ML13066A587

Email from J. Mitman, NRR to F. Ferrante, NRR on Jocassee Inflow Calc

ML13066A587
Person / Time
Site:	Oconee
Issue date:	11/09/2010
From:	Jeffrey Mitman Office of Nuclear Reactor Regulation
To:	Ferrante F Office of Nuclear Reactor Regulation
References
FOIA/PA-2012-0325
Download: ML13066A587 (4)

Text

Mitman, Jeffrey From: Mitman, Jeffrey I IJ Sent: Tuesday, November 09, 2010,9:04 PM To: Ferrante, Fernando ,

Subject:

Jocassee inflow calc Attachments:

Reservoir Volumes (2).xlsx Fernando, attached is my revised spreadsheet.

With the additional data at the elevations of interest (1106 to 1125) I've re-plotted just this portion of the basin curve. According to Excel the curve is linear in this region. Let me know what you think.I've also plotted the surface area based on the available data.I've tried to reproduce the max inflow (inflow + rain water) equal to 522,000 using the HECI detailed output.But I cannot get the 378,282 cfs plus the 0.53 in./hr. near the known total of 522,000. If you've got time to kill, you can look at "Sheet2" of the spreadsheet to see my attempts.However, looking through the output, I have found the composite parts. The HECI flood routing output shows a max total inflow of 522,734 (at time 40.33) with a max total routing of 378,282 (at time 40.50) and a max direct (rain) of 157,680 (at time 40.17), or: 378,282 + 157,680 = 535,962. This is close enough for me to the stated value of 522,734. I attribute the discrepancy to the difference in the times of the various maximums.Jeff 1 se sa sq se elevation (ft. MSL)1 2 3 4 5 6 7 8 9 10 11 12 760 780 820 860 900 940 980 1020 1060 1100 1123 1123.5 surface area (acre)0 180 650 1500 2450 3450 4350 5300 6250 7250 7500 Computed Storage Volume (acre ft)1,200 16,827 58,660 136,887 254,318 409,970 602,658 833,397 1,103,150 1,272,767 1,276,518 0 0 26,600 26,600 67,475 69,074 72,295 75,539 78,801 82,076 85,359 87,822 total discharge (SCFM)discharge from spillway 1080 1105.99 1106 1110.99 1111 1112 1114 1116 1118 1120 1122 1123.5 0 0 40,875 42,474 45,695 48,939 52,201 55,476 58,759 61,222 70,000 60,000 50,000 40,000 30,000 20,000 10,000 isannon1 surface area (acre)8000 7000 6000 5000 4000 3000 2000 1000 0 surface area (acre)I -F torage Capacit 1,340,000 Y= 11 1,320,000 1,300,000 1,280,000 1,260,000 1,240,000 1,220,000

-1,200,000 1,180,000 950 1,160,000

--1,140,000

--1,120,000 750 850 950 1050 Spillway Discharge Curve Y= 1628.5x -2E+06 D2- i L110 1112 1114 1116 1118 1124 1126 1128 1120 1122 Elevation Storage Capacity 760 780 1,200 820 16,827 860 58,660 900 136,887 940 254,318 980 409,970 1020 602,658 1060 833,397 1100 1,103,150 1106 1,146,702 1107. 1,154,51 118 ,161,495 1113.8 1204254 1106.2 1,222,252 1120.17 1,250,912.

V 1121.1 71,258,243 1123 1,272,767 1123.5 1,276,518 1125 ,8 [ 788"i 1130 1125.5 1126 Excel Mitman Fernando (152,147)(161,305)(152,073)(106,111)(23,420)96,001 252,151 445,031 674,641 940,980 984,099 991,366 998,655 1,013,304 1,030,263 1,041,389 1,059,297 1,074,322 1,088,681 1,096,271 1,103,123 1,110,757 1,114,582 1,126,094 1,164,838 1,129,942 1,133,797 9,863 705 9,937 55,899 138,590 258,011 414,161 607,041 836,651 1,102,990 1,146,109 1,153,376 1,160,665 1,175,314 1,192,273 1,203,399 1,221,307 1,236,332 1,250,691 1,258,281 1,265,133 1,272,767 1,276,592 1,288,104 1,326,848 1,291,952 1,295,807 13,240 2,460 8,860 52,540 133,500 251,740 407,260 600,060 830,140 1,097,500 1,140,819 1,148,121 1,155,446 1,170,165 1,187,208 1,198,389 1,216,387 1,231,489 1,245,922 1,253,552 1,260,439 1,268,113 1,271,959 1,283,531 1,322,485 1,287,400 1,291,275 105.00%-47.35%-10.43%-2.47%-1.01%-0.66%-0.43%-0.39%-0.51%-0.51%-0.53%-0.52%-0.46%-0.51%-0.49%-0.48%-0.44%-0.40%-0.37%-0.38%-0.37%-0.36%-0.33%