BS 806:1993
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
04-07-2002
English
15-09-1993
Committees responsible
Summary of pages
Foreword
Section one. General
1.1 Scope
1.2 Interpretation
1.3 Definitions and prime symbols
1.4 Information and requirements to be agreed
and to be documented
Section two. Design pressures and temperatures
2.1 General
2.2 Design pressure for steam piping
2.3 Design temperature for steam piping
2.4 Design conditions for feed piping
2.5 Design pressure for blowdown and drain systems
2.6 Design temperature for blowdown and drain systems
2.7 Design conditions for safety valve discharge
piping
2.8 Design lifetime
Section three. Materials and maximum permissible design
pressures, temperatures and stresses
3.1 Materials
3.2 Maximum permissible design pressures, temperatures
and stresses
Section four. Design
4.1 General
4.2 Thickness of wrought steel straight pipes
4.3 Wrought steel bent pipes
4.4 Gusseted bends
4.5 Thickness of cast steel straight pipes and bends
4.6 Thickness of cast iron pipes and fittings
4.7 Joints
4.8 Branches
4.9 Safety valve discharge piping and safety valve
mounting
4.10 Expansion allowance
4.11 Flexibility
4.12 Drainage
4.13 Pipework supports
Section five. Construction and workmanship
5.1 General
5.2 Heat treatment and final condition
5.3 Welding
5.4 Attachment of branches
5.5 Attachment of flanges
5.6 Ovality of bend pipes
5.7 Gusseted bends
5.8 Condition of pipes
5.9 Marking of pipes
5.10 Erection of pipework
Section six. Inspection and testing
6.1 Tests on pipes and fittings
6.2 Hydraulic tests on pipe systems after erection
6.3 Visual and non-destructive examination
6.4 Identification of materials
Appendices
A Pressures in safety valve discharge piping
B Derivation of material nominal design stresses
C Examples of branch pipe design
D Coefficient of linear expansion for pipes
E Recommended proof and rupture data in connection with
flexibility analysis
F Worked example of stress calculation in a sectionalized
pipe system
G Flexibility flow chart
H Alternative methods for evaluation of stresses in
branches subject to moment load
J Branch connections - Design by analysis
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