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Grand Rapids GS Short Term Extension Licence Request (2014

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Grand Rapids GS Short Term Extension Licence Request (2014 360 Portage Ave (16) Winnipeg Manitoba Canada R3C 0G8 Telephone / No de téléphone : 204-360-3018 Fax / No de télécopieur : 204-360-6136 [email protected] 2014 10 30 Mr. Rob Matthews Manager, Water Use Licensing Manitoba Conservation and Water Stewardship Box 16 - 200 Saulteaux Crescent Winnipeg MANITOBA R3J 3W3 Dear Mr. Matthews: GRAND RAPIDS WATER POWER SHORT-TERM EXTENSION LICENCE REQUEST We request a five year short-term extension licence for the Grand Rapids Generating Station under the provisions of Section 92(1) of Water Power Regulation 25/88R. We have included a Short Term Extension Report as supporting documentation and will continue to work with your Section to address this Water Power licence. Manitoba Hydro continues to operate the Grand Rapids Generating Station in accordance with the Final Licence issued on May 30, 1975 under the Water Power Act. The Final Licence expires on January 2, 2015. Manitoba Hydro requested a renewal licence on December 17, 2010. However, due to licensing requirements for other projects, Manitoba Hydro is requesting a short-term extension licence to allow the licence renewal to occur at a later date. Please call me at 204-360-3018 if you need additional information. Yours truly, pp: Brian Giesbrecht W.V. Penner, P. Eng. Manager Hydraulic Operations Department Encl. MJD/sl/ 00112-07311-0014_00 WATER POWER ACT LICENCES GRAND RAPIDS GENERATING STATION SHORT TERM LICENCE EXTENSION APPLICATION SUPPORTING DOCUMENTATION Prepared for: Manitoba Water Stewardship 200 Saulteaux Crescent Winnipeg MB R3J 3W3 Prepared by: Manitoba Hydro 360 Portage Avenue Winnipeg MB R3C 0G8 October 29, 2014 Report No: PS&O – 14/08 HYDRAULIC OPERATIONS DEPARTMENT POWER SALES & OPERATIONS DIVISION GENERATION OPERATIONS WATER POWER ACT LICENCES GRAND RAPIDS SHORT TERM LICENCE EXTENSION APPLICATION SUPPORTING DOCUMENTATION Originally signed by P.Chanel Originally signed by PREPARED BY: P.Chanel P. CHANEL Originally signed by REVIEWED BY: B.W. Giesbrecht ~SBREcHT Originally signed by W.V. Penner APPROVED BY: W PENNER Originally signed by D. Cormie 2APiCfl NOTED BY: àMIE Certificate of Authorization Manitoba Hydro DATE: 20141029 No.38 Date: Q0~4 tO 2.ci REPORT NO: PS&O~ 14/08 1.0 INTRODUCTION This report provides information in support of a short-term extension licence application. Manitoba Hydro requests this extension licence in accordance with Section 92 of The Water Power Regulation, Manitoba Regulation 25/88R of The Water Power Act. Manitoba Hydro operates the Grand Rapids Generating Station (GS) in accordance with the Final Licence for the Development of Water Power at the Grand Rapids site on the Saskatchewan River. This licence was issued in accordance with the provisions of The Water Power Act on May 30, 1975 following completion of the second stage of this development. The licence was issued for a term of 50 years to be computed from January 2, 1965. Manitoba Hydro requested a renewal licence on December 17, 2010. However due to licensing requirements for other projects, Manitoba Hydro is requesting a short-term extension licence to allow the license renewal to occur at a later date. 2.0 PROJECT COMPONENTS 2.1 Grand Rapids Generating Station The Grand Rapids GS is located at the outlet of the Saskatchewan River into Lake Winnipeg as shown in Figure 1 and is approximately 400 km (250 miles) northwest of the City of Winnipeg. An overall site map outlining the layout of the major project components is shown in Figure 2, and Photograph 1 shows the Grand Rapids GS powerhouse. The Grand Rapids GS consists of a powerhouse, spillway and dykes and has a name plate capacity of 479 MW (642,000 hp). The station was constructed from January 1960 to November 1968, with the first turbine generator unit generating power by 1965. The station components include a four unit powerhouse fed by concrete encased penstocks that originate in the intake structure above the powerhouse, a four bay gated spillway, and approximately 25.7 km (16.0 miles) of earth-filled dykes. The penstocks are approximately 69.5 m (228 ft) in length and have an inner diameter of 8.8 m (29 ft). The earth-filled dykes extend for 16.4 km (10.2 miles) upstream along the south shore and 9.4 km (5.8 miles) upstream along the north shore. Figures 3 and 4 show the general arrangement of the concrete structures. Table 1 summarizes major characteristics of the generating station. Grand Rapids GS Short Term Licence Extension Supporting Documentation Table 1: Grand