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| | number = ML14064A473 | | | number = ML14064A473 |
| | issue date = 03/12/2014 | | | issue date = 03/12/2014 |
| | title = Request for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, LRA - Set 20 (TAC Nos. MF0481, and MF0482) | | | title = Request for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, LRA - Set 20 |
| | author name = Plasse R A | | | author name = Plasse R |
| | author affiliation = NRC/NRR/DLR/RPB1 | | | author affiliation = NRC/NRR/DLR/RPB1 |
| | addressee name = Shea J | | | addressee name = Shea J |
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| | docket = 05000327, 05000328 | | | docket = 05000327, 05000328 |
| | license number = | | | license number = |
| | contact person = Sayoc E C, 415-4084 | | | contact person = Sayoc E, 415-4084 |
| | case reference number = TAC MF0481, TAC MF0482 | | | case reference number = TAC MF0481, TAC MF0482 |
| | document type = Letter, Request for Additional Information (RAI) | | | document type = Letter, Request for Additional Information (RAI) |
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| =Text= | | =Text= |
| {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. Joe Shea Nuclear Licensing Vice President Sequoyah Nuclear Plant Tennessee Valley Authority 1101 Market Street Chattanooga, TN 37 402 March 12, 2014 | | {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 March 12, 2014 Mr. Joe Shea Nuclear Licensing Vice President Sequoyah Nuclear Plant Tennessee Valley Authority 1101 Market Street Chattanooga, TN 37 402 |
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| ==SUBJECT:== | | ==SUBJECT:== |
| | REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION- SET 20 (TAC NOS. MF0481 AND MF0482) |
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| REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION-SET 20 (TAC NOS. MF0481 AND MF0482)
| | ==Dear Mr. Shea,== |
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| ==Dear Mr. Shea,==
| | By letter dated January 7, 2013, Tennessee Valley Authority submitted an application pursuant to Title 10 of the Code of Federal Regulations (CFR) Part 54, to renew the operating license DPR-77 and DPR-79 for Sequoyah Nuclear Plant, Units 1 and 2, for review by the US. Nuclear Regulatory Commission (NRC or the staff). The staff is reviewing the information contained in the license renewal application and has identified, in the enclosure, areas where additional information is needed to complete the review. |
| By letter dated January 7, 2013, Tennessee Valley Authority submitted an application pursuant to Title 1 0 of the Code of Federal Regulations (CFR) Part 54, to renew the operating license DPR-77 and DPR-79 for Sequoyah Nuclear Plant, Units 1 and 2, for review by the US. Nuclear Regulatory Commission (NRC or the staff). The staff is reviewing the information contained in the license renewal application and has identified, in the enclosure, areas where additional information is needed to complete the review. The request for additional information, outlined in the enclosure was discussed with Henry Lee, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me at 301-415-1427 or by e-mail at Richard.Ptasse@nrc.gov. | | The request for additional information, outlined in the enclosure was discussed with Henry Lee, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me at 301-415-1427 or by e-mail at Richard.Ptasse@nrc.gov. |
| Docket Nos. 50-327 and 50-328 | | Sincerely, Richard A. Plasse, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-327 and 50-328 |
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| ==Enclosure:== | | ==Enclosure:== |
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| Request for Additional Information cc w/encl: Listserv Sincerely, Richard A. Plasse, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation | | Request for Additional Information cc w/encl: Listserv |
| , March 12, 2014 Mr. Joe Shea Nuclear Licensing Vice President Sequoyah Nuclear Plant Tennessee Valley Authority 1101 Market Street Chattanooga, TN 37402
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| ==SUBJECT:==
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| REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION-SET 20 (TAC NOS. MF0481 AND MF0482)
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| | |
| ==Dear Mr. Shea,==
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| By letter dated January 7, 2013, Tennessee Valley Authority submitted an application pursuant to Title 10 of the Code of Federal Regulations (CFR) Part 54, to renew the operating license DPR-77 and DPR-79 for Sequoyah Nuclear Plant, Units 1 and 2, for review by the U.S. Nuclear Regulatory Commission (NRC or the staff). The staff is reviewing the information contained in the license renewal application and has identified, in the enclosure, areas where additional information is needed to complete the review. The request for additional information, outlined in the enclosure was discussed with Henry Lee, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me at 301-415-1427 or by e-mail at Richard.Piasse@nrc.gov.
