ML110100648
| ML110100648 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 12/21/2010 |
| From: | - No Known Affiliation |
| To: | Division of Operating Reactor Licensing |
| References | |
| Download: ML110100648 (15) | |
Text
1 WBN2Public Resource From:
Boyd, Desiree L [dlboyd@tva.gov]
Sent:
Tuesday, December 21, 2010 2:25 PM To:
Epperson, Dan; Wiebe, Joel; Poole, Justin; Raghavan, Rags; Milano, Patrick; Campbell, Stephen Cc:
Crouch, William D; Hamill, Carol L; Boyd, Desiree L
Subject:
TVA letter to NRC_12-21-10_FSAR RAI Response - Core Differences Attachments:
12-21-10_FSAR RAI Response - Core Differences_Final.pdf PleaseseeattachedTVAletterthatwassenttotheNRCtoday.
- ThankYou,
~*~*~*~*~*~*~*~*~*~*~*~*~*~*~
Désireé L. Boyd WBN2LicensingSupport SunTechnicalServices dlboyd@tva.gov 4233658764
~*~*~*~*~*~*~*~*~*~*~*~*~*~*~
Hearing Identifier:
Watts_Bar_2_Operating_LA_Public Email Number:
238 Mail Envelope Properties (7AB41F650F76BD44B5BCAB7C0CCABFAF1999B0B9)
Subject:
TVA letter to NRC_12-21-10_FSAR RAI Response - Core Differences Sent Date:
12/21/2010 2:24:36 PM Received Date:
12/21/2010 2:25:16 PM From:
Boyd, Desiree L Created By:
dlboyd@tva.gov Recipients:
"Crouch, William D" <wdcrouch@tva.gov>
Tracking Status: None "Hamill, Carol L" <clhamill@tva.gov>
Tracking Status: None "Boyd, Desiree L" <dlboyd@tva.gov>
Tracking Status: None "Epperson, Dan" <Dan.Epperson@nrc.gov>
Tracking Status: None "Wiebe, Joel" <Joel.Wiebe@nrc.gov>
Tracking Status: None "Poole, Justin" <Justin.Poole@nrc.gov>
Tracking Status: None "Raghavan, Rags" <Rags.Raghavan@nrc.gov>
Tracking Status: None "Milano, Patrick" <Patrick.Milano@nrc.gov>
Tracking Status: None "Campbell, Stephen" <Stephen.Campbell@nrc.gov>
Tracking Status: None Post Office:
TVANUCXVS2.main.tva.gov Files Size Date & Time MESSAGE 331 12/21/2010 2:25:16 PM 12-21-10_FSAR RAI Response - Core Differences_Final.pdf 221239 Options Priority:
Standard Return Notification:
No Reply Requested:
No Sensitivity:
Normal Expiration Date:
Recipients Received:
Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 December 21, 2010 10 CFR 50.4(b)(6) 10 CFR 50.34(b) 10 CFR 2.390(d)(1)
U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Watts Bar Nuclear Plant, Unit 2 NRC Docket No. 50-391
Subject:
Watts Bar Nuclear Plant (WBN) Unit 2 - Final Safety Analysis Report (FSAR) - Response to Request for Additional Information This letter responds to the following NRC staff request for additional information (RAI) provided verbally concerning the Unit 2 FSAR:
NRC RAI Why are the Unit 2 core source terms different from the Unit 1 core source terms?
RESPONSE
The core source terms for Unit 1 and Unit 2 are different primarily because Unit 1 is producing Tritium and Unit 2 will not produce Tritium. Due to the specialized equipment required to produce Tritium, the Tritium production core contains different materials than the standard core.
In addition, a different fuel cycle is required for Tritium production as compared to the standard core (i.e., fuel effective full power days [EFPDs] burnup is different for the two cores). Thus, the isotopic mix is different in the two cores. provides a listing of the Tritium production core (Unit 1) isotopic inventory and provides a listing of the standard core (Unit 2) isotopic inventory.
There are no new regulatory commitments contained in this letter. If you have any questions, please contact William Crouch at (423) 365-2004.
