BS PD5500(2012) : 2012

Foreword
Section 1. General
1.1 Scope
1.2 Interpretation
1.3 Definitions
1.4 Responsibilities
1.5 Information and requirements to be agreed and
     to be documented
1.6 Thicknesses
Section 2. Materials
2.1 Selection of materials
2.2 Materials for low temperature applications
2.3 Nominal design strength
Section 3. Design
3.1 General
3.2 Application
3.3 Corrosion, erosion and protection
3.4 Construction categories and design stresses
3.5 Vessels under internal pressure
3.6 Vessels under external pressure
3.7 Supports, attachments and internal structures
3.8 Bolted flanged connections
3.9 Flat heat exchanger tubesheets
3.10 Design of welds
3.11 Vessels with external jackets or limpet coils
3.12 Manholes, inspection openings and quick release
     openings
3.13 Protective devices for excessive pressure or
     vacuum
Section 4. Manufacture and workmanship
4.1 General aspects of construction
4.2 Cutting, forming and tolerances
4.3 Welded joints
4.4 Heat treatment
4.5 Surface finish
Section 5. Inspection and testing
5.1 General
5.2 Approval testing of fusion welding procedures
5.3 Welder and operator approval
5.4 Production control test plates
5.5 Destructive testing
5.6 Non-destructive testing
5.7 Acceptance criteria for weld defects revealed
     by visual examination and non-destructive testing
5.8 Pressure tests
5.9 Inspection requirements for cast components
Annexes
Annex A - Requirements for design where loadings
          and components are not covered by Section 3
Annex B - Requirements for cylindrical, spherical and
          conical shells under combined loadings,
          including wind and earthquakes
Annex C - Assessment of vessels subject to fatigue
Annex D - Requirements for vessels designed to
          operate below 0 degree C
Annex E - Recommendations for welded connections
          of pressure vessels
Annex G - Recommendations for the design of local loads,
          thermal gradients, etc.
Annex H - Recommendations for post-weld heat treatment
          of dissimilar ferritic steel joints
Annex J - Recommendations for pressure relief protective
          devices
Annex K - Requirements for design stresses for British Standard
          materials
Annex L - Guidance on structural tolerances
Annex M - Requirements for establishing the allowable external
          pressure for cylindrical sections outside the
          circularity limits specified in 3.6
Annex N - Requirements for vessel design and the provision
          of information concerning UK statutory
          requirements for the demonstration of the
          continued integrity of pressure vessels
          throughout their service life
Annex Q - Recommendations for preparation and testing of
          production control test plates
Annex R - Guidance on additional information for flat ends
          and flat plates
Annex S - Guidance on optional documentation for supply
          with vessel
Annex T - Recommendations for arc welded tube to tubeplate
          joints
Annex U - Guidance on the use of fracture mechanics analyses
Annex V - Requirements for testing and inspection of serially
          produced pressure vessels
Annex W - Worked examples
Annex Z - Guidance on the application of PD 5500 to pressure
          vessels falling within the scope of the European
          Pressure Equipment Directive
Supplements
Aluminium supplement: Requirements for aluminium and
aluminium alloys in the design and construction of unfired
fusion welded pressure vessels
Copper supplement: Requirements for copper and copper
alloys in the design and construction of unfired fusion
welded or brazed pressure vessels
Nickel supplement: Requirements for nickel and nickel alloys
in the design and construction of unfired fusion
welded pressure vessels
Titanium supplement: Requirements for titanium and titanium
alloys in the design and construction of unfired
fusion welded pressure vessels
Index
List of references

Describes requirements for the design, construction, inspection, testing and verification of compliance of new unfired fusion welded pressure vessels.