ML11187A358
| ML11187A358 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 06/27/2011 |
| From: | Office of Nuclear Reactor Regulation |
| To: | Division of Operating Reactor Licensing |
| References | |
| Download: ML11187A358 (7) | |
Text
1 WBN2Public Resource From:
Poole, Justin Sent:
Monday, June 27, 2011 9:05 AM To:
Klementowicz, Stephen Cc:
WBN2HearingFile Resource
Subject:
FW: TVA letter to NRC_06-24-2011_RAI Response FSAR Ch 11_Corrected Value in FSEIS Table 3-23 Attachments:
06-24-2011_RAI Response FSAR Ch 11_Corrected Value in FSEIS Table 3-23_Final.pdf Here is a copy of the letter sent to document control today.
JustinC.Poole ProjectManager NRR/DORL/LPWB U.S.NuclearRegulatoryCommission (301)4152048 email:Justin.Poole@nrc.gov From: Boyd, Desiree L [1]
Sent: Monday, June 27, 2011 4:52 AM To: Epperson, Dan; Poole, Justin; Raghavan, Rags; Milano, Patrick; Campbell, Stephen Cc: Crouch, William D; Hamill, Carol L; Boyd, Desiree L
Subject:
TVA letter to NRC_06-24-2011_RAI Response FSAR Ch 11_Corrected Value in FSEIS Table 3-23 PleaseseeattachedTVAletterthatwassenttotheNRCtoday.
- ThankYou,
~*~*~*~*~*~*~*~*~*~*~*~
Désireé L. Boyd WBN2LicensingSupport SunTechnicalServices dlboyd@tva.gov 4233658764
Hearing Identifier:
Watts_Bar_2_Operating_LA_Public Email Number:
440 Mail Envelope Properties (19D990B45D535548840D1118C451C74D8CB27F32F0)
Subject:
FW: TVA letter to NRC_06-24-2011_RAI Response FSAR Ch 11_Corrected Value in FSEIS Table 3-23 Sent Date:
6/27/2011 9:05:02 AM Received Date:
6/27/2011 9:05:04 AM From:
Poole, Justin Created By:
Justin.Poole@nrc.gov Recipients:
"WBN2HearingFile Resource" <WBN2HearingFile.Resource@nrc.gov>
Tracking Status: None "Klementowicz, Stephen" <Stephen.Klementowicz@nrc.gov>
Tracking Status: None Post Office:
HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 861 6/27/2011 9:05:04 AM 06-24-2011_RAI Response FSAR Ch 11_Corrected Value in FSEIS Table 3-23_Final.pdf 101276 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 June 24, 2011 10 CFR 50.4(b)(6) 10 CFR 50.34(b)
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 - Response to Final Safety Analysis Report (FSAR), Chapter 11 and Final Supplemental Environmental Impact Statement (FSEIS) Request For Additional Information - Supplemental
Reference:
- Response to Final Safety Analysis Report (FSAR), Chapter 11 and Final Supplemental Environmental Impact Statement (FSEIS) Request For Additional Information The purpose of this letter is to correct a value shown in a revised page for FSEIS, Table 3-23 provided in Reference 1. Reference 1 provided both a markup and a revised page for this Table 3-23. The Unit 2 Evaluation value of 6.66E+00 contained in the table markup was correct but the corresponding value in the table on the revised page was incorrectly shown as 6.66E+01 instead of 6.66E+00.
The enclosure provides the correction to the revised page along with adding the units for the values contained in the table. TVA apologies for any inconvenience that this error may have caused.
There are no new commitments provided in this letter. If you have any questions, please contact Bill Crouch at (423) 365-2004.
U.S. Nuclear Regulatory Commission Page 3 June 24, 2011 bcc (Enclosure):
Stephen Campbell U.S. Nuclear Regulatory Commission MS 08H4A One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 Charles Casto, 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 Watts Bar Nuclear Plant Revised FSEIS, Table 3-23 E-1
Completion and Operation of Watts Bar Nuclear Plant Unit 2 Table 3 Comparison of Estimated Annual Airborne Releases and Resulting Doses 1972 (Table 2.4-2)
Unit 1 FSAR Unit 2 Evaluation Units 1 & 2 Combined Unit 1 10-year Operational Average 10CFR50 Appendix I Guidelines per Unit Particulate Activity (Ci1) 3.00E-01 4.71E-01 4.71E-01 9.42E-01 9.29E-05 10 Noble Gas Activity (Ci1) 7.00E+03 4.84E+03 4.84E+03 9.68E+03 2.70E-03 N/A2 External Dose (mrad3) 6.60E+00 2.71E+00 3.50E+00 6.21E+00 3.69E-01 10 Organ Dose (mrem4) 3.50E+00 (inhalation and milk only) 9.41E+00 (all pathways) 9.15E+00 (all pathways) 1.86E+01 (all pathways) 8.30E-02 (all pathways) 15 1 Ci = Curies 2 N/A = Not Applicable 3 mrad = millirad 4 mrem = millirem Two conclusions can be drawn from the data in Table 3-20:
The Unit 2 FSAR estimates, even though based on very conservative (worst-case) assumptions, indicate that estimated doses continue to meet the per unit dose guidelines given in 10 CFR Part 50, Appendix I.
Historical WBN operational data for airborne effluents indicate that actual releases and resulting dose estimates (external and organ) to the public are a small fraction of the Appendix I guideline (averaging about 1 percent or less).
Based on these conclusions, the analyses of radiological impact from airborne release in the 1972 FES continue to be valid, and operation of WBN Unit 2 would not materially change the results.
Population Doses TVA has estimated the radiological impact from the normal operation of WBN Unit 2 using a 50-mile regional population projection for the year 2040 of 1,523,385. The estimated population doses are presented by the 1972 FES, the WBN Unit 1 FSAR, Unit 2, Unit 1 and Unit 2 totals, and recent historical data from WBN (as submitted in the annual radioactive Effluent Reports to the NRC) are presented in Table 3-23.
Table 3 Estimated Population Doses From Operation of Watts Bar Nuclear Plant (man-rem) 1972 (Table 2.4-4)
Unit 1 FSAR Unit 2 Evaluation Units 1 & 2 Combined Unit 1 10-year Operational Average 10 CFR 50 Appendix I Guidelines 3.10E+01 4.35E+00 6.66E+00 1.10E+01 3.38E-01 N/A 90 Final Supplemental Environmental Impact Statement