NRC E-mail from Jan Strasma to Anne Boland Et Al: Exelon News Release on Braidwood TritiumML061010745 |
Person / Time |
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Site: |
Braidwood ![Constellation icon.png](/w/images/b/be/Constellation_icon.png) |
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Issue date: |
12/29/2005 |
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From: |
Strasma J NRC/RGN-III |
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To: |
Boland A, Brenner E, Caldwell J, Combs T, Grant G, Peter Habighorst, Hayden E, House J, Steven Orth, Reynolds S, Raeann Shane, Richard Skokowski, Stephanie West NRC/RGN-II |
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References |
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FOIA/PA-2006-0115 |
Download: ML061010745 (3) |
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Category:E-Mail
MONTHYEARML23331A8922023-11-22022 November 2023 Supplement - Braidwood Security Rule Exemption Request ISFSI Docket No. Reference ML23321A2012023-11-17017 November 2023 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of Proposed Alternative for Examination of Pressurizer Circumferential and Longitudinal Shell-to-Head Welds and Nozzle-to-Vessel Welds (L-2023-LLR-0062) ML23311A1682023-11-0707 November 2023 NRR E-mail Capture - Constellation - Fleet Request - Acceptance of Proposed Alternative for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds and Nozzle Inside Radius Sections (L-2023-LLR-0053 and L-2023-LLR-005 ML23311A1692023-11-0707 November 2023 NRR E-mail Capture - Constellation - Fleet Request - Acceptance of Proposed Alternative for Examinations of Exam Categories B-B, B-D, and C-A SG Pressure Retaining Welds and Full Penetration Welded Nozzles (L-2023-LLR-0055 and L-2023-LLR-00 ML23304A0222023-10-30030 October 2023 NRR E-mail Capture - Final RCI - Constellation Energy Generation, LLC - Braidwood 1 & 2 - Exemption from Security Rule (L-2023-LLE-0030) ML23187A0092023-07-0606 July 2023 NRR E-mail Capture - NRC Acceptance Review of Byron and Braidwood Request to Adopt TSTF-370 ML23103A4692023-04-12012 April 2023 NRR E-mail Capture - NRC Acceptance Review of Braidwood Request for Amendment to Revise TS 3.7.9 ML23069A0332023-03-0606 March 2023 Email to K. Lueshen Byron and Braidwood Commitment 10 - Request for Additional Information Set 1 ML22354A2622022-12-20020 December 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of Request to Use Certain Provisions of the 2019 Edition of the ASME BPV Code, Section XI NRC-2100-2022, EN 55999 Valcor Coil Shell Assemblies Final Notification (004)2022-09-12012 September 2022 EN 55999 Valcor Coil Shell Assemblies Final Notification (004) ML22255A0132022-09-0909 September 2022 NRR E-mail Capture - NRC Acceptance Review of Braidwood, Byron, Calvert Cliffs, Ginna - License Amendment Request to Adopt TSTF-577 ML22200A0782022-07-19019 July 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request to Use Honeywell Mururoa V4F1 R Supplied Air Suits NRC 2110-2022, EN 55999 - Valcor Engineering Corporation (009)2022-07-18018 July 2022 EN 55999 - Valcor Engineering Corporation (009) ML22189A0602022-07-0707 July 2022 NRR E-mail Capture - Draft RAI for Byron/Braidwood TSTF-501 ML22136A2722022-05-16016 May 2022 NRR E-mail Capture - NRC Acceptance Review of Braidwood and Byron Adoption of TSTF-501 ML22129A0132022-05-0606 May 2022 NRR E-mail Capture - Draft RAIs for Requests for Alternatives I4R-17, I4R-23, ISI-05-018, I6R-10 ML22271A0772022-05-0606 May 2022 NRR E-mail Capture - Final RAIs 9.1.2021 Constellation Relief Request ML22116A0242022-04-25025 April 2022 NRR E-mail Capture - NRC Acceptance Review of