Page 55 - Industrial Plants

Steam turbine retrofit

and life time extension

A complete engineering study with a root cause analysis has
identified the possible causes of the performance limitations and
has led to a retrofit solution to increase power output, efficiency,
reliability and availability

Edoardo Busato, Regional Sales & Service Manager, MENAT Region
De Pretto Industrie

e Pretto Industrie is an Italian
turbomachinery manufacturer. The “De Pretto Industrie applies a
company was established in 1885 customized and tailor-made approach
and for more than 80 years has been on all its projects, but at the same
part of leading global organizations. time making sure the resulting capital
DDe Pretto Industrie Is today an and operating expenditures are
Independent company acting as an Original Equipment minimized for the end-users
Manufacturer (OEM) for new steam turbine generator
sets up to 50MW but also as an independent Service
Provider (ISP) of any rotating equipment manufactured Case study
by any OEMs in the market, thanks to its reverse A major refinery in the Middle East region was
engineering capabilities and its technical dept of 30+ experiencing severe problems with 2 backpressure-
engineers covering all key domains (thermodynamic/ extraction steam turbines used to feed the refinery
construction/instrumentation/system). steam utilities lines as well as to generate power. DPI
De Pretto Industrie has extensive engineering proposed to the end-user to perform a complete
competence in repair and revamps of turbomachinery, engineering study with a root cause analysis to identify
developing customized solution for each product and the possible causes of such limitations and a retrofit
make. One stop solution provider for any rotating solution to increase power output, efficiency, reliability
equipment, repair in emergency situations, OEM- and availability.
equivalent warranties as well as cost and lead time The thrust bearing of those units had been the main
advantages are the main benefits we can provide our source of concerns since the initial installation, leading
customers with. Innovative thinking is applied to to frequent failures due to overheating, high vibration
manufacturing and upgrading of turbomachinery levels and, as a result, partial load operation with
control systems according to the highest market impacts on steam and power production. Thermal
standards, latest normatives and best practices. efficiency and reliability of the units were also affecting

IndustrIal Plants - May 2022
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