Sandite is a substance used on

railway Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in Track (rail transport), tracks. In contrast to road transport, where the ...

s in the UK,

Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Grea ...

, US, the

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

and

Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to ...

to combat leaves on the line, which can cause

train In rail transport, a train (from Old French , from Latin , "to pull, to draw") is a series of connected vehicles that run along a railway track and transport people or freight. Trains are typically pulled or pushed by locomotives (often k ...

wheels to slip and become damaged with flat spots. Sandite consists of a mixture of

sand Sand is a granular material composed of finely divided mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a soil texture, textur ...

antifreeze An antifreeze is an additive which lowers the freezing point of a water-based liquid. An antifreeze mixture is used to achieve freezing-point depression for cold environments. Common antifreezes also increase the boiling point of the liquid, al ...

and steel shot. Leaf build up on the railhead can also cause signalling issues and 'disappearing trains' on the rail control systems (because of the electrically insulating effect of the leaves, which can prevent operation of track circuits).

British Rail British Railways (BR), which from 1965 traded as British Rail, was a state-owned company that operated most of the overground rail transport in Great Britain from 1948 to 1997. It was formed from the nationalisation of the Big Four (British ra ...

conducted research, in 1976, to determine the suitability of Sandite for use as an adhesion improver.

Application

Sandite is usually applied by a special train which first clears fallen leaves from the rails using high-pressure water, then sprays the sandite onto the rail surface. To assist the staff on the Sandite train in locating the sites concerned, in

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe ...

and

Wales Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...

black on yellow lineside markers were installed: *The first sign, with three stripes gives advance warning of a Sandite application site *The second sign, with two stripes points where application should begin *The third sign, with one stripe points where application should end From 1992, lineside marker boards were installed on the Scottish Region, based on alternative white octagonal boards to denote the commencement and finish points, with no warning sign. In The Netherlands, Sandite is applied by the first passenger trains of the day, with special maintenance trains available too. Belgian Infrabel operates a dedicated train, with a diesel engine at either end.

Equipment

initially used converted diesel and electric multiple units. Successor

Network Rail Network Rail Limited is the owner (via its subsidiary Network Rail Infrastructure Limited, which was known as Railtrack plc before 2002) and infrastructure manager of most of the railway network in Great Britain. Network Rail is an "arm's leng ...

built a fleet of dedicated sandite wagons which are hauled in top and tail formation by Colas Rail and,

DB Cargo UK DB Cargo UK (formerly DB Schenker Rail UK and English, Welsh & Scottish Railway (EWS)), is a British rail freight company headquartered in Doncaster, England. The company was established in early 1995 as ''North & South Railways'', successful ...

and

Direct Rail Services Direct Rail Services (DRS) is a rail freight company in Great Britain. As of 2022, it is one of seven publicly owned railway companies in the United Kingdom, the others being NI Railways (the passenger rail operator in Northern Ireland), LNER ...

locomotives. Network Rail also uses its MPVs. As at October 2021, 67 sets were operated.Dry ice to help cut train delays caused by leaves on tracks
''

BBC News BBC News is an operational business division of the British Broadcasting Corporation (BBC) responsible for the gathering and broadcasting of news and current affairs in the UK and around the world. The department is the world's largest broad ...

'' 4 October 2021

References

https://ireland.rhomberg-sersa.com/en/leaves-on-the-rail-lines

External links

Leaf Fall Campaign, Weedfree Ltd.
Rail transport in the United Kingdom Permanent way {{UK-rail-transport-stub

Application

Equipment

See also

References

External links