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| Docket Nos. 50-327 and 50-328
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| ==Enclosure:==
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| Request for Additional Information cc w/encl: Listserv DISTRIBUTION:
| | ' ML14064A473 *concurred via email OFFICE LA:RPB1 :DLR PM:RPB1 :DLR BC:RPB1 :DLR PM: RPB1:DLR NAME I Kino E Savoc Y Diaz-Sanabria R Plasse DATE 3/7/2014 3/11/2014 3/11/2014 3/1/2014 Letter to J. Carlin from R. Plasse dated March XX, 2014 |
| See next page ADAMS Accession No' ML 14064A473
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| .. Sincerely, IRA! Richard A Plasse, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation
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| *concurred via email OFFICE LA:RPB1 :DLR PM:RPB1 :DLR BC:RPB1 :DLR PM: RPB1:DLR NAME I Kino E Savoc Y Diaz-Sanabria R Plasse DATE 3/7/2014 3/11/2014 3/11/2014 3/1/2014 OFFICIAL RECORD COPY Letter to J. Carlin from R. Plasse dated March XX, 2014 | |
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| ==SUBJECT:== | | ==SUBJECT:== |
| | REQUESTS FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION- SET 20 (TAC NOS. MF0481 AND MF0482) |
| | DISTRIBUTION HARDCOPY: |
| | DLR RF E-MAIL: |
| | PUBLIC RidsNrrDir Resource RidsNrrDirRpb1 Resource RidsNrrDirRpb2 Resource RidsNrrDirRerb Resource RidsNrrDirRarb Resource RidsNrrDirRasb Resource beth.mizuno@nrc.gov brian. harris@nrc.gov john.pelchat@nrc.gov gena.woodruff@nrc.gov siva.lingam@nrc.gov wesley.deschaine@nrc.gov galen.smith@nrc.gov scott. shaeffer@nrc.gov jeffrey.hamman@nrc.gov craig.kontz@nrc.gov caudle.julian@nrc.gov generette.lloyd@epa.gov gmadkins@tva.gov clwilson@tva.gov hleeO@tva.gov dllundy@tva.gov |
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| REQUESTS FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION-SET 20 (TAC NOS. MF0481 AND MF0482) DISTRIBUTION HARDCOPY:
| | SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION REQUEST FOR ADDITIONAL INFORMATION RAI 8.1.13-4 |
| DLR RF E-MAIL: PUBLIC RidsNrrDir Resource RidsNrrDirRpb1 Resource RidsNrrDirRpb2 Resource RidsNrrDirRerb Resource RidsNrrDirRarb Resource RidsNrrDirRasb Resource beth.mizuno@nrc.gov brian. harris@nrc.gov john.pelchat@nrc.gov gena.woodruff@nrc.gov siva.lingam@nrc.gov wesley.deschaine@nrc.gov galen.smith@nrc.gov scott. shaeffer@nrc.gov jeffrey.hamman@nrc.gov craig.kontz@nrc.gov caudle.julian@nrc.gov generette.lloyd@epa.gov gmadkins@tva.gov clwilson@tva.gov hleeO@tva.gov dllundy@tva.gov SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION REQUEST FOR ADDITIONAL INFORMATION RAI 8.1.13-4
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| ==Background:== | | ==Background:== |
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| The response to request for additional information (RAI) 3.0.3-1 Request 4b, dated January 16, 2014, states that nonintrusive techniques (e.g., volumetric testing) will be used in lieu of conducting flow testing or internal inspections to detect flow blockage, and an ultrasonic testing (UT) technique has been demonstrated on the essential raw cooling water (ERCW) system to detect flow blockage due to silt and clams. Issue: The staff lacks sufficient information to conclude that the UT technique can effectively detect flow blockage caused by corrosion product buildup. | | The response to request for additional information (RAI) 3.0.3-1 Request 4b, dated January 16, 2014, states that nonintrusive techniques (e.g., volumetric testing) will be used in lieu of conducting flow testing or internal inspections to detect flow blockage, and an ultrasonic testing (UT) technique has been demonstrated on the essential raw cooling water (ERCW) system to detect flow blockage due to silt and clams. |
| | Issue: |
| | The staff lacks sufficient information to conclude that the UT technique can effectively detect flow blockage caused by corrosion product buildup. |
| Request: | | Request: |
| For the requests below, ensure that the response addresses each sub-bullet. | | For the requests below, ensure that the response addresses each sub-bullet. |
| : 1. Provide a detailed description of the UT procedure that will be used to detect obstructions. | | : 1. Provide a detailed description of the UT procedure that will be used to detect obstructions. |
| : a. What UT techniques are used to identify flow blockage in the ERCW system (e.g., 0 degree, guided wave)? b. Is the procedure automated or manual? c. What are the limits on the thickness, | | : a. What UT techniques are used to identify flow blockage in the ERCW system (e.g., 0 degree, guided wave)? |
| : diameter, product form (e.g., straight pipe, elbows, tees) for the procedure?
| | : b. Is the procedure automated or manual? |
| : 2. Describe the qualification requirements for personnel and procedures. | | : c. What are the limits on the thickness, diameter, product form (e.g., straight pipe, elbows, tees) for the procedure? |
| : a. What are the personnel qualification requirements? | | : 2. Describe the qualification requirements for personnel and procedures. |
| : b. What are the requirements for requalification (how often, what method, etc.)? c. What are the procedure requirements? | | : a. What are the personnel qualification requirements? |
| : d. What procedure controls are in place to control essential variables for the procedure (e.g., equipment, frequency, bandwidth)? | | : b. What are the requirements for requalification (how often, what method, etc.)? |
| : 3. Describe the practical demonstration performed on the ERCW system in detail. a. How many tests were conducted during the demonstration process? | | : c. What are the procedure requirements? |
| : b. How many different sizes of pipe were tested? c. What adverse conditions were tested for in the demonstration (e.g. blockage, wall thinning, corrosion)? | | : d. What procedure controls are in place to control essential variables for the procedure (e.g., equipment, frequency, bandwidth)? |
| : d. Were there any false negatives or false positives during demonstration testing? | | : 3. Describe the practical demonstration performed on the ERCW system in detail. |
| : Quantify, if applicable.
| | : a. How many tests were conducted during the demonstration process? |
| : 4. Describe the results of the field inspections conducted using this UT procedure. | | : b. How many different sizes of pipe were tested? |
| : a. How much ERCW system piping has been examined (approximate number of feet) subsequent to the demonstration testing? | | : c. What adverse conditions were tested for in the demonstration (e.g. blockage, wall thinning, corrosion)? |
| : b. How many tests in the subsequent field inspections have detected flow blockage? | | : d. Were there any false negatives or false positives during demonstration testing? |
| : c. Have there been any false negatives or false positives during the field examination? | | Quantify, if applicable. |
| : Quantify, if applicable.
