| RATED
CAPACITY |
| Original |
5,225,000 |
kw |
| Uprated (1985) |
5,428,500 |
kw |
| GENERATING
UNITS |
| Number of Turbines |
11 |
|
| Type |
Francis |
|
| Rated Capacity
(Original) |
648,000 |
HP |
| Rated Capacity (Uprated) |
680,000 |
HP |
| Rated Net Head |
312.4 m |
(1,025 ft) |
| Synchronous Speed |
200 |
r.p.m |
| Scroll Case Inlet
Diameter |
4.48 m |
(14.7 ft) |
| Runner Inlet
Diameter |
5.82 m |
(19.1 ft) |
| Runner Weight |
77.13 t |
170,000 lb |
| Long Term Plant
Mean Flow |
1387.52 m3/s |
(49,000 ft3/sec) |
| GENERATORS |
| Rated Voltage |
15 |
kv |
| Rated Capacity |
526,315 |
kva (7 units) |
| |
500,000 |
kva (3 units) |
| |
530,000 |
kva (1 unit) |
| Rated Power Factor |
0.95 |
|
| Rotor Diameter |
9.11 m |
(29.9 ft) |
| Rotor Weight |
576 t |
(1,270,000 lb) |
| StatorCoreDepth |
2.99 m |
(9.8 ft) |
| PENSTOCKS |
| Number |
11 |
|
| Length |
426.72
m |
(1,400 ft) |
| Diameter - Concrete
Lined Section |
6.10 m |
(20 ft) |
| Diameter- Steel
Lined Section |
4.48 m |
(14.7 ft) |
| MACHINE
HALL |
| Length |
296.27 m |
(972 ft) |
| Width |
24.70 m |
(81 ft) |
| Height |
46.94 m |
(154 ft) |
| Overhead Travelling |
2 X 400 |
t |
| SURGE
CHAMBER |
| Length |
232.56 m |
(763 ft) |
| BoflomWioth |
12.19 m |
(40 ft) |
| Top Width |
19.5 m |
(64 ft) |
| Height |
45.11 m |
(148 ft) |
| VENT
SHAFT |
| Diameter |
6.10 m |
(20 ft) |
| Depth |
252.68 m |
(829 ft) |
| TAILRACE
TUNNELS (Unlined) |
| Number |
2 |
|
| Width |
13.71 m |
(45 ft) |
| Height |
18.29 m |
(60 ft) |
| Length |
1691.64 m |
(5,500 ft) |
| TRANSFORMER
GALLERY |
| Transformers |
11 |
(5,500 mva) |
| Voltage |
14.75/240 |
kv |
| Length |
260.91 m |
(856 ft) |
| Width |
15.24 m |
(50 ft) |
| Height |
11.89 m |
(39 ft) |
| CABLE
SHAFTS |
| Cables (oil filled) |
10.07 |
km |
| Voltage |
240 |
kv |
| Number |
6 |
|
| Diameter |
2.13 m |
(7 ft) |
| Depth |
263.65 m |
(865 ft) |
| SWITCHYARD |
| 715/236 kv
Transformers |
18 |
(6,000 mva) |
| 230/138 kv
Transformers |
2 |
(84 mva) |
| 735 kv - 55 mva
Reactors |
9 |
(495 mva) |
| 735 kv Circuit
Breakers |
12 |
|
| 230 kv Circuit
Breakers |
16 |
|
| TRANSMISSION |
| 735 kv Lines |
3 @ 608 km |
(378 mi) |
| 230 kv Lines |
2 @ 463 km |
(288 mi) |
| 138 kv Lines |
1 @ 267 km |
(166 mi) |
| 66 kv Lines |
200 km |
(124 mi) |
| RESERVOIRS |
| Smallwood |
| Maximum Normal
Water Level |
473 m |
(1,551 ft) |
| Minimum Water Level |
464 m |
(1,522 ft) |
| Reservoir Area |
5698 km2 |
(2,200 mi2) |
| Active Storage |
28.97 x 109
m3 |
(1022 x 109
ft3) |
| Ossokmanuan |
| Maximum Normal
Water Level |
479 m |
(1,572 ft) |
| Active Storage |
2.84 x 109
m3 |
(100.1 x 109
ft3) |
| East
and West Forebay |
| Active Storage |
0.864 x 109
m3 |
(30.5 x 109
ft3) |
| DYKES |
| Total Number |
88 |
|
| Total Volume of
Material |
20,000,000 m3 |
(26,000,000 cyd) |
| Average Height |
9 m |
(30 ft) |
| Maximum Height (Forebay
Area) |
36 m |
(117 ft) |
| Largest in Volume (Forebay
Area) |
1,950,000 m3 |
(2,551,000 cyd) |
| Longest (Sail Lake
Area) |
6041 m |
(19,813 ft) |
| Total Crest Length |
64.4 km |
(40 mi) |
| CLIMATE |
| Average Annual
Precipitation |
765 mm |
(30.1 in) |
| Temperature Range |
-48
C to 30 C |
(-55 F to 87 F) |
| Temperature Average
Annual |
-4 C |
(25 F) |
