DEFSTAN 02-348/2(2008) : 2008

Foreword
1 Scope
2 Warning
3 Normative References
4 Definitions
5 Abbreviations
6 Performance Specification
   6.1 Scope of Steam System
   6.2 Steam System Safety
   6.1 Steam System Requirements
   6.2 Steam System Parameters
   6.3 Coded Steam Systems
   6.4 Environmental Conditions
7 National/International Regulations
   7.1 Pressure Equipment and Systems Safety Regulations
8 Military Standards/Requirements
   8.1 General Requirements
   8.2 Safety Management
   8.3 Design Codes
        8.3.1 Code Pipework
        8.3.2 Current Standards (Codes) for Design of Steam
               Systems
   8.4 Submarine Steam Systems
        8.4.1 Quality
        8.4.2 System Failure
   8.5 Human Factors
        8.5.1 Human Factors Guidance
   8.6 Maintenance Philosophy
   8.7 System Drainage Requirements
   8.8 Noise, Vibration and Shock Requirements
        8.8.1 Noise and Vibration Requirements
        8.8.2 Shock Requirements
        8.8.3 Shock Calculations and Analysis
   8.9 System Life Requirements
   8.10 Composition of Steam Systems
   8.11 Materials
        8.11.1 Materials Selection Criteria
        8.11.2 Jointing Materials
   8.12 System Insulation/Lagging Requirements
   8.13 Welding/Joining Requirements
        8.13.1 Welded Joints
        8.13.2 Flanged Joints
   8.14 Valves
   8.15 Branch Connections
   8.16 Bulkhead Penetrations
   8.17 Supports and Hangers
   8.18 Expansion Compensation
   8.19 Lubrication
9 Design Requirements/Guidance
   9.1 General Requirements
   9.2 Design Process
   9.3 Design Requirements
        9.3.1 Preferred Dimensions
        9.3.2 Pipe Wall Thickness
        9.3.3 Allowable Pipe Mean Wall Thickness
        9.3.4 Minimum Allowable Pipe Wall Thickness
        9.3.5 Determining Pipe Size
        9.3.6 Velocities
        9.3.7 Pressure Drop
   9.4 Steam Pipework Corrosion
        9.4.1 Corrosion Assessment
        9.4.2 Causes of Corrosion
        9.4.3 Corrosion Rates
        9.4.4 Design to Reduce Corrosion
   9.5 Stress Calculation
        9.5.1 Calculation Requirements
        9.5.2 Computer Based Analysis
        9.5.3 Static Stress Analysis (Hand Calculation)
   9.6 Design Requirements and Considerations for Flexibly
        Mounted Pipework
        9.6.1 Flexible Connections
        9.6.2 Design Considerations
        9.6.3 Forced Resonant Vibration
        9.6.4 Effects of Flexible Joints
        9.6.5 Flexible Mounts
        9.6.6 Effect on Pipework
   9.7 System Validation and Testing
10 Corporate Experience & Knowledge
   10.1 System Designation
   10.2 System Drainage
   10.3 Materials
   10.4 Design Authority Requirements
   10.5 Pressure Tests
   10.6 Steam Drain Pintle
   10.7 Valve Gland failure
   10.8 Dehumidification
   10.9 Chemistry Control
Annex A - Normative References
Annex B - Abbreviations

Provides guidance on the following: 1) The design, manufacture, installation and testing of Steam Systems pipework for HM Surface Ships and Submarines; 2) Static and dynamic stress analyses and the interpretation of results; 3) Preferred methods for sizing and supplying pipework using existing design codes; 4) Assessment and control of corrosion in HM Surface Ships and Submarines Steam Systems pipework; 5) Requirements for Shock, Noise and Vibration for Steam Systems pipework.