| | : 4. Describe the results of the field inspections conducted using this UT procedure. |
| | : a. How much ERCW system piping has been examined (approximate number of feet) subsequent to the demonstration testing? |
| | : b. How many tests in the subsequent field inspections have detected flow blockage? |
| | : c. Have there been any false negatives or false positives during the field examination? Quantify, if applicable. |
| ENCLOSURE}} | | ENCLOSURE}} |
Letter Sequence RAI |
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Results
Other: CNL-15-095, Revision to the Reactor Pressure Vessel Surveillance Capsule Withdrawal Schedule for License Renewal, CNL-15-164, Second Annual Update, License Renewal Application, CNL-15-178, License Renewal Application - Clarifications (TAC Nos. MF0481 and MF0482), ML13032A251, ML13057A873, ML13067A201, ML13141A320, ML15236A067
|
MONTHYEARML13024A0042013-01-0707 January 2013
Transmittal of License Renewal Application
Project stage: Request
ML13032A2512013-01-10010 January 2013
Reactor Pressure Vessel Surveillance Capsule Withdrawal Schedule Revision Due to License Renewal Amendment
Project stage: Other
ML13057A8732013-03-0808 March 2013
Plan for the Scoping and Screening Regulatory Audit Regarding the Sequoyah Nuclear Plant, Unit 1 and 2, LRA Review
Project stage: Other
ML13067A2012013-03-11011 March 2013
Plan for the Aging Management Program Regulatory Audit Regarding the Sequoyah Nuclear Plant, Units 1 and 2 License Renewal Application Review (TAC Nos. MF0481 and MF0482)
Project stage: Other
ML13109A5152013-04-26026 April 2013
Requests for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application (TAC Nos. MF0481 and MF0482)
Project stage: RAI
ML13122A3402013-05-0808 May 2013
RAI for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application (TAC Nos. MF0481 and MF0482)
Project stage: RAI
ML13119A0972013-05-21021 May 2013
Summary of Telephone Conference Call Held on April 22, 2013 Between the U.S. Nuclear Regulatory Commission and Tva,Concerning Requests for Additional Information Pertaining to the Sequoyah Nuclear Plant, License Renewal Application
Project stage: RAI
ML13142A3322013-05-21021 May 2013
Requests for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application (TAC Nos. MF0481 and MF0482)
Project stage: RAI
ML13128A5192013-05-31031 May 2013
Request for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application
Project stage: RAI
ML13134A2012013-06-0505 June 2013
RAI for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, LRA
Project stage: RAI
ML13163A4422013-06-0707 June 2013
Response to NRC Request for Additional Information Regarding the Scoping and Screening Methodology Review of the License Renewal Application, Set 3
Project stage: Response to RAI
ML13144A7122013-06-11011 June 2013
Requests for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application (Tac Nos. MF0481 and MF0482)- Set 6
Project stage: RAI
ML13134A3712013-06-13013 June 2013
5/9/2013 Summary of Telephone Conference Call Between the U.S. Nuclear Regulatory Commission and Tennessee Valley Authority, Concerning Requests for Additional Information Pertaining to the Sequoyah Nuclear Plant, Units 1 and 2, License Ren
Project stage: RAI
ML13141A3202013-06-13013 June 2013
Letter Aging Management Programs Audit Report Regarding the Sequoyah Nuclear Plant, Units 1 and 2
Project stage: Other
ML13150A4122013-06-24024 June 2013
Requests for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application (TAC Nos. MF0481 and MF0482) - Set 8
Project stage: RAI
ML13178A2832013-06-25025 June 2013
Response to NRC Request for Additional Information Regarding the Reactor Vessel Internals Review of the License Renewal Application, Set 1
Project stage: Response to RAI
ML13158A0162013-06-25025 June 2013
Requests for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application (TAC Nos. MF0481 and MF0482) Set 9
Project stage: RAI
ML13190A2762013-07-0101 July 2013
Response to NRC Request for Additional Information Regarding the Review of the License Renewal Application, Set 4
Project stage: Response to RAI
ML13192A3302013-07-0303 July 2013
Response to NRC Request for Additional Information Regarding the Review of License Renewal Application, Set 5 (TAC Nos. MF0481 and MF0482)
Project stage: Response to RAI
ML13204A3992013-07-11011 July 2013
Response to NRC Request for Additional Information Re Reactor Vessel Internals Review of the License Renewal Application, Set 6
Project stage: Response to RAI
ML13213A0262013-07-25025 July 2013
Response to NRC Request for Additional Information Regarding the Review of License Renewal Application, Set 4/Buried Piping, Set 8, and Set 9 (TAC MF0481 and MF0482)
Project stage: Response to RAI
ML13213A0272013-07-29029 July 2013
Response to NRC Request for Additional Information Regarding the Review of License Renewal Application, Set 7 (TAC Nos. MF0481 and MF0482)
Project stage: Response to RAI
ML13213A0142013-07-30030 July 2013
Revised Response to NRC Request for Additional Information Regarding the Review of the License Renewal Application, Sets 1 and 3 (TAC MF0481 and MF0482)
Project stage: Response to RAI
ML13171A0362013-08-0101 August 2013
Summary of Telephone Conference Call Held on June 13, 2013, Between the NRC and Tennessee Valley Authority, Concerning RAI Pertaining to the Sequoyah Nuclear Plant, Units 1 and 2, LRA
Project stage: RAI
ML13204A2572013-08-0202 August 2013
Requests for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application (TAC Nos. MF0481 and MF0482) - Set 10
Project stage: RAI
ML13225A3872013-08-0909 August 2013
Response to NRC Request for Additional Information Regarding the Review of the Sequoyah Nuclear Plant, Units I and 2, License Renewal Application, Sets 1, 6, 7, and Revised Responses for 1.4-2, 1.4-3 and 1.4-4 (TAC Nos. MF0481 and MF0482)
Project stage: Response to RAI
ML13224A1262013-08-22022 August 2013
RAI for Review of Sequoyah, Units 1 & 2 License Renewal Application - Set 11
Project stage: RAI
ML13238A2442013-08-30030 August 2013
RAI Set 12
Project stage: RAI
ML13252A0362013-09-0303 September 2013
Response to NRC Request for Additional Information Regarding the Review of the License Renewal Application, Set 10 (30-day), B.1.9-1, B.1.4-4 Revised RAI Responses and Revision to LRA Page 2.4-44 (TAC Nos. MF0481 and MF0482)
Project stage: Response to RAI
ML13226A3712013-09-10010 September 2013
Summary of Telephone Conference Call Held on August 1, 2013, Between the U.S. Nuclear Regulatory Commission and Tennessee Valley Authority, Concerning Requests for Additional Information Pertaining to the Sequoyah Nuclear Plant, Units 1
Project stage: RAI
ML13267A1592013-09-20020 September 2013
Response to NRC Request for Additional Information Regarding the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application, Set 11 (30-day), and Revised RAI Responses for B.1.14-1a, 2.5.