U.S. Nuclear Regulatory Commission Page 3 December 21, 2010 bcc (Enclosures):
Stephen Campbell U.S. Nuclear Regulatory Commission MS 08H4A One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 Loren R. Plisco, Deputy Regional Administrator for Construction U. S. Nuclear Regulatory Commission Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, Georgia 30303-1257
ENCLOSURE 1 Tritium Production Core (Unit 1) Inventory E1-1 Nuclide Total Core Inventory (Ci) 1X Burned (Ci/Assy) 2X Burned (Ci/Assy) 3X Burned (Ci/Assy) 1 Kr-83m 1.23E+07 7.63E+04 5.15E+04 6.13E+04 2
Kr-85m 2.69E+07 1.69E+05 1.10E+05 1.25E+05 3
Kr-85 8.81E+05 3.56E+03 5.54E+03 6.84E+03 4
Kr-87 5.23E+07 3.31E+05 2.11E+05 2.36E+05 5
Kr-88 7.38E+07 4.68E+05 2.97E+05 3.31E+05 6
Kr-89 9.10E+07 5.81E+05 3.63E+05 3.97E+05 7
Kr-90 9.01E+07 5.76E+05 3.59E+05 3.92E+05 8
Xe-131m 9.54E+05 5.31E+03 4.56E+03 6.18E+03 9
Xe-133m 5.80E+06 3.41E+04 2.60E+04 3.45E+04 10 Xe-133 1.88E+08 1.11E+06 8.36E+05 1.09E+06 11 Xe-135m 3.59E+07 2.08E+05 1.63E+05 2.19E+05 12 Xe-135 4.96E+07 2.84E+05 2.30E+05 2.19E+05 13 Xe-137 1.65E+08 9.75E+05 7.30E+05 9.51E+05 14 Xe-138 1.59E+08 9.55E+05 6.93E+05 8.79E+05 15 Xe-139 1.26E+08 7.57E+05 5.43E+05 6.83E+05 16 Xe-140 8.32E+07 5.07E+05 3.54E+05 4.36E+05 17 I-130 2.34E+06 9.02E+03 1.51E+04 3.14E+04 18 I-131 9.01E+07 5.24E+05 4.09E+05 5.49E+05 19 I-132 1.31E+08 7.63E+05 5.89E+05 7.87E+05 20 I-133 1.88E+08 1.11E+06 8.35E+05 1.09E+06 21 I-134 2.08E+08 1.23E+06 9.18E+05 1.19E+06 22 I-135 1.76E+08 1.04E+06 7.81E+05 1.02E+06 23 I-136m 5.05E+07 3.02E+05 2.21E+05 2.83E+05 24 Br-83 1.23E+07 7.63E+04 5.14E+04 6.11E+04
ENCLOSURE 1 Tritium Production Core (Unit 1) Inventory E1-2 Nuclide Total Core Inventory (Ci) 1X Burned (Ci/Assy) 2X Burned (Ci/Assy) 3X Burned (Ci/Assy) 25 Br-84m 6.68E+05 3.86E+03 3.06E+03 4.13E+03 26 Br-84 2.18E+07 1.37E+05 8.95E+04 1.03E+05 27 Br-85 2.65E+07 1.67E+05 1.08E+05 1.23E+05 28 Br-87 4.40E+07 2.79E+05 1.77E+05 1.98E+05 29 Cs-134 1.12E+07 3.13E+04 8.41E+04 1.48E+05 30 Cs-135 3.60E+01 1.30E-01 2.42E-01 3.48E-01 31 Cs-136 3.67E+06 1.53E+04 2.24E+04 4.57E+04 32 Cs-137 8.81E+06 3.34E+04 5.76E+04 7.66E+04 33 Cs-138 1.75E+08 1.05E+06 7.67E+05 9.80E+05 34 Cs-139 1.66E+08 9.95E+05 7.27E+05 9.28E+05 35 Cs-140 1.49E+08 8.95E+05 6.53E+05 8.32E+05 36 Cs-141 1.12E+08 6.75E+05 4.86E+05 6.14E+05 37 Rb-88 7.48E+07 4.74E+05 3.02E+05 3.37E+05 38 Rb-89 9.64E+07 6.13E+05 