Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
4.1 Shells and ends
4.2 Pressure parts other than shells and ends
4.3 Parts welded to the tank
4.4 Welding consumables
4.5 Certificates
4.6 Non metallic materials (gaskets)
5 Design
5.1 General
5.2 Temperature
5.3 Pressure
5.4 Vacuum conditions
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
7.2 Control and traceability of materials
7.3 Manufacturing tolerances
7.4 Acceptable weld details
7.5 Formed pressure parts
7.6 Welding
7.7 Post weld heat treatment
7.8 Repairs
8 Non pressure attachments
8.1 Attachment
8.2 Position
8.3 Vent hole
9 Inspection and testing
9.1 Visual examination of welds
9.2 Non-destructive testing
9.3 Non-destructive testing techniques
9.4 Marking, all non destructive testing methods
9.5 Qualification of personnel
9.6 Acceptance criteria
9.7 Production test plates (coupon plates)
9.8 Final assessment
10 Surface treatment and finishing
10.1 General
10.2 Finishing operations
11 Marking and certification
12 Records and documentation
12.1 Records to be obtained by the manufacturer
12.2 Documents to be prepared by the manufacturer
Annex A (normative) - 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 Dished end tolerance
B.6 Profile
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 Pressurising agent
C.4 Avoidance of shocks
C.5 Test pressure
Annex D (normative) - Imperfections
Annex E (normative) - Design formulae for tanks
E.1 Allowable stresses
E.2 Design formulae
E.3 Nozzle re-enforcement
Annex F (informative) - Measurement of shell peaking
F.1 Profile gauge
F.2 Peaking survey
Annex G (informative) - Examples of joints
Annex H (normative) - External protection of underground
tanks
H.1 General
H.2 Unmonitored protection systems
H.3 Monitored protection systems
Annex ZA (informative) - Clauses of this European Standard
addressing essential requirements
or other provisions of EU Directives
Bibliography