SNCF Class BB 75000
| Company type | Diesel-electric locomotive |
|---|---|
| Industry | Rail transport |
| Predecessor | SNCF Class BB 67300, CC 72000, BB 66000 |
| Founded | 2006 |
| Headquarters | Belfort , France |
| Products | Freight locomotives |
| Parent | SNCF |
The SNCF BB 75000 series, also referred to as the SNCF BB 475000, consists of four-axle Bo′Bo′ diesel electric locomotives commissioned in 2000 by SNCF to renew its outdated freight locomotive fleet.
Known alternatively as the Prima DE30BAC, these locomotives share a visual similarity with the SNCF Class BB 27000 but were developed through a partnership between Alstom and Siemens Mobility. Their electrical systems incorporate Siemens technology akin to that used in the Siemens EuroRunner for ÖBB, while their structural design, including the bodyshell and bogies, is based on Alstom’s Prima platform.
The initial procurement plan envisioned 400 units starting from 2007, with an option to acquire an extra 100 locomotives. This €1 billion contract was intended to modernize SNCF’s freight operations by introducing more efficient and contemporary locomotives.
Background
The acquisition of the BB 75000 locomotives was part of a seven-year initiative launched in 2000 aimed at replacing aging diesel freight locomotives. SNCF required new diesel units due to the obsolescence of its existing fleet—the last deliveries dated back to 1975—and the high costs associated with their operation and maintenance. Furthermore, tightening European regulations on emissions and noise levels necessitated an upgrade of the fleet.
Tenders
In November 2000, SNCF issued a tender for 124 diesel freight locomotives: 55 single-cab models with power outputs between 1200 and 1800 kW intended for medium-distance services, and 69 dual-cab, high-powered locomotives rated between 2250 and 3200 kW designed to replace CC 72000s on long-haul routes. However, budget limitations forced the cancellation of the high-powered Co'Co' locomotive segment.
A subsequent tender focused exclusively on a versatile medium-power locomotive around 1800 kW capable of multiple-unit operation. This approach aimed to reduce expenses compared to developing a new high-powered six-axle model. Proposals were submitted by November 2001, with technical evaluations conducted in spring 2002.
By November 2002, Alstom and Siemens had formed a consortium led by Alstom. The final contract, signed on 27 February 2004, increased the order volume to 400 medium-power locomotives, which would reduce the average age of SNCF’s freight fleet to between 15 and 20 years.
The design incorporated reliable components: traction equipment similar to Siemens’ OBB Rh 2016 and structural elements derived from Alstom’s Prima series (427000).
The purchase agreement was officially signed on 25 March 2004 at Villeneuve-Saint-Georges station with representatives from SNCF, Alstom, and Siemens present. The contract covered an initial batch of 400 units plus an option for an additional 100.
For this occasion, locomotive BB 437002 was temporarily rebranded as the forthcoming BB 475001.
Testing and approval
Production began in spring 2006 at Alstom’s Belfort facility. The first two units, BB 75001 and BB 75002, underwent manufacturer testing at Germany’s Test- and Validationcenter Wegberg-Wildenrath between March 2006 and May 2007 before returning to Belfort for final acceptance tests ahead of their delivery scheduled for September or October 2007.
Locomotives BB 75003 and BB 75004 were subjected to trials on the national rail network during mid-2006. These included torque and mechanical evaluations at Vitry-sur-Seine as well as dynamic performance, noise, and vibration assessments along the French Riviera. By late October 2006, specifications for the main production series were finalized.
Further testing saw BB 75004 complete braking and haulage trials in Châlons-en-Champagne and Nevers, while BB 75006 carried out shunting tests at Plouaret by November 2006. The Établissement public de sécurité ferroviaire (EPSF) granted commercial operation certification in February 2007, which was officially issued to Fret SNCF on 27 March.
Service
After receiving authorization, production ramped up swiftly, achieving a total of thirty locomotives by June 2007.
Every BB 75000 unit is delivered to Gare de Longueau, servicing the TER Picardie route in Amiens and substituting the SNCF Class BB 67400 on lines connecting northern France with Belgium. Their deployment is mainly divided between two maintenance facilities:
- Longueau: housing between 150 and 200 units, including those equipped for international service (starting from BB 475100)
- Avignon
These locomotives are engineered for journeys under 400 kilometers, capable of hauling loads up to 1,800 tonnes; heavier freight demands multiple-unit operation.
The initial rollout spans northern France and Île-de-France regions (Massy, Le Bourget, Vaires-sur-Marne, Troyes) beginning June 11. Subsequent batches will be allocated to eastern and southeastern territories, while western sectors will be served by the newer BB 60000 and upgraded BB 69000 classes.
On March 28, 2007, the first commercial run employing multiple BB 75000 units occurred with locomotives BB 75009 and BB 75006 operating in tandem.
Conclusion
The BB 75000 series is intended to phase out aging models like the BB 67300, CC 72000, and older BB 66000 units through multi-unit configurations.
There is potential for passenger-oriented variants to be developed—akin to the BB 27300 Transilien series derived from the BB 27000—utilizing existing platforms. This development supports SNCF’s ongoing military transport missions, which frequently involve mixed consists combining freight and passenger cars.
Updates
European environmental regulations are imposing stricter limits on particulate matter and CO2 emissions, with new standards introduced in January 2009 and January 2012. To comply with the January 2009 requirements, all newly manufactured locomotives will incorporate the MTU 4000 R43 diesel engine alongside upgraded exhaust technology, resulting in changes to their external appearance. These updated models will bear numbers starting at 200 (for example, BB 475200).
Versions
| Number Range | Description |
|---|---|
| 75001 to 75099 | Equipped with MTU 16V 4000 R41 engines |
| 75100 | Nonexistent |
| 75101 to 75133 | MTU 16V 4000 R41 engines compatible with German and Benelux rail networks |
| 75300 (modified from 75000) | MTU 16V 4000 R41 engine plus intercom system installed |
| 75401 to 75468 | Fitted with MTU 4000 R43 L engines delivering 2400 kW power |
- Units numbered from 75001 to 75006 were utilized for testing purposes
See also
- Alstom Prima locomotives
- Siemens Eurorunner – comparable locomotives featuring Siemens electric drive systems
- SNCF Class BB 27000 and SNCF Class BB 37000 – related classes of electric locomotives
- SNCF Class BB 60000 – single-cabin locomotives produced concurrently as part of fleet renewal
Bibliography
External links
- BB 75000 Prima – Technical specifications and imagery