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==Class 4 tanks in service on the Severn Valley==
Class 4 tanks’ route availability was rated as ‘blue’, with the Severn Valley branch classified as ‘dotted blue’ from [[Bewdley]] to [[Buildwas]].<ref>[http://www.michaelclemensrailways.co.uk/?atk=634 ‘Locomotive Route Availability’, Michael Clemens’ Railways] (Retrieved 30 March 2017)</ref> This restricted their speed to 25mph, and so limited their use.
===Class 4 tanks allocated to Shrewsbury (89A) to September 1963===
Several Class 4 tanks were allocated to [[Shrewsbury|Shrewsbury 89A]] from mid-1962 onwards, including a few displaced from the London, Tilbury and Southend line by electrification.<ref>[http://www.brdatabase.info/locoqry.php?action=class&id=726401&type=S&page=alloc 80000 page, BRDatabase] (Retrieved 23 April 2017)</ref>
{| class="wikitable sortable mw-collapsible"
! Locomotive !! data-sort-type="date" | Dates !! Notes
|-
| 80078 || data-sort-value="21/07/1962" | July 1962 to February 1963 || Locomotive preserved
|-
| 80096 || data-sort-value="21/07/1962" | July 1962 to November 1962 ||
|-
| 80100 || data-sort-value="21/07/1962" | July 1962 to July 1965 || Locomotive preserved
|-
| 80101 || data-sort-value="21/07/1962" | July 1962 to September 1962 ||
|-
| 80135 || data-sort-value="21/07/1962" | July 1962 to February 1963 || Locomotive preserved
|-
| 80136 || data-sort-value="21/07/1962" | July 1962 to February 1963 || Locomotive preserved and has visited the SVR in preservation
|-
| 80098 || data-sort-value="8/09/1962" | September 1962 to November 1962 || Locomotive preserved and has visited the SVR in preservation
|-
| 80105 || data-sort-value="8/09/1962" | September 1962 to October 1962 || Locomotive preserved
|-
| 80131 || data-sort-value="8/09/1962" | September 1962 to February 1963 ||
|-
| 80070 || data-sort-value="15/12/1962" | December 1962 to February 1963 ||
|-
| 80102 || data-sort-value="15/12/1962" | December 1962 to June 1964 ||
|-
| 80132 || data-sort-value="15/12/1962" | December 1962 to February 1963 ||
|-
| 80070 || data-sort-value="09/03/1963" | March 1963 to May 1965 ||
|-
|}
They remained until the end of passenger working, especially north of [[Bridgnorth]].<ref>[[Bibliography#Books|D.J. Smith (1968)]]</ref><ref name="Mag97">[[Bibliography#Books|Magner (1997)]]</ref> It appears they featured much less regularly than the BR Standard 3MT 82000 tanks and LMR Ivatt 2MT 41000 tanks also in use from Shrewsbury at that time.
===Photographs of use in service on the Severn Valley===
There is little photographic evidence of their use on the Severn Valley, with the following identified:
*80070 on the daily Shrewsbury to Kidderminster pick-up freight at [[Northwood Halt|Northwood]] on 29 May 1963.<ref>Bewdley Station waiting room</ref>
*[[BR Riddles 4MT 80072|80072]] was photographed on the line on three occasions during the very cold winter of 1962-63 (whilst allocated to Swansea East Dock, 87D). This locomotive is preserved and has visited the SVR in preservation.
*80078 at Bridgnorth in 1963 working from Shrewsbury<ref> SVR News No. 15</ref>
*80102 on the last day of service in September 1963<ref name="Mag97" />.
Link added
|pressure = 225 lb/sq in
}}80079 is a BR Standard Class 4 2-6-4T tank engine designed by R.A. Riddles. The Class 4 tank engine was derived from the ex-LMS Fairburn 2-6-4T, and was used mainly on commuter and outer suburban services. A total of 155 were built, of which 15 have survived into preservation.
