From coal hopper to nuclear flask barrier wagon — meet one of Britain's most unusual freight conversions.
Britain's railways have always been good at finding new uses for old wagons.
When traffic patterns change, wagons that had once been indispensable can suddenly find themselves surplus to requirements. Sometimes they were scrapped. Sometimes they were rebuilt. And occasionally, something rather more unusual happened.
We've seen this in recent years with the HYA and HTA coal hoppers being made redundant due to the downturn in coal traffic, and conversion into the "cut down" hoppers for aggregate traffic. But, this is not a new thing for redundant coal wagons.
In 1989, a group of redundant HEA and HBA wagons found themselves with a completely different job to do.
They became RNA barrier wagons, forming part of the specialist fleet supporting nuclear flask traffic to and from Sellafield.
And we're delighted to bring this fascinating and often overlooked wagon type to the Accurascale range.
A very different job
By the late 1980s, British Rail's Coal Sector network had a requirement for barrier vehicles to be used in connection with nuclear flask traffic serving Sellafield.
The wagons needed to perform a very specific role: acting as barrier vehicles within trains conveying nuclear flasks, providing the necessary separation between the flask vehicles and the locomotives or other traffic.
Rather than build an entirely new wagon, British Rail looked towards an existing and readily available source of vehicles.
A total of 37 wagons were selected.
Initially, these vehicles were simply taken out of normal service and recoded RNA, preventing them from being used as ordinary coal wagons.
Some were also repainted into the new Coal Sector livery.
But this was only the beginning.
From hopper to barrier
Of the 37 vehicles selected, 31 were subsequently converted by Carlisle Currock.
The conversion was relatively radical.
The original hopper body was removed, with the body cut away and the floor plated over to create a completely flat deck.
The result was Diagram RN001A — the RNA barrier wagon.
Two distinct groups of donor vehicles were used during the conversion programme, meaning that variations could be found within the fleet depending on the vehicle's origins.
It was a wonderfully practical British Rail solution: take surplus rolling stock, remove the bits that were no longer required and turn it into something useful for a completely different traffic flow.
Coal Sector colours
The RNA fleet was closely associated with the Coal Sector operation serving Sellafield and consequently appeared in the distinctive Coal Sector livery.
As the railway industry moved through the period of privatisation, the wagons subsequently received further changes in appearance.
Some received Transrail branding, while others carried TLF-W markings.
At least one example is also known to have received full EWS livery, providing modellers with a particularly interesting opportunity to recreate the changing appearance of the fleet through the 1990s.
For a wagon with such a small fleet, there was surprisingly more variety than you might expect.
A wagon with a second life
The RNA is a particularly good example of the ingenuity of British Rail's wagon engineers and operating departments.
A vehicle that had originally been designed for one purpose was suddenly required to perform another.
Rather than simply disappear from the network, it was given a new life.
The hopper body was sacrificed, the chassis was adapted and the wagon was transformed into a specialist barrier vehicle.
It's an unlikely story — but that's exactly what makes it so interesting.
Bringing the RNA to OO gauge
With our Powering Britain range, we're not just interested in the famous wagons that appeared by the thousands.
We're interested in the vehicles that tell the more unusual stories of Britain's railway too.
The RNA barrier wagon certainly falls into that category.
With its distinctive flat-plated body, specialist role and relatively tiny fleet, it offers something very different from the conventional freight wagons found elsewhere in the range.
Whether you're recreating the Coal Sector workings of the early 1990s, the changing liveries of the privatisation era, or simply want to add one of Britain's more unusual freight vehicles to your layout, the RNA provides a fascinating piece of railway history.
Building on the platform of our all new HBA and HEA hopper wagons, our RNAs include a fully diecast chassis and an accurately crafted deck along with brake rigging and a wealth of separate underframe rigging to faithfully replicate these long needed wagons in model form.
Every model features:
- Diecast metal chassis for excellent weight
- Brass pinpoint bearings for exceptionally smooth running
- Flexible NEM coupling pockets
- Sprung metal buffers
- Scale coupling pack included
- Etched stainless steel brake discs
- Finely reproduced underframe and brake equipment
- Prototype-specific suspension, axleboxes and pipework
- Era-correct tooling and decoration variations
Due with the rest of the HBA/HEA run in Q2 2027, each twin pack of barrier wagons is priced at £49.98 and available to pre-order now exclusively from our website via the link below:
