SNCF 240P information

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SNCF 4-240A
#4703, the third 4-240A, during the PO days.
Type and origin Power type Steam Designer André Chapelon
Specifications Configuration: ​  • Whyte 4-8-0  • UIC 2′D h4v Driver dia. 1,900 mm (74.80 in) Length 20.79 m (68 ft 3 in) Axle load 20 t (19.7 long tons; 22.0 short tons) Adhesive weight 80.5 t (79.2 long tons; 88.7 short tons) Loco weight 136.5 t (134.3 long tons; 150.5 short tons) Tender cap. 12 t (11.8 long tons; 13.2 short tons) coal 34,000 L (7,500 imp gal; 9,000 US gal) Firebox: ​  • Grate area 3.75 m2 (40.4 sq ft) Boiler pressure 2.00 MPa (290 psi) Heating surface 213 m2 (2,290 sq ft) Superheater: ​  • Heating area 68 m2 (730 sq ft) High-pressure cylinder 420 mm × 650 mm (16.535 in × 25.591 in) Low-pressure cylinder 650 mm × 690 mm (25.591 in × 27.165 in)
Performance figures Power output 4,000 hp (3.0 MW) Tractive effort 260.40 kN (58,540 lbf) "starting" mode, 207.61 kN (46,670 lbf) normal compound mode

The SNCF 4-240A class and SNCF 5-240P class was a group of 37 (12 + 25) 4-8-0 steam locomotives designed by André Chapelon, and regarded by some, as one of his best designs.

They started life as Chemin de Fer de Paris à Orléans (Paris-Orleans Railway) 4500 class 4-6-2s before being rebuilt. The new boiler with the long, narrow Belpaire firebox came from the Nord "Super Pacifics". With all the pipes, domes, and pumps, these were double-chimneyed, husky looking locomotives of very different appearance than the Pacifics.