3.87E+05 4.29E+05 39 Rb-90m 2.13E+07 1.33E+05 8.74E+04 1.01E+05 40 Rb-90 9.41E+07 6.00E+05 3.76E+05 4.13E+05 41 Rb-91 1.15E+08 7.28E+05 4.66E+05 5.24E+05 42 Se-84 2.12E+07 1.33E+05 8.66E+04 9.93E+04 43 Sr-89 1.02E+08 6.47E+05 4.06E+05 4.54E+05 44 Sr-90 6.94E+06 2.78E+04 4.40E+04 5.45E+04 45 Sr-91 1.23E+08 7.72E+05 4.99E+05 5.68E+05 46 Sr-92 1.31E+08 8.14E+05 5.39E+05 6.27E+05 47 Sr-93 1.45E+08 8.97E+05 6.08E+05 7.26E+05 48 Sr-94 1.36E+08 8.39E+05 5.75E+05 6.92E+05
ENCLOSURE 1 Tritium Production Core (Unit 1) Inventory E1-3 Nuclide Total Core Inventory (Ci) 1X Burned (Ci/Assy) 2X Burned (Ci/Assy) 3X Burned (Ci/Assy) 49 Y-90 7.21E+06 2.89E+04 4.57E+04 5.78E+04 50 Y-91m 7.11E+07 4.48E+05 2.90E+05 3.30E+05 51 Y-91 1.29E+08 8.12E+05 5.23E+05 5.99E+05 52 Y-92 1.31E+08 8.17E+05 5.41E+05 6.30E+05 53 Y-93 1.49E+08 9.16E+05 6.23E+05 7.46E+05 54 Y-94 1.48E+08 9.07E+05 6.28E+05 7.63E+05 55 Y-95 1.57E+08 9.54E+05 6.72E+05 8.31E+05 56 Y-96 1.48E+08 8.99E+05 6.38E+05 7.93E+05 57 Zr-95 1.64E+08 9.97E+05 7.05E+05 8.71E+05 58 Zr-97 1.57E+08 9.38E+05 6.89E+05 8.83E+05 59 Nb-95 1.66E+08 1.00E+06 7.13E+05 8.78E+05 60 Nb-97m 1.49E+08 8.89E+05 6.53E+05 8.38E+05 61 Nb-97 1.58E+08 9.45E+05 6.95E+05 8.92E+05 62 Mo-99 1.68E+08 9.93E+05 7.48E+05 9.80E+05 63 Tc-99m 1.47E+08 8.70E+05 6.55E+05 8.58E+05 64 Tc-99 1.12E+03 4.36E+00 7.23E+00 9.15E+00 65 Tc-101 1.54E+08 8.96E+05 6.94E+05 9.29E+05 66 Ru-103 1.31E+08 7.25E+05 6.28E+05 8.97E+05 67 Ru-105 8.13E+07 4.21E+05 4.19E+05 6.55E+05 68 Ru-106 3.56E+07 1.37E+05 2.30E+05 3.49E+05 69 Ru-107 4.33E+07 2.08E+05 2.38E+05 3.96E+05 70 Rh-103m 118000000 653000 566000 808000 71 Rh-105m 22800000 118000 117000 183000 72 Rh-105 7.59E+07 3.92E+05 3.92E+05 5.92E+05
ENCLOSURE 1 Tritium Production Core (Unit 1) Inventory E1-4 Nuclide Total Core Inventory (Ci) 1X Burned (Ci/Assy) 2X Burned (Ci/Assy) 3X Burned (Ci/Assy) 73 Rh-106 3.94E+07 1.58E+05 2.49E+05 3.93E+05 74 Rh-107 4.35E+07 2.09E+05 2.39E+05 3.98E+05 75 Sn-130 3.14E+07 1.81E+05 1.43E+05 1.95E+05 76 Sb-127 8.87E+06 4.88E+04 4.30E+04 6.26E+04 77 Sb-129 2.77E+07 1.56E+05 1.30E+05 1.82E+05 78 Sb-130m 41600000 240000 190000 259000 79 Sb-130 8.97E+06 5.04E+04 4.23E+04 5.96E+04 80 Sb-133 5.52E+07 3.34E+05 2.38E+05 2.99E+05 81 Te-125m 2.17E+05 7.83E+02 1.45E+03 1.95E+03 82 Te-127m 1.15E+06 6.11E+03 5.81E+03 8.21E+03 83 Te-127 8.77E+06 4.80E+04 4.27E+04 6.20E+04 84 Te-129m 4.10E+06 2.32E+04 1.93E+04 