Hi-tech air purifying totem trials planned for Birmingham New Street: Photomontage of Pluvo air cleaning unit on Birmingham New Street platform

Thursday 3 Aug 2023

Hi-tech air purifying totem trials planned for Birmingham New Street

Region & Route:
North West & Central
| North West & Central: Central

Pioneering new devices will be trialled at Birmingham New Street station to see how much they improve air quality for passengers on platforms.

Network Rail will install two upright ‘totems’ later this year to filter pollutants and viruses from the air on platforms 10 and 11.

The purification systems work by taking in air at the bottom before it’s passed through a series of filters with clean air then released at head height.

It’s hoped this will make platforms more pleasant for passengers by reducing the impact from train exhaust fumes.

A recent trial of similar units, made by a company called Pluvo, saw promising improvements on a busy street in London*.

It’s hoped the trials will complement the major multi-million-pound investment into the station’s overhead ventilation system four years ago**.

Patrick Power, Network Rail Central route head of stations, said: “We want Birmingham New Street to be a pleasant environment for passengers and we’ve invested millions of pounds over the years to try to improve the air quality.

“As one of the busiest stations in the country, with diesel and electric trains coming or going every 37 seconds on average, we know the air quality at platform level could be better. These new units show real promise to tackle that and if successful we’d look to roll them out right across the station in future.”

Matteo Maccario, CEO and founder of Pluvo, said: “We’re delighted to partner with Network Rail to test and bring our clean air solutions to the railway environment. At Pluvo our mission is to create clean air spaces for people to live, work and play in. We believe this partnership with a global rail leader such as Network Rail will aid us in that mission.

"Birmingham New Street, with its unique air quality challenges, is an ideal trial location for our Pluvo Column solution. Network Rail’s managed stations have huge passenger footfall in the largest cities in the UK and we hope to help them create healthier and cleaner spaces, thus improving the overall passenger experience.”

The central sections of the units will feature large visual displays which will show passengers how they work and what else Network Rail is doing to provide a cleaner and greener railway.

If the trial on platforms 10 and 11 is successful, the plan is to install more of the devices along other platforms at the station in the future.

Notes to Editors

*A recent trial of similar outdoor units in London saw a reduction of up to 67% in particulate matter, and 22% in Nitrous Oxides.

**Birmingham New Street uses the latest technology to optimise its ventilation system to remove diesel pollutants from trains. More than 100 sensors and 98 jet fans have been upgraded since 2018 in a £1m investment, leading to reductions of nitrous oxide of up to 45%.

The legal regulations Network Rail meets

Network Rail has a legal duty to comply within the Workplace Exposure Limits (WELs) as defined under COSHH (The Control of Substances Hazardous to Health Regulations 2002 (as amended) regulations as far as reasonably practicable when trains are within its stations.  

The 2008 Ambient Air Quality Directive (2008/50/EC) sets legally binding limits and target values for concentrations of major air pollutants. It applies to outdoor ambient air and not within enclosed stations such as New Street. The different limits we are governed by are;

·       Long Term NO2 Limit: 8-hour Long term Exposure Limit (LTEL) 0.5 ppm (955 μg/m3)

·       NO: 8-hour LTEL 2.0 ppm (2,500 μg/m3)

·       Short Term NO2: 15 minute STEL 1.0 ppm (1,910 μg/m3)

One of the requirements under COSHH is to control Diesel Exhaust Emissions at source by local exhaust ventilation, and general ventilation.

Birmingham New Street's industry leading ventilation system

The enhancements carried out on New Street Station’s ventilation extract system in 2019 has been widely seen as best practice in tackling and monitoring DEEE with an array of fixed CO2, NO and NO2 monitors linked to 98 ‘jet’ fans of 8 speed functions that adjust depending upon concentration of the gases.

The system is monitored centrally with alarm functions for exceedance of gases via the Building Management System (BMS).

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About Network Rail

We own, operate and develop Britain's railway infrastructure; that's 20,000 miles of track, 30,000 bridges, tunnels and viaducts and the thousands of signals, level crossings and stations. We run 20 of the UK's largest stations while all the others, over 2,500, are run by the country's train operating companies.

Usually, there are almost five million journeys made in the UK and over 600 freight trains run on the network. People depend on Britain's railway for their daily commute, to visit friends and loved ones and to get them home safe every day. Our role is to deliver a safe and reliable railway, so we carefully manage and deliver thousands of projects every year that form part of the multi-billion pound Railway Upgrade Plan, to grow and expand the nation's railway network to respond to the tremendous growth and demand the railway has experienced - a doubling of passenger journeys over the past 20 years.

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