Project stage: Response to RAI
ML13247A4272013-09-23023 September 2013
Summary of Telephone Conference Call Held on August 19, 2013, Between the NRC and Tennessee Valley Authority, Concerning RAI Pertaining to the Sequoyah Nuclear Plant, Units 1 and 2, LRA
Project stage: RAI
ML13263A3382013-09-26026 September 2013
RAI Set 14
Project stage: RAI
ML13268A4922013-09-27027 September 2013
RAI Set 15
Project stage: RAI
ML13276A0182013-09-30030 September 2013
Response to NRC Request for Additional Information Regarding the Review of the License Renewal Application, Sets 10 (B.1.23-2a), 11 (4.1-8a), and 12 (30-day)
Project stage: Response to RAI
CNL-13-103, Response to NRC Request for Additional Information Regarding the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application, Sets 8 (B.1.33-1), 10 (3.0.3-1 Request 1), 12 (B.1.23-2b), 13 (30-day), 14 (B.0.4-1a)2013-10-17017 October 2013
Response to NRC Request for Additional Information Regarding the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application, Sets 8 (B.1.33-1), 10 (3.0.3-1 Request 1), 12 (B.1.23-2b), 13 (30-day), 14 (B.0.4-1a)
Project stage: Response to RAI
ML13282A3302013-10-18018 October 2013
RAI Set 16
Project stage: RAI
CNL-13-104, Response to NRC Request for Additional Information Regarding the Review of License Renewal Application, Sets 11 (B.1.40-4a, B.1.25.1a), 13 (B.1.41-4a),14 (3.5.1-57, 3.5.1-87)2013-10-21021 October 2013
Response to NRC Request for Additional Information Regarding the Review of License Renewal Application, Sets 11 (B.1.40-4a, B.1.25.1a), 13 (B.1.41-4a),14 (3.5.1-57, 3.5.1-87)
Project stage: Response to RAI
CNL-13-105, Response to NRC Request for Additional Information Regarding Review of the License Renewal Application, Sets 10 (3.0.3-1, Requests 3, 4, 6), 12 (B.1.6-1b, B.1.6-2b), 16 (4.3.1-8a)2013-11-0404 November 2013
Response to NRC Request for Additional Information Regarding Review of the License Renewal Application, Sets 10 (3.0.3-1, Requests 3, 4, 6), 12 (B.1.6-1b, B.1.6-2b), 16 (4.3.1-8a)
Project stage: Response to RAI
CNL-13-106, Response to NRC Request for Additional Information Regarding the Review of the Sequoyah Nuclear Plant, Units I and 2, License Renewal Application, Sets 13 (B.1.34-5a), 15 (4.2-1a), 16 (B.1.23-2c), 17 (B.1.23-2d), LRA Sections A.1.34 and B2013-11-15015 November 2013
Response to NRC Request for Additional Information Regarding the Review of the Sequoyah Nuclear Plant, Units I and 2, License Renewal Application, Sets 13 (B.1.34-5a), 15 (4.2-1a), 16 (B.1.23-2c), 17 (B.1.23-2d), LRA Sections A.1.34 and B.1
Project stage: Response to RAI
ML13323A0972013-12-0606 December 2013
RAI Set 18
Project stage: RAI
CNL-13-130, Response to NRC Request for Additional Information Regarding the Review of the License Renewal Application, B.1.41-4b, 3.0.3-1 (Requests La, 3a, 4a, 6a), B.1.23-2e, 3.4.2.1.1-2a, Tables (3.4.1, 3.4.2-3-5, 3.3.1..2013-12-16016 December 2013
Response to NRC Request for Additional Information Regarding the Review of the License Renewal Application, B.1.41-4b, 3.0.3-1 (Requests La, 3a, 4a, 6a), B.1.23-2e, 3.4.2.1.1-2a, Tables (3.4.1, 3.4.2-3-5, 3.3.1..
Project stage: Response to RAI
ML13353A5382013-12-23023 December 2013
RAI Set 19
Project stage: RAI
ML13338A3332014-01-0808 January 2014
Summary of Telephone Conference Call Held on August 22, 2013, Between the U.S. Nuclear Regulatory Commission and Tennessee Valley Authority, Concerning Requests for Additional Information Pertaining to the Sequoyah Nuclear Plant, Units 1 an
Project stage: RAI
CNL-14-021, Response to Request for Clarification to NRC Request for Additional Information Re Review of License Renewal Application, LRA B.1.31, B.1.25.1b, B.1.34-8a, B.1.34-9A, LRA Annual Update (TAC MF0481 & MF0482)2014-03-0303 March 2014
Response to Request for Clarification to NRC Request for Additional Information Re Review of License Renewal Application, LRA B.1.31, B.1.25.1b, B.1.34-8a, B.1.34-9A, LRA Annual Update (TAC MF0481 & MF0482)
Project stage: Supplement
ML14059A3472014-03-0404 March 2014
Schedule Revision for the Review of the Sequoyah Nuclear Plant License Renewal Application (TAC Nos. MF0481 and MF0482)
Project stage: Approval
ML14063A5422014-03-0404 March 2014
TVA Response to Request for Clarification to NRC Request for Additional Information Regarding the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application, LRA B.1.31, B.1.25.1 B, B.1.34-Sa, B.1.34-9a, LRA Annual ...
