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<br />Water Year 1982
<br />In operation studies of Lake Mead and Lake
<br />Powell for the Hoover operating year, which
<br />ends May 31. 1 9S2, the amounts released at
<br />Hoover Dam have been projected to satisly
<br />only minimum downstream water
<br />requirements, including diversions by The
<br />Metropolitan Water District. while complYing
<br />with the overall requirements to meet
<br />I scheduled periodic maintenance at compact and operating criteria release
<br />Dover, Parker, and DavIs Powerplants was provisions. Tile water scheduled to be
<br />Hformed in water year 1981. During the released will generate about 90.1 percent of The installation of control wiring and related
<br />,ar, the Arizona Number Seven (A7) defined firm energy, The estimated monthly equipment needed to complete the
<br />merating unit's turbine runner was replaced Hoover releases during the operating year automation of the generating units at both the
<br />ith a new stainless steel runner which will total 7.8 million acre-feet. It is estimated that Davis and Parker Powerplants has been
<br />duce main1enance time and increase genefatior\ ~~Qm tnese KOCNe~ releases, along accompl\shed. Refinement of the necessary
<br />ficiency of 1he turbine. The runner on Unit with the Hoover to Parker-Davis interchange, software (computer programming and
<br />~ at Hoover Powerplant was reconditioned will result in delivery to the allottees of about operational and administrative areas of
<br />ld reinstalled, The new stainless"steel runner 3,6 billion kWh of electrical energy, Deficien-cy -responslbilify)isbefng"completed, with the
<br />r this unit cannot be satisfactorily L:sed un1il power purchases have nol been budgeted for remote control operation of both powerplants
<br />__,eed is greater than 200 rpm, Also, the upper _---2perat[ng y~ar.lgS2, __ scheduled to occur dU,'ing waler year 19S2,__
<br />'Izona penstock at Hoover Dam was When the automation IS tully etfected. the
<br />conditioned during water year 1981. The upper Nevada pens10ck \s scheduled iar eXls11ng powerp\ant co\"\tm\ tQOms W~\\ be
<br />reconditioning during water year 1982. A unmanned and the present operators
<br />replacement of the intaKe structure's cylinder assigned to other duties in the powerplants.
<br />gate seals also is scheduled at the same time. The Davis and Parker generator units will be
<br />The seals have been redesigned and include operated from the Department 01 Energy'S
<br />bonded rubber on the sealing surface instead pnoenix Dispatch Office, working in
<br />of a bronze surface. The purpose of this conjunction with Reclamation's Water
<br />redesign Is to provide a better fitting seal so Scheduling Branch in Boulder City, Nev,
<br />that the invert section of the penstock can be
<br />maintamed in a more satisfactory manner.
<br />
<br />
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<br />E.:.!-"It
<br />:Ire than 600.000 tour Hoover Dam and Powerp1anl each year.
<br />
<br />1e lotal energy delivery \0 the Hoover
<br />101lees during the 1 9S1 operating year (June
<br />1 9S0"May 31, 1 9S1) was 4,931.167.357
<br />lowatt-hours (kWh), 01 this totai delivery, firm
<br />lergy amounted to 3,953.320.000kWh, and
<br />e balance was disputed energy,
<br />13.03S,527 kWh, and secondary,
<br />,4,SOS,S30 kWh,
<br />
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<br />Replacement rolor at Hoover Powerplan1.
<br />
<br />The contractor started up rating genera ling
<br />unit A5 during water year 1 9S1, This
<br />undertaking will involve rewinding the stator
<br />coils, reinsu\ating the rolor coils, and installing
<br />a solid state voltage reguiator lor the main
<br />excitor. At the same time this work is being
<br />accomplished, the Government is rebuilding
<br />all of the control circuifs to replace obsolete
<br />equipment. This will enable the operators 10
<br />start and stop the unit from the control room.
<br />
<br />The following charts illustrate Lower Basin
<br />generator unit outage schedules for water
<br />year 19S1 and waler year 19S2,
<br />
<br />31
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