MIL-STD-188-125-2 Base Document:1999

FOREWORD
1 SCOPE
      1.1 Purpose
      1.2 Scope
      1.3 Applications
      1.4 Objectives
2 APPLICABLE DOCUMENTS
      2.1 General
      2.2 Government documents
             2.2.1 Specifications, standards, and
                      handbooks
             2.2.2 Other Government documents, drawings,
                      and publications
      2.3 Non-Government publications
      2.4 Order of precedence
3 DEFINITIONS
      3.1 Acronyms used in this standard
      3.2 Sources for definitions
      3.3 Definitions
             3.3.1 Aperture point-of-entry (POE)
             3.3.2 Conductive POE
             3.3.3 Continuous wave (CW) immersion
             3.3.4 Corrective maintenance
             3.3.5 Electromagnetic barrier
             3.3.6 Electromagnetic closure
             3.3.7 Electromagnetic stressHM/HS)
             3.3.8 HEMP acceptance test
             3.3.9 HEMP hardness
             3.3.10 HEMP hardness assurance
             3.3.11 HEMP hardness configuration baseline
             3.3.12 HEMP hardness critical item (HCI)
             3.3.13 HEMP hardness critical process (HCP)
             3.3.14 HEMP hardness maintenance (HM)
             3.3.15 HEMP hardness maintenance and hardness
                      surveillance (HM/HS)
             3.3.16 HEMP hardness surveillance (HS)
             3.3.17 HEMP hardness surveillance/
                      reverification testing
             3.3.18 HEMP protection measures
             3.3.19 Intrasite cable
             3.3.20 Long-line cable
             3.3.21 Long-line protection module (LLPM)
             3.3.22 Low-risk HEMP hardening
             3.3.23 Main barrier electrical POE protective
                      device
             3.3.24 Mission-critical systems (MCS)
             3.3.25 Norton equivalent circuit or Norton
                      source
             3.3.26 Penetrating entry area
             3.3.27 Performance degradation
             3.3.28 Point-of-entry (POE)
             3.3.29 POE protective device or POE treatment
             3.3.30 Preventive maintenance
             3.3.31 Primary special electrical POE
                      protective device
             3.3.32 Protected volume
             3.3.33 Pulsed current injection (PCI)
             3.3.34 Residual internal stress
             3.3.35 Retrofit HEMP hardening
             3.3.36 Secondary special electrical POE
                      protective device
             3.3.37 Shielded enclosure leak detection
                      system (SELDS)
             3.3.38 Special protective measures
             3.3.39 Special protective volume
             3.3.40 Subsystem HEMP shield
             3.3.41 Threat-level illumination
             3.3.42 Verification testing
             3.3.43 Vulnerability threshold (of an
                      equipment)
             3.3.44 Waveguide below cutoff (WBC)
             3.3.45 Waveguide-below-cutoff array
4 GENERAL REQUIREMENTS
      4.1 General
             4.1.1 HEMP protection overview
             4.1.2 Integration with related requirements
      4.2 Hardness program overview
      4.3 HEMP hardening design
             4.3.1 Subsystem HEMP shields
             4.3.2 POEs
             4.3.3 External cable plant
             4.3.4 Mission-critical equipment
             4.3.5 HEMP-hardened electrical power
             4.3.6 Special protective measures
      4.4 HEMP testing
             4.4.1 Quality assurance program
             4.4.2 Acceptance testing
             4.4.3 Verification testing
      4.5 HM/HS
             4.5.1 HM/HS program development
             4.5.2 HM/HS program implementation
5 DETAILED REQUIREMENTS
      5.1 HEMP protection topology
             5.1.1 Transportable system topology
             5.1.2 Electromagnetic barrier topology
             5.1.3 Penetration entry area
             5.1.4 External electrical cabling
      5.2 Transportable system grounding
             5.2.1 Equipotential ground plane
             5.2.2 Grounding to the facility HEMP shield
