DEFSTAN 02-617/2(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 Verification
            1.2 System Validation
SECTION 2 - NATIONAL/INTERNATIONAL REGULATIONS
SECTION 3 - MILITARY STANDARDS/REQUIREMENTS
SECTION 4 - DESIGN REQUIREMENTS/GUIDANCE
            4.1 General System Description
                4.1.1 Introduction
                4.1.2 Magnetic Signature Requirement
                4.1.3 Magnetic Signature Apportionment
                      4.1.3.1 General
                      4.1.3.2 Ferromagnetic Field
                      4.1.3.3 Eddy Current Field
                      4.1.3.4 Stray Field
            4.2 Magnetic Signature Control
                4.2.1 General
                4.2.2 Contractor's Average Relative Permeability
                      Checks
                4.2.3 Contractor's Magnetic Field Measurements
                4.2.4 Magnetic Land Ranging
                4.2.5 Position and Orientation on the Vessel of
                      Equipment Containing Magnetic Sources
                4.2.6 Magnetic Sea Ranging
                4.2.7 Magnetic Signature Tracking
            4.3 Extra Low Frequency Electromagnetic and
                Underwater Electric Potential Fields
            4.4 Design Guide
                4.4.1 Introduction
            4.5 Design Guide-Ferromagnetic Field Source
                4.5.1 General
                4.5.2 Materials having an Electromagnetic Function
                4.5.3 Materials Requiring Mechanical Strength
                4.5.4 Materials where there is no Practicable
                      Alternative
            4.6 Design Guide-Eddy Current Field Sources
            4.7 Design Guide-Stray Field Sources
                4.7.1 General
                4.7.2 Detailed Principles
                4.7.3 Stray Field Design Guide for the
                      Arrangement of Cables
                4.7.4 Stray Field Design Guide for the
                      Arrangement of Batteries
                4.7.5 Stray Field Design Guide for Motor
                      Generators
                4.7.6 Stray Field Design Guide for Induction
                      Clutches
                4.7.7 Stray Field Design Guide for Solenoid
                      and Resistors
                4.7.8 Stray Field Design Guide for Switch
                      and Contactor Panels
            4.8 Design Guide-Working, Handling, Stowage,
                Packaging and Transport of Materials
                4.8.1 General Principles
                4.8.2 Detailed Principles and Guidelines-Magnetic
                      Fields
                4.8.3 Detailed Principles and Guidelines-Mechanical
                      Stress
                4.8.4 Detailed Principles and Guidelines-Temperature
            4.9 Detailed Principles and Guidelines-Contamination
            4.10 Design Guides-Compensation Methods
            4.11 Design Requirements for HUNT and SRMH
                 4.11.1 Introduction
            4.12 Design Requirement-Ferromagnetic Field Sources
                 4.12.1 General
                 4.12.2 To Calculate Average Relative Magnetic
                        Permeability
            4.13 Design Requirements-Eddy Current Field Sources
                 4.13.1 General
                 4.13.2 Sheet Materials
                 4.13.3 Frames and Pipes
            4.14 Design Requirements-Stray Field Sources
            4.15 Sources of Guidance
SECTION 5 - CORPORATE KNOWLEDGE AND EXPERIENCE
ANNEX A - RELATED DOCUMENTS
ANNEX B - ABBREVIATIONS AND DEFINITIONS
ANNEX C - PROCUREMENT CHECK LIST
ANNEX D - AVERAGE RELATIVE MAGNETIC PERMEABILITY
          D.1 Introduction
          D.2 Definition
          D.3 Assumptions and Approximations
          D.4 Relationship Between Average Magnetic
              Permeability, Land Range Measurements and
              Ship's Magnetic Signatures
ANNEX E - AVERAGE RELATIVE MAGNETIC PERMEABILITY
          E.1 General
          E.2 When to Measure Relative Magnetic Permeability
          E.3 Measuring Relative Magnetic Permeability
          E.4 Measuring Relative Magnetic Permeability-Comments
              and Problems
ANNEX F - CALCULATION OF AVERAGE MAGNETIC PERMEABILITY (HUNT)
ANNEX G - CALCULATION OF AVERAGE MAGNETIC
          PERMEABILITY (SRMH)
ANNEX H - STRAY FIELD-GUIDE FOR THE ARRANGEMENT OF CABLES
          H.1 Direct Current Power Cables
              H.1.1 Four Conductor Quadded Cables
              H.1.2 Double Conductor Cables
              H.1.3 Single Conductor Cables
          H.2 Alternating Current Power Cables
              H.2.1 Phase Conductors in a Common Core
              H.2.2 Phase Conductors in a Separate Cables
          H.3 Cable Terminal Connections
              H.3.1 Compatibility of Cable Runs and Terminals
              H.3.2 Arrangement of Terminals and Approach
                    by Cable Run
              H.3.3 Three Terminal Arrangements
              H.3.4 Connecting Four Single Conductor Cables
                    to Three Terminals
              H.3.5 Connecting Eight Single Conductor Cables
                    to Three Terminals
              H.3.6 Connecting Six Single Conductor Cables
                    to Three Terminals
ANNEX I - STRAY FIELD-GUIDE FOR THE ARRANGEMENT OF BATTERIES
          I.1 Definitions and General Principles
          I.2 Series and Parallel Compensation
          I.3 Positioning of Battery Connecting Bus Bars
          I.4 Positioning of Connecting Bus Bars
          I.5 Preferred Storage Battery Arrangements
          I.6 Battery Arrangement Warning Plates
ANNEX J - STRAY FIELD-GUIDE FOR MOTORS AND GENERATORS
          J.1 Frame Design
              J.1.1 Frame Type
              J.1.2 Frame Material
              J.1.3 Frame Outside Shape
              J.1.4 Current Carrying Leads
          J.2 Poles
              J.2.1 Number of Poles
              J.2.2 Orientation of Field poles
              J.2.3 Magnetic Contact
          J.3 Symmetry and Uniformity
              J.3.1 Air Gaps
              J.3.2 Commutating Poles (Interpoles)
              J.3.3 Number of Turns
              J.3.4 Equalizer Connections
          J.4 Wiring Around the Frame
              J.4.1 Field Coils
              J.4.2 Commutating Coils and Compensating Windings
          J.5 Brush Collector Rings
              J.5.1 Construction
              J.5.2 Arrangement
              J.5.3 Current Take-off Point
              J.5.4 Connections from Brush Collector Rings
              J.5.5 Position of Brush Collector Rings
              J.5.6 Brush Rigging
              J.5.7 Number of Commutator Bars
              J.5.8 Double Armature Machines
ANNEX K - STRAY FIELD-GUIDE FOR INDUCTION CLUTCHES
          K.1 Field Pole Requirements
          K.2 Field Coil Requirements
          K.3 Number of Field Poles
ANNEX L - STRAY FIELD-GUIDE FOR SWITCH AND CONTACTOR PANELS
          L.1 Basic Conductor Arrangement
          L.2 Conductor Bends
              L.2.1 Conductors Lying in Different Planes
                    on Each Side of the Bend
              L.2.2 Conductors Lying in the Same Plane on Each
                    Side of the Bend
          L.3 Devices in Power Circuits
              L.3.1 Power Circuit Arrangements
ALPHABETICAL INDEX

Gives guidance for designers and suppliers of Low Magnetic Signature equipment, Mine Countermeasures Vessels (MCMV).