ISO 11513:2019
Gas cylinders — Refillable welded steel cylinders containing materials for sub-atmospheric gas packaging (excluding acetylene) — Design, construction, testing, use and periodic inspection
This document specifies minimum requirements for the material, design, construction, workmanship, examination and testing at manufacture of refillable welded steel cylinders for the sub-atmospheric pressure storage of liquefied and compressed gases. It only applies to the cylinders themselves, irrespective of the materials contained therein (e.g. adsorbents, media, materials and/or gases) and other related applications. The cylinders have a test pressure not greater than 42 bar and a water capacity from 0,5 l up to and including 12 l exposed to ambient temperatures for the purpose of facilitating the sub‑atmospheric pressure storage of liquefied and compressed gases as adsorbed gases.
Minimum requirements for inspection at the time of fill and periodic inspection and testing are also specified.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Inspection and testing
5 Materials and stress relieving
6 Design
6.1 General
6.2 Calculation of cylindrical wall thickness
6.3 Design of cylinder ends
6.3.1 General
6.3.2 Design of base concave to pressure
6.4 Minimum wall thickness
6.5 Pressure relief device
7 Construction and workmanship
7.1 General
7.2 Welding qualification
7.3 Welding seams of pressure containing parts
7.4 Valve protection
7.5 Boss threads
7.6 Visual examination
7.6.1 Imperfections
7.6.2 Welds
7.6.3 Out-of-roundness
7.6.4 Straightness
7.6.5 Verticality
8 Technical requirements for type approval testing (new design tests)
8.1 General
8.2 Verifications and tests
8.3 Description of verification tests
8.3.1 Hydraulic burst test
8.3.2 Pressure cycling test
9 Batch tests
9.1 General
9.2 Information
9.3 Checks and verifications
9.4 Tensile test
9.4.1 General
9.4.2 Tensile test samples required from parent material
9.4.3 Tensile test samples required from welds
9.5 Bend test
9.6 Macroscopic examination of weld cross-sections
9.7 Radiographic examination of welds
10 Tests on every cylinder
11 Failure to meet verification and test requirements
12 Marking
13 Certification
Annex A (normative) Inspection at time of fill
Annex B (normative) Periodic inspection and test
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Inspection and testing
5 Materials and stress relieving
6 Design
6.1 General
6.2 Calculation of cylindrical wall thickness
6.3 Design of cylinder ends
6.3.1 General
6.3.2 Design of base concave to pressure
6.4 Minimum wall thickness
6.5 Pressure relief device
7 Construction and workmanship
7.1 General
7.2 Welding qualification
7.3 Welding seams of pressure containing parts
7.4 Valve protection
7.5 Boss threads
7.6 Visual examination
7.6.1 Imperfections
7.6.2 Welds
7.6.3 Out-of-roundness
7.6.4 Straightness
7.6.5 Verticality
8 Technical requirements for type approval testing (new design tests)
8.1 General
8.2 Verifications and tests
8.3 Description of verification tests
8.3.1 Hydraulic burst test
8.3.2 Pressure cycling test
9 Batch tests
9.1 General
9.2 Information
9.3 Checks and verifications
9.4 Tensile test
9.4.1 General
9.4.2 Tensile test samples required from parent material
9.4.3 Tensile test samples required from welds
9.5 Bend test
9.6 Macroscopic examination of weld cross-sections
9.7 Radiographic examination of welds
10 Tests on every cylinder
11 Failure to meet verification and test requirements
12 Marking
13 Certification
Annex A (normative) Inspection at time of fill
Annex B (normative) Periodic inspection and test
Bibliography