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|image = No.D182, BR no.46045 (Class 46) (6101025560) (2)D182_20220730.jpg

The BR Class 46 diesel-electric locomotive was originally classified as the Type 4 ‘Peak’and was the third of the Sulzer 'Peak' classes. The introduction of [[TOPS codes|TOPS]] saw the type designated as Class 46. A total of 56 were built by BR Derby between 1961 and 1963 as part of BR's modernisation plans to replace steam locomotives.

A total of 56 were The first Sulzer Type 4 class, which became the Class 44, was built by BR Derby between 1961 and 1963 as part 1959-60. All 10 members of BRthe class were named after mountains, giving rise to the nickname 'Peak's modernisation plans which carried over to replace steam locomotivesthe subsequent Class 45 (built 1960-62) and Class 46. It was the third <ref group="note">None of the ‘Peak’ subsequent 'Peak' classes were named after what became the Classes 44 mountains, although some Class 45s and 45one Class 46 were named after Army regiments.</ref> The Type Class 46 were built with the same Sulzer 12-cylinder 12LDA28-B engine as the Class 45s, rated at 2,500 bhp, but with Brush transmissions. This arrangement was later developed further with the ubiquitous Class 47.

The class were used on both goods and passenger services, with the latter notably including heavy cross-country expresses between the north east and south west. They were fitted with steam powered train heating boilers but, unlike some of the Class 45s, never fitted with electric train supply.

They The members of the class were fitted all withdrawn between 1977 and 1984. One was subsequently destroyed in 1984 in a staged collision as part of a nuclear flask test, with steam powered train heating boilers all butthree being scrapped. Of the three surviving examples, unlike some of Pete Waterman's D172 (46035) became the Class 45s, never fitted with electric train supplyfirst preserved diesel locomotive to receive mainline certification in 1994.

'''D182''' entered service in September 1962 at Gateshead, where it remained allocated for its entire service career. As built, it was fitted with vacuum brakes and steam heat. It was converted to dual braking in August 1970 by the addition of air braking. By that time it carried BR Blue livery with the full yellow cab front.<ref>[https://www.brdatabase.info/locoqry.php?action=locodata&type=D&id=182&loco=182 BR Database] (retrieved 19 August 2022)</ref> 

It On 22 March 1982, 46045 was withdrawn recorded as being available at Loughborough, having recently been at Millerhill in Scotland.<ref name=Derby>[https://www.derbysulzers.com/class46end.html Derby Sulzers website] (Retrieved 16 July 2022)</ref><ref group="note">The locomotive underwent N4 repairs at Derby Works in March 1982 which may explain its presence at Loughborough.</ref> During 1984 the locomotive was 'stopped' on numerous occasions with traction motor and other power issues. After the locomotive failed at Taunton on 24 November 1984 on while hauling the Western Region07.50 Bristol to Penzance service, being it was withdrawn and returned to Derby.

On withdrawal it was renumbered '''97404''' and transferred to Research department stock during December 1984, running until 1986 when it was stored after suffering a generator flashover<refname=Derby/>[https://www.derbysulzers.com/class46end.html Derby Sulzers website] (Retrieved 16 July 2022)It remained in Departmental stock until September 1990<ref>Locomotive Directory 2021, Key Publishing Ltd, ISBN 978 1 8082 017 1</ref>.

D182 is one of three remaining class members. It is owned by Peak Locomotive Co Ltd Company Limited and is normally based at the Midland Railway Centre, Butterley. It retains its steam heating boiler.

It retains its steam heating boilerThe locomotive has carried several different liveries in preservation. The first picture below shows D182 in 2008 at Grosmont on the NYMR, then in BR green livery. The second picture shows D182 in 2016 at Butterley in BR livery with half yellow cab front. <gallery mode=packed heights=200px style="text-align:left">Class 46 D182 at Grosmont 10th May 2008.jpg | D182 at Grosmont, NYMR (2008)D182_20160828.jpg | D182 at Butterley (2016)</gallery> D182 subsequently underwent an overhaul, with the overhauled generator, turbocharger and intercoolers being refitted in October 2020.<ref>Midland Railway Diesel Group on Facebook</ref>. Since that overhaul the locomotive is now in BR blue livery with full yellow cab front.

D182 arrived on the SVR in May 2022 for the Spring Diesel Festival. In July 2022 the SVR announced that, given the then issues with coal supply, it had also taken the opportunity to retain the locomotive following the Spring Diesel Festivalon hire, to give providing another locomotive for use during the main season.<ref>[https://www.svrlive.com/bljul22 Branch Lines, July 2022]</ref> Its boiler meant a further period of hire, to cover winter services, was also mooted. ===Peak Locomotive Company===The Peak Locomotive Company is a private limited company No. 01593522. It was incorporated on 26 October 1981 as the Peak Locomotive Preservation Company Limited, adopting its present name in 1992.<ref>[https://find-and-update.company-information.service.gov.uk/company/01593522 Companies House]</ref>  In 1982 the company acquired Type 4 D4 ''Great Gable'' (later numbered 44004),<ref>[http://www.gedholmes.co.uk/content/peak-locomotive-company Peak Locomotive Company, ''Ged Holmes'']</ref> one of the first ten named Class 44s.