DEFSTAN 02-728/2(2001) : INTERIM

TITLE PAGE
SCOPE
FOREWORD
Sponsorship
Conditions of Release
Categories of NES
Related Documents
Health and Safety
Additional Information
CONTENTS
SECTION 1. PERFORMANCE SPECIFICATION
           1.1 Drawings
                1.1.1 System Diagrammatic Arrangement Drawings
                1.1.2 System Ship Arrangement Drawings
                1.1.3 Equipment Drawings
           1.2 Materials
                1.2.1 Material Selection
                1.2.2 Fresh Water Storage Tanks
                1.2.3 Accumulators
                1.2.4 Non-ferrous Pipework
                1.2.5 Steel Pipework
                1.2.6 Valves
           1.3 System General Requirements
                1.3.1 General
                1.3.2 Hot Water System, Services Supplies
                        1.3.2.1 HM Surface Ships
                        1.3.2.2 Submarines
                1.3.3 Battery Top-up Water (Submarines)
           1.4 System Arrangement
                1.4.1 Cold Fresh Water
                        1.4.1.1 HM Surface Ships
Figure 1.1 Typical Domestic Cold Water System for HM Surface Ships
                        1.4.1.2 Submarines
Figure 1.2 Typical Domestic Cold Water System for Submarines
                1.4.2 Hot Fresh Water Systems
                        1.4.2.1 HM Surface Ships
Figure 1.3 Typical Domestic Hot Water System for HM Surface Ships
                        1.4.2.2 Submarines
Figure 1.4 Typical Domestic Hot Water System for Submarines
                1.4.3 Emergency Fresh Water Supply to Sonar Cooling System
           1.5 Desalination Requirements
                1.5.1 General
                1.5.2 Submarines
           1.6 Fresh Water Storage and Filling
                1.6.1 Storage Capacity
                1.6.2 Storage Tank Arrangement
                        1.6.2.1 HM Surface Ships
                        1.6.2.2 Submarines
                1.6.3 Filling Arrangements
                        1.6.3.1 HM Surface Ships
                        1.6.3.2 Submarines
                1.6.4 Sterilization
                1.6.5 Sounding Tubes
                1.6.6 Air Escapes
           1.7 Pump Selection
                1.7.1 General
                1.7.2 Cold Water Pump
Figure 1.5 Domestic Cold Water Pump - Performance Curves
Figure 1.6 Domestic Cold Water Pump - Performance Curves
                1.7.3 Cold Water Boost Pump
                1.7.4 Hot Water Pump
Figure 1.7 Hot Water Circulating Pump -
           Performance Curves (Preferred)
Figure 1.8 Hot Water Circulating Pump -
           Performance Curves (Other Pumps)
                1.7.5 Hot Water Boost Pump
                1.7.6 Pump Protection
           1.8 Calorifiers
                1.8.1 Types of Equipment
                1.8.2 Heating Capacity
                1.8.3 General Requirements
Table 1.1 Scale of Electric Water Heaters
Table 1.2 Range of Alternative Calorifiers
                1.8.4 Submarines
           1.9 Drinking Water and Cooled Fresh Water
                1.9.1 Drinking Water Tanks
                1.9.2 Drinking Water Coolers
                1.9.3 Cooled Fresh Water
           1.10 Auxiliary Components
                1.10.1 Accumulators
Table 1.3 Range of Accumulators
                1.10.2 Submarine Tank Air Pressure Charging Equipment
                1.10.3 Pipework
                1.10.4 Air Release Units
Figure 1.9 Typical Automatic Air Release Valve
           1.11 System Details
                1.11.1 Introduction
                1.11.2 Hot and Cold Water Systems
Table 1.4 Domestic Fresh Water Systems, Pipe Size and Water Speeds
Table 1.5 Equivalent Straight Pipe Length for Valves, Bends, Tees, etc.
