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Peter Brotherhood 3.6 MW Steam Turbine Generator Set – Extensive Overhaul 2023–2024

KEY TECHNICAL DATA



Rated output: 3,692 kW

Steam inlet: 42 bar(a) / 480 °C

Turbine speed: 9,067 rpm

Generator: BRUSH 4,615 kVA / 6,300 V / 50 Hz

Extensive overhaul: 2023–2024

In operation until June 2026



POA to named end user country



COMPLETE TURBINE-GENERATOR SET



The complete unit remained installed and in normal industrial operation until June 2026.



Available as a complete turbine-generator installation with associated equipment.



EXTENSIVE OVERHAUL



2023–2024



TURBINE, GEARBOX AND GENERATOR OVERHAULED AND INSPECTED POST-OVERHAUL CONDITION CLASS A

MAJOR OVERHAUL CARRIED OUT IN 2023

FOLLOWED BY CONDITION MONITORING IN 2024



Turbine rotor high-speed balanced up to 9,067 rpm.

Extensive NDT inspections performed on critical components.

Follow-up measurements classified the complete turbine–gearbox–generator train in Condition Class A.



Peter Brotherhood 3.6 MW Steam Turbine Generator Set



Complete industrial steam turbine generator set originally supplied for power generation and steam extraction service.



The unit consists of a Peter Brotherhood geared extraction steam turbine coupled through a reduction gearbox to a BRUSH synchronous generator.



The turbine-generator set was in normal industrial operation until June 2026 and was taken out of service in very good operating condition.



A comprehensive overhaul was carried out in 2023–2024, making this unit an attractive opportunity for industrial power generation, CHP and steam process applications.



The equipment is currently available for inspection.



Extensive technical documentation, drawings and photographs are available.



Technical Data – Steam Turbine

Manufacturer: Peter Brotherhood Ltd., England

Type: Geared extraction steam turbine

Turbine frame: 13B

Rated output: 3,692 kW

Steam inlet pressure: 42 bar(a)

Steam inlet temperature: 480 °C

Extraction pressure: 12 / 16 / 18 bar(a), min. / normal / max.

Exhaust pressure: 0.65 / 2.2 bar(a), normal / max.

Turbine speed: 9,067 rpm

Generator speed: 1,500 rpm

Gearbox ratio: 6.045 : 1

Rotation: Counter-clockwise viewed from steam end

Control system: Woodward 505E Digital Controller



GENERATOR – TECHNICAL DATA

Manufacturer: BRUSH Electrical Machines Ltd., England

Type: Synchronous Generator

Frame Size: BJHW 45L.101/4

Contract No.: O1/61914A

Rated Output: 3,692 kW / 4,615 kVA

Terminal Voltage: 6.3 kV

Rated Current: 422.9 A

Frequency: 50 Hz

Speed: 1,500 rpm

Power Factor: 0.8

Enclosure: IP44

Applicable Standard: BS 5000 Part 99

Cooling: Water-cooled air cooler, fresh water

Cooling Water Flow: 5.4 l/s

Cooling Water Inlet / Outlet: 25 / 30.8 °C

Air Flow: 6.1 m³/s

Rated Air Inlet Temperature: 40 °C (25 °C cooling water inlet)

Year: 1994



Condition

Very good operating condition.



The turbine-generator set remained in normal industrial operation until June 2026.



The complete turbine-generator set underwent an extensive overhaul in 2023–2024.



Detailed maintenance and overhaul documentation can be made available to serious prospective buyers.



Control & Auxiliary Equipment

The turbine-generator installation includes extensive control, monitoring and synchronization equipment.



The equipment includes turbine monitoring and control panels as well as generator measurement and synchronization panels.



Turbine control system: Woodward 505E Digital Controller

Vibration monitoring: Sensonics monitoring system



Generator Transformer

Generator transformer and associated electrical equipment are available – final scope of supply to be confirmed.



Documentation

Extensive technical documentation is available, including:



General arrangement and foundation drawings

Turbine-generator technical documentation

Control and instrumentation documentation

Maintenance documentation

2023–2024 overhaul documentation

Additional detailed drawings and manuals available on request

Recent Overhaul & Condition – 2023–2024

GENERATOR



The BRUSH generator was included in the 2023 major overhaul and inspection of the complete turbine-generator unit. The generator was inspected and serviced, followed by alignment and vibration measurements as part of the complete rotating machinery train.



Following the overhaul, condition-monitoring measurements performed in January 2024 showed low and stable vibration levels. The generator was classified in Condition Class A, with no indications of developing faults.



STEAM TURBINE



The Peter Brotherhood Frame 13B steam turbine, gearbox and associated valves underwent an extensive overhaul and inspection in 2023. The turbine was dismantled, cleaned and inspected, including the rotor, turbine casing, bearings, valves and other critical components.



Extensive NDT inspections were performed. The turbine rotor magnetic-particle inspection found no defects, and inspections were also carried out on components including the turbine bearings, casing, control and trip-valve components.



The turbine rotor was professionally high-speed balanced by Howden CKD Compressors up to its nominal operating speed of 9,067 rpm. Final measured bearing-housing vibration levels were 0.282 / 0.277 mm/s RMS, compared with the permissible value of 0.450 mm/s.



Following the overhaul, the complete turbine–gearbox–generator train was returned to operation. Follow-up condition measurements in 2024 classified the turbine, gearbox and generator in Condition Class A.



Extensive overhaul, inspection, NDT, rotor balancing, alignment and condition-monitoring documentation & price is available upon request with named end user destination.



#varaok

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