Notes: Keeyask is about 1000 Kilometers North (by all weather road) of Winnipeg. Winnipeg is a Major center with a population of 700,000 and is the Capital of Manitoba.
Kettle
1,220 MW
1,330 MW
Limestone
980 MW
Long Spruce
1,485 MW
Conawapa
200 MW
Wuskwatim
695 MW
Keeyask
Station Size Comparison
Future Plant
Presenter
Presentation Notes
Development Partnership
• Keeyask Hydropower Limited Partnership consists of four limited partners and one general partner
• The Limited Partners are:
– Manitoba Hydro
– Cree Nation Partners Limited Partnership – controlled by Tataskweyak Cree Nation (TCN) and War Lake First Nation (WLFN)
– York Factory First Nation Limited Partnership – controlled by York Factory First Nation (YFFN)
– Fox Lake Cree Nation (FLCN) Keeyask Investments Inc. Project – controlled by FLCN.
Each Unit produces enough electricity to supply 65,000 homes
•Keeyask G.S.
Presenter
Presentation Notes
Notes: The Keeyask GS is a 695 MW generating station that would be constructed at Gull Rapids located on the Lower Nelson River upstream of Kettle Generating station and downstream of Split Lake. It is located 31 km east of Gillam. A north and south access road will be constructed to site shown on the map. The plant would have a discharge capacity of 4000 cms which is smaller than the other plants on the Lower Nelson which have capacities of 5000 cms or more. The plant will have 7 units that will operated at an average head of around 18m and each would generate enough electricity for 65,000 homes. The reservoir will be formed by flooding roughly 45 km2 which is shown on the map in dark blue.
Gull Rapids
3.7 km / 12 meter drop
Presenter
Presentation Notes
Red Lines indicate the Alignment of the Principle structures.
Principal Structures 8
Presenter
Presentation Notes
Notes: This rendering shows the layout of the principle structures at Keeyask looking north with the river flowing from left to right. The powerhouse is located on the north side of the river and is located about 1mile from the Spillway separated by the central dam. There will be short dams on the north and south sides also. Keeyask would be constructed in a very flat area so it requires extensive dyking (about 23 km total). The principal structures of the Keeyask GS are: North & South dykes along the upstream shorelines (22.7 km combined length). North dam that connects the north dyke to the powerhouse (99 m long). The powerhouse complex constructed on the north side of the river, including the intake and tailrace channels that will be excavated. Central Dam that will connect the powerhouse to the spillway (1,600 m long). Spillway structure located on the north side of the Gull Rapids south channel, including the intake and tailrace channels. South dam that connects to the south dyke (565 m long).
Power House Complex Powerhouse: Statistics Rated Gross Head..................................................................19.3 m Design Head...........................................................................18.3 m Number of Units...............................................................................7 Turbine Type...................................................Fixed Blade Propeller Turbine Rating (at rated head).............................. (99 MW) per unit Turbine Rated Discharge..................................................556 m3/s
Powerhouse Complex contains the turbines, generators and associated control equipment, including the intake, scroll case and draft tube
Each Unit produces enough electricity
to supply 65,000 homes
Presenter
Presentation Notes
Spillway SPILLWAY: Type: Concrete Overflow Seven Bays with motorized vertical lift gates Bridge for permanent roadway built on top of spillway Provides a diversion channel during construction Provides overflow discharge capacity during operation
Presenter
Presentation Notes
Capacity = Designed for Probable Maximum Flood = 12,700 cms
Earth Structures - Dams NORTH, CENTRAL AND SOUTH DAMS Would be constructed through Gull Rapids Dams would be founded on bedrock Zoned earth fill embankments consisting of an impervious core with granular and crushed rock filters and outer rockfill shells The elevation of the dams’ crests would range between 162.0 m (531.5 m) and 162.6 m (533.5 ft) The maximum height of the dams would range between 19.5 and 28.0 m (64.0 ft and 91.9 ft).
Central Dam 1600m
South Dam 565m
North Dam 99m
Powerhouse
Spillway
Central Dam
South Dam
North Dam
Presenter
Presentation Notes
North, Central, and South Dams As shown in Figure, three dams (the north dam, central dam, and south dam, would be constructed through Gull Rapids. Dams would be zoned earth fill embankments consisting of an impervious core with granular/crushed rock filters and outer rockfill shells. The elevation of the dams’ crests would range between 162.0 m (531.5 m) and 162.6 m (533.5 ft). The maximum height of the dams would range between 19.5 and 22.0 m (64.0 ft and 72.2 ft). Typical cross sections for the dams are shown in Figure 8. The earth dams would generally be founded on bedrock. Foundation grouting would be used to prevent seepage under the dams. Seepage through the dams would be intercepted by a system of granular filters and drains.
Earth Structures - Dykes
Powerhouse
Spillway
North Dyke
South Dyke
North Dyke
NORTH AND SOUTH DYKES Earth fill dykes with a total length of about 23 km (14 miles) would be located along the north and south sides of the river to contain the forebay A roadway would be constructed on top of the dykes and between the sections of dykes for inspection and maintenance The crest of the dykes would vary between elevations 161.8 m (530.8 ft) and 163.0 m (534.8 ft) The north dyke and south dyke would have maximum heights of about 20 m (66 ft) and 13 m (43 ft) respectively.