             5.2.3 Long-line protection module grounding
      5.3 Subsystem HEMP shield
             5.3.1 Shielding effectiveness
             5.3.2 Shield configuration
             5.3.3 Shield production quality assurance
             5.3.4 Shield acceptance testing
      5.4 Architectural POEs
             5.4.1 HEMP protection for architectural POEs
             5.4.2 Personnel entryways and exits
             5.4.3 Equipment accesses
             5.4.4 Acceptance testing for architectural
                      POE protective devices
      5.5 Mechanical POEs
             5.5.1 HEMP protection for mechanical POEs
             5.5.2 Piping POEs
             5.5.3 Ventilation POEs
             5.5.4 Acceptance testing for mechanical POE
                      protective devices
      5.6 Structural POEs
             5.6.1 HEMP protection for structural POEs
             5.6.2 Acceptance testing for structural POE
                      protective treatments
      5.7 Electrical POEs
             5.7.1 Electrical POEs
             5.7.2 Long-line protection modules
      5.8 Special protective measures
             5.8.1 MCS outside the main electromagnetic
                      barrier
             5.8.2 MCS that is inside a subsystem
                      electromagnetic barrier and fails
                      verification testing
             5.8.3 Special protective volumes
             5.8.4 Acceptance testing of special
                      protective measures
      5.9 Reliability and maintainability
      5.10 Safety and human engineering
      5.11 Testability
      5.12 Corrosion control
      5.13 Configuration management
      5.14 Verification testing
             5.14.1 CW immersion testing
             5.14.2 PCI verification testing
             5.14.3 Threat-level illumination testing
             5.14.4 Verification testing of special
                     protective measures
      5.15 HM/HS program requirements
             5.15.1 Hardness surveillance/reverification
                     test procedures
             5.15.2 Maintenance and inspection procedures
             5.15.3 Supply support requirements
             5.15.4 Training requirements
             5.15.5 Technical data
             5.15.6 Delivery
             5.15.7 Implementation
6 NOTES
      6.1 Intended use
      6.2 Issues of DoDISS
      6.3 Subject term (key word) listing
Figure 1 - Typical transportable system barrier topology
Figure 2 - Penetration entry area placement
Figure 3 - External cable descriptions
Figure 4 - Minimum HEMP shielding effectiveness requirements
           (measured in accordance with procedures of
           Appendix A)
Figure 5 - Typical vestibule entryway
Figure 6 - Typical waveguide-below-cutoff POE protective
           devices
Figure 7 - Typical waveguide-below-cutoff array ventilation
           POE protective device
Figure 8 - Typical electrical POE protective device
Figure 9 - Typical special protective volumes
Table I - Norton source parameters, waveforms, and acceptance
          test loads for electrical POE injection
          specifications
Table II - Maximum allowable residual internal response norms
           for electrical POE injection specifications
Table III - Norton source parameters, waveforms, and
            acceptance test loads for LLPM injection
            specifications
Table IV - Maximum allowable residual response norms to LLPM
           injection specifications
Table V - Verification test program options
APPENDIX A - SHIELDING EFFECTIVENESS (SE) TEST PROCEDURES FOR
             TRANSPORTABLE GROUND-BASED SYSTEMS
APPENDIX B - PULSED CURRENT INJECTION (PCI) TEST PROCEDURES
             FOR TRANSPORTABLE GROUND-BASED SYSTEMS
APPENDIX C - CONTINUOUS WAVE (CW) IMMERSION TEST PROCEDURES
             FOR TRANSPORTABLE GROUND-BASED SYSTEMS
APPENDIX D - THREAD-LEVEL ILLUMINATION TEST PROCEDURES FOR
             TRANSPORTABLE GROUND-BASED SYSTEMS
CONCLUDING MATERIAL

Gives the minimum performance requirements for low-risk protection from mission-aborting damage or upset due to HEMP threat environments given in MIL-STD-2169.