauge
F.2 Peaking survey
55 Annex G (informative)Examples of joints
59 Annex H (informative)Method of determining reflectivity indices (above ground pressure vessels)
60 Annex I (normative)External protection of underground pressure vessels
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 Requirements
J.2.1 General requirements
J.2.2 Requirements for the coating material
63 J.2.3 Requirements for the coating
J.2.3.1 Minimum coating thickness
J.2.3.2 Absence of pores
J.2.3.3 Adhesive strength
J.2.3.4 Impact resistance
J.2.3.5 Hardness
J.2.3.6 Exposure to wet environment and temperature cycles
J.2.3.7 Specific electrical resistance of the coating
J.2.3.8 U.V Protection
64 J.2.4 Requirements for the coating process
J.2.4.1 Requirements for the base metal to be coated
J.2.4.2 Processing temperature in relation to the dew point
J.2.4.3 Application of the coating
J.2.4.4 Local repairs
J.3 Testing
J.3.1 Testing for the coating material
J.3.1.1 Density
J.3.1.2 Viscosity
J.3.1.3 IR spectroscopy
J.3.1.4 Weight loss
J.3.1.5 Mass fraction of pigments and filler material
65 J.3.2 Testing for the coating
J.3.2.1 Test sheet
J.3.2.2 Thickness of coating
J.3.2.3 Absence of pores
J.3.2.4 Adhesive strength
J.3.2.5 Impact resistance
J.3.2.6 Hardness
66 J.3.2.7 Exposure to saline solution
J.3.2.8 Temperature cycling
J.3.2.9 Specific electrical resistance of the coating
J.3.3 Documentation of the coating procedure
J.3.3.1 Documentation
J.3.3.2 Approval of the coating procedure
67 J.3.4 Test reports and certificates
J.4 Supervision during production
68 Annex ZA (informative)Relationship between this European Standard and the essential requirements of EU Directive 2014/68/EU

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BS EN 12542:2020
$215.11