BS ISO 18172-2:2007
Current
The latest, up-to-date edition.
Gas cylinders. Refillable welded stainless steel cylinders Test pressure greater than 6 MPa
Hardcopy , PDF
English
31-05-2007
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Materials and heat treatment
4.1 General
4.2 Categories
4.3 Heat treatment
4.4 Test requirements
5 Design
5.1 General requirements
5.2 Calculation of cylindrical shell wall thickness
5.3 Design of convex ends
5.4 Minimum wall thickness
5.5 Ends of other shapes
5.6 Design of openings
5.7 Bungs
6 Construction and workmanship
6.1 General
6.2 Welding
6.3 Cryoforming procedure
6.4 Welded joints of pressure-containing parts
6.5 Non-pressure-containing attachments
6.6 Valve protection
6.7 Neck threads
6.8 Visual examination
7 New design tests
7.1 General requirements
7.2 Verifications and tests
7.3 Descriptions of tests
7.4 Design testing certificate
8 Batch tests
8.1 General
8.2 Information
8.3 Tensile test
8.4 Bend test
8.5 Impact test
8.6 Macroscopic examination of weld cross-sections
8.7 Checks and verifications
9 Tests on every cylinder
9.1 Pressure test
9.2 Hardness test
9.3 Leakage test
10 Failure to meet test requirements
11 Markings
12 Certificate
Annex A (normative) Radiographic examination of welds
Annex B (normative) Description and evaluation of
manufacturing defects and conditions for rejection
of welded stainless steel gas cylinders at time of
visual inspection
Annex C (informative) Examples of design and batch testing
certificates
Bibliography
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