| État 40-001 – 40-143 | |
|---|---|
| 040 TA 137 at Longueville, 19 September 2010. | |
| Power type | Steam |
| Build date | 1914–1922 |
| Total produced | 143 |
| Configuration | 0-8-0T |
| UIC classification | D |
| Gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Locomotive weight | 62.8 to 63.7 tons |
| Fuel type | Coal |
| Fuel capacity | 3 tons |
| Firegrate area | 1.8 m2 (19 sq ft) |
| Heating surface: Total |
112.5 m2 (1,211 sq ft) |
| Cylinders | Two, outside |
| Cylinder size | 480 × 600 mm (18.90 × 23.62 in) |
| Valve gear | Walschaerts |
| Career | Chemins de Fer de l'État, SNCF |
| Class | SNCF: 040 TA Ouest |
| Number | État: 40-001 to 40-143 SNCF: 040 TA 1 to 040 TA 143 |
| Preserved | 2: 040 TA 137 and 040 TA 141 |
The 040 TA was an 0-8-0 tank engine of the Chemins de Fer de l'État.
The series of 143 engines were built between 1914 and 1922, with a break during World War I. These were designed to replace the 030 0-6-0 shunting engines. The 0-6-0 engines possessed a traction force of 40 tons, while the 0-8-0 were designed to have a traction force of 60 tons. It was in 1913 that the research department of the Chemins de Fer de l'État began to study the question of a replacement. The first 18 engines, numbered 40-001 to 40-018, were put into service in 1914. The war prevented the construction of the rest of the series, and just two engines, 40-019 and 40-019, were built. Construction resumed in 1920 and the full series of 143 engines was put into service by 1922. The engines were assigned to the depots of Paris-Vaugirard, Montrouge, Batignoles, Sotteville (Rouen), Le Havre, Dieppe, Trappes, Chartres, Caen, Cherbourg, St-Brieuc, Brest, Nantes, Rennes and La Rochelle as well as industrial railways and harbours. When the SNCF was formed, the series was renumbered 040 TA 1 to 040 TA 143. There are two examples of this class which have survived into preservation. They are 040 TA 137 & 141.
The 040 were of simple expansion with two cylinders and possessed a Crampton firebox and Walschaërts type valve gear. There were variants in cabs and several open cabs, others, closed. The water tanks on each side of the firebox possessed a sloping front and gave the driver additional vision and permitted him to see if workmen were on the track in front of the engine.
A replacement for the 040 was difficult to design as diesel transmission could not cope with slow and long starts.