BS 5045-7:2000

Committees responsible
Foreword
1 Scope
2 Normative references
3 Manufacture and testing of containers
4 Classification of gases
5 Information to be supplied by the purchaser and the
      manufacture
6 Certificate of compliance
7 Permissible materials - General
8 Permissible materials - Chemical composition
9 Permissible materials - Steelmaker's certificate
10 Permissible materials - Identification of steel
11 Design - Service conditions for design
12 Design formulae
13 Design - Fittings
14 Manufacture and workmanship - Approval of design and
      construction details
15 Manufacture and workmanship - Permissible processes
16 Manufacture and workmanship - Heat treatment
17 Manufacture and workmanship - Tolerances
18 Inspection and tests - General
19 Inspection and tests - Hardness tests
20 Inspection and tests - Mechanical tests
21 Inspection and tests - Examination for thickness,
      surface imperfections and neck folds
22 Inspection and tests - Hydraulic tests of seamless
      containers
23 Inspection and tests - Re-heat treatment
24 Inspection and tests - Tightness test
25 Inspection and tests - Testing of prototype containers
26 Inspection and tests - Checking of water capacity
27 Inspection and tests - Results of tests
28 Inspection and tests - Marking of containers
Annex A (informative) Volumetric expansion testing of
                      seamless containers
Annex B (normative) Ultrasonic defect detection and thickness
                    measurement
Annex C (informative) Examples of design calculations for
                      cylindrical walls of seamless containers
Annex D (informative) Specimen certificates
Bibliography
Figure 1 - Hardness numbers related to tensile strengths
Figure 2 - Cylindrical neck folds before and after machining
Figure A.1 - Water jacket volumetric expansion test (leveling
             burette)
Figure A.2 - Water jacket volumetric expansion test (fixed
             burette)
Figure A.3 - Non-water jacket volumetric expansion test
Figure C.1 - Diagram of deriving minimum values of test
             pressure P1
Table 1 - Classification of gases
Table 2 - Steelmaking process and chemical composition of
          permissible materials
Table 3 - Heat treatment and mechanical properties of steel
          in finished containers
Table 4 - Permissible deviation on product analysis from
          specified range of carbon and carbon manganese
          steels
Table 5 - Permissible deviation on product analysis from
          specified range for alloy steels
Table 6 - Reference temperatures for developed pressure for
          conveyance in the UK in uninsulated containers
Table 7 - Formulae for deriving minimum values of test
          pressure P1
Table 8 - Design stresses for permissible steels
Table A.1 - K factors for the compressibility of water

Defines criteria for design, construction, materials and testing of seamless steel containers with water capacity between 0.5 litre and 15 litres for conveying and storing gases under pressure for use in the following applications: for use in aircraft; life raft inflation apparatus; fire extinguishers; resuscitation apparatus; breathing apparatus and underwater breathing dress apparatus. Includes appendices that give examples of design calculations, a description of methods for pressure testing of containers, a description of methods for ultrasonic examination of containers, model forms of design, and acceptance certificates.

This part of BS 5045 specifies the requirements for the materials, design, construction and testing of seamless steel containers of water capacity greater than 0.5 litre up to 15 litres for the conveyance and storage of gases under pressure used in the following portable applications:

• for use in aircraft;
• for breathing apparatus;
• for underwater breathing dress apparatus;
• for resuscitation apparatus;
• for fire extinguishers;
• for life raft inflation apparatus.

It includes appendices giving examples of design calculations, a description of the methods for pressure testing of containers, a description of the methods for ultrasonic examination of containers, model forms of design and acceptance certificates.