OKK tank wagons
As OKK tank car is a series of tank cars referred to in various Swiss meter gauge lines are in use.
Creation of the first series (1948)
From the defense strategy as it was developed in the context of the Second World War, the Swiss Army created various mountain airfields that were equipped with shelters for combat aircraft and the associated logistics. Many of these airfields were located near narrow-gauge railways. That is why the Bundes-Tank-Anlagen (BTA) decided to order 15 meter-gauge tank wagons from SWS and Giovanola (Kessel) and to use them as private wagons for the railways concerned. They were equipped in such a way that they could be braked with compressed air or vacuum, if necessary equipped with a gear brake and, if required, equipped with a central buffer and a lower (Zp1) or lateral (Zp2) screw coupling or automatic GF coupling (GFN). In 1948 five cars were discontinued at the RhB , one each at VZ, FO and SchB , three at MOB and one at GFM and finally three at SBB Brünigbahn . If necessary, the RhB wagons also ran on the subsequent networks of VZ, FO and SchB, whereby they usually ran together with the wagons of these railways, which were equipped with gear brakes. There were also deployments on the MOB / GFM network when block trains were formed there to refill tank systems.
The wagons have an axle base of 4600 mm, the underframe is 7780 mm long, the axles are not centered because of the brake platform, the overhang is 1730 mm on the platform side and 1450 mm on the other side. The length over the buffers was originally 8620 mm, today with Zp2 (MGB) 8720 mm. The boiler holds 17,000 l and is 6800 mm long. The dead weight is 9.6 t without and 10.0 t with gear. The load weight was 11.8 t; today the MGB wagons that are still available are approved for 14.2 t.
Construction of a second series (1971)
The tasks of the BTA had meanwhile worked out in the Oberkriegskommissariat (OKK). This ordered another 15 cars from SIG and FC (Kessel), which went into operation in 1971. Six cars went to FO, two to BVZ, five cars to MOB and two to GFM. Finally, the management of the wagons was transferred to the Federal Office for Enterprises of the Army (BABHE).
The wagons have an axle base of 4600 mm, the underframe is 7840 mm long, the axles are centered differently from the first series, the overhang on both sides is 1620 mm. The length over the buffers is 8720 mm. The boiler holds 17,000 l and is 6800 mm long. The dead weight is 9.2 t. The load weight was 11.8 t; today the MGB wagons that are still available are approved for 14.2 t.
End of military service and further use
The RhB wagons were definitely moved to the MOB and GFM network in 1975 and 1989, as the RhB had enough of its own, larger tank wagons available. Towards the end of the last millennium, the army withdrew from most of the mountain airfields and renounced the storage of aircraft fuels in the respective Alpine valleys. Therefore, the liquidation of the narrow-gauge wagon fleet began in 1996. Most of the cars became the property of the hiring railways. These led them to demolish or converted them into company cars. Private construction companies were also interested in the base frames, as they can be easily adapted for use on different networks. Coupling wagons were created from two MOB wagons, with a coupling according to the MOB standard (Zp1) on one side and the RhB standard (Zp2) on the other, allowing the RhB to hire construction company cars (especially ballast wagons and dump trucks) and MGB facilitate.
The only narrow-gauge railway other than the RhB that still transports mineral oil remains the BVZ, which ensures the supply of the car-free resort of Zermatt . The BVZ therefore initially took over the two FO cars from 1948 and since the merger to form MGB, three FO cars from 1971 have been in regular use in Zermatt. As a rule, heating oil is transported, but a car also supplies the Zermatt helicopter landing pad with jet fuel. In two cars from 1948, a tank from former FO cars from 1971 was placed on the underframe, whose underframes were used elsewhere. A single car from 1948 remains in operation in its original condition (MGB Uhk 2872), another seven with boilers from 1971. Some of the boilers are still in use as water vehicles.
