Ok22 is the name for a Polish

Poland

Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

 passenger steam locomotive

Steam locomotive

A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...

 used by PKP

Polskie Koleje Panstwowe

is the dominant railway operator in Poland.The company was founded when the former state-owned operator was divided into several units based on the requirements laid down by the European Union...

. It was the first locomotive designed in Poland after World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

, so the design work was done jointly with Hanomag

Hanomag

Hanomag was a German producer of steam locomotives, tractors, trucks and military vehicles. Hanomag first achieved international fame by delivering a large number of steam locomotives to Romania and Bulgaria before World War I....

, based on the German class P8 (Polish

Poland

Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

 PKP class Ok1

PKP class Ok1

Ok1 is the Polish designation of a Prussian steam locomotive, the Prussian P 8, used on Polish State Railways. After the end of World War I, 190 Class P 8 engines were handed over as a reparation to Poland, where they were re-designated as Class OK1 locomotives...

)

Introduction

The production lasted from 1923 when the first five engines were built in Germany Hanomag

Hanomag

Hanomag was a German producer of steam locomotives, tractors, trucks and military vehicles. Hanomag first achieved international fame by delivering a large number of steam locomotives to Romania and Bulgaria before World War I....

 until 1928 when serial production was started in Fablok

Fablok

Fablok is a Polish manufacturer of steam locomotives, based in Chrzanów. Until 1947 the official name was The First Factory of Locomotives in Poland Ltd. , Fablok being a widely used syllabic abbreviation of Fabryka Lokomotyw. It is now named "BUMAR - FABLOK S.A. "...

 in Chrzanów

Chrzanów

Chrzanów is a town in south Poland with 39,704 inhabitants . It is situated in the Lesser Poland Voivodeship and is the capital of Chrzanów County.- To 1809:...

. The first Polish-built locomotive (OK22-6) was ready on December 31, 1928. Polish versions of the locomotive bore some improvements and changes compared with German ones, and were similar to PKP class Ty23. OK22 locomotives were the first on the PKP to be equipped with electric lights.

Present day

Only two examples have survived to this day. Ok22-23 in Jaworzyna Śląska and Ok22-31 in Wolsztyn. Ok22-31 is still operational. It ran until 1997, and after retirement became a stationary exhibit. In 2004 the machine was restored to the working order.