Specifies requirements for couplings, drawbars, and safety chains that connect slope haulage conveyances in underground mines. Covers design, materials, manufacture, testing, and marking.
Table of contents
Header
About this publication
Preface
1 Scope
2 Referenced documents
3 Definitions
4 Materials
4.1 Component type designation
4.2 Type A components
4.3 Type B components
4.4 Type C components
4.5 Type D components
4.6 Safety chains
5 Design
5.1 Static factor of safety
5.2 Axially loaded threaded components
5.3 Safety chains
6 Manufacture
6.1 All components
6.2 Type A components
6.3 Safety chains
6.4 Threads and nut locking
6.5 Protective coatings
6.5.1 Type A and Type C component
6.5.2 Type B and Type D components
7 Testing
7.1 General
7.2 Proof load test
7.2.1 Procedure
7.2.2 Pass criterion
7.3 Non-destructive test
7.3.1 Purpose
7.3.2 Procedure
7.3.3 Welds
8 Test certificates
8.1 Certificates required
8.2 Component certificates
8.3 Assembly test certificate
9 Marking
10 Usage
11 Inspection and maintenance
Appendix A
A1 Scope
A2 Level of inspection
A3 Frequency of inspection
A4 Inspection after an incident
A5 Maintenance
Appendix B
B1 Scope
B2 General
B3 Ruling section
B4 Equivalent section
Appendix C
C1 Scope
C2 General considerations
C3 Static design
C4 Fatigue design
Appendix D
D1 Scope
D2 Chemical composition
D2.1 General
D2.2 Cast analysis
D2.3 Residual elements
D2.4 Product analysis
D2.5 Austenitic grain size
D3 Identification
D4 Conditions of supply
D5 Mechanical properties and heat treatment requirements
D5.1 Mechanical properties
D5.2 Heat treatment
D6 Determination of mechanical properties
D6.1 General
D6.2 Samples for testing
D6.3 Tensile test
D6.4 Impact tests
D6.4.1 Hot-rolled steel and forged steel components