Project stage: Supplement
ML14064A4732014-03-12012 March 2014
Request for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, LRA - Set 20
Project stage: RAI
ML14094A2942014-04-11011 April 2014
Project Manager Change for the Safety Review of the Sequoyah Nuclear Plant, Units 1 & 2, License Renewal Application (TAC Nos. MF0481 & MF0482)
Project stage: Approval
CNL-14-052, TVA Response to NRC Request for Additional Information Regarding the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application: RAIs B.1.13-4 and 3.0.3-1-3c, Commitment 9.G, and 2013 LRA Annual Update (TAC Nos. MF042014-04-22022 April 2014
TVA Response to NRC Request for Additional Information Regarding the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application: RAIs B.1.13-4 and 3.0.3-1-3c, Commitment 9.G, and 2013 LRA Annual Update (TAC Nos. MF0481
Project stage: Response to RAI
2013-07-01
[Table View] |
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Category:Letter
MONTHYEARML24032A0202024-01-31031 January 2024
NPDES Biocide/Corrosion Treatment Plan Annual Report, Cy 2023
ML23319A2452024-01-29029 January 2024
Issuance of Amendment Nos. 366 and 360; 164 and 71 Regarding the Adoption of TSTF-567, Revision 1, Add Containment Sump TS to Address GSI-191 Issues
CNL-24-017, Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure and Emergency Preparedness Department Procedure Revisions2024-01-17017 January 2024
Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure and Emergency Preparedness Department Procedure Revisions
ML24018A0142024-01-17017 January 2024
Engine Systems, Inc., Report No. 10CFR21-0137, Rev. 1, 56913-EN 56913
ML24011A3182024-01-11011 January 2024
Submittal of Discharge Monitoring Report (Dmr), October 2023
ML24011A3172024-01-11011 January 2024
Submittal of Discharge Monitoring Report (Dmr), September 2023
ML24011A3202024-01-11011 January 2024
Submittal of Discharge Monitoring Report (Dmr), December 2023
ML24011A3162024-01-11011 January 2024
Submittal of Discharge Monitoring Report (Dmr), August 2023
ML24011A3192024-01-11011 January 2024
Submittal of Discharge Monitoring Report (Dmr), November 2023
IR 05000327/20234422024-01-11011 January 2024
95001 Supplemental Inspection Report 05000327/2023442 and 05000328/2023442 and Follow-Up Assessment Letter
ML24010A2132024-01-10010 January 2024
CFR 21.21 Final Report Regarding Siemens Medium Voltage Circuit Breakers
ML24018A0952024-01-0404 January 2024
Engine Systems, Inc., 10CFR21 Reporting of Defects and Non-Compliance Report No. 10CFR21-0137, Rev. 0
ML24004A0332024-01-0303 January 2024
Interim Report of a Deviation or Failure to Comply Crompton Instruments Type 077 Ammeter
ML24004A0402024-01-0303 January 2024
Response to NRCs November 8, 2023, Request for Additional Information - Related to Independent Spent Fuel Storage Installation
CNL-23-068, Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-12-21021 December 2023
Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation
CNL-23-036, Application to Revise Function 5 of Technical Specification Table 3.3.2-1, Engineered Safety Feature Actuation System Instrumentation, for the Sequoyah Nuclear Plant and Watts Bar Nuclear Plant (SQN-TS-23-02 and WBN-TS-23-08)2023-12-18018 December 2023
Application to Revise Function 5 of Technical Specification Table 3.3.2-1, Engineered Safety Feature Actuation System Instrumentation, for the Sequoyah Nuclear Plant and Watts Bar Nuclear Plant (SQN-TS-23-02 and WBN-TS-23-08)
ML23346A1222023-12-12012 December 2023
Annual Non-Radiological Environmental Operating Report - 2023
IR 05000327/20234202023-11-28028 November 2023
Security Baseline Inspection Report 05000327/2023420 and 05000328/2023420
CNL-23-067, Central Emergency Control Center Emergency Plan Implementing Procedure Revisions2023-11-27027 November 2023
Central Emergency Control Center Emergency Plan Implementing Procedure Revisions
ML23324A4362023-11-0909 November 2023
Exam Corporate Notification Letter Aka 210-day Letter
ML23307A0822023-11-0808 November 2023
Request for Additional Information August 4, 2022, Exemption Request for Deviating from the Conditions of Certificate of Compliance No. 1032, Amendment No. 3, Related to Sequoyah Nuclear Plant Independent Spent Fuel Storage Installation
IR 05000327/20230032023-11-0303 November 2023
Integrated Inspection Report 05000327/2023003 and 05000328/2023003
ML23306A1592023-11-0202 November 2023
Enforcement Action EA-22-129 Inspection Readiness Notification
ML23292A0792023-10-19019 October 2023
Tennessee Valley Authority - Emergency Plan Implementing Procedure Revision, Includes EPIP-5, Revision 58, General Emergency
IR 05000327/20230112023-10-16016 October 2023
Triennial Fire Protection Inspection Report 05000327/2023011 and 05000328/2023011
ML23285A0882023-10-12012 October 2023
Submittal of Sequoyah Nuclear Plant, Units 1 and 2, Submittal of Updated Final Safety Analysis Report Amendment 31
ML23284A4252023-10-11011 October 2023
10 CFR 50.59 and 10 CFR 72.48 Changes, Tests, and Experiments Summary Report; Commitment Summary Report; and Update to the Fire Protection Report
ML23283A2792023-10-10010 October 2023
Revisions to the Sequoyah Nuclear Plant Units 1 and 2 Technical Requirements Manual
