BS 7777-4:1993

Committees responsible
Foreword
Specification
1 Scope
2 References
3 Definitions
4 Design conditions
5 Information to be exchanged between the purchaser
      and the contractor
5.1 Information to be supplied by the purchaser
5.2 Information and requirements to be agreed and to
      be documented
6 Inner tank
6.1 Materials
6.2 Plate and fittings
6.3 Shell plate thickness
6.4 Weld metal
6.5 Bolting materials
6.6 Mountings
6.7 Loadings
6.8 Tank design
6.9 Nozzle and access opening design
6.10 Permanent attachments other than manholes and
      nozzles
6.11 Temporary attachments
6.12 Interconnecting mountings (pipework)
6.13 Tank anchorage
7 Outer container
7.1 Materials
7.2 Loadings
7.3 Design
7.4 Mountings
7.5 Stairways, gangways, platforms and ladders
7.6 Anchorage
8 Shop fabrication
9 Site erection
10 Non-destructive testing
10.1 Radiography
10.2 Crack detection
10.3 Leak testing
11 Testing
11.1 General
11.2 Hydrostatic testing
11.3 Pneumatic testing
11.4 Test procedures
12 Cleanliness
13 Insulation
14 Foundation
15 Internal positive and internal negative pressure
      relief
16 Commissioning and decommissioning
17 Name plate
Tables
1 Maximum shell plate thickness
2 Nominal shell thickness
Figure
1 Detail of lap welded inner roof
List of references

Specifies requirements for metallic cryogenic tanks of double wall single containment type operating in the range -180°C to -196°C.