| Comeng | |
| Interiorimage: | 434M Interior.jpg |
| Interiorcaption: | Interior of an EDI-refurbished Comeng with life extension upgrades |
| Stocktype: | Electric Multiple Unit |
| Service: | 28 September 1981 – present |
| Manufacturer: | Commonwealth Engineering |
| Factory: | Dandenong, Victoria |
| Refurbishment: | |
| Replaced: | |
| Successor: | |
| Formation: | 3-car sets (M–T–M) |
| Fleetnumbers: |
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| Operator: | Metro Trains Melbourne (2009–present) |
| Depots: | All Metro Trains depots |
| Lines: | |
| Yearconstruction: | 1981–1988 |
| Yearscrapped: | 2021–present |
| Numberbuilt: | 570 carriages (190 sets) |
| Numberservice: | 345 carriages (115 sets) |
| Numberscrapped: | 224 carriages |
| Carbody: | Stainless steel |
| Trainlength: | 71.2frac=16NaNfrac=16 |
| Carlength: |
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| Width: | 3.05frac=16NaNfrac=16 |
| Height: | 3835frac=16NaNfrac=16 |
| Doors: | 3 per side |
| Maxspeed: | 115km/h |
| Weight: | 141t (max) |
| Capacity: | 210 seated, 765 crush load per 3-car unit |
| Acceleration: | 0.8m/s2 |
| Deceleration: | 0.9m/s2 |
| Coupling: | Scharfenberg |
| Traction: |
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| Traction Motors: | 8 × GEC G317AZ 124kW (continuous) series-wound DC motor |
| Poweroutput: | 992kW (continuous) |
| Gauge: | broad gauge |
| Notes: | [1] [2] |
| Electricsystem: | (nominal) from overhead catenary |
| Collectionmethod: | Pantograph |
| Uicclass: | Bo′Bo′+2′2′+Bo′Bo′ |
| Bogies: |
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| Brakes: | Electro-pneumatic and rheostatic
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The Comeng is a class of electric multiple unit (EMU) operating on the suburban railway network of Melbourne. Built by their namesake Commonwealth Engineering (abbreviated as Comeng), the trains were introduced in 1981 as a replacement for the Tait and Harris trains. In total, 190 three-car trainsets were built, although only 115 remain in service and are expected to be retired by 2030.
The fleet underwent two major refurbishments. The first, a mid-life refurbishment, was carried out from 2000 to 2003 by Alstom and EDi Rail. The second, named the Comeng Life Extension Project, completed between 2017 and 2021, aimed to extend the trains' lifespan to meet their gradual replacement by the High Capacity Metro Trains and the X'Trapolis 2.0 trains. Alongside these upgrades, a number of minor improvement programs were also conducted on the trains to further enhance their efficiency, safety, and reliability.
Comeng trains are single deck and are semi-permanently coupled as M-T-M (motor-trailer-motor) sets. Most frequently, they are coupled as M-T-M-M-T-M (six-car) sets. Comeng trains have power operated doors that must be pulled open by hand but are closed by the driver. The trains were the first suburban trains in Melbourne to have air-conditioning in the passenger saloon. (The older Hitachi trains had driver only air-conditioning fitted more recently.[3])
They operate in larger numbers on the Northern, Caulfield, Cross City and Sandringham group lines. Since 2017, it has been rare to see Comengs on the Burnley and Clifton Hill group lines which are serviced almost exclusively by newer X'Trapolis trains. The design of Melbourne's Comeng trains is closely related to that of TransAdelaide's diesel-electric 3000 class railcars.
The Comeng fleet has begun retirement, with many sets being transferred to North Shore and Tottenham to be stored. The stored sets eventually being transferred to Laverton, North Bendigo or McIntyre for scrapping. The fleet will eventually be replaced by the High Capacity Metro Trains (HCMT) and X'Trapolis 2.0 fleet.
In 1979, the operator of the Melbourne rail network at the time VicRail, placed an initial order for 100 new 3-car train sets, with the intention of replacing the last of the Tait sets and the majority of the Harris sets. The contract was awarded to Commonwealth Engineering, with the trains being manufactured at Comeng's Dandenong rolling stock factory.
The first Comeng set, 301M-1001T-302M, entered service on 28 September 1981. By the middle of 1984, 76 sets had been delivered, and some of the older trains, including the last of the Tait rolling stock, had begun to be phased out. Following the operational problems and subsequent failed refurbishment of the Harris fleet, the initial order was increased from 100 to 190 3-car sets, with the aim of completely replacing both the Tait and Harris sets by 1988.[4]
Set 381M-1041T-382M was the first delivered in the Metropolitan Transit green and yellow scheme, though the sets including 27T and 28T had been repainted (with those cars renumbered 1027T and 1028T respectively) before then.[5] Notably, when the 41st set was delivered the front panels of the motor carriages were still silver-framed rather than yellow.[6]
The 45th set delivered had custom decals applied to the sides celebrating the halfway point through the order. On the side (above each door) was the quote "45th Super Train from The Met", and the sides also displayed the number 45 in large Numerals below the windows. This was found on two sets, 477M-1089T-478M and 479M-1090T-480M. These had been removed by 1 February 1991. 477M-1089T-478M still remains in service, but 479M-1090T-480M was stored at North Shore before being scrapped in early 2022.[7]
The final Comeng set to enter service was 697M-1199T-698M on 24 July 1989.