ML23279A0612023-10-0505 October 2023
Paragon Energy Solutions LLC, Part 21 Final Report Re Potential Defect with Eaton Jd and Hjd Series Molded Case Circuit Breakers (Mccbs)
ML23277A0462023-10-0404 October 2023
Revisions to the Sequoyah Nuclear Plant Units 1 and 2 Technical Specification Bases
ML23275A0272023-09-29029 September 2023
Submittal of Discharge Monitoring Report (DMR) Quality Assurance Study 43 Final Report 2023
ML23271A1662023-09-28028 September 2023
Registration of Spent Fuel Storage Cask Pursuant to 10 CFR 72.212(b)(2)
CNL-23-059, Supplement to Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 2, Application to Revise Technical Specifications to Adopt TSTF-567-A, Revision 1, Add Containment Sump TS to Address GSI-191 Issues (SQN-TS-23-2023-09-20020 September 2023
Supplement to Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 2, Application to Revise Technical Specifications to Adopt TSTF-567-A, Revision 1, Add Containment Sump TS to Address GSI-191 Issues (SQN-TS-23-03
CNL-23-061, Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure Revision2023-09-20020 September 2023
Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure Revision
IR 05000327/20234032023-09-14014 September 2023
Cyber Security Inspection Report 05000327/2023403 and 05000328/2023403 (Cover Letter)
ML23257A0062023-09-14014 September 2023
Enforcement Action EA-22-129 Inspection Postponement Request
ML23254A2192023-09-11011 September 2023
Emergency Plan Implementing Procedure Revisions
ML23254A0652023-09-0707 September 2023
Registration of Spent Fuel Storage Cask Pursuant to 10 CFR 72.212(b)(2)
CNL-23-057, Central Emergency Control Center Emergency Plan Implementing Procedure Revisions. Includes CECC-EPIP-1, Revision 76 and CECC-EPIP-9, Revision 642023-09-0505 September 2023
Central Emergency Control Center Emergency Plan Implementing Procedure Revisions. Includes CECC-EPIP-1, Revision 76 and CECC-EPIP-9, Revision 64
IR 05000327/20230052023-08-29029 August 2023
Updated Inspection Plan for Sequoyah Nuclear Plant, Units 1 and 2 - Report 05000327/2023005 and 05000328/2023005
ML23233A0122023-08-17017 August 2023
Unit 1 Cycle 25 Refueling Outage - 90-Day Inservice Inspection Summary Report - Supplement
ML23233A0142023-08-15015 August 2023
Discharge Monitoring Report (Dmr), July 2023
ML23215A1212023-08-0303 August 2023
301 Exam Administrative Items (2B) Normal Release
ML23215A1572023-08-0303 August 2023
Enforcement Action EA-22-129 Inspection Readiness Notification
CNL-23-028, Application to Revise Technical Specifications to Adopt TSTF-567-A, Revision 1, Add Containment Sump TS to Address GSI-191 Issues (SQN-TS-23-03 and WBN-TS-23-06)2023-08-0202 August 2023
Application to Revise Technical Specifications to Adopt TSTF-567-A, Revision 1, Add Containment Sump TS to Address GSI-191 Issues (SQN-TS-23-03 and WBN-TS-23-06)
ML23192A4472023-07-31031 July 2023
Staff Assessment of Updated Seismic Hazards at TVA Sites Following the NRC Process for the Ongoing Assessment of Natural Hazards Information
2024-01-04
[Table view]
Category:Request for Additional Information (RAI)
MONTHYEARML23307A0832023-11-0808 November 2023
Enclosure - Request for Additional Information HDI-Sequoyah NDE Exemption Request 10-30-2023
ML23307A0822023-11-0808 November 2023
Request for Additional Information August 4, 2022, Exemption Request for Deviating from the Conditions of Certificate of Compliance No. 1032, Amendment No. 3, Related to Sequoyah Nuclear Plant Independent Spent Fuel Storage Installation
ML23062A5952023-02-27027 February 2023
Staff follow-up Questions to Tva'S 12/19/2022 Response of the Staff'S Rsi Regarding 08/04/2022 SQN Exemption Request
ML23062A5942023-02-27027 February 2023
Enclosure - NRC SQN Exemption Rsi Response Staff Follow Up Questions
ML22343A0692022-12-0808 December 2022
NRR E-mail Capture - Request for Additional Information - Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 2, License Amendment Request to Revise Technical Specification 3.4.12 (L-2022-LLA-0103)
ML22257A0622022-09-14014 September 2022
Requalification Program Inspection - Sequoyah Nuclear Plant
ML22255A0842022-09-0909 September 2022
Document Request for Sequoyah Nuclear Plant - Radiation Protection Inspection - Inspection Report 2022-04
ML22227A0272022-08-11011 August 2022
NRR E-mail Capture - Request for Additional Information Related to Alternative Requests RP-11 for Sequoyah Nuclear Plant, Units 1 and 2, and IST-RR-9 for Watts Bar Nuclear Plant, Units 1 and 2
ML22214A1582022-08-0202 August 2022
NRR E-mail Capture - Request for Additional Information for Sequoyah Units 1 and 2 License Amendment Request for Fire and Seismic PRA Modification to 10 CFR 50.69 (L-2022-LLA-0033)
ML22151A0102022-05-27027 May 2022
NRR E-mail Capture - Revised Request for Additional Information Re Sequoyah Nuclear Plant Alternative Request RV-02
ML22151A0092022-05-26026 May 2022
NRR E-mail Capture - Request for Additional Information Re Sequoyah Nuclear Plant Alternative Request RV-02
ML22146A3322022-05-26026 May 2022
NRR E-mail Capture - Request for Additional Information Related to Sequoyah Nuclear Plant'S LAR to Adopt TSTF-505
ML22144A1002022-05-12012 May 2022
