PREN 12336 : DRAFT 96

Foreword
0 Introduction
1 Scope
   1.1 Description of the machines
   1.2 Hazards
   1.3 Validity
2 Normative references
3 Definitions
   3.1 Shield machine
        3.1.1 Simple shield
        3.1.2 Cutter boom shield
        3.1.3 Back-acter shield
        3.1.4 Full face tunnel boring machine (TBM)
        3.1.5 Slurry machine
        3.1.6 Earth pressure balance machine
        3.1.7 Air pressurised shield
        3.1.8 Microtunnelling machine
   3.2 Back-up equipment
        3.2.1 Towed back-up equipment
        3.2.2 Stationary equipment
        3.2.3 Erecting device
        3.2.4 Pipe jacking rig
        3.2.5 Integral air lock
   3.3 Thrust boring machine
   3.4 Auger boring machine
   3.5 Control point
   3.6 Exposed person
   3.7 Main operator
   3.8 Walkway
   3.9 Walkway surface
   3.10 Access opening
   3.11 Servicing point
4 List of hazards
   4.1 Mechanical hazards
   4.2 Electrical hazards
   4.3 Thermal hazards
   4.4 Hazards generated by noise
   4.5 Hazards generated by vibrations
   4.6 Hazards generated by radiation
   4.7 Hazards generated by materials & substances
   4.8 Hazards generated by neglect of ergonomic principles
   4.9 Hazards caused by failure of energy supply
   4.10 Hazards caused by missing and/or incorrectly
        positioned safety related measures
5 Requirements and/or measures
   5.1 General safety requirements
        5.1.1 General
        5.1.2 Materials
        5.1.3 Contact surfaces
               5.1.3.1 Hazards due to sharp and rough parts
               5.1.3.2 Hazards due to hot surfaces
        5.1.4 Protection against ruptured hoses and pipes
        5.1.5 Cutter Head on TBM's
        5.1.6 Handling of heavy loads
               5.1.6.1 Handling of machine parts etc
               5.1.6.2 Handling of elements for ground support
        5.1.7 Loss of stability
               5.1.7.1 Rotation
               5.1.7.2 High compressive loads generated within
                        pipe jacking rigs
               5.1.7.3 Structural collapse of the shield
               5.1.7.4 Gripping and regripping
        5.1.8 Access to and egress from operating positions
               and servicing points
               5.1.8.1 Walkways
               5.1.8.2 Access openings
        5.1.9 Protection against falling objects, face
               collapse & flood
               5.1.9.1 Falling objects
               5.1.9.2 Face collapse
               5.1.9.3 Flood
   5.10 Isolation of power supply
   5.11 Energy supply other than electricity
   5.12 Fire protection
        5.12.1 General
        5.12.2 Fire extinguishing systems
        5.12.3 Installation of fire extinguishing systems
   5.13 Storage of safety equipment for personnel
   5.14 Extra equipment
   5.15 Indicators
        5.15.1 Marking
        5.15.2 Warning signs
        5.15.3 Warning devices
        5.15.4 Symbols
   5.16 Maintenance
        5.16.1 General
        5.16.2 Maintenance 0088
        5.16.3 Work on cutter heads
6 Information for use
   6.1 General
   6.2 Instruction handbooks
        6.2.1 General
        6.2.2 Identification of handbooks
        6.2.3 Content of operator's handbook
        6.2.4 Content of maintenance handbook
        6.2.5 Spares handbook
7 Verification of the safety requirements and/or measures
Annex A (informative) Informative references and bibliography
Annex B (informative) Relationship of this standard with EU
        Directives

Defines all types of shield machines and associated back-up equipment, horizontal thrustboring machines and auger boring machines or parts thereof.