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History of the PLM Serie 6000 Pacifics


The REE Models 231 D, 231 G and 231 K all belong to a large family of Pacifics, designed for the PLM and improved by the SNCF.  In total 462 Pacific locomotives were constructed between 1909 and 1933.


PLM - Compagnie des chemins de fer de Paris à Lyon et à la Méditerranée

PLM New Locomotives

6001 prototype saturated steam compound of 1909.

Renumbered 231 C 1 in 1925.

Later No. 5-231 C 1.

6011 to 6030 series – Constructed by Henschel of Kassel in 1912 derived from 6001. Saturated Steam Compounds

Renumbered 6201 to 6220 in 1913

Renumbered 231 C 86 and 231 C 2 to 231 C 20 in 1925

SNCF: 5-231 C 86 and 5-231 C 2 to 5-231 C 20 (Rebuilt by the SNCF as 5-231 K 86, 5-231 K 2 to 5-231 K 20)

6101 prototype simple expansion and superheated. Built in 1909. Renumbered 231 A 1 in 1925 (converted to 231 E 1, see below)

6102 to 6171 series of 1911 and 1912 from 6101.

6102-6131 Constructed 1911 by Henschel of Kassel in Germany

6132-6171 Constructed 1912 by Société française de constructions mécaniques (Cail)

Renumbered 231 A 2 to 231 A 71 in 1925 (converted to 231 E 2 to 231 E 71, see below)

6172 to 6191 series of 1913 based on 6101 prototype with simple expansion and superheater. Boiler pressure raised to 14bar from 12bar.

6172 to 6191 built at Usines des Batignolles in 1913

(Converted to 6051 to 6070)

6221 to 6285 series of 1916-1917 and 1919-1921 derived from 6001

6221 to 6250 built at Ateliers et Chantiers de la Loire in 1913.

6251 to 6260 built at Ateliers et Chantiers de la Loire in 1914.

6261to 6285 Built at SACM in 1921.

Renumbered 231 C 21 to 231 C 85 in 1925,

Later: 5-231 C 21 to 5-231 C 85

6301 to 6480 series of 1921-1924 derived from the 6200 series.

6301 to 6330 Built at Schneider au Creusot in 1921.

6331 to 6360 Built at Schneider au Creusot in 1922-23.

6361 to 6410 Built at Marine Homécourt à Saint-Chamond in 1923.

6411 to 6460 Built at Marine Homécourt à Saint-Chamond in 1924.

6461 to 6480 Built at Société Franco-Belge in 1923

Renumbered 231 D 1 to 231 D 180 in 1925

Later : 5-231 D 1 to 5-231 D 180

231 D 181 to 231 D 230 series built in 1925 continuation of 6301 to 6480.

231D 181 to 231 D 230 Built at Schneider au Creusot in 1925

Later: 5-231 D 181 to 5-231 D 230

231 F 231 to 231 F 285 series 1931-1932 improved continuation of the 231 D series.

231F 231 to 231 F 285 Built at Schneider au Creusot in 1930.

(converted to 231 G 231 to 231 G 285, See below)

PLM rebuilt locomotives

6051 to 6070 from 1917 until 1924 the simple expansion locomotives of the 6172 to 6191 series were converted to compound steam expansion with linked high and low pressure cylinders.

Renumbered 231 B 1 to 231 B 20 in 1925,

SNCF: 5-231 B 1 to 5-231 B 20

231 C 9 One off conversion. Becomes the prototype for the 231 K series. Keeps original number 231 C 9 in 1934

SNCF: 5-231 K 9


231 C 17 One off conversion. Becomes the prototype for the I series (Abandoned in favour of the 231K design. Keeps original number 231 C 17 in 1935.

Later: 231 I 17 then 231 K 17

231 E 1 to 231 E 71 Locomotives 231 A 1 to 231 A 71 converted from Simple expansion to Compound expansion cylinders from 1925 up to 1930.

Later 5-231 E 2 to 71

231 F 141 Prototype converted from 231 D 141in 1929. The Oullins workshops fitted a boiler capable of 20bar, a superheater and an ACFI feed-water heater. Various modifications were carried out up until 1933

(converted to 231 H 141, below)

231 F Between 1930 and 1931 a number of the 231D were converted to 231 F specification with a high pressure boiler

1930 : 231 D 2, 11, 29, 30, 46, 47, 57, 116 , 117, 118, 121, 130, 135, 138, 139, 142, 149, 152, 166

1931 : 231 D 13, 36, 123, 145

F 231 to 231 F 285 – 1931-1933, locomotives fitted with Smoke deflectors, electric lighting and DABEG feed water heaters (Later rebuilt as 231G)

231 G Between 1931 and 1932 a number of the 231D and 231 F were converted to 231G specification.

1931-1932 : 231 D 16, 17, 21, 133, 146, 157, 178

1937 : 231 F 2, 13, 30, 36, 46, 47, 57, 116, 117, 118, 121, 123, 138, 139, 142, 145, 166

231 G 231 to 231 G 285 Conversions from 231 F 231 to 231 F 285 between 1934 and 1938.

Later 5-231 G 231 to 285

231 H 141 The High pressure prototype 231 F 141 was fitted with a futuristic streamlined body in 1933.

SNCF: 5-231 H 1

231 H 2 to 231 H 91 Planned conversions of all the locomotives from the 231 B and 231 E series Work not carried out by the PLM

231 I 17 Transitional registration of 231 C 17 prototype (converted to 5-231 K 17)

231 K 1 to 231 K 86 Planning work by PLM for the conversion of all remaining 231 C to 231K specification (Work carried out under the SNCF)

SNCF rebuilt locomotives

5-231 G 2 up to 5-231 G 230 The remaining 5-231 D were upgraded to 231 G specification from 1938 to 1949 (215 machines in total)

5-231 H 2 to 30 transformation of 12 machines 5-231 B and 17 machines 5-231 E from 1938 to 1948 (61 unaccounted for, Scrapped?)

5-231 K 2 to 86 transformation of 84 machines 5-231 C from 2 to 86 from 1938 to 1949. 231K 9 and 231 K 17 already converted by the PLM

Beginning in 1950 many 231 G and 231 K were transferred to the Est, Nord and Sud-Ouest regions of the SNCF.




 
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