ML100630146

From kanterella
Jump to navigation Jump to search

Plant Withdrawals Impacts, Water Supplied by Sccw Intake/Average Velocity for Expect No. of Bays in Service
ML100630146
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 02/25/2010
From:
Tennessee Valley Authority
To:
Office of Nuclear Reactor Regulation
References
TAC MD8203
Download: ML100630146 (1)


Text

NumberofOperating Units FlowCondition WattsBarDam HeadwaterElevation (ftMSL) 270 cfs 121,000 gpm 174 mgd 6

3 7.13 (ft) 710.00 (ftmsl) 30.75 (ft) 219.1 (ft2) 6 (ft) 2 (ft) 2 (in) 79%

3/8"x3/8" 14 0.08 (in) 67.9%

184.5 (ft2) 98.6 (ft2) 8.05 (ft) 33 0.625 (in) 20.625 (in) 6.33 (ftmsl) 729.84 (ft) 20 (t) 11 0.5 (in) 5.5 (in) 19.54 (ft) 77%

161.04 (ft2) 123.76 (ft2)

PLANTWITHDRAWALIMPACTS Grossareaat travelingscreen (concrete)

Grossareaat travelingscreen (screenpanel)

Netopenareaat travelingscreen (approx)

Grossareaatfaceof trashrack Netopenareaat trashrack(approx)

WaterSuppliedbySCCWIntake fps NormalSummerPool Approx.SCCWInflow AverageVelocityforxpectedNo.ofBaysinService 0.91 0.56 0.73 fps fps fps fps 740.75 0.49 Grossareaofeachbayatfaceoftrashrack Netopenareaofeachbayattrashrack(approx)

No.verticalbarsoftrashrackeachbay Widthofeachverticaltrashrackbar Totalwidthofverticalbarstrashrackeachbay Percentopenareathrutrasrackeachbay(approx)

Widthofeachhorizontaltrashrackbar Totalwidthofhorizontalbarstrashrackeachbay Grossareaofeachbayattravelingscreen(screentray)

Totalnetwidthofopenareatrashrackeachbay Approxno.horizontalbarstrashrackeachbay Totalnetheightofopenareatrashrackeachbay Widthofeachbayattravelingscreen(concrete)

Heightofeachbayatnormalsummerpool Grossareaofeachbayattravelingscreen(concrete)

Widthoftravelingscreenpanels(approx)

Percentopenareathruscreens(http://www.millerwireworks.com/A Wtable.html)

Netopenareaofeachbayattravelingscreen(approx)

Diameterofscreenwire Widthoffaceoftrashrackeachbay(faceofouterverticalbars)

Invertelevationateachbay/travelingscreens Elevationoftopoftrashrackopening Heightoftrashrackopeningeachbay(alongslope)

Heighoftravelingscreenpanels(approx)

SCCWintaketotalno.ofbays SCCWintakeexpectedno.ofbaysinservicewithU1&U2operation Screenopenings Wiregageofscreens 0.41 Two Widthofpanelcircumferentialsupports(approx)

Percentofpanelunobstructedbycircumferentialsupports