Figure 1.10 Piping System Pressure Loss Chart (Fresh Water 10_C)
Figure 1.11 Piping System Pressure Loss Chart (Fresh Water 75_C)
Table 1.6 Example of Pump Fits
                1.11.3 Review of General Design
                1.11.4 Supplies to Wash-basins and Showers
                1.11.5 Diversity Factors for Outlets
Table 1.7 Discharge Rate for Fittings
                1.11.6 Cold Water Pump
Figure 1.12 Diversity Factor: Number of Fittings Connected
                1.11.7 Cold Water Boost Pump
                1.11.8 Pressure at Outlets
Figure 1.13 Wash-basin Taps and Shower Head Fittings -
            Fitting of Orifice Plates
Table 1.8 Range of Orifice Plates
                1.11.9 Hot Water Circulation
Table 1.9 Conditions for Thermo-Syphon
                1.11.10 Selection of Calorifier
Table 1.10 Hot Water Piping Heat Emission and Temperature Drop
                1.11.11 Hot Water System Peak Load
                1.11.12 Hot Water Storage Capacity
Figure 1.14 Hot Water Temperature From Calorifier:
            Time for a Storage Capacity of 0.023 m[3]
Figure 1.15 Hot Water Temperature from Calorifier:
            Time for a Storage Capacity of 0.27 m[3]
Figure 1.16 Hot Water Temperature from Calorifier:
            Time for a Storage Capacity of 0.455 m[3]
Figure 1.17 Hot Water Temperature from Calorifier:
            Time for a Storage Capacity of 0.91 m[3]
Figure 1.18 Hot Water Temperature:
            Time Effect of Change in Storage Capacity
                1.11.13 Electric Water Heaters
                1.11.14 Accumulator for Thermal Expansion
                1.11.15 Provision for Air Removal
Figure 1.19 Typical Air Collecting Vessel
Figure 1.20 Air Collecting Vessel and Manual Air Release
Figure 1.21 Air Collecting Vessel and Automatic Air Release
           1.12 Installation and Testing
                1.12.1 General
                1.12.2 Piping Installation
                1.12.3 Fresh Water Tank Calibration
                1.12.4 Pressure Tests
                        1.12.4.1 Valves
                        1.12.4.2 Fresh Water Tanks
                        1.12.4.3 Pipework in Submarines
                1.12.5 Trials
                1.12.6 Insulation
                1.12.7 Colours and Marking
SECTION 2. NATIONAL/INTERNATIONAL REGULATIONS
           2.1 Materials
                2.1.1 Material Selection
                2.1.2 Fresh Water Storage Tanks
           2.2 Installation and Testing
                2.2.1 Colours and Marking
SECTION 3. MILITARY STANDARDS/REQUIREMENTS
           3.1 Drawings
                3.1.1 System Drawings
                3.1.2 System Diagrammatic Arrangement Drawings
           3.2 Materials
                3.2.1 Material Selection
                3.2.2 Fresh Water Storage Tanks
                3.2.3 Pumps
                3.2.4 Calorifiers
                3.2.5 Non-ferrous Pipework
                3.2.6 Steel Pipework
                3.2.7 Valves
                3.2.8 Screwed Fasteners
                3.2.9 Jointing
                3.2.10 Insulation
           3.3 System General Requirements
                3.3.1 General
                3.3.2 Cold Water System, Services Supplied
                        3.3.2.1 HM Surface Ships
                3.3.3 Hot Water System, Services Supplied
                        3.3.3.1 HM Surface Ships
                3.3.4 Provision of Wash-basins and Showers
           3.4 System Arrangement
                3.4.1 Cold Fresh Water
                        3.4.1.1 HM Surface Ships
                3.4.2 Emergency Fresh Water Supply to Sonar
                        Cooling System
           3.5 Desalination Requirements
                3.5.1 General
           3.6 Fresh Water Storage and Filling
                3.6.1 Storage Tank Arrangements
                        3.6.1.1 HM Surface Ships
           3.7 Pump Selection
                3.7.1 General
           3.8 Auxiliary Components
                3.8.1 Accumulators
                3.8.2 Pipework
                        3.8.2.1 Non-ferrous Piping
                        3.8.2.2 Steel Piping
                        3.8.2.3 Jointing
                3.8.3 Valves
                3.8.4 Strainers
           3.9 Manufacturing Practices
                3.9.1 General
                3.9.2 Welding
                3.9.3 Brazing
                3.9.4 Pipe Manipulation
                3.9.5 Castings
                3.9.6 Fresh Water Storage Tanks
