Sentetsu Purei-class locomotives

The Purei-class (プレイ) locomotives were a group of steam tank locomotives with 2-6-2 wheel arrangement used by the Chosen Government Railway (Sentetsu) in Korea. The "Pure" name came from the American naming system for steam locomotives, under which locomotives with 2-6-2 wheel arrangement were called "Prairie".[1]

Chosen Government Railway Purei class (プレイ)
Gyeongbu Railway 1–18
Temporary Military Railway 19–52
Korean National Railroad Pureo1 class (푸러1)
Korean State Railway Purŏha class (부러하)
Sentetsu Purei-class locomotive No. 25
Type and origin
Power typeSteam
BuilderBaldwin
Build date1901, 1906
Total produced70
Specifications
Configuration:
​
 • Whyte2-6-2T
Gauge1,435 mm (4 ft 8 1⁄2 in)
Driver dia.1,370 mm (54 in)
Length10,205 mm (33 ft 5.8 in)
Width2,800 mm (9 ft 2 in)
Height3,860 mm (12 ft 8 in)
Adhesive weight37.00 t (36.42 long tons)
Loco weight52.00 t (51.18 long tons)
Fuel capacity1.8 t (1.8 long tons)
Water cap5,500 L (1,500 US gal)
Firebox:
 • Firegrate area		1.69 m2 (18.2 sq ft)
Boiler:
​
 • Small tubes176 x 51 mm (2.0 in)
Boiler pressure11.5 kgf/cm2 (164 psi)
Heating surface98.70 m2 (1,062.4 sq ft)
 • Tubes89.20 m2 (960.1 sq ft)
 • Firebox9.50 m2 (102.3 sq ft)
Cylinders1
Cylinder size410 mm × 610 mm (16 in × 24 in)
Valve gearStephenson
Performance figures
Maximum speed75 km/h (47 mph)
Tractive effort72.1 kN (16,200 lbf)
Career
OperatorsGyeongbu Railway
Temporary Military Railway
Chosen Government Railway
Korean National Railroad
Korean State Railway
ClassSentetsu: プレイ
KNR: 푸러1
KSR: 부러하
Number in classGR: 18
TMR: 52
Sentetsu: 70
Numberssee text
Delivered1901, 1906

In all, Sentetsu owned 227 locomotives of all Pure classes, whilst privately owned railways owned another 52; of these 279 locomotives, 169 went to the Korean National Railroad in South Korea and 110 to the Korean State Railway in North Korea.[2]

Description

The first 18 Prairie-type locomotives delivered to Korea were built for the Gyeongbu Railway by the Baldwin Locomotive Works of the United States,[3] with the first units arriving in 1901; they were numbered simply 1 through 18. A further 52 were delivered in 1906 to the Temporary Military Railway, of which 48 were assigned to the Gyeongui Line and four to the Masan Line.[4] These were delivered from Baldwin in knockdown form, and were assembled in Korea by the Gyeom-ipo and Incheon Shops.

The Gyeongbu Railway was nationalised to create the Chosen Government Railway on 1 July 1906, and the Temporary Military Railway was absorbed by Sentetsu on 31 August 1906, and all 70 of these locomotives entered service with Sentetsu.[4] Seven were subsequently transferred to private railways,[4] though all but one eventually returned to Sentetsu. They were used by Sentetsu on both passenger and freight trains all over Korea. From 1925, a number were rebuilt to Pureshi class for operation with domestic lignite.[5] 24 Purei-class locomotives remained unrebuilt, and these were numbered 221 through 254. Only 23 were left in service at the time of Sentetsu's 1938 general renumbering; these were renumbered プレイ1 through プレイ23 at that time.[6]

YearNumberManufacturerOriginal OwnerNotes
190118BaldwinGyeongbu Railway
190552BaldwinTemporary Military RailwayAssembled in Korea

Postwar

After the Liberation and partition of Korea, they were divided between North and South, but the specifics of which engine went where are unclear.

Korean National Railroad 푸러1 (Pureo1) class

At least four Purei-class locomotives ended up with the Korean National Railroad in the South after the division of Sentetsu's motive power following the partition of the country; these were designated 푸러1 (Pureo1) class by the KNR.[6]

Known KNR 푸러1-class locomotives
Running number
KNRSentetsu (1938–1945)Sentetsu (1918–1938)OriginalBuilderYearNotes
푸러1-11プレイ11プレ231TMRBaldwin1906Operational in 1954
푸러1-14プレイ14プレ234TMRBaldwin1906Derelict by 1953
푸러1-17プレイ17プレ237TMRBaldwin1906Derelict by 1953
푸러1-21プレイ21プレ241TMRBaldwin1906Operational in 1954

Korean State Railway 부러하 (Purŏha) class/1100 series

The locomotives taken over by the Korean State Railway in the North were initially designated 부러하 (Purŏha) class; they were later renumbered in the 1100 series. The total number, their service lives and subsequent fates are unknown.

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gollark: Except it's addition.
gollark: <@563866872702042132> I already did the calling-is-multiplication thing.
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gollark: (this applies after all the legacy `os.loadAPI` stuff loads anyway)

References
  1. Colvin, Fred H. (1906). The railroad pocket-book: a quick reference cyclopedia of railroad information. New York, Derry-Collard; London, Locomotive Publishing Company (US-UK co-edition). p. L‑9.
  2. "North and South Korea Steam Locomotives". 20 April 2004. Archived from the original on 20 April 2004.CS1 maint: BOT: original-url status unknown (link)
  3. 푸러형 증기기관차(탱크식)를 알아보자. 2 December 2012 (in Korean)
  4. "プレーリー型タンク機関車". Archived from the original on 2017-08-26.
  5. Byeon, Seong-u (1999). 한국철도차량 100년사 [Korean Railways Rolling Stock Centennial] (in Korean). Seoul: Korea Rolling Stock Technical Corp.
  6. "Korean National Ry Class PR1 2-6-2T". donsdepot.donrossgroup.net.
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