Tunnelling Projects

Integrated Safety Systems

An integrated eco-system which provided complete package solutions that deliver advanced safety capability to protect underground personnel, manage workplace hazards exposure, and provide total operational visibility for all stakeholders.

Integrated Risk Control Management

Connect critical site systems. Understand the complete operating condition. Respond sooner.

Underground operations depend on people, vehicles, ventilation, environmental monitoring, access systems and safety infrastructure working together. iottag brings these systems into one connected operational environment combining real-time location, sensor and site-system data to help teams identify changing conditions, coordinate controls and reduce risk across the operation.

The Solution

Understand airborne contaminant levels in the context of what is actually happening underground—not simply as a reading from an environmental sensor. This is particularly relevant to diesel particulate matter (DPM), respirable dust and other contaminants associated with tunnelling activities. Australian tunnelling guidance identifies diesel emissions and airborne contaminants as important underground hazards and enforces monitoring, ventilation and traffic controls.

How It Works

Atlas combines fixed and mobile dust/DPM monitoring with personnel location, vehicle activity and ventilation data. When concentrations increase, teams can see where the issue is occurring, which personnel may be exposed, what vehicle activity may be contributing and whether ventilation conditions are adequate.

This creates the operational context to respond—adjust ventilation, investigate contributing plant or activity, restrict exposure, or relocate personnel where required.

Core Benefit

Reduce personnel exposure by identifying where airborne contaminants are building, who may be exposed and what operational conditions are contributing.

The Solution

Gas readings become significantly more valuable when connected with personnel location and the systems capable of controlling or responding to the hazard. Air contamination, oxygen depletion, fire and explosion are recognised tunnelling hazards.

How It Works

Atlas integrates fixed or personal gas detection, personnel tracking, ventilation systems and fire alarm events into a common operational picture.

When hazardous conditions are detected, teams can immediately understand:

What has been detected → Where it is occurring → Who is potentially exposed → What ventilation is operating → Whether associated fire or safety alarms have activated.

Alerts and workflows can then support the appropriate site response.

Core Benefit

Minimise the risk of personnel entering or remaining within a hazardous atmosphere by connecting environmental detection directly with workforce location and operational controls.

The Solution

Ventilation requirements change as personnel, vehicles and work activities move through an underground operation. Rather than treating ventilation as a static system, iottag provides the operational inputs needed to understand demand dynamically.

How It Works

Atlas combines personnel location, vehicle activity and ventilation-system data to provide a live view of occupancy and activity across ventilation zones.

This can support ventilation-on-demand strategies where airflow requirements respond to actual personnel and equipment activity rather than operating every area at maximum demand continuously. Mine ventilation-on-demand systems commonly use personnel and vehicle location/status as inputs to airflow control, with reducing ventilation costs among their key objectives.

Core Benefit

Maximise ventilation efficiency while maintaining required underground conditions—helping reduce unnecessary fan operation, energy consumption and operating cost.

The Solution

During an underground emergency, the priority changes immediately from normal operations to accountability and coordinated evacuation. Effective emergency planning for tunnelling includes evacuation procedures and effective communication, while fire, unsafe atmospheres and ventilation failure can all trigger evacuation.

How It Works

Atlas connects real-time personnel location with radio/communications systems, fire alarms and access-control data.

When an evacuation is initiated, control teams gain a live picture of:

  • Who is underground.
  • Their last/current known location.
  • Who is moving toward designated safe areas.
  • Who has reached muster.
  • Who remains unaccounted for.

iottag already supports real-time personnel tracking and movement to designated muster points, providing a strong foundation for this integrated workflow.

Core Benefit

Improve evacuation performance by giving emergency teams real-time personnel accountability and a clearer picture of evacuation progress.

The Solution

Underground compliance involves far more than checking whether a worker has completed an induction. Personnel, vehicles, plant and equipment can each carry different requirements involving access permissions, permits, competency, inspections and maintenance.

The challenge is ensuring all of those requirements remain aligned as the operation changes.

How It Works

Atlas connects personnel, vehicles, assets, access control, permits and service/maintenance records into a common compliance layer.

Before a person, vehicle or asset enters a controlled area, the system can verify the relevant conditions—for example:

Person authorised? → Permit valid? → Vehicle compliant? → Asset inspection current? → Maintenance current? → Access permitted.

Exceptions can be identified before they become operational issues, while records provide greater visibility for supervisors, safety teams and audits. iottag already supports access permissions, certifications, compliance tracking, maintenance records and automated personnel check-in/out.

Core Benefit

Maximise site compliance by continuously connecting the requirements of personnel, vehicles, assets and controlled work areas—not managing each in isolation.

The Solution

A fire underground can quickly become a multi-system event involving people, vehicles, equipment, atmospheric conditions, ventilation and evacuation.

An alarm tells you that something has happened.

Integrated intelligence helps teams understand what is happening around it.

How It Works

Atlas brings together fire alarm events, personnel and vehicle location, asset information, gas/environmental sensors and CCTV integrations to create a live operational picture around the event.

When a fire alarm activates, teams can rapidly establish:

Where is the alarm? → Who is nearby? → What vehicles/assets are present? → Are gas or environmental conditions changing? → What can CCTV confirm? → Who needs to be evacuated?

