AS 3785.1-1990

1 - AS 3785.1-1990 UNDERGROUND MINING-SHAFT EQUIPMENT - DRUM WINDING OVERWIND SAFETY CATCH SYSTEMS
4 - PREFACE
4 - CONTENTS
5 - FOREWORD
6 - 1 SCOPE
6 - 2 DEFINITIONS
6 - 2.1 Shall
6 - 2.2 Should
6 - 2.3 Statutory Authority
6 - 2.4 Approved and approval
6 - 2.5 Safe working load
6 - 2.6 Overwind safety catch system
6 - 2.7 Detaching hook
6 - 2.8 Catchplate/Detaching bell
6 - 2.9 Conveyance
6 - 2.10 Headframe
6 - 2.11 Overwind
6 - 2.12 Point of entry
6 - 2.13 Point of engagement
6 - 2.14 Point of detach
6 - 2.15 Point of impact
6 - 2.16 Fall- back di stance
6 - 2.17 Detach velocity
6 - 2.18 Operating di stance
6 - 3 MATERIALS
10 - 4 DESIGN
10 - 4.1 Operating distance.
10 - 4.2 Point of detach.
10 - 4.3 Length of engagement.
10 - 4.4 Fall- back distance.
10 - 4.5 Stability.
10 - 4.6 Allowance for clearance.
10 - 4.7 Energy- absorbing device.
10 - 4.8 Release.
10 - 5 TESTING.
10 - 5.1 General.
10 - 5.2 Type test.
10 - 5.2.1 Purpose
10 - 5.2.2 Procedure
10 - 5.3 Component test.
10 - 5.3.1 Purpose
10 - 5.3.2 Procedure
10 - 6 TEST CERTIFICATES
10 - 6.1 Certificates required.
11 - 6.2 Type test certificate.
11 - 6.3 Component test certificate.
12 - APPENDIX A - INFORMATION TO BE PROVIDED BY THE PURCHASER
12 - APPENDIX B - INFORMATION TO BE PROVIDED BY THE SUPPLIER

Specifies requirements for overwind safety catch systems in vertical shaft drum winding installations. Covers design, materials and testing. Appendices provide guidelines on the information to be provided by the purchaser and the supplier.

This Standard specifies requirements for overwind safety catch systems in vertical shaft drum winding installations.This Standard does not apply to vertical shaft friction winding installations and it makes no provision for an overwind with a detach velocity greater than the maximum detach velocity.NOTE: Guidelines on information to be provided by the purchaser and the supplier are given in Appendices A and B.