Braidwood, Byron, and Ginna Request to Adopt TSTF-246 ML22105A0722022-04-15015 April 2022 NRR E-mail Capture - Braidwood/Byron Verbal Authorization for Proposed Alternative I4R-15/I4R-21 ML22091A0852022-04-0101 April 2022 NRR E-mail Capture - Braidwood and Byron - Final RAI Regarding Proposed Alternative for Various Pressurizer Welds (EPID L-2021-LLR-0035 and 0036) ML22088A1562022-03-0202 March 2022 NRR E-mail Capture - Byron, Braidwood, Calvert Cliffs, and Ginna - Non-acceptance of Application to Revise Technical Specifications 5.6.5.b, the Core Operating Limits Report (COLR) ML22091A0842022-02-24024 February 2022 NRR E-mail Capture - Braidwood and Byron - Withdrawal of Draft RAI Regarding Proposed Alternative for Various Pressurizer Welds (EPID L-2021-LLR-0035 and 0036) ML22041B5362022-02-10010 February 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Request for Additional Information Regarding Fleet License Amendment Request to Adopt TSTF-541 ML23089A0172022-01-0505 January 2022 NRR E-mail Capture - NRC Acceptance Review of Braidwood - Proposed Alternative for Examinations of Categories B-B, B-D, and C-A SG Welds and Nozzles ML21301A0672021-10-28028 October 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Acceptance of License Amendment Request to Adopt TSTF-541 ML21272A1492021-09-29029 September 2021 NRR E-mail Capture - NRC Acceptance Review of Braidwood and Byron - Proposed Alternative for Examinations of Category C-B Steam Generator Nozzle-to-Shell Welds and Nozzle Inside Radius Sections ML21256A1902021-09-10010 September 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21252A0172021-09-0303 September 2021 NRR E-mail Capture - NRC Acceptance Review - Braidwood - License Amendment to Revise Technical Specification 3.7.9, Ultimate Heat Sink ML21252A0042021-08-26026 August 2021 NRR E-mail Capture - NRC Acceptance Review - Braidwood/Byron/Clinton - Adoption of TSTF-273, Safety Function Determination Program Clarifications ML21215A3502021-08-0303 August 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Acceptance of License Amendment Request to Adopt TSTF-554 ML21189A1602021-07-0808 July 2021 NRR E-mail Capture - Request for Additional Information - Braidwood, Byron, and Ginna - Amendment to Address the Issues in Westinghouse NSALs ML21154A0162021-06-0202 June 2021 NRR E-mail Capture - NRC Acceptance Review of Braidwood - Proposed Alternative for Exam of Pzr Circumferential and Longitudinal Shell-to-Head Welds and Nozzle-to-Shell Welds ML21154A0112021-05-28028 May 2021 NRR E-mail Capture - Extension of Comment Period for the Exelon Generation Company, LLC License Transfer Application ML21154A0142021-05-28028 May 2021 NRR E-mail Capture - Extension of Comment Period for the Exelon Generation Company, LLC License Transfer Application ML21154A0132021-05-28028 May 2021 NRR E-mail Capture - Extension of Comment Period for the Exelon Generation Company, LLC License Transfer Application ML21144A2132021-05-24024 May 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21123A2442021-05-0303 May 2021 NRR E-mail Capture - NRC Acceptance Review of Braidwood/Byron/Ginna - Application to Address the Issues Identified in Westinghouse Documents NSAL-09-5 and NSAL-15-1 (L-2021-LLA-0066) ML21117A0442021-04-26026 April 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Proposed Fleet Alternative to Documentation Requirements for Pressure Retaining Bolting ML21084A2532021-03-24024 March 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Acceptance of License Transfer Application ML21062A0652021-03-0101 March 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative to Documentation Requirements for Pressure Retaining Bolting