DEFSTAN 02-797(PT1)/2(2008) : 2008

Foreword
1 Scope
2 Warning
3 Related Documents
4 Requirements
  4.1 Drawings
  4.2 Environmental Conditions
  4.3 Pipework and Fittings
       4.3.1 General
  4.4 Flexible Pipes and Bellows
  4.5 Test and Examination Requirements
       4.5.1 Pressure Tests
       4.5.2 System Test Pre
       4.5.3 Non-Destructive Examination
  4.6 Cleaning, Preservation, Painting and Protection
       4.6.1 Cleaning
       4.6.2 Preservation and Painting
       4.6.3 Protection
  4.7 Identification
5 Design Requirements/Guidance
  5.1 General Design Requirements
       5.1.1 Arrangements
       5.1.2 Flexibility
       5.1.3 Support
       5.1.4 Reduced Pressure Systems
  5.2 Sizing of Pipes
  5.3 Pipe Stressing
  5.4 Rigid Plastic Pipes
  5.5 Joints
  5.6 Permanent Joints
       5.6.1 Welded Joints
       5.6.2 Butt Welds
       5.6.3 Sleeve and Socket Welds
       5.6.4 Brazed Joints
  5.7 Breakable Joints
       5.7.1 Flanges for Low Pressure Systems
       5.7.2 Flanges for High Pressure Hydraulic Systems
       5.7.3 Flanges for High Pressure Sea Water Systems
       5.7.4 Flanges for High Pressure Steam and Feed Systems
       5.7.5 Screwed Connections for Low Pressure Systems
       5.7.6 Split Collet Couplings for High Pressure Air and
              Hydraulic Systems
       5.7.7 Compression Fittings
       5.7.8 Twin Ferrule Connectors
  5.8 Valves
       5.8.1 General
       5.8.2 Bulkhead and Hull Valves, HM Surface Ships
       5.8.3 Bulkhead Valves, Submarines
  5.9 Instrumentation
       5.9.1 Pressure Gauges
       5.9.2 Thermometers
  5.10 Safety Precautions
  5.11 Installation
       5.11.1 General
       5.11.2 Flexible Hoses, Pipes and Bellows
       5.11.3 Pipe Clips
Annex A - Abbreviations and Definitions

Describes the general design, provision, installation and testing requirements for fluid system pipework in HM Surface Ships and Submarines.