What is this train parked up near Rutherglen?

[Peter0124]

I can see that a GBRf 66 loco is coupled to something in Bridgeton Yard, Rutherglen.

I believe it'll also work this service tomorrow:

Realtime Trains | 6X69 2344 Bridgeton Yard to Helensburgh Central | 27/03/2023

Real-time train running information for 6X69 2344 departure from Bridgeton Yard to Helensburgh Central on 27/03/2023. From Realtime Trains, an independent source of train running info for Great Britain.

www.realtimetrains.co.uk

Could anyone tell me what that yellow train is and what it's purpose is? Thanks

 

[chuff chuff]

Saw that lying in Dundee yard the other week,no idea what it is/does though.

 

[FrodshamJnct]

It's a high-speed milling unit:

First high-speed milling train bolsters capacity - Network Rail

A high-speed milling train took to our railway for the first time this week, providing quadruple the capacity to treat...

www.networkrail.co.uk

The HSM-R-B has two milling heads per rail, per train, and is considerably larger than road-rail vehicles. It will be run as a duplex unit, providing capacity for four milling heads per rail. This means it can treat four times the amount of rail a road-rail vehicle could in one night. Its high speed refers to the amount it can mill – about 1.5km an hour.

 

[Mcr Warrior]

It's a high-speed milling unit:

Is that one of those Network Rail rail trains that "renews" track by grinding away the damaged top layer of steel on the rail.

(Presume that doesn't result in the track being unduly worn down in certain locations?!)

How many such units are there on the GB network? Just the one still, or maybe more than that now? Noted that the Network Rail press release linked to by both @XAM2175 and @FrodshamJnct is almost 5 years old.

 

[Ediswan]

Is that one of those Network Rail rail trains that "renews" track by grinding away the damaged top layer of steel on the rail.

If I read correctly, it does the same job as a grinder, but removes the bulk of the material using milling cutters, with grinding only used for the final polish.

 

[Peter0124]

Ahh I see, so does it also act as a Rail Grinder then, or are they different?

 

[snowball]

Ahh I see, so does it also act as a Rail Grinder then, or are they different?

I seem to remember an article in Rail magazine within the last year or so, explaining the difference between milling and grinding.

I think maybe milling is more drastic than grinding. Maybe you grind at intervals, and after a few rounds of grinding you need a round of milling, or something like that?

 

[66701GBRF]

For anyone interested it has to be towed to and from site as it doesn‘t have the required safety systems like AWS and TPWS. Once on site it’s self propelled. Quite resource intensive as it requires 2 FOC locos, 2 FOC drivers and a FOC shunter in addition to the milling staff.

 

[stuving]

Is that one of those Network Rail rail trains that "renews" track by grinding away the damaged top layer of steel on the rail.

(Presume that doesn't result in the track being unduly worn down in certain locations?!)

How many such units are there on the GB network? Just the one still, or maybe more than that now? Noted that the Network Rail press release linked to by both @XAM2175 and @FrodshamJnct is almost 5 years old.

At the end of that press release it says:

Network Rail will use the machine until its new, owned milling train joins the Supply Chain Operations stable. This is in the design stage and will be made by Linsinger, due to join Network Rail’s fleet in 2020 or 2021.

The arrival of the first Linsinger one was reported in this thread. If that new machine (there may be a second one too) is now in use, perhaps the parked one is going to be returned.