AS 3751-1990

1 - AS 3751-1990 UNDERGROUND MINING-SLOPE HAULAGE-COUPLINGS, DRAWBARS, AND SAFETY CHAINS
4 - PREFACE
5 - CONTENTS
6 - FOREWORD
7 - 1 SCOPE.
7 - 2 REFERENCED DOCUMENTS.
7 - 3 DEFINITIONS.
7 - 3.1 Shall
7 - 3.2 Should
7 - 3.3 Statutory Authority
7 - 3.4 Approved and approval
7 - 3.5 Coupling
7 - 3.6 Sl ope haulage
7 - 3.7 Drawbar
7 - 3.8 Coupling pin
7 - 3.9 Pivot pin
7 - 3.10 Safety chain
7 - 3.11 Conveyance
7 - 3.12 Safe working load
7 - 3.13 Static factor of safety
7 - 3.14 Ultimate load
7 - 4 MATERIALS.
7 - 4.1 Component type designation.
8 - 4.2 Type A components.
8 - 4.3 Type B components.
8 - 4.4 Type C components.
8 - 4.5 Type D components.
8 - 4.6 Safety chains.
8 - 5 DESIGN.
8 - 5.1 Static factor of safety.
8 - 5.2 Threaded components.
8 - 5.3 Safety chains.
8 - 6 MANUFACTURE.
8 - 6.1 All components.
8 - 6.2 Type A components.
8 - 6.3 Threads and nut locking.
8 - 6.4 Protective coatings.
8 - 6.4.1 Type A and Type C components.
8 - 6.4.2 Type B and Type D components
8 - 7 TESTING.
8 - 7.1 General.
8 - 7.2 Proof load test.
8 - 7.2.1 Procedure
9 - 7.2.2 Requirement
9 - 7.3 Non-destructive test.
9 - 7.3.1 Purpose
9 - 7.3.2 Procedure
9 - 7.3.3 Welds
9 - 8 TEST CERTIFICATES.
9 - 8.1 Certificates required.
9 - 8.2 Component certificates.
9 - 8.3 Assembl y test certificate.
9 - 9 MARKING.
15 - APPENDIX A - REQUIREMENTS FOR STEEL FOR TYPE A COMPONENTS
15 - A1 SCOPE.
15 - A2 CHEMICAL COMPOSITION.
15 - A2.1 General.
15 - A2.2 Cast analysis.
15 - A2.3 Residual elements.
15 - A2.4 Product analysis.
15 - A2.5 Austenitic grain size.
16 - A3 IDENTIFICATION.
16 - A4 CONDITIONS OF SUPPLY.
16 - A5 MECHANICAL PROPERTIES AND HEAT TREATMENT REQUIREMENTS.
16 - A5.1 Mechanical properties.
16 - A5.2 Heat treatment.
16 - A6 DETERMINATION OF MECHANICAL PROPERTIES.
16 - A6.1 General.
17 - A6.2 Samples for testing.
17 - A6.3 Tensile test.
17 - A6.4 Impact tests.
17 - A6.5 Requirements.
17 - A7 RETESTS.
17 - A8 CERTIFICATES.
18 - APPENDIX B - PERMISSIBLE IMPERFECTIONS FOR MAGNETIC PARTICLE INSPECTION
18 - B1 SCOPE.
18 - B2 GENERAL.
18 - B3 LIMITS OF PERMISSIBLE IMPERFECTIONS.
18 - B4 DESIGNATION.
18 - B5 RECORD.
22 - APPENDIX C - RECOMMENDATIONS FOR INSPECTION AND MAINTENANCE
22 - C1 SCOPE.
22 - C2 LEVEL OF INSPECTION.
22 - C3 FREQUENCY OF INSPECTION.
22 - C4 INSPECTION AFTER AN INCIDENT.
22 - C5 MAINTENANCE.
24 - APPENDIX D - INFORMATION ON RULING SECTION AND EQUIVALENT SECTION
24 - D1 SCOPE.
24 - D2 GENERAL.
24 - D3 RULING SECTION.
24 - D4 EQUIVALENT SECTION.
27 - APPENDIX E - DESIGN GUIDELINES FOR THREADED COMPONENTS
27 - E1 SCOPE.
27 - E2 GENERAL CONSIDERATIONS.
27 - E3 STATIC DESIGN.
28 - E4 FATIGUE DESIGN.