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eLibrary > 16/30326248 DC 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 >

16/30326248 DC 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, 2016

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16/30326248 DC 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, 2016

30326248
prEN 12542 [Go to Page]
Contents Page
European foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Materials [Go to Page]
4.1 Environmental
4.2 Shells and ends
Table 1 — Material grouping [Go to Page]
4.3 Pressure parts other than shell or ends
4.4 Parts welded to the tank
4.5 Welding consumables
4.6 Inspection documents for materials
4.7 Non-metallic materials (gaskets)
5 Design [Go to Page]
5.1 General
5.2 Temperature
5.3 Pressure
5.4 Vacuum conditions
5.5 Support loadings
5.6 Lifting lugs loadings
6 Openings [Go to Page]
6.1 General
6.2 Reinforcement
6.3 Position of welds and openings
7 Workmanship and manufacture [Go to Page]
7.1 General
7.2 Environment
7.3 Control and traceability of materials
7.4 Manufacturing tolerances
7.5 Acceptable weld details [Go to Page]
7.5.1 General
7.5.2 Longitudinal welds
7.5.3 Joggle joints
7.6 Formed pressure parts [Go to Page]
7.6.1 General
7.6.2 Heat treatment after forming [Go to Page]
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
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 [Go to Page]
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
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
7.9 Repairs [Go to Page]
7.9.1 Repairs of surface imperfections in the parent metal
7.9.2 Repair of weld imperfections
8 Non-pressure attachments [Go to Page]
8.1 Attachments
8.2 Position
8.3 Vent hole
9 Inspection and testing [Go to Page]
9.1 Visual examination of welds
9.2 Non-destructive testing (NDT)
Table 2 — Extent of non-destructive testing on longitudinal welds and weld joint coefficients [Go to Page]
9.3 Non-destructive testing techniques [Go to Page]
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
9.4 Marking for non-destructive testing
9.5 Qualification of personnel
9.6 Acceptance criteria
Table 3 — Acceptance criteria [Go to Page]
9.7 Production test plates (coupon plates)
9.8 Final assessment [Go to Page]
9.8.1 Pressure test
9.8.2 Final examination
Table 4 — Number of test specimens
10 Surface treatment and finishing [Go to Page]
10.1 Environmental considerations
10.2 Above ground tanks [Go to Page]
10.2.1 General
10.2.2 Reflectivity
Table 5 — Colours and indices [Go to Page]
10.3 Underground tanks
10.4 Finishing operations
11 Marking and certification
12 Records and documentation [Go to Page]
12.1 Records to be obtained by the manufacturer
12.2 Documents to be prepared by the manufacturer
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
A.1.3 Calculation of maximum fill
A.2 Underground tanks — Design pressure
Table A.4 — Design pressure
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
B.5 Thickness tolerance
B.6 Profile
Figure B.1 — Example of a dished end
Table B.1 — Dished end tolerances
B.7 Surface alignment
B.8 Attachments, nozzles and fittings
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
Annex D (normative) Imperfections
Table D.1 — Imperfection levels for visual inspection
Table D.2 — Imperfection levels for radiography/radioscopy
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
E.2.4 Ellipsoidal end calculation
Figure E.1 — Parameter β for torispherical end – Design
E.2.5 Hemispherical ends
E.2.6 Equations for calculating β
E.3 Nozzle reinforcement
E.3.1 General
E.3.2 Size of openings
E.3.3 Distance between openings or branches
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
E.3.9 Welded branches
E.3.10 Compensating plates
E.3.11 Reinforcement − General
E.3.12 Reinforcement by pads
E.3.13 Reinforcement by branches
E.3.14 Branch connections normal to the tank wall
Figure E.2 — Maximum branch to body thickness ratio
Annex F (informative) Measurement of shell peaking
F.1 Profile gauge
F.2 Peaking survey
Figure F.1 — Measurement of shell peaking
Figure F.2 — Taper gauge
Annex G (informative) Examples of joints
Figure G.1 — V-butt weld
Figure G.2 — Joggle joint
Figure G.3 — Nozzle joints: set-on
Figure G.4 — Nozzle joints: set-in
Figure G.5 — Nozzle joints: integral backing
Annex H (informative) Method of determining reflectivity indices (above ground tanks)
Table H.1 — Relationship between measured temperature and reflectivity index
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
I.3.2 Systems incorporating a protective envelope
I.3.3 Other systems
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
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
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
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
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
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
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
Bibliography [Go to Page]

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16/30326248 DC 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, 2016

To continue with accurate pricing,
please select your company type below:

16/30326248 DC 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, 2016