The following table shows the curriculum vitae and the further use of the thirty cars.
| train | first no. | train | last number | Re-use | |
|---|---|---|---|---|---|
| SWS / Giovanola 1948 | |||||
| BVZ | 991 | 1960-72: 2891 | BVZ | 2871 | 1998 BVZ / MGB Uhk 2871, 2006 boiler ex 4893, kerosene |
| FO | 992 | FO | 4891 | 1998 BVZ / MGB Uhk 2872 ", heating oil, 2017 in use for kerosene | |
| SchB | 993 | FO | 4892 | 1998 BVZ / MGB Uhk 2873 ", 2006 boiler ex 4898, heating oil | |
| RhB | 10001 | 1989 | MOB | 900 | 2000 conversion X 56 |
| RhB | 10002 | 1989 | MOB | 899 | 1996 conversion of the X 50 (coupling car) |
| RhB | 10003 | 1989 | MOB | 890 | 1996 conversion of the X 49 (coupling car) |
| RhB | 10004 | 1989 | GFM | 1105 | 2000 at BVZ |
| RhB | 10005 | 1975 | GFM | 1104 | 2000 at BVZ |
| GFM | 1101 | GFM | 1101 | 2000 at BVZ | |
| MOB | 891 | MOB | 891 | 2000 conversion X 53 | |
| MOB | 892 | MOB | 892 | 2000 conversion X 54 | |
| MOB | 893 | MOB | 893 | Canceled in 1996 | |
| SBB | 8911 | SBB | 8911 | 1996 Ausr., 1998 conversion of CJ Lb 354, cistern with Ug Gb 2214 = X 9761 | |
| SBB | 8912 | SBB | 8912 | 1996 equipped, 1998 conversion of the CJ Lb 355 | |
| SBB | 8913 | SBB | 8913 | 1996 equ.,? Conversion of the Jenzer flat car? | |
| SIG / FC 1971 | |||||
| BVZ | 2872 | 1998 | BVZ | 2874 | 2000 BVZ / MGB Uhk 2874, heating oil |
| BVZ | 2873 | 1998 | BVZ | 2875 | 2000 BVZ / MGB Uhk 2875, heating oil |
| FO | 4893 | FO | 4893 | 2001 Conversion of X 4945 (working lift), boiler for 2871 | |
| FO | 4894 | FO | 4894 | 2003 MGB Uhk 4894, heating oil | |
| FO | 4895 | FO | 4895 | MGB Uhk 4895, water truck | |
| FO | 4896 | FO | 4896 | 2003 MGB Uhk 4896, heating oil | |
| FO | 4897 | FO | 4897 | 2003 MGB Uhk 4897, heating oil | |
| FO | 4898 | FO | 4898 | Discarded in 2005, boiler for 2873 | |
| GFM | 1102 | GFM | 1102 | 1999 to MTVS (Valmondois, France) | |
| GFM | 1103 | GFM | 1103 | 1998 TPF X 1103 | |
| MOB | 894 | MOB | 894 | 2000 conversion X 55 | |
| MOB | 895 | MOB | 895 | 2000 MOB, parked (Saanen airfield) | |
| MOB | 896 | MOB | 896 | 2000 MOB, parked (Saanen airfield) | |
| MOB | 897 | MOB | 897 | 2001 conversion X 29 " | |
| MOB | 898 | MOB | 898 | 2000 MOB, parked (Saanen airfield) | |
swell
- Rolling stock directories of the Swiss Rolling Stock Directory Association, as of January 1, 1975, 1980, 1985, 1990, 1995, 2000, 2005.
- Theo Stolz, Dieter Schopfer: Brig – Visp – Zermatt, history and rolling stock. Self-published, Wabern / Zurich 1983, ISBN 3-907976-00-2
- ^ Directory of the rolling stock of the Swiss Private Railways 1950, published by the Federal Office of Transport, Bern 1952
- ^ February 2006 according to the VRS Rolling Stock Directory 2005 and official sources. However, there are photos from August 3, 2007 that show this car still with an old boiler.
- ↑ SER 4/1999
- ^ Musée des tramways à vapeur et des chemins de fer secondaires français