Depot Protection Systems are installed in train maintenance facilities to control the safe movement of rail vehicles, protecting staff working in the vicinity. An analysis of the obligations of the safety functions performed by a Depot Protection System in a maintenance facility has concluded that a SIL 2 target level is required.
A system can only be deemed as SIL compliant system if assessed as a whole, rather than relying on compliant COTS (commercial off-the shelf) components in a system using software of unknown pedigree (SOUP). Zonegreen’s DPPS™ has been assessed to meet the hardware and software requirements of SIL 2. DPPS™ uses standardised software and hardware across all installations, resulting in all DPPS™ installations meeting SIL 2.
Zonegreen Smart Depot Personnel Protection System (DPPS™) is installed in maintenance depots to protect personnel who are working in areas such as maintenance sheds or sidings roads, from unauthorised train movements. Each installation is based upon the same core software and hardware, with bespoke configurations that are developed for each customer’s site requirements. The prohibition of train movement is primarily achieved through the deployment of derailers that are typically positioned outside each road at the entrance of a building. The derailers are linked to shunt signals that control trains movements to, from and within the road.
They are also connected to audible and visual alarms that provide an alert to any train movements, authorised or not. Only personnel holding a higher authorisation RFID token (such as depot supervisor, team leader) are allowed to authorise a train movement through the DPPS™ system. Movement of a controlled vehicle is achieved through a controlled logic sequence of procedures by the DPPS™: interlock checking, activating audio visual warning system, lowering derailer and setting inbound/outbound shunt signals.
Railway-News magazine Issue 4, 2023: Zonegreen – Pointing Injury Prevention in the Right Direction.
Railway-News magazine Issue 2, April 2023: Zonegreen – Let’s Make Depots Safer Places to Work.
Railway-News magazine Issue 3, September 2022: Zonegreen - Spearheading Improvements in Depot Safety.
According to a study carried out by the RSSB shunter safety still remains a serious concern across the board in the UK rail industrv.
Over the past two decades, rail depot infrastructure has undergone changes which have clearly madea positive impact on safety.
Railway-News magazine Issue 1, March 2022: Zonegreen - SPAD Risk in Maintenance Depots.
Railway-News magazine Issue 3, August 2021, Railtex/Infrarail: Zonegreen - Reducing the Risks in Rail Depots and Protecting Our Depot Workers.
Rail safety specialist, Zonegreen, has returned to Derby Rail Depot to expand the protection offered to those working there.
Rail safety specialist, Zonegreen, is marking a milestone in its development after signing a maintenance contract with a 50th UK depot.
Zonegreen's Depot Personnel Protection System (DPPS) has been installed at the new £70 million Gosforth Metro depot.
Zonegreen is being called upon to protect increasing numbers of staff at Hull’s upgraded Botanic Gardens depot.
Rail safety specialists Zonegreen, will be highlighting the dangers facing staff in maintenance depots at this year’s Railtex exhibition.
Zonegreen has installed warning beacons on busy walkway crossings at the Three Bridges facility to alert workers to imminent train movements.
Zonegreen has installed its flagship Depot Personnel Protection System at Govia Thameslink Railway’s (GTR) Selhurst facility in London.
Sentric Safety Group, a company that manufactures and distributes leading safety solutions, has announced that it has acquired Zonegreen.
Technology created by Zonegreen is protecting workers at a historic Portsmouth depot from the potential risks posed by manual points.
Zonegreen has equipped one of the busiest maintenance depots in the country with state-of-the-art safety technology.
Rail safety specialist Zonegreen has undertaken a complete overhaul of its Points Converter system at Bournemouth depot.
Zonegreen will be demonstrating how its technology can reduce the risks faced by depot staff at this year’s InnoTrans exhibition in Germany.
Zonegreen is enhancing the protection offered to maintenance workers across Ireland, as part of an extensive programme of depot upgrades.
Zonegreen have installed the latest version of their flagship depot protection system at one of the first facilities to ever invest in the technology.
Sheffield-based rail safety specialist, Zonegreen, will be sharing its knowledge and experience with the sector at this year’s Railtex exhibition.
Zonegreen has completed a fourth installation of its innovative Points Converter system for South Western Railway's Fratton depot in Portsmouth.
Hitachi Rail’s depot in Doncaster is improving its already excellent safety standards, courtesy of Sheffield-based experts, Zonegreen.
Rail safety specialist, Zonegreen, has completed its first installation for the rail freight sector, equipping a new logistics park in Northamptonshire.
Whilst Zonegreen may be well known as the supplier of depot protection systems, what you may not know is that they are also one of the greenest.
Rail safety specialist, Zonegreen, has completed the first in a series of planned depot enhancements for Scottish railway operator, ScotRail.
