National Rail NR class

on The Overland duties in May 2007 livery '' MK V livery at Cook, South Australia ''s MK I livery When National Rail commenced operations in April 1993, it inherited a diverse collection of rolling stock and locomotives from various operators to operate interstate freight services in Australia. The fleet included locomotives of mixed age and power, leased from FreightCorp, V/Line and Australian National. In September 1995, National Rail awarded a contract to A Goninan & Co for 80 locomotives, which later became 120. NR1–NR60 were built at Broadmeadow, and NR61–NR120 were constructed at Bassendean. The frames were built at Hexham and the bogies at Goninan's Landsdowne Engineering subsidiary in Taree. The first Broadmeadow-built unit ran on 23 September 1996. Each locomotive was required to accumulate of trouble-free running before being accepted. ==Entry to service==

With the arrival of the NR class, the V/Line C class (which were owned by National Rail) and relatively new EL class were withdrawn and stored. Once all 120 units were delivered, National Rail retained the AN, BL and DL class locomotives, along with thirteen 81 class and several hired G class. The new locomotives were placed on time sensitive trains first. When first delivered, the NR class were banned from running in New South Wales by the Environment Protection Authority due to excessive noise when under dynamic braking, but the ban was lifted after further testing. The class could also not lead on the Victorian standard gauge network due to the lack of suitable radio equipment. In later years NR76 to NR98 were provided with V/Line Section Authority System equipment to work the Western standard gauge line, while NR1 to NR13 and NR61 to NR72 were fitted with V/Line radios to operate on the Victorian North East line. ==Notable accidents==

On 25 May 2006, NR33 was involved in a level crossing incident in Lismore, being the third locomotive on Adelaide to Melbourne freight service 4AM3, behind DL40 and NR52. A truck drove into the side of the NR during low visibility conditions and the subsequent accident saw 41 freight wagons of the train land on top of NR33. The locomotive was subsequently written off afterwards. On 21 April 2016, train 3MP5 derailed near Rawlinna in Western Australia. The two locomotives, NR34 and NR50, were badly damaged, but both were rebuilt and returned to service in late 2016 and mid 2017 respectively. On 24 December 2019, 7MP5 hauled by NR80/NR59 collided with the rear of 2K66 Watco/CBH grain train, at Jumperkine, Western Australia, which resulted in a driver fatality. NR59 was later forwarded back to Melbourne, while NR80 was rebuilt at UGL Bassendean, being released as NR122 during early 2021. On 31 December 2023, emergency services were called to the Barrier Highway after train 7SP5 with NR41/NR79 collided with a truck. The crash caused the deaths of both train drivers. The truck driver was uninjured. Both locomotives were destroyed and were scrapped during the clean up of the site. ==Features==

The NR Class introduced many new features. These were the first locomotives in Australia to have "variable horsepower", which meant that the power output of the engine had three different settings, making the NR class the most fuel-efficient locomotives in Australia. They have GE 7FDL-16 engines, with power levels of , or , mass of , a Co-Co wheel arrangement and a maximum speed of . They can hold of fuel. The NR Class cab was designed taking into consideration the results of an extended consultative process with the end users. This has resulted in a cab that has been well accepted. The layout of the control stand evolved from a British Rail Class 60 cab, and is substantially different from the more common AAR type I (stand) and Type II (desk) cabs. The design is a long hood unit locomotive, with only one cab but two separate sets of controls within the cab, which allow it be driven either "A" or "B" end leading. This locomotive had to pass all tests, such as being able to shunt if required, drive "long end leading" if needed, and allow drivers to do checks on fuel, brakes, and sand. Despite the twin controls, operation of the class "B" end leading is avoided, with single NR classes being turned on turntables or rail triangles to ensure they face the correct way. ==References==