This is particularly relevant underground, where fire, explosion and unsafe atmospheres are recognised major hazards and confirmed or suspected underground fires are identified in Australian tunnelling guidance as evacuation triggers.

Core Benefit

Minimise fire risk and improve emergency response by connecting detection with the people, assets and environmental conditions surrounding the event.

CCTV
Fire Alert
DPM
Air Quality + Gasses
Radios
Wifi
Emergency Lighting
Onsite Alarm
Access Control
Ventilation on Demand
Real Time Location Tracking (RTLS)
Integrated communication node enclosure with its door open, showing the controller and wiring inside

Integrated
Communication Node

1. Introduction & Project Scope

The Integrated Communication Station (ICS) serves as the centralized supervisory control and data acquisition system for facility management, environmental monitoring, security, and emergency operations. This system unifies life safety, physical security, critical communication networks, and automated environmental controls into a single glass pane interface to reduce response times and optimize operational efficiency.

2. System Architecture & Peripheral Subsystems

The ICS will interface with and manage eleven (11) distinct peripheral core subsystems via dedicated APIs, network protocols, or dry contact relays.

  • Air Quality & Gas Detection: Continual polling of sensor arrays for toxic, explosive, or asphyxiant gases. Trigger thresholds must be configured for low-level alerts and high-level critical alarms.
  • Ventilation on Demand (VoD): Dynamically regulates variable speed fans and dampers based on telemetry received from the Air Quality & Gas Detection subsystem or operational schedules to reduce energy consumption.
  • Diesel Particulate Matter (DPM) Monitoring: Tracks ambient particulate matter concentrations to ensure compliance with occupational health and safety standards.
  • Fire Alert Integration: Direct linkage to the facility’s Main Fire Alarm Control Panel (FACP). On fire signal reception, the ICS must automatically initiate emergency state sequences.
  • On-Site Alarms & Signals: Activation controls for physical horns, sirens, and visual strobe beacons distributed throughout the facility.
  • Emergency Lighting: Automatic activation and status tracking of auxiliary backup illumination arrays upon loss of primary utility grid power or during an active emergency state.
  • Two-Way Radio Networks: Integration with localized radio base stations (UHF/VHF/Digital) allowing text alerts, dispatch logs, or panic triggers to bridge into the central system.
  • Wireless Network (Wi-Fi): Status tracking and network health diagnostics of the facility-wide wireless access points.
  • Real-Time Location System (RTLS): Active tracking of personnel and critical assets using RFID, BLE, or UWB badges to maintain an active muster log for emergency operations.

3. Core Functional Requirements

Centralized Alarm Management: The ICS must aggregate and prioritize incoming alerts using a color-coded threat matrix (Critical, Warning, Informational).

Automated Logic Engine (Interlocking): The system must allow logic routing across subsystems (e.g., If Gas Detection > X ppm, Then ramp Ventilation to 100%, trigger On-Site Strobes, and cue closest CCTV stream).

Audit Logging: All system states, overrides, user actions, and sensor data points must be securely written to a tamper-evident database file for post-incident review.

Supporting Workforce Safety

Workforce visibility is critical within underground environments. The platform supports:

checkWho is on site

checkHow conditions are changing

checkWhere activity is occurring

checkWhere attention may be required

Personnel Accountability

Emergency Response

Evacuation Management

Environmental Awareness

Vehicle Interactions

Restricted Area Controls

Fatal Risk Intelligence

By providing a shared operational understanding, organisations can improve situational awareness and support safer operations.

Supporting Project Delivery

Beyond safety, tunnelling projects require efficient coordination across multiple work fronts.

The platform helps organisations understand:

Workforce deployment
Vehicle activity
Operational constraints
Equipment utilisation
Project progress
Emerging risks

Supporting more informed operational decision-making throughout project delivery.

Crews, a loader and a concrete truck working together along an excavated tunnel heading

Visibility For All Project Stakeholders

Government owners require confidence that projects are being delivered safely and effectively. Operational Analytics & Benchmarking helps provide a consistent operational picture across every level of the project hierarchy.

Subcontractor crew working inside a tunnel

Subcontractors

Subcontractors require operational visibility

Main contractor team in safety gear reviewing works

Main Contractor / JV

Main contractors require project oversight

Project owners meeting around a boardroom table

Government Owner

Joint ventures require project assurance

Infrastructure

Recent Projects

Aerial view of the M6 Motorway interchange and tunnel portal surrounded by parkland

M6 Motorway Stage 1

Australia, Sydney

Two workers in high-visibility orange inspecting a large excavated tunnel cavern

Sydney Metro | Eastern Tunnelling Package

Australia, Sydney

Tunnel boring machine shield at a launch shaft beside gantry cranes

Sydney Metro | Western Sydney Airport

Australia, Sydney

Project crew assembled in front of a tunnel boring machine cutterhead

North East Link

Australia, Victoria

Aerial view of an open-cut station box excavation on a rural construction site

Suburban Rail Loop Package C

Australia, Victoria

Workers walking through a completed segment-lined rail tunnel

Cross Island Line CR105

Singapore

Operational Intelligence For Tunnelling

Create a shared operational understanding across your project.