Rail safety specialists, Zonegreen, will be exhibiting their market leading depot protection system at Railtex/Infrarail next month.
Sheffield-based Zonegreen has installed its very latest rail safety technology at a depot famed for servicing steam locomotives.
Zonegreen has successfully installed its flagship Depot Personnel Protection System (DPPS) at Crown Point maintenance facility, Norwich.
Zonegreen is expanding the services it offers to Nottingham’s Eastcroft depot, following the installation of its Points Converter technology.
When we consider that the real harm numbers for depots are likely to be much higher than recorded, it is clear that changes need to be made.
Rail safety specialists, Zonegreen, have launched an innovative solar powered derailer, to bring clients environmental and economic benefits.
Zonegreen have launched the new MK III control panel for their flagship depot protection system that uses the latest contactless technology.
Employees entering Tyne and Wear Metro depots are now fully trained in personnel protection, thanks to Sheffield-based Zonegreen.
Zonegreen have installed their Depot Personnel Protection System at a new learning centre for employees entering Tyne and Wear Metro depots.
Zonegreen has reached a major milestone in its 12-year history: the 2,000th order of its depot safety equipment.
A Sydney rail depot has become the third across Australia to call on safety specialists, Zonegreen, to improve working conditions for staff.
Zonegreen is adding its New Generation Depot Personnel Protection System (DPPS) to a £20 million extension at Newton Heath, Manchester.
Zonegreen is using its latest technology to protect depot staff on the Isle of Wight from the risks associated with manual hand points.
Zonegreen is installing its Depot Personnel Protection System (DPPS) onto a new four road stabling facility being built at Ardwick depot.
Zonegreen is expanding its rail safety presence in the Republic of Ireland, after installing a new warning system at Dublin’s Fairview Depot.
Sheffield rail safety specialist, Zonegreen, is equipping Norwich’s Crown Point depot with its latest personnel protection technology.
Zonegreen has upgraded its DPPS technology at a second Siemens UK depot, as part of a major midlife overhaul programme for the operator.
The rail safety specialist, Zonegreen, installed it's DPPS technology at a second train maintenance facility in Australia.
Since 2016, safe working procedure rule breaches in Australia’s rail industry have increased by 47% making depot safety a national priority.
Zonegreen, is to supply its DPPS technology to Metro operator, Nexus’, £8.4 million training facility, being constructed in South Shields.
Sheffield-based Zonegreen is celebrating the achievements of its technical director, Christian Fletcher, expert in depot personnel protection
Rail safety specialist Zonegreen is working with Siemens to overhaul the personnel protection systems installed at its UK maintenance depots.
Zonegreen's flagship DPPS™ is guaranteeing depot safety on one of the most prominent transports projects in the Middle East.
The new Depot Personnel Protection System (DPPS) control panel which is operated via RFID cards. Zonegreen have developed a unique prop...
This year will mark the 20th anniversary of the modern depot protection system. Zonegreen’s innovative Depot Personnel Protection System...
Preview services have started on the Red Line of the Doha Metro in Qatar. Services will run weekdays from 8am to 11pm, servicing 13 stations.
Sheffield-based Zonegreen is equipping Norwich’s Crown Point rail depot with technology that will prevent accidents and provide protection...
Earth pole interlocking ensures the safety of personnel working in depots without compromising on operability. Zonegreen’s innovative solutions are...
Staff working on Qatar’s state-of-the-art driverless metro in Doha will be among the safest in the world, thanks to innovative depot safety technology from Zone...
The Sheffield-based engineers have installed an interlocking system that prevents personnel and equipment entering dangerous areas and coming into contact with ...
A state-of-the-art rail maintenance facility in Banbury, Oxfordshire, is operating smoothly and safely, thanks to Sheffield-based Zonegreen’s Depot Safety Syste...
Sheffield-based Zonegreen has secured a five-year deal with Bombardier that will safeguard workers looking after London’s new Elizabeth line trains. The depot s...
Sheffield-based rail safety specialist, Zonegreen, has recently completed the first installation of its flagship Depot Personnel Protection System (DPPS™) at a ...
Rail depot control specialist, Sheffield-based Zonegreen, is expanding its sales and marketing team to strengthen brand awareness and support the company’s grow...
Zonegreen has unveiled the new generation SMART Depot Personnel Protection System (DPPSTM), following its first complete overhaul in 15 years.
Designed to increase railway depot and workshop safety, the Zonegreen Points Converter allows the automation and remote operation of manual hand points...
Technology developed by Sheffield-based Zonegreen will be protecting the 500-strong workforce at one of Australia’s most advanced rail depots...
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