Lovejoy Controls Logo Exclusive Middle East Engineering Partner: Advanced Control Company

Steam Turbine Controls, Actuation &
Ultrasonic Monitoring Systems

Manufactured by Lovejoy Controls Corporation (Waukesha, Wisconsin, USA) since 1978. ACC delivers turnkey control modernization, replacing failure-prone EHC hydraulics with roller-screw electric actuators, direct electromagnetic trip (EMA) systems, and 100% digital ultrasonic rotor deflection monitoring (UDP).

Steam Turbine Control Upgrade Packages

Engineered retrofit packages that eliminate lubricating and synthetic EHC hydraulics from speed modulation and trip mechanisms across API-611 general purpose, API-612 special purpose, and power generation feed pump turbines.

API-611 Control Package
API-611 General Purpose

API-611 General Purpose Steam Turbines

For Terry, Worthington, Elliott, Dresser-Rand, and Turbodyne turbines. Replaces chronic weak links: mechanical overspeed bolts and linkage-driven governor valves.

  • PKG 2.1: Mechanical overspeed trip upgrades to electronic 1oo2 SIL precision with zero trip bolts, latches, or oil dependencies.
  • PKG 2.2: High-precision roller screw electric actuator retrofit replacing mechanical/hydraulic valve positioning.
  • PKG 2.3: Complete speed governor upgrade to fully electronic simplex digital governors.
API-612 Special Purpose Package
API-612 Special Purpose

API-612 Special Purpose Steam Turbines

For GE, DeLaval, Shin Nippon, Siemens, Elliott, and Westinghouse multi-valve units. Eliminates contaminated lube oil servo-motor failures.

  • PKG 3.1: 2oo3 SIL precision electronic overspeed trip system with online signal injection and diagnostic self-monitoring.
  • PKG 3.2: Heavy-duty roller screw electric actuator upgrade replacing hydraulic servomotor positioning.
  • PKG 3.3: Triple-modular redundant 2oo3 digital governors engineered for direct electric actuator compatibility.
EHC Skid Removal Comparison

The "Oil-Less" Revolution: Direct Electromagnetic Actuation (EMA)

Why maintain an entire high-pressure EHC skid, hydraulic pumps, coolers, and flammable synthetic oil just to position steam turbine valves?

Lovejoy's Electro-Magnetic Actuator (EMA) is integrated directly into emergency stop/trip valves and Trip Throttle Valves (TTV). Combined with Lovejoy's integrated 2oo3 Trip Manager and Electric Reset Controllers, it completely removes hydraulic dependency from the emergency safety loop.

✓ Replaces: High-pressure oil skids, servomotors, E/H converters, mechanical trip latches.
✓ Installs: Redundant electric actuators, direct EMA trip units, 2oo3 Trip Manager, electric reset controllers.

Steam Turbine Ultrasonic Monitoring Systems

The first major sensing breakthrough in turbine supervisory instrumentation since 1965: 100% digital networked architecture powered by Ultrasonic Displacement Probes (UDP).

Why Status-Quo Bearing Probes Fail on Flexible Rotors

Conventional 70-year-old eddy-current proximity probes only measure shaft position at the journal bearings. Inside hydrodynamic and tilting pad bearings, shaft movement is physically damped and clamped by the oil film.

As proven in EPRI study 1010214, virtually all turbine steam seal impact damage occurs during cold and warm startups without any supervisory system detection, causing enlarged clearances and hundreds of thousands of dollars in lost fuel efficiency.

The UDP Solution (Rotor Deflection Monitor - RDM)

Lovejoy's Ultrasonic Displacement Probes (UDP) directly measure actual mid-span rotor bow and thermal deflection without shaft interference from dents or nicks, providing clear Go / No-Go startup advisories to plant DCS operators.

Lovejoy Ultrasonic Monitoring System
100% Digital • Single Network Cable

Rotor Deflection (RDM)

Direct shaft bow detection preventing steam seal impact during startup roll.

Eccentricity Monitoring

High-accuracy shaft eccentricity measurement without analog drift.

Multi-Plane Vibration

Digital displacement, phase, and harmonics analysis without EMI disturbance.

Axial / Thrust Movement

Precise setting and monitoring of thrust bearings under dynamic load.

Networked Simplicity

Eliminates miles of analog shielded cable, marshalling racks, and filter cards.

Engineering & Field Support Services

Turnkey engineering execution delivered by ACC across the Kingdom, backed by Lovejoy's Waukesha test facility.

01

Turbine Controls Evaluation

On-site audit of obsolete OEM controls, speed/load hunting, oil contamination, trip reliability, and part obsolescence with actionable engineering reports.

02

Retrofit Engineering & FAT

Complete electrical and mechanical mounting adaptation. 100% pre-assembly in test shop with load and speed feedback simulation under application conditions.

03

In-Place Dynamic Balancing

Field rotor trim balancing under actual thermal and steam load conditions using portable UDP deflection kits—avoiding costly off-site shop balancing delays.

04

Commissioning & Training

Supervised mechanical installation, hot commissioning, system drawings, renewal parts catalogs, and comprehensive plant maintenance training.

Lovejoy Controls Project References

Proven across defense, nuclear, fossil, and petrochemical applications worldwide.

Saudi Aramco Turbines Oil & Gas
Saudi Aramco | Saudi Arabia

API-611 & API-612 Process Turbine Modernizations

Mechanical governors and overspeed bolts prone to speed oscillation and trip failures.

Electronic simplex & 2oo3 digital governors, roller-screw electric actuators, and SIL-precision overspeed systems.
U.S. Navy Aircraft Carriers Naval Defense
U.S. Navy | Nimitz-Class Nuclear Fleet

Nuclear Aircraft Carrier Feed Pump Turbines

Feed pump drive turbines requiring ultra-high reliability under severe mission demands.

Fleet-wide digital control retrofits eliminating hydraulic vulnerabilities and reducing routine maintenance.
Zion Nuclear Station Nuclear Power
Commonwealth Edison | Zion Nuclear Power Station

Main Feed Pump Turbine Control Modernization

1970s hydraulic feed pump turbine controls suffering chronic seizing and load reduction trips.

Foundational digital control system retrofit that pioneered modern electric turbine actuation.
Ottertail Power Fossil Power
Ottertail Power | Big Stone Station

Boiler Feed Pump Turbine Control Upgrade

Legacy mechanical/hydraulic controls causing high maintenance and unrepeatable trip points.

Comprehensive digital governor and electric valve positioning package.

Advanced Control Company (ACC) in Saudi Arabia

As officially listed on Lovejoy Controls Corporation's website: ACC is the dedicated representative for Lovejoy technologies across the Middle East. Headquartered on King Abdulaziz Road, Dammam, KSA.

Inquiries: info@advancedgulf.com | Mobile: +966 50 566 4492