BS 806:1993

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

Describes requirements for the design and construction, including materials and design parameters, workmanship, inspection and testing, for ferrous pipes and pipping installations for and in connection with land boilers.