The PLM 241 B 1 was a

high-pressure steam locomotive A high-pressure steam locomotive is a steam locomotive with a boiler that operates at pressures well above what would be considered normal for other locomotives. In the later years of steam, boiler pressures were typically . High-pressure locomotiv ...

built in 1929 for the PLM (

Chemins de fer de Paris à Lyon et à la Méditerranée The Compagnie des chemins de fer de Paris à Lyon et à la Méditerranée ("Railway Company of Paris to Lyon and the Mediterranean"), also known as the Chemins de fer Paris-Lyon-Méditerranée or simply PLM, established in 1857, was one of Fran ...

) using the

Schmidt high-pressure system A high-pressure steam locomotive is a steam locomotive with a boiler that operates at pressures well above what would be considered normal for other locomotives. In the later years of steam, boiler pressures were typically . High-pressure locomotiv ...

. It was a 4-cylinder compound design. The manufacturer was

Henschel & Sohn Henschel & Son (german: Henschel und Sohn) was a German company, located in Kassel, best known during the 20th century as a maker of transportation equipment, including locomotives, trucks, buses and trolleybuses, and armoured fighting vehicle ...

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 MPA or mPa may refer to: Academia Academic degrees * Master of Performing Arts * Master of Professional Accountancy * Master of Public Administration * Master of Public Affairs Schools * Mesa Preparatory Academy * Morgan Park Academy * Mound ...

, 1,560

psi Psi, PSI or Ψ may refer to: Alphabetic letters * Psi (Greek) (Ψ, ψ), the 23rd letter of the Greek alphabet * Psi (Cyrillic) (Ѱ, ѱ), letter of the early Cyrillic alphabet, adopted from Greek Arts and entertainment * "Psi" as an abbreviation ...

)' 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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Pictures of the PLM 241 B
Steam locomotives of France 4-8-2 locomotives Henschel locomotives Railway locomotives introduced in 1929 Experimental locomotives High-pressure steam locomotives Individual locomotives of France Standard gauge locomotives of France Scrapped locomotives {{France-rail-transport-stub