Boiler_Turbine _Generator

1. FAILURES IN STEAM
TURBINE AND
SOLUTIONS
Simple Turbines, Superior by Design!
turtleturbines.com

2. About the Company
Introduction
We believe, a dependable Smart Power Source opens up radical business
avenues for our Customers.
Our Customers benefit immensely by generating their own Onsite
Distributed Power which also keeps our planet Clean.
We craft our Products from First Principles, challenging the old dogmas.
We Build Great Products.
turtleturbines.com

3. turtleturbines.com
Steam Turbine is the power generating equipment. If steam turbines shut down for a
longer duration it becomes a huge loss of power and it also affects on production
rate.
Blades failure – Blades generally failed due to crack which is the effect of fatigue,
corrosion, pitting, and creep.
There are three main causes of blade failure – The cause of failure on the blade is
influenced by several factors such as fatigue, creep, oxidation, corrosion, erosion, and
surface degradation due to working at high temperatures.
Bearing failure – Bearing failure occurs due to abrasion, bond failure, cavitations
erosion, corrosion, fatigue, overheating, surface wear, structural damage.
Rotor Failure – This happens due to various stresses that can occur on the rotor.
Various stresses can cause rotor failures – Thermal, magnetic, dynamic,
environmental, mechanical, and residual. When installed and operated as designed,
the stresses remain within tolerance and the motor operates properly for years.
There are many failures that occur in the steam turbine at running condition.
Following are somemajor failures in a steam turbine.

4. turtleturbines.com
Steam Turbine Rotor Vibration Failures – If the rotor gets imbalanced it increases
vibration. Vibration in the rotor also occurs due to casing because of temperature
fluctuations.
Blade Rubs – Running in the sealing of a high-pressure rotor caused bending of
rotor and blade tip rubs.
Casing misalignment – Rotor bending also occurs due to casing misalignment
between two shafts of an integrated rotor can cause an eccentricity of the mass
center of the rotor, and this eccentricity at high rotational speed will produce a
centrifugal force in the radial direction, causing bending of the rotor.
Failures can be caused by poor maintenance also.

5. turtleturbines.com
Stresses on blades can be reduced by making the blading stronger, using better
design and quality, and by adding damping by means of caulking strips and lashing.
Bearing failures can be prevented by using the correct bearing design. Store bearings
actively. Install bearings properly.
Lubricate timely Rotor failures – To prevent rotor failure, do not exceed the maximum
speed and maximum mass limits for the rotor.
Do not leave the centrifuge until the full operating speed is reached and appears to
be running safely without incident.
Stop centrifuge immediately if you notice any unusual noises or shaking.
To avoid all the above failures, the following prevention needs to take.

6. turtleturbines.com
Clean the centrifuge daily or at least weekly. Remove the rotor and any sample or
container holders.
Interior cleaning includes the interior bucket specimen holder, rotor, and
supports.
To avoid rotor bending, the turbine should remain on turning gear until the high-
pressure casing temperature is below 150C and the oil temperature is below 75C.
Turtle Turbines has a well-trained and dedicated team for the maintenance of
steam turbines.
Turtle Turbines provide solutions for all types of failures in the steam turbines.

7. turtleturbines.com
FAILURES IN STEAM TURBINE AND SOLUTIONS

8. Thank you!
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