ML21049A2572021-02-18018 February 2021 Request for Additional Information Byron/Dresden Proposed Changes to Site Emergency Plans to Support Post-Shutdown and Permanently Defueled Conditions (EPID-2020-LLA-0240 & EPID-2020-LLA-0237) ML21033A8552021-02-0202 February 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Fleet Alternative Request to Expand the Use ASME Codes Cases N-878 and N-880 ML21029A3302021-01-29029 January 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Fleet Alternative Request to Use ASME Code Case N-885 ML21004A1452020-12-30030 December 2020 NRR E-mail Capture - Request for Additional Information Regarding Relief Requests Braidwood I4R-11 and Byron I4R-18 ML20350B5582020-12-14014 December 2020 NRR E-mail Capture - Exelon Generation Company, LLC -Alternative Request for Documentation of Replacement of Pressure Retaining Bolting ML20346A1012020-12-11011 December 2020 NRR E-mail Capture - Exelon Generation Company, LLC - Request for an Alternative to Use ASME Code Case N-893 (EPIDs L-2020-LLR-0147 and L-2020-LLR-0148) ML20289A1142020-10-0909 October 2020 NRR E-mail Capture - Preliminary RAIs for LAR Regarding Non-conservative TS EDG Frequency Tolerance ML20266G3032020-09-22022 September 2020 NRR E-mail Capture - Exelon Generation Company, LLC - Fleet Request to Use Paragraph IWA-5120 of the 2017 Edition of the ASME B&PV Code, Section XI ML20261H4122020-09-11011 September 2020 NRR E-mail Capture - (External_Sender) License Amendment to Braidwood Station, Units 1 and 2, Technical Specification 3.7.9, Ultimate Heat Sink ML21145A0572020-08-18018 August 2020 NRR E-mail Capture - NRC Acceptance Review for Braidwood Relief Request I4R-11 2023-07-06
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Text
John House - Exelon news release on Braidwood tritium Page 1 l From: Jan Strasma /
To: AnneBoland; EliotBrenner; ElizabethHayden; GeoffreyGrant; JamesCaldwell; John House; Peter Habighorst; Raeann Shane; Richard Skokowski; Steven Orth; Steven Reynolds; Steven West; Thomas Combs Date: 12/29/05 10:08AM
Subject:
- Exelon news release on Braidwood tritium AttacheJ is the news release on the status of the Braidwood tritium contamination which will be issued by Exelon at 11 a.m. CST (12 noon EST) today.
Jan Jan Strasma NRC Office of Public Affairs Region ll, Lisle IL PH630/8329-9663 FX630/51 5-1096 rjs2@nrc.gov CC: David McIntyre; Holly Harrington; James Lynch; Roland Lickus; Viktoria Mitlyng
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WJohn House - News Release - Braidwoodll.pdf _age 1l ExelDng.
News Release Nuclear
Contact:
Neal Miller FOR IMMEDIATE RELEASE Exelon Nuclear- Braidwood Station (o) 815-417-3184, (c) 815-994-6522 Braidwood Station Tritium Project Progresses Drinking water well tests showtno health or safetyrlsk BRACEVI LLE, 11. (Dec. 29, 2005) - Environmental workers at the Braidwood Generating Station have made progress in understanding the extent of tritium in groundwater discovered by the plant's environmental monitoring program in November.
Among the more important findings: tests fr other radioactive substances in the environment have been negative, and 13 of 14 private wells have shown no sign of tritium beyond background levels. The fourteenth private well showed tritium at a fraction of federal drinking water limits and poses no health or safety risk.
Tritium is an isotope of hydrogen that emits a very low level of radiation. It is produced naturally in the upper atmosphere when cosmic rays strike air molecules and is also produced in nuclear reactors. Tritium exists in water as an isotope of hydrogen - a basic component of water - and carries most of the characteristics of water.
