 Beauharnois SF6 station
Hydro-Québec
In 1995, after several years of study and preliminary work, Hydro-Québec initiated a major overhaul of the power station and its turbine groups. In partnership with other consultants, CIMA+ was responsible for all the engineering activities.
CIMA+ primarily did the engineering work for the:
1. installation of two new 120 kV starting and switching stations
2. restoration of the 13.8-120 kV station on the upstream deck, including building oil recovery basins and firewalls
3. complete modernization of the control, protection, instrumentation and automation systems on several of the station's 36 groups
4. running 120 kV cables between transformers located on the station's upstream deck and the new SF6 stations to the east, on the ground, and to the west, in the station's building extension
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 Appalaches station
Hydro-Québec
Over the years, our control and protection specialists have carried out hundreds of activities at Hydro-Québec stations.
The Appalaches station is an example of how CIMA+ has completely modernized the equipment, replacing electromechanical protection with digital protection, and building the controls into a totally computerized system.
All documents were developed with strict adherence to client standards.
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 Saint-Maxime station
Hydro-Québec
CIMA+ was involved in the major overhaul of the station, including:
- replacement and addition of 120 kV devices
- addition of three 120 kV bays
- complete replacement of the 25 kV equipment
- addition of 12 condenser banks
- relocation of six 120-25 kV transformers
- replacement of auxiliary services
CIMA+'s role consisted of:
- developping plans, specifications and bills of materials for electrical switchgear
- producing the design layout and plans using Catia 3D software
- performing the calculations needed to execute the project:
- bus calculations
- sag calculations
- lightning protection calculations
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 Leman station
Hydro-Québec
Converting the Shawinigan 2 station to 120 kV justified the need to change the entire power distribution system for the Shawinigan 2 and 3 and Des Hêtres stations, the power supply for several Hydro-Québec clients and supply to other Hydro-Québec stations up to 120 kV.
In the end, this new 120 kV integration station was expected to contain 14 120 kV lines and 18 switches. The decision was made to install a substation shielded with SF6 gas, as there was not enough room for a conventional station on the platform.
CIMA+ prepared the call for tender documents for the prepurchase of equipment for the interior SF6 insulated station. CIMA+ also did all detail engineering for the project, including the building and substation.
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 Saraguay station (315-25 kV)
Hydro-Québec
This project involved extending and modifying the Saraguay station in Ville St. Laurent, and adding another 315-25 kV section (300 m by 150 m). CIMA+ primarily provided the following services:
- production of a 3D model using the Catia software for adding two315-25 kV transformers, including a new 315 kV yard and additional 25 kV branches with reactance
- 3D modelling (Catia) of foundations, structures and electrical equipment
- design of equipment foundations, supports for switchgear and 25 and 315 kV portal frames (110 columns, 150 supports and 220 bases)
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 SARAGUAY STATION - CONTROL BUILDING
Hydro-Québec
Built in 1957, the control building was designed according to earthquake resistance standards in use at that time. Given the significance of the building and the need for global repairs, a study aimed at bringing the building structures up to current standards was required.
CIMA+ completed a feasibility study for Hydro-Québec in order to determine structural repair solutions. In addition, CIMA+ was asked to conduct detailed engineering and monitoring of the structural, mechanical and electrical aspects of the works, and was also responsible for architectural aspects (Architect was sub-contracted to CIMA+).
The Saraguay station building is situated in the North-Western part of Île de Montréal, between Henri-Bourassa and Gouin. The existing 32.5 m x 26.9 m building is a one story, non-reinforced brick building, whose main function is to contain station control equipment. The basement serves as storage, cable pulling room and battery room. A control room occupies half of the ground floor, while the remaining floor surface is divided into work rooms, telecommunications room, a workshop, a kitchen and restrooms.
At the project stage, all masonry load-bearing components were removed and replaced by a braced metal framework.
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 ABB Syncrude UE-1 station
CIMA+ was asked to design modular electrical sub-stations for the petroleum industry. The project included buildings, medium voltage transmission at 13.8 kV, 5 kV and low tension at 600 V, variable frequency controllers, harmonic filters, AC and DC services, supervision by PLC and operator interface, as well as HVAC units.
Part of the challenge involved the monitoring and technical verification of about 5,000 engineering documents, while coordinating the corrections and changes required with the client, SYNCRUDE UE-1, and the various equipment suppliers.
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 69 kV Brilliant station
ABB
After modernizing four turbine generator groups at the Brilliant station, the owner had to build a new sub-station to handle the increase in the hydropower generating station's capacity.
A Ring Bus sub-station was built with four incoming transformer connections and four outgoing lines.
CIMA+ was responsible for the civil and structural detail engineering, electrical installation, control and protection. We also helped the owner with commissioning.
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 Sheikhupura station
Pakistan
In the framework of its contract to lease seven TM 2 500 groups to Water and Power Development Authority (WAPDA), General Electric Co. had to build a new 11.5-132 kV station. The station was meant to connect the generating station's seven groups to the existing Sheikhupura station, located nearby. As this was a temporary facility that had to be up and
running very quickly, pre-used equipment was employed.
CIMA+ was responsible for plans, specifications and detail engineering, as well as for the bills of purchase for long lead-time equipment.
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 Chomedey station
Hydro-Québec
The seismic risk study of the 735 kV loop and Greater Montreal source 315 kV stations done by TransEnergie (HQ) in 2003 confirms the strategic nature of the Chomedey station's 315-120 kV control building.
CIMA+ was initially hired to do the preliminary study, following which two major non-compliances regarding earthquake resistance were identified (lack of ductility and weakness in the roof diaphragm). Global rebuilding solutions were pinpointed to correct these anomalies. The
solutions had to make it possible to overhaul the entire building without interrupting operations.
CIMA+ then provided the detail engineering, supervised the structural, mechanical and electrical work, and assumed responsibility for the architectural aspects (subcontracted).
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 Sarnia 230 kV station
ABB
This project involved building the cogeneration plant station that combined the power generated by four industries. The 230 kV station was built on a lot close to the industries. CIMA+ primarily completed the following:
- electrical installation
- electrical schematics (8 breakers with current and potential transformers, switches in a looped 230 kV configuration)
- structural engineering
- layout of foundations
- positioning and calculation of foundation reactions
- engineering drawings for electrical equipment supports (300 bases and supports)
- engineering drawings of portal frames (various heights up to 27 m high by 32 m wide)
- control and protection
- design and preparation of schematics and all engineering documents
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 Roussillon station
Hydro-Québec
In the early 1990s, CIMA+ undertook the engineering for Hydro-Québec for the new 315-25 kV Roussillon station, including switchgear, controls, civil and structural engineering work.
At that time, two transformers and two outgoing 25 kV line connections were installed.
In 2005, CIMA+ was asked to do the engineering work to add a 315 kV section, an outgoing 25 kV line connection, transformer, oil separator, underground conduits, an additional oil collector basin, firewalls and to modify the existing oil separators.
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