Rapids GS Major Characteristics Construction Period 1960 to 1968 Capability 479 MW (642,000 hp) Average Annual Generation 1,580 million kW-h Waterfall Drop (head) 36.6 m (120.1 ft) Maximum Licence Forebay Elevation 256.6 m (842.0 ft) Maximum Operating Forebay Elevation (MOFE) 256.6 m (842.0 ft) Available Freeboard @ MOFE - Concrete Structures 3.05 m (10.0 ft) Available Freeboard @ MOFE - Earth Structures 2.44 m (8.0 ft) Table 2 summarizes major characteristics of the Grand Rapids powerhouse, spillway, and earth-filled dykes. Table 2: Grand Rapids GS Component Characteristics Number of Units 4 units Length 152.0 m (498.7 ft) Deck Elevation 221.7 m (727.5 ft) Powerhouse Discharge Capability (at full gate) 1,500 m3/s (53,000 ft3/s) Units 1, 2, 3 122.3 MW (164,000 hp) Power Production1 Unit 4 111.9 MW (150,000 hp) Number of Bays 4 bays Length 116 m (380.6 ft) Spillway Deck Elevation 260.0 m (853.0 ft) Discharge Capability (at MOFE) 3,940 m3/s (139,000 ft3/s) Length - Dyke 1 South 4,115 m (13,500 ft) Length - Dyke 2 South 5,898 m (19,345 ft) Length - Dyke 3 South 3,749 m (12,297 ft) Length - Dyke 3A South 439 m (1,440 ft) Length - Dyke 4 South 2,203 m (7,230 ft) Length - Cross Lake 1 131 m (430 ft) Length - Cross Lake 2 206 m (675 ft) Earthfill Dykes Length - Cross Lake 3 402 m (1320 ft) Length - Cross Lake 4 213 m (700 ft) Length - Cross Lake 5 614 m (2015 ft) Length - Cross Lake 6 358 m (1175 ft) Length - Dyke 1 North 2,188 m (7,178 ft) Length - Dyke 2 North 5334 m (17,500 ft) Design Crest Elevation (minimum) 259.1 m (850 ft) 1 Units 1 to 3 received major overhauls, and the replacement of turbine runners from 1995 to 2001. Each unit was originally rated for a power production of 111.9 MW (150,000 hp). Grand Rapids GS Short Term Licence Extension Supporting Documentation 2.2 Moose Lake Narrows Control Structure The Moose Lake Narrows Control Structure is located approximately 105 km (65 miles) northwest of the Grand Rapids GS and 75 km (47 miles) northeast of The Pas, as shown in Figure 1. The structure is located in the channel connecting North and South Moose Lakes and was designed to afford some protection upstream of the structure during times when Grand Rapids operations cause Cedar Lake to rise to its maximum storage capacity. The control structure forms a portion of the northern boundary of the Grand Rapids GS reservoir. Construction of the control structure was completed in 1964, and includes eight stop log sluiceways that are 4.88 m (16 ft) wide for a total structure length of approximately 37.8 m (124 ft). Stop logs are inserted or removed in order to open or close the structure, and regulate the quantity and direction of flow through the Narrows. Sluices 1 and 8 were permanently closed with fill in May 1991 to keep the end walls of the structure from moving inward, leaving six operating sluices. In July 2004, one of the operating sluices was modified to function as a fishway. The fishway has all logs in place except for the bottom log to allow fish passage through the structure at all times throughout the year. Associated with the structure is about 900 m (3000 ft) of earthen dyke armoured by quarried limestone. Photograph 2 provides a picture of the Moose Lake Narrows CS. Manitoba Hydro operates the Moose Lake Narrows Control Structure in accordance with Rules of Operation (April 1985) put in place by the Department of Natural Resources to prevent negative effects from high water levels on Cedar and South Moose Lakes. 2.3 Red Earth Dam and Lamb’s Trail Dyke The Red Earth Dam is a controls structure located approximately 110 km (70 miles) northwest of the Grand Rapids GS, as shown in Figure 1. The Lamb’s Trail Dyke is located 2.4 km (1.5 miles) north of the Red Earth Dam. These two structures form a portion of the northern boundary of the Grand Rapids GS reservoir. The purpose of the control structure and dyke is to isolate Red Earth Lake from the Grand Rapids forebay, since the impoundment of water in the Grand Rapids GS forebay affects the water levels on the lake. Manitoba Hydro is responsible for preventing water from flowing into the wildlife management area north of the Summerberry River when Saskatchewan River flows as measured at The Pas are less than 2435 m3/s (86,000 ft3/s) and the forebay elevation is less than 256.6 m (842 feet). Construction of both structures was completed in 1964. The Red Earth Dam consists of a small timber sluiceway located at a natural outlet of Red Earth Lake, as shown in Photograph 3, and the Lamb’s Trail Dyke consists of a tiny freeboard dyke near the east Grand Rapids GS Short Term Licence Extension Supporting Documentation shore of the lake.
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