Between 2000 and 2003, the two train operators at the time, Connex and M>Train, had Alstom and EDi Rail respectively refurbish the trains.[8] [9]
The Alstom and EDi Rail sets have a number of differences, including:
Both sets had CCTV and emergency assistance panels introduced and installed as part of the refurbishment program.[10]
After Connex assumed responsibility for all of Melbourne's suburban train network in 2004, the EDI refurbished trains (from M>Train) had the M>Train exterior logos removed with a new Connex logo in its place alongside a repainted front panel. The trains also later received Connex blue and yellow side stripes, new seat fabric with the Connex branding.
Stage 1 of the life extension refurbishment works revolved only on exterior modifications, with much of the mechanical and safety systems remaining the same and their interiors largely unaltered from their 2014/2015 modifications. 25% of the existing Comeng fleet undertook only the stage 1 life extension refurbishment. The stage 1 upgrades include:
Stage 2 of the life extension refurbishment works concentrated on both interior and mechanical upgrades, with 75% of the existing Comeng fleet undertaking the stage 2 refurbishment. In addition to the stage 1 upgrades, the stage 2 upgrades include:
Stage 3 of the life extension refurbishment works focused on communications and additional mechanical upgrades, with 31% of the Comeng fleet, namely the disc brake units, having been further enhanced with these upgrades. These sets will more than likely be the last Comeng sets to remain in service when they will be eventually retired. In addition to the stage 2 upgrades, the stage 3 upgrades include:
The life extension refurbishment program was completed by the end of 2021 with 75% of the Comeng units having undergone the stages 2/3 upgrades. As of June 2023, all stage 1 sets, along with some stage 2 sets have been scrapped, having since been replaced by the High Capacity Metro Trains.
In November 2017, none of the remaining Comeng chopper carriages including the (691M-698M) motors and (1196T-1199T) trailers were included in the new Metro contract, which saw them retired out of service. Half of these units were stored at Newport Workshops, while the other half have been supplying parts to the remaining Comeng units in service.
In 2018, Comeng set 313M-1007T-314M and 367M-1034T-368M were withdrawn from service and stored at Newport Workshops.
In 2019, it was revealed that if the X'Trapolis 2.0 was made, the Comengs could be out of service as early as 2026.[16] However, it is most likely that the final Comeng set will be withdrawn closer to 2030.
On 21 August 2021, retired Comeng sets 321M-1107T-320M and 363M-1032T-364M were transferred to North Shore. These sets were replaced with the High Capacity Metro Trains, starting a long process of the retirement of Comeng sets, likely to take most of the decade. As of 27 April 2022, 44 3-car Comeng sets have been retired out of 189 3-car sets in service at the formation of Metro Trains Melbourne.
On 9 February 2022, the first Comeng unit was scrapped since 2014. This saw the scrapping of set 338M-1092T-484M at Dandenong South. Subsequently, there have been 70 3-car Comeng sets scrapped as of 30 May 2024.
On 12 June 2022, the last of the Stage 1 Comengs (331M-1050T-400M & 393M-1048T-394M) were transferred to Newport Workshops to be decommissioned.
All remaining Comeng sets of the earlier 'tread brake' variety are now EDI refurbishments, as of September 2022 all Alstom refurbished sets in this group had been withdrawn. As by this date, one chopper set (693M-1197T-694M) has been scrapped.
In June 2023, all Alstom tread brake Comeng sets have been scrapped, having only receiving the stage 1 life extension upgrades. 359M-1030T-360M was the final stage 1 Alstom refurbished set to be scrapped. By this date, the remaining chopper sets have all been scrapped.
As of 17 May 2024, this leaves only 58 Alstom refurbished disc brake sets and 57 EDI refurbished tread brake sets in revenue service. All of the Comeng's in revenue service are most EDI stage 2's and all Alstom stage 3's. All of these sets retired were all Stage 1's and some Stage 2's.
70 Comeng carriages have been scrapped or removed from service.[17]
Eight carriages have been scrapped prior to the major withdrawals (from 2021 onwards): 315M, 388M, 1165T, 1109T, 533M, 305M, 1003T and 306M. 315M was burnt out at Hurstbridge on 9 April 1983, along with Tait 472M,[18] 388M was hit by V/Line locomotive N457 at Officer, 1165T was burnt out at Northcote, 1109T was damaged in a collision with Comeng 634M at Epping,[19] while 533M was burnt out by vandals at Merlynston in April 2002. Both 1109T and 533M were stored at the Ballarat Workshops and were scrapped in August 2010.[20] In November 2012, 305M-1003T-306M crashed into a truck at Abbotts Road in Dandenong South. These cars were stored in Dandenong South near the crash site, visible from the Cranbourne Line until May 2014, when they were scrapped.
Following the Dandenong South collision, set 583M-1022T-589M was withdrawn and stored at Newport Workshops. This set was trailing 305M-1003T-306M but received significantly less damage. It never re-entered service and was later scrapped during the major withdrawals, being the first disc brake series set to be scrapped.
Another four carriages have been stored: 500M, 671M, 672M, and 1186T. 500M was burnt out at Sandringham in 2002[21] and can be seen in a yard close to the North Williamstown station side of the Newport railway workshops. 671M was partly burnt out at Gowrie in 1994. Spare cars 672M and 1186T, which were made redundant after 671M was burnt, underwent a prototype refurbishment before being stored. 671M is currently in use by Fire Rescue Victoria for firefighter training.
On 25 February 2019, EDI Comeng 333M collided with a buffer stop at the end of a stabling siding at Newport. The train was withdrawn from service and previously stored EDI Comeng 314M was modified to run with 1017T and 334M. 333M was coupled with existing retired cars 313M and 1007T, and was stripped of useable parts in preparation for scrapping.