           3.10 Cleaning and Preservation
                3.10.1 General
                3.10.2 Fresh Water Storage Tanks
                3.10.3 Tubes and Pipes
           3.11 Installation and Testing
                3.11.1 Piping Installation
                3.11.2 Fresh Water Tank Calibration
                3.11.3 Inspection and Flushing
                3.11.4 Pressure Tests
                        3.11.4.1 Fresh Water Tanks
                3.11.5 Insulation
                3.11.6 Colours and Marking
SECTION 4. DESIGN REQUIREMENTS/GUIDANCE
           4.1 System General Requirements
                4.1.1 Cold Water System, Services Supplied
                        4.1.1.1 HM Surface Ships
                        4.1.1.2 Submarines
                4.1.2 Hot Water System, Services Supplied
                        4.1.2.1 HM Surface Ships
                        4.1.2.2 Submarines
                4.1.3 Provision of Wash-basins and Showers
           4.2 Fresh Water Storage and Filling
                4.2.1 Storage Tank Arrangement
                        4.2.1.1 Submarines
                4.2.2 Sounding Tubes
SECTION 5. CORPORATE EXPERIENCE & KNOWLEDGE
ANNEX A. RELATED DOCUMENTS
ANNEX B. ABBREVIATIONS AND DEFINITIONS
ANNEX C. PROCUREMENT CHECK LIST
ANNEX D. SAMPLE CALCULATIONS
         D.1. Introduction
         D.2. General Calculations
              Calculation Data Sheet D1/1 - General Calculations
Table D.1 Calculation Data Sheet
         D.3. Water Flow and Approximate Pipe Bore Calculation
              (COLD WATER SYSTEM)
              Calculation Data Sheet D2/1 - Water Flow
              and Approximate Pipe Bore Calculation
              Calculation Data Sheet D2/2 - Water Flow
              and Approximate Pipe Bore Calculation
              Calculation Data Sheet D2/3 - Water Flow
              and Approximate Pipe Bore Calculation
         D.4. Physical Data (Cold Water System)
              Calculation data sheet D3/1 - Physical Data
              Calculation Data Sheet D3/2 - Physical Data
              Calculation Data Sheet D3/3 - Physical Data
         D.5. Pipe Friction Calculations (Cold Water System Main)
              Calculation Data Sheet D4/1 - Pipe Friction Calculations
              Calculation Data Sheet D4/2 - Pipe Friction Calculations
         D.6. Pipe Friction Calculations (Cold Water System Branches)
              Calculation Data Sheet D4/3 - Pipe Friction Calculations.
         D.7. Selection of Cold Water Pump and Cold Water Boost Pump
              Calculation Data Sheets D5 - Selection of Cold Water Pump
              and Cold Water Boost Pump
         D.8. Water Flow Rates from Calorifiers
              Calculation Data Sheet D6 -
              Hot Water Flow From Calorifiers
         D.9. Water Flow and Approximate Pipe Bore Calculation
              (Hot Water System)
              Calculation Data Sheet D7/1 -
              Water Flow and Approximate Pipe Bore Calculation
         D.10. Water Flow and Approximate Pipe Bore Calculation
         D.11. Physical Data (Hot Water System)
               Calculation Data Sheet D8/1 - Physical Data
         D.12. Physical Data for Hot Water Branches (Aft)
               Calculation Data Sheet D8/2 - Physical Data
         D.13. Pipe Friction Calculations (Hot Water System Main)
               Calculation Data Sheet D9/1 - Pipe Friction Calculations
         D.14. Pipe Friction Calculations (Hot Water System Branches)
               Calculation Data Sheet D9/2 - Pipe Friction Calculations
         D.15. Pressures Required and Available at Calorifier(s)
               Calculation Data Sheet D10 - Pressures Required and
               Available at Calorifier(s)
         D.16. Duty of Hot Water Circulating Pump
         D.17. Capacity of Accumulators
               Calculation Data Sheet D11 -
               Duty of Hot Water Circulating Pump
               Calculation Data Sheet D12 - Capacity Of Accumulators
ALPHABETICAL INDEX

Describes the requirements for: a. The design, manufacture, installation, test and Setting to Work (STW) of Domestic Hot and Cold Fresh Water (FW) Systems in Surface Ships and Submarines. b. Requirements for special FW services and duties which may be associated with various types of craft and functions are also included. c. Comprehensive guidance on the design calculations for the systems with sample calculations (see Annex D) for both general and special requirements are given.