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Lovsuns Tunneling Canada Ltd.
Risk Management - TBM Manufacturers
Perspective II
November 14-16, 2016
Lovsuns Tunneling Canada Ltd.
History of LOVSUNS
350 TBMs Built to Date
Lovsuns Tunneling Canada Ltd.
History of Risk Management Techniques
Developed in the Late 60s by NASA
during the Apollo Mission
In 1974, US Navy Adopted it in the
Weapons Program
In the Late 1970s the Automotive
Industries was Driven by Liability Cost
to Use FMEA and Later Required
Suppliers to do the Same
Lovsuns Tunneling Canada Ltd.
Types of Risk Assessment
System Risk Assessment
Highest Level Risk Assessment and Focus on System Related Deficiencies
such as Safety System, System Interfaces or Integration between
Subsystems to Humans and/or Environment.
Design Risk Assessment
Focuses on Product Design with Emphasis on Minimizing Design Risk and
Ensuring Product Operation is Safe and Reliable During Equipment life.
Process Risk Assessment
Focuses on Operation or Assembly Process with Emphasis on how
Process Risk can be Minimized to Ensure the Product is Built to Design
Requirement in a Safe Manner with Minimal Downtime, Waste and Rework.
Lovsuns Tunneling Canada Ltd.
Types of Risk Assessment
1.0 RME257SE EPB TBM
1.1 Cuttinghead System
1.2 Main Drive System
1.3 Main Drive Sealing System
1.4 RFJ System
1.5 Active Articulation System
1.6 Passive Articulation System
1.7 Airlock System
1.8 Propulsion System
1.8.1 Propulsion Cylinders
1.8.2 Propulsion Pump
1.8.3 Propulsion Manifolds
1.8.4 Propulsion Pads
1.9 Screw Conveyor System
System Level Item
Identification
Design Level Item
Identification
Lovsuns Tunneling Canada Ltd.
Conducting Risk Assessment Analysis
Risk Management Process should be Part of your Project Management
Plan and should Start at the Project Planning Stage:-
Key Inputs Required
- Project Charter
- Project Management Plan
- Stakeholder Register
- Enterprise Environmental factors
- Organizational Process Assets
Lovsuns Tunneling Canada Ltd.
Tips
- Break it Down (by System, by Function, by Process)
- Agreed on a Scaling System First
- Draw From Past Successes and Failures
- Involve the Right People (SME)
- Do it in Multiple Sessions
- Take a Course in Conflict Resolution and How to Manage a Meeting
The Process Does Get Easier the Third Time Around!!!
Conducting Risk Assessment Analysis
Lovsuns Tunneling Canada Ltd.
TBM Suppliers Perspective on Risk
Management
Lovsuns Tunneling Canada Ltd.
TBM Supplier Risk Management
TBM Manufacturers Roles in Project Risk Management
Solution provider
- Types of TBM
- Features on TBM
- Technical Assistance
- Spare Parts Support
Lovsuns Tunneling Canada Ltd.
TBM Suppliers Risk Management
- GBR and Tunnel Alignment
- Equipment Specification and Performance
- Equipment Delivery
- Operation and Maintenance
- Contract Terms
Needed to provide the right tools for
the Project!!!
Lovsuns Tunneling Canada Ltd.
GBR and Tunnel Alignment
Detail Geotechnical Baseline Report containing at a minimum:-
- Quantity and Depth of Bore Hole Analysis
- Groundwater Condition (Expected Inflow and Pressure)
- Grain Size Distribution
- Rock Strength and RMR
- Boulders, Faults, Obstacles along Alignment
- Operating and Maximum EPB Pressure
- Presence of Hazardous Gas
Alignment Details Containing at a minimum:-
- Tunnel Lengths and Shaft/Portal details
- Maximum Vertical Slope and Minimum Horizontal Radius
- Segment Details
Lovsuns Tunneling Canada Ltd.
Equipment Specification and Performance
- Owners requirement Typically very Descriptive
- Local Regulatory Standards and Requirement
- Contractors Equipment Requirement and Performance
Expectation
- Manufacturers Past Experience and Internal Standards
- Transportation, Assembly and Disassembly Restrictions
Lovsuns Tunneling Canada Ltd.
EPB TBM Features that can assist to Mitigate Risks
- Cuttinghead Design
- Tool Selection
- Airlock
- EPB Sensors
- Ground Conditioning
- Probe Drilling
- Emergency Inflatable Seal
- Data logging
Equipment Specification and Performance
Lovsuns Tunneling Canada Ltd.
