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Diesel power plant

Hydro-Québec, Îles-de-la-Madeleine

Hydro-Québec wished to replace its existing plant that had become less efficient. The GLV Group assigned CIMA+ the task of the detailed architectural design, building electrical and mechanical engineering, process mechanics and civil engineering work.

We were also awarded the Siemens Electric contract for electrical installation, control and protection of the power plant.

This new power plant has six diesel units coupled with 11 MW alternators.

CIMA+ also completed the engineering study for the replacement of the three diesel generators, with total capacity of 750 kW, providing current constantly to the isolated network on Entry Island.

Use of the emergency generator for peak load management

City of Pointe-Claire, Quebec

This project used the emergency generators linked to the Hydro-Québec network to improve peak period management during the winter.

CIMA+ has completed many new installations and installation conversions of emergency generators for the management of peak electricity demand periods. These installations operate in parallel on the network or in a closed transition, such as the installation completed for the City of Pointe-Claire.

Increase capacity of the thermal power plant

JL De Ball, Granby

The plant was furnished with two serpentine boilers, each 350 hp, that had become obsolete. In terms of their capacity, the steam production limit of 23,000 lb/hr barely managed to handle the peak loads of the plant. Given that a new continous tint line was to be added, it was decided to modify the boiler.

As the available construction budget was restricted, the option of installing a used boiler was considered. For CIMA+, the project included: 

• installation of a new 24,000 lb/hr boiler in a very restricted space
• installation of an economizer for pre-heating the water supply
• provision for the future installation of a direct contact heat recovery system
• increasing the capacity of auxiliary systems

The work was completed before the new process line was commissioned.

600 MW gas power station

Confidential client

Our client wanted to boost the capacity of its conventional station by 600 MW. The station was fuelled with nº6 heavy fuel oil.

CIMA+ did a preliminary study that showed that one of the options was to upgrade the station by adding four 50 MW gas turbines, one for each existing unit, which would be equipped with heat-recovery boilers.

The solution recommended to the client also planned to have each gas turbine drive a generator. The heat recovered from the gas turbine exhaust would then be used to produce high-pressure steam in the heat-recovery boilers. The steam would then be transmitted to existing gas turbine units to boost power, which would increase the overall generating station power to 860 MW.

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