1. SCOPE
1.1 Purpose
1.2 Application to products
1.2.1 Large, heavy items
2. REFERENCED DOCUMENTS
2.1 Government documents
2.1.1 Issues of documents
2.2 Order of precedence
3. DEFINITIONS
3.1 General
3.2 Levels of product
3.3 Failure
3.3.1 ESS failures
3.3.2 Non-ESS failures
3.4 Supplementary definitions
3.5 Procuring activity
3.6 Contractor
3.7 Seller
4. GENERAL REQUIREMENTS
4.1 ESS requirements
4.2 Test conditions
4.2.1 General environmental requirements
4.2.1.1 Standard ambient
4.2.1.2 Controlled ambient
4.2.1.3 Thermal testing tolerances
4.2.1.4 Vibration testing tolerances
4.2.1.5 Time
4.2.2 Accuracy of test instrumentation calibration
4.3 Test facilities
4.3.1 Test chamber
4.3.2 Vibration apparatus
4.3.3 Quality of air for supplementally air cooled
         equipment
4.4 General instrumentation ground rules
4.5 Vibration test ground rules
4.5.1 Test fixture
4.5.1.1 Fixture checkout
4.5.2 Control excitation
4.6 Performance monitoring requirements
4.7 Failure reporting, analysis and corrective action
       system (FRACAS)
4.7.1 Failures during pre-defect-free test
4.7.2 Failures during defect-free test
4.7.3 Retest
4.8 Sampling
5. DETAILED ENVIRONMENTS
5.1 Environmental stresses
5.1.1 Random vibration spectrum
5.1.1.1 Applied axis determination
5.1.2 Temperature cycling
5.1.2.1 Thermal survey
5.1.2.1.1 Procedure for ambient-cooled equipment
5.1.2.1.2 Procedure for supplementally-cooled
             equipment
5.1.2.2 Thermal ESS tests
5.1.2.2.1 Ambient cooled equipment
5.1.2.2.2 Supplementally cooled equipment
5.2 Total ESS test program
5.2.1 Individual test
5.2.1.1 Examination of product
5.2.1.2 Initial operational test
5.2.2 Environmental test
5.2.2.1 Fixed duration pre-defect-free (PDF) test
5.2.2.1.1 Vibration
5.2.2.1.2 Thermal cycling
5.2.2.2 Defect-free (DF) test
5.3 Final functional operational test
6. NOTES AND CONCLUDING MATERIAL
6.1 Intended use
6.2 Ordering data
6.3 Contractual responsibility considerations
FIGURES
1. Environmental Stress Screening Test Constituents
2. Random Vibration Spectrum
3. Temperature Cycling Profile for Ambient Cooled
      and Supplementally Cooled Equipment
APPENDIX A.
ESS TEST DURATION, REDUCED TESTING AND SAMPLING
10. General
10.1 Scope
10.2 Purpose
20. Applicable documents
30. Assumptions
30.1 Environment effects
30.2 Defect-free verification
40. Analysis
40.1 Setting duration for pre-defect-free (PDF) test
40.2 Cycles vs. dwell time
40.3 Time on test derivation
40.4 Time on test criteria
40.4.1 Test duration
40.4.2 Probability of acceptance (PA)
40.4.3 Percent defective data (alpha)
40.5 PDF time (TPDF)
40.6 DF time (TDF)
40.7 Test Duration
50. Reduced testing and sampling
50.1 Reduced testing limits
50.2 Test options
FIGURE
40.3-1 ESS Characteristic curve
APPENDIX B.
ESS TROUBLESHOOTING PLAN
10. General
10.1 Scope
10.2 Purpose
20. Troubleshooting considerations
20.1 Content
20.2 Considerations
20.2.1 Identifications
20.2.2 Monitoring
20.2.3 Temperature
20.2.4 Vibration