14mm thick CrC on Cuttinghead Face
19mm thick CrC on Cuttinghead Rim
5 No. injection ports on Cuttinghead face
1 No. Injection ports on Cuttinghead Gauge
Interchangeable Rippers and Disc Cutters
Wear detection on face of Cuttinghead
Cuttinghead opening
32%~35%
Center opening as 50% to
Reduce clogging in the
center
Cuttinghead Design
Lovsuns Tunneling Canada Ltd.
Disc Cutters
Single tip and Twin tip type disc cutters used for mixed ground conditions containing
boulders & hard rock.
Different disc cutter tip spacing are used to cut the rock efficiently.
Lovsuns Tunneling provides 12.0,13.0,15.0, 15.5 & 17 Single tip, Twin tip and
Center cutters with replaceable rings.
Tool Selection
Lovsuns Tunneling Canada Ltd.
Tool Selection
Rippers
Used in Soft Ground
Three Styles for different grounds (Clay, Weak Rock and Abrasive soil)
Main Excavation tool for EPB
Pressurized Oil Circuit
Lovsuns Tunneling Canada Ltd.
EPB Sensors
Additional EPB Cells
on top of Forward Shell
6 No. EPB Cells Inside
Cuttinghead Chamber
2 No. EPB Cells Inside
Screw Conveyors
Lovsuns Tunneling Canada Ltd.
GROUND CONDITIONINGWhen a ground type does not have the ideal characteristics of fluidity
and plasticity, ground conditioning can be used to modified &
improve its ability to transmit the confinement pressure.
Lovsuns Tunneling Canada Ltd.
GROUND CONDITIONING SYSTEM
Lovsuns Tunneling Canada Ltd.
Probe Drill or Polarization Ground Detection
Technique
Lovsuns Tunneling Canada Ltd.
Probe Drill or Polarization Ground Detection
Technique
Lovsuns Tunneling Canada Ltd.
Emergency Inflatable Seal
Lovsuns Tunneling Canada Ltd.
TBM DATA LOGGING
Web Edition
Windows
Server
(SQL)
Tunnel TBMSurface (Site Location)
Tunnel Media
LOVAT Supplied Hardware LOVAT Supplied HardwareHMI / Operators Interface
PLC / Data Acquisition Module
Firewall
InterNet
Remote (Off Site)
Site LAN
(Local Area Network for TBM)
Remote (Off Site)
Hosting of Data
Optional End User Supplied Hardware
Remote Client Connection(s) Remote Client Connection(s)
Hosting of Data
Note:
The EtherNet within the TBM, wireless and plug in both can
facilitate the connections of PCs/Laptops to support the hosting of
data.
LAN Edition
Windows
Server
(SQL)
Tunnel TBMSurface (Site Location)
Tunnel Media
LOVAT Supplied Hardware LOVAT Supplied HardwareHMI / Operators Interface
PLC / Data Acquisition Module
Remote (Off Site)
Site LAN
(Local Area Network for TBM)
Remote (Off Site)
Hosting of Data
Optional End User Supplied Hardware
Note:
The EtherNet within the TBM, wireless and plug in both can
facilitate the connections of PCs/Laptops to support the hosting of
data.
Generic
Workstation
Notes:
1. This package can operate standalone, as delivered
2. Connection of Client Workstations rely on the infrastructure provided by the client.
System Parameters
Cutterhead Speed, Torque, Direction, Hours, Flood Door Opening
Articulation Extension, Cylinder Pressure, Total Thrust, Center of Thrust/Offset
Propulsion Extension, Cylinder Pressure, Total Thrust, Center of Thrust/Offset
Main Drive Main Bearing Lube Flow, Sealing Systems Flow and Pressures
Forward Shell Chamber Earth Pressures
Screw
Conveyor
Speed, Torque, Earth Pressures, Guillotine Gate
Position
Trailing Belt
Conveyor
Excavation Rate, Excavated Material Totalizer
Ground
Conditioning
System Output Totals, Injection Pressures and
Flow Rates
Grout System Injection Pressures and Accumulated Volumes, Rate
Environmental Methane and Toxic Gases
Hydraulic
Systems
Oil Temperatures, System Pressures
Electrical
Systems
Motor Current Loads, TBM Power Monitoring
(kVA, kW, PF, Amps and Volts)
Lovsuns Tunneling Canada Ltd.
Additional Features
Other TBM Features that can help Mitigate Risks
- Emergency Bentonite System
- Enhanced De-watering System
- Explosion Proof Design
- Internal Disassembly or Bearing Replacement Design
Lovsuns Tunneling Canada Ltd.
Equipment Delivery
TBM Delivery is often on the Projects Critical Path
Currently there are two type of Equipment Procurement Model
- Owner Procured
- Contractor Procured
Delivery Risk for TBM Supplier
- Major Component Delivery (i.e. MD Bearing, Gear boxes)
- Workshop