The U.S. Environmental Protection Agency has established an upper limit for tritium concentration in drinking water of 20,000 picocuries per liter. By way of context, a person drinking 2 liters of water a day at that upper limit would receive an annual radiation exposure roughly equal to an airplane flight across the country, about 4 millirem. The average American receives 300 millirem of background exposure annually from natural and manmade sources.
The tritium is believed to come from an underground pipe that passes near the location of the highest tritium concentration. The pipe in the past has carried water containing diluted tritium from the plant to the Kankakee River, where it was periodically discharged under federal guidelines as part of normal plant operations. To ensure there are no current leaks, technicians are conducting a pipe integrity test. No tritiated water is currently in the pipe and no tritium is currently being introduced into the ground.
In the project to determine the extent of and mitigate tritium in groundwater at Braidwood:
- Technicians have analyzed 211 groundwater samples taken from 158 test wells both on and
-off the plant property and from a 25-acre pond just north of the station.
- The highest concentration of tritium discovered in both on- and off-site test wells was about 226,000 picocuries per liter, at the location where the tritium leak is believed to have occurred. This is in an area remote from private drinking water wells and does not represent a health or safety threat. To date, the next highest concentration found outside of the plant's
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boundaries was about 59,000 picocuries per liter, from a test well 75 feet north of the property line, the only other well off of the property to show tritium levels above federal drinking water limits. Water from the 25-acre pond measured 2,400 picocuries per liter.
- The Illinois Environmental Protection Agency notified Braidwood and Exelon Nuclear on Dec. 20 that tritium concentrations reported from two offsite wells, the 25-acre pond and five on-site test wells were in violation of the Illinois Environmental Protection Act. The station is required to provide the agency results of its ongoing investigation and plans to resolve the violations by early February.
- Thirteen of the 14 private drinking water wells near the plant showed no tritium above normal background levels. The remaining well showed a low level of tritium about 7 percent (1,524 picocuries per liter) of the federal drinking water limit.
- Tests of water samples from the private, monitoring and test wells showed no radionuclides present in the groundwater other than tritium. This was a standard isotopic test that looks for a range of possible station-produced and naturally occurring radioactive substances.
- Test wells have been drilled along the pipe at the locations of 11 "vacuum breakers" (three on the plant property, eight off), which are devices believed to have caused some past releases of tritiated water. Results from seven of the offsite locations showed no tritium concentrations beyond background. The remaining offsite location, in a remote area on company property 2V2 miles from the plant, showed a low level of tritium near the pipe (about 2,000 picocuries per liter), indicating a release there in the past. Additional wells are being dug for confirmatory tests.
- More than 20 full-time technical experts, environmental consultants and others have been assigned to complete the groundwater studies and oversee mitigation of the tritium.
"While the news is generally good and there is no health or safety threat, our goal and obligation is to eliminate this tritium in groundwater and to make sure no tritium is ever again allowed to go where it is not supposed to go," said Exelon Nuclear Vice President Keith Poison, the station's senior executive. "We will continue to work full speed to this end, we will keep everyone informed as we progress and we will take whatever steps necessary in the meantime to ensure the full confidence of our immediate neighbors."
A tritium fact sheet is available at http:llwww.epa.gov/radiation/radionuclides/tritium.htm Braidwood Generating Station is about 60 miles southwest of Chicago near Braceville, 111. The station's two nuclear energy units can produce a total of more than 2,300 megawatts at full power, enough electricity for more than 2 million homes.
Exelon Nuclear is a unit of Exelon Corporation, one of the nation's largest electric utilities with approximately 5.2 million customers and more than $14 billion in annual revenues. The company has one of the industry's largest portfolios of electricity generation capacity, with a nationwide reach and strong positions In the Midwest and Mid-Atlantic. Exelon distributes electricity to approximately5.2 million customers In northern Illinois and Pennsylvania andgas to rnore than 460,000 ctstomers In the Philadelphia area. Exelon is headquartered in Chicago and trades on the NY£ under the ticker EXC.