2.68E+04 85 Te-129 2.73E+07 1.54E+05 1.28E+05 1.79E+05 86 Te-131m 1.27E+07 7.32E+04 5.87E+04 8.04E+04 87 Te-131 8.00E+07 4.66E+05 3.62E+05 4.85E+05 88 Te-132 1.29E+08 7.54E+05 5.80E+05 7.73E+05 89 Te-133m 7.15E+07 4.34E+05 3.08E+05 3.82E+05 90 Te-133 1.10E+08 6.48E+05 4.90E+05 6.43E+05 91 Te-134 1.62E+08 9.81E+05 6.97E+05 8.70E+05 92 Ba-137m 8.35E+06 3.17E+04 5.45E+04 7.26E+04 93 Ba-139 1.71E+08 1.02E+06 7.49E+05 9.61E+05 94 Ba-140 1.65E+08 9.88E+05 7.24E+05 9.30E+05 95 Ba-141 1.55E+08 9.29E+05 6.79E+05 8.67E+05 96 Ba-142 1.48E+08 8.92E+05 6.45E+05 8.17E+05
ENCLOSURE 1 Tritium Production Core (Unit 1) Inventory E1-5 Nuclide Total Core Inventory (Ci) 1X Burned (Ci/Assy) 2X Burned (Ci/Assy) 3X Burned (Ci/Assy) 97 La-140 1.69E+08 1.00E+06 7.48E+05 9.78E+05 98 La-141 1.56E+08 9.33E+05 6.83E+05 8.71E+05 99 La-142 1.52E+08 9.11E+05 6.61E+05 8.37E+05 100 La-143 1.46E+08 8.85E+05 6.31E+05 7.89E+05 101 Ce-141 1.59E+08 9.51E+05 6.94E+05 8.85E+05 102 Ce-143 1.47E+08 8.90E+05 6.36E+05 7.96E+05 103 Ce-144 1.17E+08 6.10E+05 6.00E+05 6.79E+05 104 Ce-145 9.96E+07 6.00E+05 4.32E+05 5.45E+05 105 Pr-143 1.46E+08 8.82E+05 6.30E+05 7.84E+05 106 Pr-144 1.18E+08 6.15E+05 6.04E+05 6.85E+05 107 Pr-145 9.97E+07 6.00E+05 4.32E+05 5.45E+05 108 Np-239 1.53E+09 8.24E+06 7.61E+06 1.16E+07 109 H-3 2.68E+07
ENCLOSURE 2 Standard Core (Unit 2) Inventory E2-1 Nuclide Ci / Assembly Total Core Inventory (Ci) 1 Kr-83m 5.96E+04 1.15E+07 2
Kr-85m 1.24E+05 2.39E+07 3
Kr-85 5.35E+03 1.03E+06 4
Kr-87 2.49E+05 4.81E+07 5
Kr-88 3.45E+05 6.66E+07 6
Kr-89 4.29E+05 8.28E+07 7
Kr-90 4.59E+05 8.86E+07 8
Xe-131m 5.43E+03 1.05E+06 9
Xe-133m 3.19E+04 6.16E+06 10 Xe-133 9.92E+05 1.91E+08 11 Xe-135m 2.10E+05 4.05E+07 12 Xe-135 3.33E+05 6.43E+07 13 Xe-137 9.23E+05 1.78E+08 14 Xe-138 8.64E+05 1.67E+08 15 Xe-139 6.41E+05 1.24E+08 16 Xe-140 4.46E+05 8.61E+07 17 I-130 9.99E+03 1.93E+06 18 I-131 4.90E+05 9.46E+07 19 I-132 7.18E+05 1.39E+08 20 I-133 1.01E+06 1.95E+08 21 I-134 1.12E+06 2.16E+08 22 I-135 9.65E+05 1.86E+08 23 I-136m 2.16E+05 4.17E+07 24 Br-83 5.96E+04 1.15E+07
