Editing NIR 1 Class (section)

{{Short description|Irish diesel locomotive}}
{{Use dmy dates|date=July 2017}}
{{Use British English|date=July 2017}}
{{More citations needed|date=April 2008}}
{{Infobox locomotive
| name             = NIR 1 Class
| powertype        = Diesel-hydraulic
| image            = Broken-down train at Ballyrobert - geograph.org.uk - 1021197.jpg
| alt              = 
| caption          = NIR’s 1 class were prone to overheating. The driver is topping up No. 1’s radiator from an emergency supply of water carried on board.
| builder          = [[English Electric]] at [[Vulcan Foundry]]
| ordernumber      = 
| serialnumber     = EE: 3954–3956<br />VF: D1266–1268
| buildmodel       = ''Stephenson''
| builddate        = 1969
| totalproduction  = 3
| rebuilder        = 
| rebuilddate      = 
| numberrebuilt    = 
| aarwheels        = [[0-6-0]]
| uicclass         = C
| gauge            = {{Track gauge|5ft3in|lk=on}} [[Northern Ireland]]<br>{{track gauge|5ft6in|lk=on}} [[Sri Lanka]]
| trucks           = 
| bogies           = 
| wheeldiameter    = {{convert|3|ft|6|in|mm|0|abbr=on}}
| minimumcurve     = 
| wheelbase        = 
| length           = 
| width            = 
| height           = 
| axleload         = 
| weightondrivers  = 
| locoweight       = {{convert|42.5|t|2}}
| fueltype         = 
| fuelcap          = 
| lubecap          = 
| coolantcap       = 
| watercap         = 
| sandcap          = 
| consumption      = 
| watercons        = 
| primemover       = [[W.H. Dorman & Co|Dorman]] 12QTV
| rpmrange         = 
| enginetype       = 
| aspiration       = 
| displacement     = 
| cylindercount    = 
| cylindersize     = 
| transmission     = 
| multipleworking  = 
| maxspeed         = {{convert|29|mph|km/h|0|abbr=on}}
| poweroutput      = {{convert|620|hp|kW|-1|abbr=on}}
| tractiveeffort   = {{convert|25000|lbf|kN|2|abbr=on}}
| factorofadhesion = 
| trainheating     = 
| locobrakes       = 
| locobrakeforce   = 
| trainbrakes      = 
| safety           = 
| operator         = [[Northern Ireland Railways]]
| operatorclass    = 1
| powerclass       = 
| numinclass       = 
| fleetnumbers     = 1–3
| officialname     = 
| nicknames        = 
| axleloadclass    = 
| locale           = 
| deliverydate     = 
| firstrundate     = 
| lastrundate      = 
| withdrawndate    = 1986–1989
| preservedunits   = 
| restoredate      = 
| scrapdate        = 
| currentowner     = 
| disposition      = 
}}

The [[Northern Ireland Railways]] DH class was a class of three [[diesel-hydraulic locomotive|diesel-hydraulic]] [[shunting locomotive]]s obtained in 1969. All three have now been withdrawn, and two have since been rebuilt for work in [[Sri Lanka]].