NRR E-mail Capture - Request for Additional Information Related to Tva'S Request to Revised the TVA Plants' Radiological Emergency Plans
ML21237A4952021-08-25025 August 2021
Document Request for Sequoyah Nuclear Plant - Radiation Protection Inspection - Inspection Report 2021-04
ML21160A0352021-06-0303 June 2021
Document Request for Sequoyah Nuclear Plant - Radiation Protection Inspection - Inspection Report 2021-03
ML21095A0482021-04-0505 April 2021
NRR E-mail Capture - Sequoyah Nuclear Plant, Units 1 and 2 - Request for Additional Information Regarding Request to Transition to Westinghouse Fuel
ML21092A0972021-04-0202 April 2021
Notification of Inspection and Request for Information for NRC Problem Identification and Resolution Inspection
ML20259A4782020-09-15015 September 2020
Emergency Preparedness Program Inspection Request for Information
ML20261H4172020-09-14014 September 2020
NRR E-mail Capture - Sequoyah Nuclear Plant, Units 1 and 2 - Request for Additional Information Regarding Hydrologic UFSAR Update
ML20261H4162020-09-0202 September 2020
NRR E-mail Capture - Draft Request for Additional Information - Sequoyah Nuclear Plant, Units 1 and 2, Request to Revise UFSAR Hydrologic Analysis
ML20189A2112020-07-0101 July 2020
Request for Additional Information Regarding Hydrologic UFSAR Update
ML20106F1042020-04-14014 April 2020
Request for Additional Information Regarding the Hydrologic Analysis LAR
ML20161A3902020-04-0909 April 2020
Request for Supporting Information for the Sequoyah SPRA Audit Review - Follow-up to Plant Response Question 5
ML20098D8612020-04-0707 April 2020
Notification of an NRC Fire Protection Team Inspection (FPTI) (NRC Inspection Report 05000327/2020012 and 05000328/2020012) and Request for Information)
ML20036E2842020-02-0505 February 2020
20200123 - Sequoyah Radiation Safety Inspection Document Request Letter
ML19323D7562019-11-18018 November 2019
Nrc'S Request for Additional Information - Exigent Amendment
ML19235A0992019-08-22022 August 2019
Emergency Preparedness Program Inspection Request for Information
ML19162A2462019-06-11011 June 2019
RP Inspection Document Request 2019-03
ML19149A6222019-05-29029 May 2019
NRR E-mail Capture - Request for Additional Information - Sequoyah Nuclear Plant, Units 1 and 2, Request for Alternative to 18-ISI-1 EPID: L-2019-LLR-0006
ML19148A7912019-05-28028 May 2019
NRR E-mail Capture - Sequoyah Nuclear Plant and Watts Bar Nuclear Plant - Final Request for Additional Information Related to Request for Alternative to OM Code Requirements
ML19015A4192019-01-15015 January 2019
NRR E-mail Capture - RAI - Sequoyah Nuclear Plant, Units 1 and 2, LAR to Adopt 10 CFR50.69 Risk-informed SSC
ML18344A0752018-12-10010 December 2018
NRR E-mail Capture - Request for Additional Information - Sequoyah 1 and 2, Request to Modify Essential Raw Cooling Water Motor Control Center Breakers and to Revise Updated Final Analysis Report (SQN-TS-17-04)
ML18296A0022018-10-22022 October 2018
NRR E-mail Capture - Additional Information Needs - Sequoyah Units 1 and 2, Request to Modify Essential Raw Cooling Water Motor Control Center Breakers Revise Updated Final Analysis Report (SQN-TS-17-04)
ML18283B0592018-10-10010 October 2018
NRR E-mail Capture - Additional Information Needs Identified During Audit - Sequoyah 1 and 2, Request to Modify Essential Raw Cooling Water Motor Control Center Breakers Revise Updated Final Analysis Report (SQN-TS-17-04)
ML18283A6232018-09-25025 September 2018
04 RP Inspection Document Request
ML18233A1942018-08-21021 August 2018
NRR E-mail Capture - Additional Information Needs Identified - Sequoyah 1 and 2, Request to Modify Essential Raw Cooling Water Motor Control Center Breakers and to Revise Updated Final Analysis Report (SQN-TS-17-04)
ML18138A1102018-05-17017 May 2018
Enclosurequest for Additional Information (Letter to E. D. Schrull Request for Additional Information Regarding Tennessee Valley Authority'S Decommissioning Funding Plan Update for Browns Ferry and Sequoyah Isfsis)
ML18057A6372018-02-23023 February 2018
NRR E-mail Capture - Request for Additional Information Related to TVA Fleet Topical Report TVA-NPG-AWA16 - EPIC: L-2016-TOP-0011)
ML17191A2062017-07-0606 July 2017
NRR E-mail Capture - Sequoyah Nuclear Station, Unit 1 & 2 - Request for Additional Information Related to LAR for Technical Specification 3.8.1.17 Note Modification (CAC Nos. MF9398 and MF9399)
ML17150A0792017-05-23023 May 2017
NRR E-mail Capture - Request for Additional Information Related to TVA Fleet LAR for EAL Change to Adopt NEI-99-01 Rev.6 (CAC Nos. MF9054 - MF9060)
ML17112A0402017-04-20020 April 2017
NRR E-mail Capture - Sequoyah Nuclear Station, Unit 1 & 2 - Request for Additional Information Related to LAR for Technical Specification 3.8.1, AC SOURCES-OPERATING
ML17004A0612017-01-0404 January 2017
Notification of NRC Triennial Fire Protection Inspection (Team)(Report 05000327/2017007 and 05000328/2017007)
ML15194A3882015-07-13013 July 2015
Request for Additional Information Related to LAR to Revise Ice Condenser Ice Mas Tech Spec
ML15175A2912015-06-24024 June 2015
E-mail Re. Request for Additional Information RR RP-07
ML15159B1642015-06-22022 June 2015
Requests for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application-Set 25 (TAC Nos. MF0481 and MF0482)
