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This standard establishes safety requirements pertaining to the construction of tunnels, shafts and caissons. The requirements set forth in this standard cover environmental control; related facilities; fire prevention; hoisting; haulage; electrical, drilling and blasting; and compressed air work....
This standard establishes safety requirements pertaining to the construction of tunnels, shafts and caissons. The requirements set forth in this standard cover environmental control; related facilities; fire prevention; hoisting; haulage; electrical, drilling and blasting; and compressed air work. This standard is not intended for application to mining or quarrying operations.
1. General 1.1 Scope 1.2 Purpose 1.3 Exceptions 2. References Standards 2.1 Related American National Standards 2.2 Other Standards 3. Definitions 4. General Provisions 4.1 Accident Prevention Program 4.2 Inspection and Maintenance of Excavations 4.3 Access 4.4 Existing Utilities 4.5 Safety Precautions 4.6 Protection Against Flooding 4.7 Protection of Openings 4.8 Structural Adequacy 4.9 Shaft and Tunnel Lining, Roof Support and Rock Bolting 4.10 Stairways 4.11 Ladders 4.12 Platforms, Runways and Ramps 4.13 Lasers 4.14 Tunnel and Raise Boring Machines 4.15 Raising Boring 5. Environmental Control 5.1 Ventilation 5.2 Oxygen 5.3 Air Quality 5.4 Testing Records 5.5 Internal-Combustion Engines 6. Related Facilities 6.1 First Aid and Medical 6.2 Drinking Water 6.3 Toilets 6.4 Change House 6.5 Communication Systems 6.6 Rescue Equipment and Personnel 7. Fire Prevention 7.1 General 7.2 Combustible Structures 7.3 Combustible Materials 7.4 Storage and Handling of Flammable and Combustible Liquids 7.5 Welding or Cutting 8. Hoisting 8.1 General 8.2 Emergency Provisions 8.3 Construction 8.4 Operation 8.5 Maintenance 9. Haulage Systems 9.1 Track 9.2 Automatic Derailers 9.3 Holding Devices on Inclines 9.4 Locomotives and Similar Off-Track Equipment 9.5 Transportation of Workers 9.6 Automatic Coupling Devices 9.7 Block Signals 9.8 Safe Access 9.9 Mobile Equipment 10. Electrical 10.1 General 10.2 Illumination 10.3 Conductors 10.4 Grounding of Equipment 10.5 Protection of Circuits 10.6 Protection of Personnel 10.7 Protection of Equipment 10.8 Switchboards 10.9 Transformers 10.10 Switches and Circuit Breakers 10.11 Battery Charging 10.12 Lightning Arresters 11. Drilling and Blasting 11.1 Regulations 11.2 Drilling Operations 12. Compressed Air 12.1 General 12.2 Air Plant 12.3 Locks 12.4 Medical Care of Compressed-Air Workers 12.5 Compressed-Air Operations 12.6 Fire Prevention Under Compressed Air 13. Training 13.1 Designated Persons 13.2 Lockout/Tagout 13.3 Compressed Air 13.4 Emergency Action Appendices Appendix A – Instruction for the Guidance of Compressed-Air Workers Appendix B – Survey of Job Site
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