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BS 7122:1989

Current

Current

The latest, up-to-date edition.

Specification for welded steel tanks for the road transport of liquefiable gases

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

08-31-1989

US$184.93
Excluding Tax where applicable

Foreword
Committees responsible
Specification
Section one. General
1. Scope
2. Definitions
3. Design, manufacture and testing of tanks
4. Information to be supplied by the purchaser and
    the manufacturer
5. Certificate of acceptance
Section two. Materials
6. General
7. Identification
8. Condition
9. Analysis
10. Permissible materials
11. Impact and intercrystalline corrosion tests
Section three. Design
12. General
13. Welds
14. Valves and fittings
15. Pressure relief devices
Section four. Manufacture and workmanship
16. General
17. Tolerances
18. Post weld heat treatment
Section five. Inspection and tests
19. General
20. Production control test plates
21. Pressure tests
22. Water capacity
23. Marking
Appendices
A. Typical acceptance certificate
B. Side protection
Tables
1. Impact values
2. Intercrystalline corrosion test
3. Design stress values for austenitic steel bars
4. Design pressure for toxic gases in uninsulated tanks
5. Design pressure for non-toxic gases in uninsulated
    tanks
6. Constant C for gas or vapour related to the ratio
    of specific heat capacities (K = Cp/Cv) at
    standard conditions
Figures
1. Location of side protection relative to the
    horizontal centreline of the tank
2. Section of guard rail

Material, design, construction and testing. Tanks with manually and/or automatically welded circumferential and longitudinal seams. May also be used for portable tanks with capacity greater than 1000 L.

Committee
PVE/19
DevelopmentNote
Supersedes 82/70979 DC (09/2005) Reviewed and confirmed by BSI, December 2009. (11/2009)
DocumentType
Standard
Pages
20
PublisherName
British Standards Institution
Status
Current

This British Standard specifies requirements for the material, design, construction and testing of the tanks of road tankers used for the conveyance by road of liquefiable gases under pressure. It applies to steel tanks having manually and/or automatically welded circumferential and longitudinal seams.

It does not cover vacuum insulated tanks and drums.

This standard may also be used as a specification for the materials, design, construction and testing of portable tanks (e.g. the tanks of tank containers) with a capacity greater than 1 000 L, in which case 12.6 and 12.7 do not apply.

In addition to the definitive requirements, this British Standard also requires the items detailed in clause 4 to be documented. For compliance with this British Standard, both the definitive requirements and the documented items have to be satisfied. A model form of acceptance certificate is given in Appendix A.

The requirements for design, manufacture and testing of tanks are based on those specified for construction category 1 components of BS 5500 and as far as possible are covered by direct cross-references to the relevant requirements in sections 2, 3, 4 and 5 of BS 5500, and to the requirements of other relevant British Standards.

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.

BS 1501-3:1973 Specification for steels for fired and unfired pressure vessels. Plates. Corrosion and heat resisting steels. Imperial units
BS 4882:1973 Specification for bolting for flanges and pressure containing purposes
BS 1501-2:1988 Steels for pressure purposes Specification for alloy steels: plates
BS 1837:1970 Methods for the sampling of iron, steel, permanent magnet alloys and ferro-alloys
BS 3602-1:1987 Specification for steel pipes and tubes for pressure purposes: carbon and carbon manganese steel with specified elevated temperature properties Specification for seamless and electric resistance welded including induction welded tubes
BS 341-1:1962 Transportable gas container valves Valves with taper stems (excluding valves used for breathing and medical purposes)
BS 1503:1989 Specification for steel forgings for pressure purposes
BS 5500:1988 Specification for unfired fusion welded pressure vessels
BS 5355:1976 Specification for filling ratios and developed pressures for liquefiable and permanent gases
BS 4250-1:1987 Liquefied petroleum gas Specification for commercial butane and propane
BS 3951-2.3(1983) : 1983 FREIGHT CONTAINERS - SPECIFICATION AND TESTING OF SERIES 1 FREIGHT CONTAINERS - TANK CONTAINERS FOR LIQUID AND GASES
BS 4580:1970 Specification for number designation of organic refrigerants
ISO 377:2017 Steel and steel products — Location and preparation of samples and test pieces for mechanical testing

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