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<br />Table 1, Problem Centered Design Approach - Problem Scenarios for the TV A System <br /> <br />Cateaorv <br /> <br />1. Scheduling/Forecasting <br />a. Power Supply <br />Perspective <br /> <br />b. Reservoir Operations <br />Perspective <br /> <br />2. Scheduling/Forecasting <br /> <br />IV <br />, <br />-.J <br /> <br />3. SchedulinQlForecasting <br /> <br />4. Scheduling/Forecasting <br />(Seasonal) <br /> <br />5. Operational Planning <br /> <br />6. Policy Planning <br /> <br />.. Retidenl Models: <br /> <br />Non-Resident Models: <br /> <br />(1IGl,oB.n 03-22.9:'1 <br /> <br />Scenario <br />Name <br /> <br />NormalOay <br /> <br />Normal Day <br /> <br />Thermal Compliance <br /> <br />Water Quality <br /> <br />Time Horizon <br /> <br />Situation <br /> <br /> <br />Primary Models' <br /> <br /> <br />1 day - 5 week& <br /> <br />Known or anticipated reservoir and <br />power system conditions. <br /> <br />1 . 14 day. (daily) <br /> <br />Known or anticipated reservoir and <br />power system conditions. <br /> <br />1 - 14 days (dally) <br />14.180 days (weeidy) <br /> <br />Based on forecast meteorology <br />and water temperature, thermal <br />compliance problema are likely to <br />occurr .t Sequoyah Nuclear Plant <br />I.n the next 5 days. <br /> <br />1 .14 days (daily) Current data and foreca.t. of DO <br />14 . 180 days (weeidy) levels Indicele lhat DO targeta below <br />Walll Bar Dam may be violated this <br />week, thereby threaten~ I11\lOdI beds,. <br /> <br />Summer Schedule 1 .14 days (dally) June 1 recreation targellevela have <br />14 - 180 da~ ~~~) been met or exceeded lit all reservoirl. <br /> <br />Weir Maintenance <br /> <br />Climate Change <br /> <br />Multi-year (weekly) F10Y1 rMtrictions are required at <br />South Holston Dam 'or maintenance <br />on downstream weir. <br /> <br />Multi.year (weeldy) Global warming may result In <br />Increased temperatures and changes <br />. I~ pr~lp~~OI'1I~ Ih'! ll<>~~~~' <br /> <br />PRSYM - Power snd Reservoir System Model <br />SITE. Site specific modeJs 'or appropriate power plant or reservoir <br /> <br />MMS . Modular (Hydrologic) Modeling System <br />PSM ~ TVA Power Supply Operational & Planning Modets <br />ROBECS . TVA Reservoir Operations Scheduling Model <br />SYSTEMPQ. TVA System Temperature and Water Quality Model <br />WSM - TVA Weeldy Scheduling Model (Reservoir & Power System Planning Models) <br /> <br />PSM <br />SITE <br /> <br />PRSYM <br />ROBECS <br /> <br />PRSYM <br />SITE <br />SYSTEMPQ (II needed) <br /> <br />PRSYM <br />SITE <br />SYSTEMPQ (II needed) <br /> <br />PRSYM <br /> <br />PRSYM or WSM <br />PSM <br /> <br />MMS <br />WSM <br />SYSTEMPQ <br /> <br />Model Application <br /> <br />Provide support 'or daily power & reservoir <br />system scheduling. <br /> <br />Provide operationally acceptabl~ <br />14- day reservoir schedule that meets <br />mutti-objective purposes and minimizes <br />~o~"':~ ~r prod~.n costs, <br /> <br />Determine acceptable reservoir <br />release schedule to provide the <br />qIJantity and temperature 0' <br />water needed or the required plant <br />o~ratlon tt! ~vert a problem. <br /> <br />Determine acceptable adjustment <br />In reaervotr operations to Improve <br />DO levels. <br /> <br />Develop acceptable June 1 . Aug 1 <br />release schedule for aU reservoln.. <br /> <br />Schedule the maintenance and alter <br />reservoir operation. to minimize system <br />~~ruptlon8 a~d ~_r ~rstem ImpaCts. <br /> <br />Determine potentlallmpad. on <br />multipurpose reservoir operations <br />!~~, ~r ~e~ra~lo~. <br /> <br />HS!:l123W-W,o..Ir..llll</'M3 <br /> <br />Q <br />c;;:, <br />Co. <br />"'" <br /> <br />,.... <br /> <br />;;l <br />R <br />" <br />S <br />'" <br />~ <br />e. <br />'tl <br />~ <br />.g. <br />R <br />~ <br />