ENCLOSURE 2 Standard Core (Unit 2) Inventory E2-2 Nuclide Ci / Assembly Total Core Inventory (Ci) 25 Br-84m 2.95E+03 5.69E+05 26 Br-84 1.11E+05 2.14E+07 27 Br-85 1.23E+05 2.37E+07 28 Br-87 1.96E+05 3.78E+07 29 Cs-134 8.61E+04 1.66E+07 30 Cs-135 0.00E+00 0.00E+00 31 Cs-136 3.05E+04 5.89E+06 32 Cs-137 6.04E+04 1.17E+07 33 Cs-138 9.36E+05 1.81E+08 34 Cs-139 8.72E+05 1.68E+08 35 Cs-140 7.83E+05 1.51E+08 36 Cs-141 5.97E+05 1.15E+08 37 Rb-88 3.54E+05 6.83E+07 38 Rb-89 4.62E+05 8.92E+07 39 Rb-90m 1.34E+05 2.59E+07 40 Rb-90 4.25E+05 8.20E+07 41 Rb-91 5.62E+05 1.08E+08 42 Se-84 1.08E+05 2.08E+07 43 Sr-89 4.84E+05 9.34E+07 44 Sr-90 4.63E+04 8.94E+06 45 Sr-91 6.03E+05 1.16E+08 46 Sr-92 6.41E+05 1.24E+08 47 Sr-93 7.24E+05 1.40E+08 48 Sr-94 7.22E+05 1.39E+08
ENCLOSURE 2 Standard Core (Unit 2) Inventory E2-3 Nuclide Ci / Assembly Total Core Inventory (Ci) 49 Y-90 4.91E+04 9.48E+06 50 Y-91m 3.50E+05 6.76E+07 51 Y-91 6.27E+05 1.21E+08 52 Y-92 6.46E+05 1.25E+08 53 Y-93 4.91E+05 9.48E+07 54 Y-94 7.80E+05 1.51E+08 55 Y-95 8.11E+05 1.57E+08 56 Y-96 7.83E+05 1.51E+08 57 Zr-95 8.66E+05 1.67E+08 58 Zr-97 8.35E+05 1.61E+08 59 Nb-95 8.74E+05 1.69E+08 60 Nb-97m 7.92E+05 1.53E+08 61 Nb-97 8.40E+05 1.62E+08 62 Mo-99 9.22E+05 1.78E+08 63 Tc-99m 8.11E+05 1.57E+08 64 Tc-99 0.00E+00 0.00E+00 65 Tc-101 8.36E+05 1.61E+08 66 Ru-103 7.66E+05 1.48E+08 67 Ru-105 5.20E+05 1.00E+08 68 Ru-106 2.59E+05 5.00E+07 69 Ru-107 2.99E+05 5.77E+07 70 Rh-103m 765000 147645000 71 Rh-105m 148000 28564000 72 Rh-105 4.95E+05 9.55E+07
ENCLOSURE 2 Standard Core (Unit 2) Inventory E2-4 Nuclide Ci / Assembly Total Core Inventory (Ci) 73 Rh-106 2.76E+05 5.33E+07 74 Rh-107 2.99E+05 5.77E+07 75 Sn-130 1.65E+05 3.18E+07 76 Sb-127 4.17E+04 8.05E+06 77 Sb-129 1.57E+05 3.03E+07 78 Sb-130m 221000 42653000 79 Sb-130 5.20E+04 1.00E+07 80 Sb-133 3.20E+05 6.18E+07 81 Te-125m 1.00E+02 1.93E+04 82 Te-127m 6.87E+03 1.33E+06 83 Te-127 4.11E+04 7.93E+06 84 Te-129m 3.01E+04 5.81E+06 85 Te-129 1.49E+05 2.88E+07 86 Te-131m 9.62E+04 1.86E+07 87 Te-131 4.14E+05 7.99E+07 88 Te-132 7.05E+05 1.36E+08 89 Te-133m 4.52E+05 8.72E+07 90 Te-133 5.49E+05 1.06E+08 91 Te-134 8.95E+05 1.73E+08 92 Ba-137m 5.40E+04 1.11E+07 93 Ba-139 8.94E+05 1.73E+08 94 Ba-140 8.98E+05 1.73E+08 95 Ba-141 8.10E+05 1.56E+08 96 Ba-142 7.71E+05 1.49E+08
ENCLOSURE 2 Standard Core (Unit 2) Inventory E2-5 Nuclide Ci / Assembly Total Core Inventory (Ci) 97 La-140 9.29E+05 1.79E+08 98 La-141 8.17E+05 1.58E+08 99 La-142 7.99E+05 1.54E+08 100 La-143 7.59E+05 1.46E+08 101 Ce-141 8.25E+05 1.59E+08 102 Ce-143 7.65E+05 1.48E+08 103 Ce-144 6.69E+05 1.29E+08 104 Ce-145 5.20E+05 1.00E+08 105 Pr-143 7.46E+05 1.44E+08 106 Pr-144 6.73E+05 1.30E+08 107 Pr-145 5.21E+05 1.01E+08 108 Np-239 9.69E+06 1.87E+09