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Industrial Structural & Mechanical Engineering | Dos Santos Engineering

HRSG Harp Replacement Engineering — Heavy Lift Support System for Gas-Fired Power Plant

Industry: Energy & Power (Gas-Fired)  |  Service: Lift Planning & Rigging Engineering, Structural & Mechanical Engineering The Challenge HRSG units are designed for approximately 20 years of service life, during which the harp tubes are exposed to high temperatures and corrosive conditions that cause leaking and efficiency loss. At this gas-fired power plant, six large […]

Cogen Power Plant Monorail Design for HRSG Harp Replacement

Industry: Energy & Power (Cogeneration)  |  Service: Lift Planning & Rigging Engineering, Structural & Mechanical Engineering The Challenge A cogeneration power plant required the removal and replacement of heat recovery steam generator (HRSG) harps. The project presented two distinct challenges: first, the harps came in a variety of sizes and geometries, making a single-design monorail […]

Coal-Fired Power Plant Monorail and Support System for Deaerator Replacement

Industry: Energy & Power (Coal-Fired)  |  Service: Lift Planning & Rigging Engineering, Structural & Mechanical Engineering The Challenge A coal-fired power plant needed to remove and replace a deaerator tank. A monorail support structure was required to execute the lift, but the available support conditions presented multiple constraints: the only overhead steel available was designed […]

Power Plant Monorail Engineering for Equipment Removal

Industry: Energy & Power  |  Service: Lift Planning & Rigging Engineering, Structural & Mechanical Engineering The Challenge A power plant needed to remove and replace aging equipment, requiring the design of two separate monorail structures to facilitate the lifts. Both monorails had to fit within tightly constrained spaces and work within the limits of existing […]

Power Plant Duct Support Analysis and Structural Reinforcement

Industry: Energy & Power  |  Service: Structural & Mechanical Engineering The Challenge A power plant was planning to address substantial wear in its exhaust system flue ducts by lining them with new protective liner plates. Before proceeding, the plant needed to understand the structural impact of the added liner weight on the existing support steel […]

Standard Muck Lifter — Tunneling Conveyor Engineering

Industry: Tunneling  |  Service: Conveyor Engineering & Analysis The Challenge Tunneling projects vary widely in duration — from less than a year to several years — and any muck lifting system must be able to relocate and adapt to successive tunneling sites. The engineering challenge was to develop a standard, modular high-angle muck lifting conveyor […]