ISO 23088:2020
Gas cylinders — Periodic inspection and testing of welded steel pressure drums — Capacities up to 1 000 l
This document specifies the requirements for periodic inspection and testing of welded steel transportable pressure drums of water capacity from 150 l up to 1 000 l and up to 300 bar test pressure intended for compressed and liquefied gases.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Intervals between periodic inspections and tests
5 List of procedures for periodic inspection and test
6 Identification of pressure drum
7 Preparation for inspection and testing
7.1 General
7.2 Depressurization
7.3 Devalving and flange removal
8 External visual inspection
8.1 Preparation
8.2 Procedure
9 Internal visual inspection
10 Supplementary tests
11 Inspection of openings and fittings
11.1 Internal threads
11.2 Damaged internal threads
11.3 Flanged openings and retaining assemblies
11.4 Damaged flanged openings and/or retaining assemblies
12 Pressure test
12.1 General
12.2 Proof pressure test
12.3 Test procedures
12.3.1 Hydraulic test
12.3.2 Pneumatic test
12.4 Acceptance criteria
13 Repair of pressure drums
13.1 Welds
13.2 Other repairs
13.3 Requirements for repair
14 Inspection of valves
15 Final operations
15.1 Drying and cleaning
15.2 Painting
15.3 Fitting valves
15.4 Fitting of flanges
15.5 Verification of tare
15.6 Retest marking
15.7 Reference to the next test date
15.8 Records
16 Rejection and rendering unserviceable
Annex A (informative) Periodic inspection and test periods
Annex B (normative) Description, evaluation of defects and conditions for rejection of pressure drums at the time of visual inspection
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Intervals between periodic inspections and tests
5 List of procedures for periodic inspection and test
6 Identification of pressure drum
7 Preparation for inspection and testing
7.1 General
7.2 Depressurization
7.3 Devalving and flange removal
8 External visual inspection
8.1 Preparation
8.2 Procedure
9 Internal visual inspection
10 Supplementary tests
11 Inspection of openings and fittings
11.1 Internal threads
11.2 Damaged internal threads
11.3 Flanged openings and retaining assemblies
11.4 Damaged flanged openings and/or retaining assemblies
12 Pressure test
12.1 General
12.2 Proof pressure test
12.3 Test procedures
12.3.1 Hydraulic test
12.3.2 Pneumatic test
12.4 Acceptance criteria
13 Repair of pressure drums
13.1 Welds
13.2 Other repairs
13.3 Requirements for repair
14 Inspection of valves
15 Final operations
15.1 Drying and cleaning
15.2 Painting
15.3 Fitting valves
15.4 Fitting of flanges
15.5 Verification of tare
15.6 Retest marking
15.7 Reference to the next test date
15.8 Records
16 Rejection and rendering unserviceable
Annex A (informative) Periodic inspection and test periods
Annex B (normative) Description, evaluation of defects and conditions for rejection of pressure drums at the time of visual inspection
Bibliography