ML15050A0962015-02-19019 February 2015
E-mail Re. Request for Additional Information Related to LAR to Ice Condendser Inc Mass Tech Spec
ML15042A4702015-02-11011 February 2015
E-mail Re. Request for Additional Information Related to License Amendment Request to Revise Technical Specification on Ultimate Heat Sink
ML14318A8052014-11-12012 November 2014
Requalification Program Inspection - Sequoyah Nuclear Plant
ML14254A2042014-09-22022 September 2014
Requests for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application - Set 22 (TAC Nos. MF0481 and MF0482)
ML14220A2132014-08-0808 August 2014
E-mail Re. Request for Additional Information Regarding Voluntary Risk Initiative National Fire Protection Association Standard 805
2023-02-27
[Table view] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 March 12, 2014 Mr. Joe Shea Nuclear Licensing Vice President Sequoyah Nuclear Plant Tennessee Valley Authority 1101 Market Street Chattanooga, TN 37 402
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION- SET 20 (TAC NOS. MF0481 AND MF0482)
Dear Mr. Shea,
By letter dated January 7, 2013, Tennessee Valley Authority submitted an application pursuant to Title 10 of the Code of Federal Regulations (CFR) Part 54, to renew the operating license DPR-77 and DPR-79 for Sequoyah Nuclear Plant, Units 1 and 2, for review by the US. Nuclear Regulatory Commission (NRC or the staff). The staff is reviewing the information contained in the license renewal application and has identified, in the enclosure, areas where additional information is needed to complete the review.
The request for additional information, outlined in the enclosure was discussed with Henry Lee, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me at 301-415-1427 or by e-mail at Richard.Ptasse@nrc.gov.
Sincerely, Richard A. Plasse, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-327 and 50-328
Enclosure:
Request for Additional Information cc w/encl: Listserv
' ML14064A473 *concurred via email OFFICE LA:RPB1 :DLR PM:RPB1 :DLR BC:RPB1 :DLR PM: RPB1:DLR NAME I Kino E Savoc Y Diaz-Sanabria R Plasse DATE 3/7/2014 3/11/2014 3/11/2014 3/1/2014 Letter to J. Carlin from R. Plasse dated March XX, 2014
SUBJECT:
REQUESTS FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION- SET 20 (TAC NOS. MF0481 AND MF0482)
DISTRIBUTION HARDCOPY:
DLR RF E-MAIL:
PUBLIC RidsNrrDir Resource RidsNrrDirRpb1 Resource RidsNrrDirRpb2 Resource RidsNrrDirRerb Resource RidsNrrDirRarb Resource RidsNrrDirRasb Resource beth.mizuno@nrc.gov brian. harris@nrc.gov john.pelchat@nrc.gov gena.woodruff@nrc.gov siva.lingam@nrc.gov wesley.deschaine@nrc.gov galen.smith@nrc.gov scott. shaeffer@nrc.gov jeffrey.hamman@nrc.gov craig.kontz@nrc.gov caudle.julian@nrc.gov generette.lloyd@epa.gov gmadkins@tva.gov clwilson@tva.gov hleeO@tva.gov dllundy@tva.gov
SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION REQUEST FOR ADDITIONAL INFORMATION RAI 8.1.13-4
Background:
The response to request for additional information (RAI) 3.0.3-1 Request 4b, dated January 16, 2014, states that nonintrusive techniques (e.g., volumetric testing) will be used in lieu of conducting flow testing or internal inspections to detect flow blockage, and an ultrasonic testing (UT) technique has been demonstrated on the essential raw cooling water (ERCW) system to detect flow blockage due to silt and clams.
Issue:
The staff lacks sufficient information to conclude that the UT technique can effectively detect flow blockage caused by corrosion product buildup.
Request:
For the requests below, ensure that the response addresses each sub-bullet.
- 1. Provide a detailed description of the UT procedure that will be used to detect obstructions.
- a. What UT techniques are used to identify flow blockage in the ERCW system (e.g., 0 degree, guided wave)?
- b. Is the procedure automated or manual?
- c. What are the limits on the thickness, diameter, product form (e.g., straight pipe, elbows, tees) for the procedure?
- 2. Describe the qualification requirements for personnel and procedures.
- a. What are the personnel qualification requirements?
- b. What are the requirements for requalification (how often, what method, etc.)?
- c. What are the procedure requirements?
- d. What procedure controls are in place to control essential variables for the procedure (e.g., equipment, frequency, bandwidth)?
- 3. Describe the practical demonstration performed on the ERCW system in detail.
- a. How many tests were conducted during the demonstration process?
- b. How many different sizes of pipe were tested?
- c. What adverse conditions were tested for in the demonstration (e.g. blockage, wall thinning, corrosion)?
- d. Were there any false negatives or false positives during demonstration testing?
Quantify, if applicable.
- 4. Describe the results of the field inspections conducted using this UT procedure.
- a. How much ERCW system piping has been examined (approximate number of feet) subsequent to the demonstration testing?
- b. How many tests in the subsequent field inspections have detected flow blockage?
- c. Have there been any false negatives or false positives during the field examination? Quantify, if applicable.
ENCLOSURE
