MACEK POWER &

TURBOMACHINERY ENGINEERING

TEXAS REGISTERED ENGINEEERING FIRM F-9789

FRIENDSWOOD, TEXAS, USA


NEWS


2017 AUGUST

ROTOR WELD REPAIR AUDIT

On behalf of the end user of a 25 MW steam turbine, Macek Power traveled to the OEM factory to observe and provide technical support for welded reconstruction of a steam turbine rotor wheel integral to the shaft. The OEM had not previously attempted such a repair.


2017 JULY

GAS TURBINE FAILURE ROOT CAUSE ANALYSIS

On behalf of its insurance adjuster client, Macek Power was involved in a RCA (Root Cause Analysis) regarding damage suffered by a Pratt & Whitney FT8-3 gas turbine engine.   More specifically, multiple stationary and rotating vanes in the gas generator section of the engine were affected by coating loss, vane material loss, and reduced operating efficiency.  As of 2017 October, the RCA investigation remains in progress.


2017 JUNE

35 MW STEAM TURBINE RE-RATE STUDY 

Macek Power identified the potential to reduce fuel cost by more than $1,000,000 annually by de-rating the turbine because of substantial permanent operational changes in both demand and extraction flow requirements. The study consisted of steam path reverse engineering, computer model development (turbine and complete power cycle), and performance simulation. Study results guided specification of proposed steam path modifications.


2017 APRIL

STEAM PATH AUDIT

Macek Power completed a steam path audit of a Siemens 35 MW extraction condensing steam turbine in electrical power generation service.  The audit consisted of visual inspection of stationary and rotating blade vanes, along with assessment of labyrinth seal condition.  Subsequently, recommendations for refurbishment, replacement, or return to service were made based on cost/benefit analysis in terms of turbine efficiency reclamation.  Images below are of the rotor and one of the diaphragms.


2017 MARCH

LUBE OIL CONDITON STUDY

A lube oil condition study was completed by Macek Power for a geothermal power producer located in the desert southwest of the USA.  The motivation for the study was frequent screw expander bearing failure, and it included examination of oil physical characterstics such as water content, particulate contamination, dilution by the working fluid (refrigerant), and viscosity.  Viscosity was determined experimentally as a function of temperatue under the condition of actual pump dischrage pressures.  Testing was done by a Houston area laboratory under the direction of Macek Power.  Results were interpreted by Macek Power.  Images below are of sample collection vessels and the viscosity testing apparatus.


2017 FEBRUARY

10th ANNIVERSARY

2017 is our 10th anniversary year.  Macek Power wishes to express appreciation and gratitude to all its clients, friends, and associates who over the last 10 years, have played a part in our success.  We would not have made it this far without you.  We thank you all for your support and patronage.