MRO PT Pratama Nusantara Sakti Turbine

STEAM TURBINE GENERATOR 22MW MAJOR OVERHAULING

"TURBO DM: Precision Maintenance for Reliable Power Generation"

TURBO DM is a trusted expert in power plant maintenance, outage management, and field services, ensuring the optimal performance of power generation assets. With extensive experience in geothermal, steam, gas, and hydroelectric power plants, we provide solutions for facilities ranging from 5MW to 1000MW.

Our latest project involves a major overhaul of a Siemens SST 300 22 MW steam turbine, where we’ve uncovered significant rotor damage, scaling, and erosion due to wet steam exposure. This reinforces the critical role of scheduled maintenance in preventing costly failures and extending equipment lifespan.

"PT. Pratama Nusantara Sakti is one of the private sugar companies in South Sumatra operates a biomass power plant with a capacity of up to 22 megawatts, utilizing sugarcane waste as fuel.
Need expert maintenance support? Call us anytime – we're ready 24 hours to keep your power plant running smoothly."

Based on Power Plant Maintenance Standards & API (American Petroleum Institute) guidelines:
 

Lifting and securing the Siemens SST 300 steam turbine rotor for inspection, following API 687 and OEM handling guidelines. Visible scaling and corrosion suggest prolonged exposure to wet steam conditions, necessitating a full non-destructive testing (NDT) assessment to determine structural integrity."

"On-site condition assessment in accordance with API 612 and industry best practices. Engineers perform visual inspection and preliminary dimensional checks before proceeding with dye penetrant testing (PT) and ultrasonic testing (UT) to detect subsurface defects on the rotor blades and disc interfaces."

"Detailed rotor inspection reveals extensive pitting and erosion on the blade surfaces, likely due to prolonged moisture exposure. In compliance with API 687 rotor repair standards, options such as metal rebonding, blade tip restoration, and rotor rebalancing are being evaluated."

"Advanced inspection following API 610 and OEM recommendations exposes deep pitting and intergranular corrosion on turbine blade leading edges. Severe degradation may require in-situ weld repair, recoating, or complete rotor replacement to restore operational efficiency and prevent catastrophic failure."