Presenter
Presentation Notes
A series of earth fill dykes with a total length of about 23 km (14 miles) would be located along the north and south sides of the river to contain the forebay. Depending on the topography and foundation conditions, the design and earth materials used would vary along the dykes. The dykes would primarily be zoned impervious core embankment dykes. Protective shells of crushed rock and riprap would be applied where required. Where the ground surface rises above the required freeboard level between the dyke sections, a road would be constructed to provide access. The crest of the dykes would vary between elevations 161.8 m (530.8 ft) and 163.0 m (534.8 ft) but may be somewhat higher in areas where the foundations are expected to settle over a period of time. The north dyke and south dyke would have maximum heights of about 20 m (66 ft) and 13 m (43 ft) respectively. Typical cross sections for the dykes are shown in figure.
Material Transportation
PROPOSED KEEYASK GS
THOMPSON
GILLAM
Presenter
Presentation Notes
An all weather provincial highway runs from Winnipeg to the construction site. The highway is undivided, two-way traffic, paved to Thompson. The highway is gravel from Thompson to Keeyask. During the construction of the Keeyask GS, freight would be shipped through the City of Thompson either by rail or by truck, at the discretion of the contractor/supplier. If shipped by rail, the freight would be offloaded using a rail siding in Thompson and hauled by truck over a distance of 210 km along PR280 and the north access road to the Keeyask Project. Upgrades to the rail siding in Thompson would be carried out if required. A small proportion of freight may be handled at the rail siding in Gillam after the south access road is built.
Construction Camp
Key Stats of Camp •Phase I Capacity (2014)
•500 People •Phase II Capacity (2016)
•2000 People •Area Required
•129-ha •All on north side of river
Presenter
Presentation Notes
The Phase I main construction camp would accommodate approximately 500 workers working on the north access road, ice boom and Stage I cofferdams. The Phase II main construction camp which would be built to accommodate approximately 1,500 additional workers.
Room Highlights o 120 ft2
o Private bathroom o PTAC units to control room temperature o 44” pillow top mattress bed o 32” LED TV o Desk, storage unit
Craft Dorms
Room Highlights o 312 ft2
o Private bathroom o PTAC units to control room temperature in bedroom and living room o 54” pillow top mattress bed o 32” LED TV in bedroom and in Living Room o Couch, chair, coffee table/ end table o Bar fridge and microwave
Supervisory Dorms
FEATURES: o Seating for 300 people (Phase 1) o Faux Stone electric fireplaces complete with wall hung flat screen TV. o Bar type seating at all columns. o Wood pattern vinyl flooring. o 9 Foot ceilings complete with acoustic ceiling tiles.
Diner Complex
Gym and Rec. Centre
Entertainment Centre
FEATURES: o Raised pool table area complete with lounge seating. o Foosball, ping pong and other games throughout o Coffee and lounge seating th h t
Movie Theatre FEATURES: o Fully integrated surround sound. o High-definition projector. o Theatre style leather reclining seating o High vault ceilings for true movie experience.
Overlayof Final Structures on Existing River
Year 1 Construction - 2014 (January – August)
Presenter
Presentation Notes
This project has a large river management component. The existing channels pass approximately 4000 cubic meters per second. Most of this flow(80%) passes through the southern reach of the river. The current construction schedule has the first two summers dedicated to river management to get the spillway and powerhouse locations dewatered to begin excavation. The Ice boom is not in scope for the GCC. To be done by others. The ice boom function is create a stable upstream winter ice cover to eliminate downstream ice dams. This will reduce constructions costs by lowering the powerhouse cofferdam height.
Year 1 Construction - 2014 (August - December)
Presenter
Presentation Notes
Year 2 Construction - 2015
Presenter
Presentation Notes
Year 3 Construction - 2016
Year 4 Construction - 2017
Presenter
Presentation Notes
Year 5 Construction - 2018 (January – July)
Presenter
Presentation Notes
Year 5 Construction - 2018 (July - December)
Presenter
Presentation Notes
Year 6 Construction - 2019 (January - July)
Presenter
Presentation Notes
Year 6 Construction - 2019 (July - December)
Presenter
Presentation Notes
Year 7 Construction - 2020
Presenter
Presentation Notes
Year 8 Construction - 2021
Presenter
Presentation Notes
Material Sources/Borrow Areas
Excavated Material Placement Areas
Approximat ely 4 ,170,000 m3 of unclassif ied excavat ed mat erials result ing f rom excavat ions for t he principal st ruct ures and removal of cof ferdams will be placed wit hin excavat ed mat erial placement areas (EMPA).
Keeyask Generating Station Project Workforce (2019 ISD)
Average Construction Site Workforce
Total Labour required = 54,000 Person-Months
Presenter
Presentation Notes
Notes: The above forecasts are based on KGS Acres and Manitoba Hydro's forecast of workforce and a construction schedule based on a November 2019 first unit in-service date. The above information represents a forecast only, based on current regulations, present project plans, and experience with similar projects. Contractors will determine specific job requirements when the project is being built. Actual employment requirements will vary from the forecast presented above. "Average Construction Site Workforce" refers to the average number of people on site within the quarter specified, rounded to the nearest whole number. The above information indicates contractor site personnel (including supervisory and management positions). It also includes Manitoba Hydro site staff. The above forecasts do not include Manitoba Hydro Winnipeg office staff, or workforce for the construction of Substations and Transmission Lines.
MATERIAL VOLUME Excavation: Millions - Unclassif ied 3.1 m3
- Rock 2.0 m3
- Cofferdam Removal 0.6 m3
- Total Excavation 5.7 m3
Eart h Fill: Millions
- Impervious 2.0 m3
- Granular (w/ f ilt ers) 1.7 m3
- Rock ( Inc. Rip Rap and Road t opping) 2.3 m3
- Ot her 0.7 m3
- Tot al Eart h Fill 6.7 m3
Concret e: Thousands - Powerhouse and Transit ions 320 m3
