Drill and Blast Chamber – TunnelSAFE Standard Design
Drill and Blast Chambers are designed for drill and blast tunnelling operations. The Standard Design refuge chamber offers optimum safety features, functionality and performance, and can be easily positioned and repositioned; providing an ongoing, adaptable safe refuge solution for the life of the tunnelling project.
The TunnelSAFE Standard Design (SD) Refuge Chamber offers an ideal solution for projects involving feeder tunnels and single-entry development headings, including sub-surface railway stations, hydro-power stations and other complex tunnel networks.
MineARC’s TunnelSAFE Standard Design Refuge Chamber is highly customisable to suit any tunnelling project and can be built to comply with European Standard (EN 16191:2014) Safety Requirements for Tunnelling Machinery, the British Standard (BS 6164:2011) Code of Practice for Health and Safety in Tunnelling in the Construction Industry, and the ITA’s “Guidelines for the Provision of Refuge Chambers Under Construction”.
The TunnelSAFE Standard Design Refuge Chamber features a generous shell size at 2.25m wide, while still providing ample internal space for a range of occupancies – from 08 to 20 people. Its dimensions and rated occupancy can be custom-engineered to project specifications, without compromising on safety or performance.
Drill and Blast Chamber – Virtual Tour
Drill and Blast Chamber – Front ViewThe ‘face’ of the TunnelSAFE Standard Design is designed primarily for easy identification and quick access during an emergency. The strobe lighting, warning siren and reflective signage alert passers-by to the chamber’s location, whilst the rotating door handles provide simple, straight forward access to the safety of the interior.
Drill and Blast Chamber – Interior ViewInside a TunnelSAFE Standard Design Refuge Chamber, a number of vital life-support systems combine to create a safe, ongoing environment for occupants. Systems include; primary and secondary air (oxygen) supplies, air conditioning systems, positive pressure systems, electrical systems, gas detection and a chemical scrubbing system. The TunnelSAFE Standard Design uses active chemicals and MineARC’s ELV (extra-low-voltage) Scrubbing System to ‘scrub’ the build up of harmful CO2 (carbon dioxide) and CO (carbon monoxide) from the air inside the refuge chamber.
Drill and Blast Chamber – Rear ViewA secure cabinet at the rear of the TunnelSAFE Standard Design houses the refuge chamber’s UPS battery back up (Uninterruptible Power Supply). The UPS is a fail-safe system that can power the refuge chamber’s internal life support systems for a minimum of 36hrs, should mine power become cut-off. Also at the rear of the chamber is the Compressed Air Management System (CAMS), which allows regulated compressed air into the refuge chamber when the pressure inside drops below 200Pa. This process optimises mine air usage and guarantees against over-pressurisation of the refuge chamber. CAMS’ gas toxicity monitor automatically diverts compressed air if oxygen levels in the airline fall below a set level (18% oxygen in free air), signifying air contamination. Additionally, the incorporated flood protection valve automatically shuts down compressed air to avoid catastrophic and costly chamber damage in the event of water ingress.
|Name||Capacity *||ITA/BS EN Compliance **||Aura-FX Gas monitoring||CAMS||Gantry||Mobile||Portable||24hrs Battery Backup|
- * Capacity Every refuge chamber is built with a certain rated occupancy in mind. The life support systems are designed to safely house this number of people for the designated duration.
- ** ITA/BS EN Compliance MineARC’s TunnelSAFE Refuge Chambers can be built to comply with British Standard (BS EN 16191:2014) Safety Requirements for Tunnelling Machinery and the ITA’s “Guidelines for the Provision of Refuge Chambers Under Construction.
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