This 82.5 MW turbine rotor was built by the specialists of the
power plant repair company. To buy this turbine outside, 900 billion Rials
(about three million Euros) had to be allocated to provide the required
currency. By building this rotor, all the spent expenses have decreased to 350
The nominal speed of this turbine is three thousand revolutions per
minute, the number of blade stages is 19 rows, the number of blades is 2539,
the nominal inlet steam pressure is 86.18 bar and the nominal inlet steam
temperature is 510 degrees Celsius.
The operating time of this turbine rotor is 6 months and it can
withstand steam temperatures above 500 ° C. Also, in the construction of this
turbine, 75,000 man-hours of operation have been planned and implemented in the
fields of metallurgical engineering, mechanics and manufacturing, procurement,
machining, prefabrication, non-destructive testing and dimensional control.
The previous manufacturer of this rotor was General Electric
Company of America. Despite the lack of access to construction documents,
relevant drawings and the possibility of contacting the manufacturer, the
engineering team of Iran Power Plant Repair Company was able to build the rotor
in the power plant by reverse engineering to build mentioned turbine rotor inside
Mohsen Tarztaleb, CEO of Iran Thermal Power Plants Holding Company,
emphasizing that this rotor was built at one-third the cost of its foreign
model, said: Iran Power Plant Repair Company is ready to repair or build a new
rotor in all 129 power plants and 583 thermal power generation units of the
country if a rotor has a problem.
Also, Reza Ardakanian, Minister of Energy of the Islamic Republic
of Iran, described the construction of the first Iranian steam turbine rotor as
one of the manifestations of the high capacity of human resources in the
country and added: This action is one of the windows of light towards a secure future
with prosperity and development not only in our country but also in the region.