QUS
Diesel traction still accounts for a significant share of passenger and freight movement across the UK rail network. For train operating companies, rolling stock companies and rail maintenance contractors managing SCR-equipped diesel multiple units and locomotives, a reliable supply of high-quality AdBlue is an operational necessity, not a secondary consideration.
QUS supplies ISO 22241 compliant AdBlue to depots and rail operations nationwide, with bulk delivery available to single and multi-depot operations. If your fleet of diesel units requires a dependable, certified supply partner, this page sets out what we offer and how we work with rail operators.
SCR technology has been adopted by a number of major rolling stock manufacturers, including Siemens, Alstom and Bombardier, as the primary means of reducing nitrogen oxide (NOx) emissions from diesel traction. The system works by injecting AdBlue into the exhaust stream, where it reacts with NOx to produce nitrogen and water vapour, significantly reducing harmful emissions at the exhaust outlet.
For depot managers and fleet engineers, the practical consequence is straightforward. Without a consistent supply of correctly certified AdBlue, SCR-equipped units cannot operate within their emissions parameters. In a road vehicle context, a unit running low on AdBlue will enter a limp mode or non-start condition. The consequences in a rail setting, where unit availability is tied directly to timetable delivery, are more significant. A diesel unit out of service due to an AdBlue issue has downstream effects on operator performance and, under the current public ownership framework, on the wider network.
The answer is a supply arrangement that removes this as a variable: regular scheduled deliveries of certified product, to the depots where it is needed, in quantities matched to actual consumption.
Not all AdBlue is equivalent. The ISO 22241 standard defines the required urea concentration (32.5%), purity thresholds and handling specifications for AdBlue used in SCR systems. Product that falls outside those parameters can cause crystallisation, sensor failure and damage to SCR components, resulting in maintenance costs that significantly outweigh any saving made on purchase price.
All AdBlue supplied by QUS is manufactured to ISO 22241 standards. As a UK manufacturer, we maintain clear quality control across our production and supply chain, which means depot managers can be confident in the consistency of what they are receiving. When an SCR fault does occur on a unit, being able to rule out product quality as a contributing factor simplifies diagnosis and avoids unnecessary disputes with maintenance contractors.
For operators procuring AdBlue through a formal tender process, our product documentation and certification is available on request.
Rail depot AdBlue supply is not the same as topping up a road vehicle fleet. Volumes are higher, delivery schedules need to be predictable, and access requirements vary considerably between depot sites. Our bulk delivery service is designed to accommodate exactly this kind of operation.
We deliver AdBlue directly into depot storage tanks using road tankers, with delivery metered so you pay only for the volume received. For depots that do not yet have a fixed storage tank in place, we can supply AdBlue storage tanks on terms to suit your requirements, including bunded options where site regulations demand it.
Where a depot requires smaller volume supply or a more flexible format, 1000 litre IBCs are available, along with a range of dispensing equipment including electric pumps, manual rotary pumps and gravity feed pipework.
Train operators with rolling stock stabled across multiple depot locations face the same procurement challenge as any multi-site fleet operation: how to maintain consistent product quality and reliable delivery across locations that may be spread across different regions of the country.
QUS delivers AdBlue nationwide from our base in Derbyshire, and we are able to supply multiple depot locations under a single supplier relationship. This simplifies procurement administration, consolidates invoicing, and means that product quality is consistent across every site, regardless of location. It also gives depot managers a single point of contact for delivery scheduling, emergency supply and any technical queries.
We supply AdBlue to rail depots in the following formats, depending on site storage infrastructure and consumption volume:
• Bulk tanker delivery pumped directly into your depot storage tank, metered and invoiced on actual volume delivered
• 1000 litre IBCs suitable for depots with lower consumption or without fixed tank infrastructure
• 210 litre drums for smaller volume requirements or secondary locations
• AdBlue storage tanks available to suit your depot footprint and volume requirements
• Dispensing equipment including electric pumps, manual rotary pumps, bunded IBC stands and gravity feed systems
If you are a train operator, rolling stock company or rail maintenance contractor looking to secure a reliable, certified AdBlue supply for one or more depot locations, we would be happy to discuss your requirements and provide a quote.
Contact the QUS team on 01663 734621 or email enquiries@qualityureasolutions.com to talk through your depot volumes, delivery schedule and storage setup.
