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<br />Power Operations [Cont.] <br />Lower Basin <br /> <br />Water Year 1987 <br /> <br />The tolal energy delivery 10 the Hoover allollees during the <br />1987 operaling year (June 1, 1986 - May 31, 1987) was <br />7,287,747,600 kilowall-hours (kWh), Of that amount, <br />3,343,770,474 kWh was secondary energy in excess of contract <br />defined firm energy, <br /> <br />On June 1,1987,lhe United Slates took over the operation of <br />the Hoover powerplant. The Bureau of Reclamation became <br />the operator of the power plant and the Western Area Power <br />Administration the scheduler, contracting officer and <br />transmitter of the energy generated, <br /> <br />The period June 1, 1987, through September 30,1987, served <br />as an interim transition period. During that time, <br />approximately 1.68 Billion kWh of gross energy was <br />generated, <br /> <br />Related regulations include Public Law 98.381 of August 17, <br />1984 (the Hoover Powerplant Act of 1984) and the 'General <br />Regulations for the Charges for the Sale of Power From the <br />Boulder Canyon Project; Final Rule" (Federal Register, <br />November 28, 1986, 10 CFR Part 9(4), <br /> <br />The remote control operation of Davis and Parker <br />powerplants, which first began during water year 1982, <br />continued without event. These generator units are computer <br />operated from the Western Area Power Administration's <br />Phoenix District Omce, using hourly gate opening and <br />megawatt schedules input and modified by Reclamation's <br />water scheduling branch in Boulder City, Nevada, <br /> <br />A contract was awarded in water year 1985 for modification <br />and repair work in both the Nevada and Arizona spillway <br />tunnels at Hoover Dam. The work consisted of construction <br />of slotted ring air-inducing devices in the inclined sections of <br />the spillway tunnels and the repair of tunnel concrete lining, <br />Work on the Nevada spillway began in October 1985 and was <br />completed August 1986, The Arizona spillway work began in <br />September 1986 and was completed in July 1987, <br /> <br />Scheduled maintenance at Hoover Dam for water year 1987 <br />included normal replacements of stators, thrust bearings, <br />water pipes, and transformers. <br /> <br />Water Year 1988 <br /> <br />In .operation sludies of Lake Mead and Lake Powell for the <br />Hoover operating year, which ends September 30, 1988, the <br />amounts released at Hoover Dam have been projected to <br />satisfy both downstream water requirements, including <br /> <br />diversions by MWD and CAP, while also complying with the <br />overall requirements to meet Compact, /lood control, and <br />operating criteria release provisions, The water scbeduled to <br />be released will generate Schedules A and B energy and in <br />some months excess energy, Tbe estimated monthly Hoover <br />releases during Water Year 1988 total 10,7 MAF, It is <br />estimated that generation from these Hoover releases, along <br />witll the Hoover ,to Parker-Davis interchange, will result in <br />delivery to the approved contractors of about 5.0 billion kWh <br />of electrical energy, <br /> <br />A $7,637,385 Reclamation contract has been awarded for <br />uprating generators N-3 ilnd N-4 at Hoover Dam in Nevada, <br />The contract was awarded to General Electric Company of <br />Denver, Colorado, Work will begin in 1988 and is scheduled <br />to be completed in 1988, <br /> <br />Principal work under lhe contract includes conducting a study <br />of the existing generator design, furnishing and installing <br />necessary new components, and modifying the two <br />generators, as required to accomplish the proposed uprating, <br />The objective is to uprate tbe generators by the optimum <br />amount, based on water availability and economic feasibility, <br />Studies show that sufficient water, head, and turbine capacity <br />are available to produce significantly more generator output <br />than the existing generator ratings will allow, The generators <br />were manufactured by. Westinghouse, Generator N-3 was <br />installed in 1937 and generator N-4 in 1936, <br /> <br />An addilional $10,620,722 contract has been awarded, also to <br />the General Electric Company of Denver, Colorado, to uprate <br />generating units AI., A2, A6, and A7 at Hoover Dam in <br />Arizona. After starting work on tbose units, lhe contractor will <br />have 2 years to complete tbe job, Upon completion of this <br />contract, eight of the 17 generating units in the power plant will <br />have been uprated, <br /> <br />The Hoover Uprating Program was autborized by the Hoover <br />Powerplant Act of 1984 (Act), which froalized a historic <br />three-State agreement on the marketing of Hoover power <br />after the original contracts terminated on June I, 1987, The <br />Act also requires that the Hoover Uprating Program be <br />undertaken witb funds advanced by the non-Federal <br />purcbasers of Hoover power. <br /> <br />Scheduled for completion in 1992, the Hoover Uprating <br />Program will be funded with an estimated $126 million from <br />non-Federal sources in Arizona, California, and Nevada, <br />Arizona and Nevada will each fund about 37 pereent of the <br />costs, with the remainder being financed by nine <br />municipalities in soutbern California, <br /> <br />27 <br />