PLM 241 B 1

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PLM 241 B 1
Type and origin
Power type Steam
Builder Henschel & Sohn
Build date 1929
Total produced 1
Specifications
Configuration 4-8-2
UIC classification 2′D1′
Gauge 1,435 mm (4 ft 8 12 in)
Driver diameter 1,800 mm (70.9 in)
Length 16,125 mm (52 ft 11 in)
Width 115.44 tonnes (113.62 long tons; 127.25 short tons)
Boiler 3-stage
Boiler pressure HP: 110 bar (11.0 MPa; 1,600 psi),
MP: 58 bar (5.80 MPa; 841 psi),
LP: 13 bar (1.30 MPa; 189 psi)
Firegrate area 3.9 m2 (42 sq ft)
Heating surface:
– Total
187 m2 (2,010 sq ft)
Superheater area 95 m2 (1,020 sq ft)
High-pressure
cylinder size
240 mm × 650 mm (9.45 in × 25.59 in)
Low-pressure
cylinder size
500 mm × 700 mm (19.7 in × 27.6 in)
Performance figures
Maximum speed 110 km/h (68 mph)
Career
Operator(s) PLM
Class 241 B
Number(s) 241 B 1
Scrapped 1936

The PLM 241 B 1 was a high-pressure steam locomotive built in 1929 for the PLM (Chemins de fer de Paris à Lyon et à la Méditerranée) using the Schmidt high-pressure system. It was a 4-cylinder compound design.

The manufacturer was Henschel & Sohn of Germany; it was most unusual for a French railway to buy German technology, there being somewhat less than total trust of Germany at the time. Schmidt and Henschel seem to have been the only sources of suitable technology.

Only one was built. The locomotive was scrapped in 1936.

  • Boiler: 3-stage boiler; high pressure circuit: 110 kp/cm² (10.8 MPa, 1,560 psi)' secondary circuit: 58 kp/cm²; low-pressure circuit: 13 kp/cm²
  • Power: 2530 hpi (1.89 MW)
  • Speed (attained) 110 km/h (66 mph)

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