==80079 in service==
80079 was built in 1954 at BR’s Brighton works and entered service at Plaistow in March of that year, before moving to Tilbury a month later.<ref name="BRDatabase">[http://www.brdatabase.info/locoqry.php?action=locodata&type=S&id=80079&loco=80079 BRDatabase] Retrieved 29 January 2015.</ref> From there, 80079 mainly worked passenger services between London Fenchurch Street and Shoeburyness.<ref name=StockBook>SVR Stock book 9th edition</ref> While hauling a passenger train on 30 January 1958, 80079 overran signals in thick fog and was in a rear-end collision with another passenger train at Dagenham, Essex. Ten people were killed and 89 were injured.<ref>Red for Danger. Rolt, L.T.C. (1955, rev. 1966)</ref><ref>[http://www.railwaysarchive.co.uk/documents/MoT_Dagenham1958.pdf Ministry of Transport Accident report]</ref>
After repair, 80079 continued in service at Tilbury, before moving to the Croes Newydd shed, Wrexham in July 1962. The locomotive was withdrawn from there in July 1965 and taken to [[Barry Scrapyard]], arriving in January 1966.<ref name="BRDatabase" /><ref name="BarryList"> Beckett and Hardingham (2010), The Barry List 10th Edition</ref>
==80079 in preservation==
|19 Apr 1980||Black Countryman || Hereford - Manchester Victoria (+ Northwich L/E) || D/H with 5000. 80079 first main line run || [http://www.sixbellsjunction.co.uk/80s/800419_1.htm SBJ] ||56-9
|-
|20 May 1980||[[Rocket 150 ]] Rainhill || Northwich-Bold Colliery || L/S, with 35028 || ||56-9
|-
|09 Jun 1980||Rocket 150 Rainhill || Bold-Colliery-Bridgnorth || D/H + LMS coach || ||56-9
|20 Mar 1999|| || Bristol-Tytherington/Westerleigh Shuttles || Ran as scheduled || UKS ||
|-
|21 Mar 1999||Avonmouth Shuttles || BristilBristol-Avonmouth x3 || Ran as scheduled || UKS ||
|-
|02 Apr 1999||Dawlish Donkey || Exeter-Newton Abbot-Exeter x3 || || ||130-32
In December 1981 filming took place for an episode of [[List of film and TV productions filmed on the Severn Valley Railway#TV Commercials and other | ITV’s ''Game for a Laugh'']]. This featured musician and entertainer Joe Brown firing 80079, a job he previously did for BR while a fireman at Plaistow.
In early 1987 work was carried out on the boiler in an attempt to extend the 'ten year ticket' for a further three years.<ref>SVR News 83</ref> This was partially achieved, with 80079 being withdrawn due to loose/thin flue tube ends in early 1989.<ref>SVR News 92</ref> Apart from the boiler, the locomotive was considered in good condition mechanically, so when an overhaul began in 1990 the work mainly comprised new bunker platework, new pipework, reconditioned cab fittings and repairs to the tanks.<ref>SVR News 98</ref> Some attention was also required to the frame.<ref>SVR News 105</ref> In spring 1991 an [[:Category:SVR fundraising lotteries|SVRA Birmingham Branch raffle]] helped raise funds for the boiler work.<ref>SVR News 98/99</ref>
80079 returned to service in May 1993, making an early appearance on the Central Wales main line before spending the summer at the Llangollen Railway.<ref>SVR News 106-107</ref> During the second ticket the locomotive was a consistent performer and in 2000 recorded 12,849 miles, the highest mileage of any SVR locomotive in any single year between 1967 and 2004. The locomotive finally succumbed to tube failure in summer 2002, shortly before the 'ten year certificate' expiry date.<ref>SVR News 140</ref>
|}
After cosmetic restoration at Bridgnorth, 80079 was temporarily placed on display at the [[National Railway Museum | NRM Shildon ]] in March 2005.<ref>SVR News 150</ref>. It was then one of the first batch of locomotives to be displayed in [[The Engine House]] at [[Severn Valley Railway Timeline 2000-2009#2008 | opening in 2008]]. {{As of|20182021}}, it remains on display there. 80079 is owned by The [[Passenger Tank Fund]].
==Reported sale==
*[[Steam Locomotives visiting the SVR for galas]]
*[[Steam Locomotives hired by the SVR]]
*[[Locomotives used on the Severn Valley Branch in commercial service]] for a description of the Class's use on the Severn Valley branch
==References==
[[Category:Featured articles]]
[[Category:SVR fundraising lotteries]]
