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| | number = ML16011A317 | | | number = ML16011A317 |
| | issue date = 01/11/2016 | | | issue date = 01/11/2016 |
| | title = Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67 (TAC Nos. MF6399 and MF6400) | | | title = NRR E-mail Capture - Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67 |
| | author name = Lingam S P | | | author name = Lingam S |
| | author affiliation = NRC/NRR/DORL/LPLIV-1 | | | author affiliation = NRC/NRR/DORL/LPLIV-1 |
| | addressee name = Schrader K J | | | addressee name = Schrader K |
| | addressee affiliation = PG&E Corp | | | addressee affiliation = PG&E Corp |
| | docket = 05000275, 05000323 | | | docket = 05000275, 05000323 |
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| =Text= | | =Text= |
| {{#Wiki_filter:1 NRR-PMDAPEm Resource From:Lingam, Siva Sent: Monday, January 11, 2016 9:22 AM To: Schrader, Kenneth (KJSe@pge.com) | | {{#Wiki_filter:NRR-PMDAPEm Resource From: Lingam, Siva Sent: Monday, January 11, 2016 9:22 AM To: Schrader, Kenneth (KJSe@pge.com) |
| Cc:Pascarelli, Robert; Dennig, Robert; Bettle, Jerome; Woodyatt, Diana; 'mjrm@pge.com'; | | Cc: Pascarelli, Robert; Dennig, Robert; Bettle, Jerome; Woodyatt, Diana; 'mjrm@pge.com'; |
| Thatipamala, Ramakrishna; misf@pge.com; Wright, Michael (ENG) | | Thatipamala, Ramakrishna; misf@pge.com; Wright, Michael (ENG) |
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| ==Subject:== | | ==Subject:== |
| Diablo Canyon 1 and 2 - Requests for Addi tional Information for License Amendment Request 15-03 to Adopt the Alternative So urce Term per 10 CFR 50.67 (TAC Nos. | | Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term per 10 CFR 50.67 (TAC Nos. |
| MF6399 and MF6400)By a letter dated June 17, 2015 2015 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15176A539), as supplemented by letters dated August 31, October 22, November 2, November 6, and December 17, 2015 (ADAMS Accession Nos. ML15243A363, ML15295A470, ML15321A235, ML15310A522, and ML16004A363, respectively | | MF6399 and MF6400) |
| ), Pacific Gas and Electric (PG&E, the licensee), submitted a license amendment request (LAR) to revise the licensing bases to adopt the alternative source term (AST) as allowed by Title 10 of the Code of Federal Regulations (10 CFR), Part 50, Section 50.67, "Accident source term," for Diablo Canyon Power Plant (DCPP), Units 1 and 2. Please note the following official requests for additional information (RAIs) from our Containment and Ventilation Branch (SCVB) for the AST LAR. Please provide your responses within 30 days from the date of this e-mail. We transmitted the draft RAIs to you on December 7, 2015, and we had a clarification call on January 7, 2016. Your timely responses will allow the U.S. Nuclear Regulatory Commission staff to complete its review on schedule. | | By a letter dated June 17, 2015 2015 (Agencywide Documents Access and Management System (ADAMS) |
| | Accession No. ML15176A539), as supplemented by letters dated August 31, October 22, November 2, November 6, and December 17, 2015 (ADAMS Accession Nos. ML15243A363, ML15295A470, ML15321A235, ML15310A522, and ML16004A363, respectively), Pacific Gas and Electric (PG&E, the licensee), submitted a license amendment request (LAR) to revise the licensing bases to adopt the alternative source term (AST) as allowed by Title 10 of the Code of Federal Regulations (10 CFR), Part 50, Section 50.67, Accident source term, for Diablo Canyon Power Plant (DCPP), Units 1 and 2. Please note the following official requests for additional information (RAIs) from our Containment and Ventilation Branch (SCVB) for the AST LAR. Please provide your responses within 30 days from the date of this e-mail. We transmitted the draft RAIs to you on December 7, 2015, and we had a clarification call on January 7, 2016. Your timely responses will allow the U.S. Nuclear Regulatory Commission staff to complete its review on schedule. |
| : 1. Assuming 100 cfm [cubic feet per minute] damper leakage, what impact does the installed back-draft dampers have on CR ventilation analyses assumptions or unfiltered in-leakage testing methods/results? | | : 1. Assuming 100 cfm [cubic feet per minute] damper leakage, what impact does the installed back-draft dampers have on CR ventilation analyses assumptions or unfiltered in-leakage testing methods/results? |
| : 2. Containment spray in recirculation mode following Loss-of-Coolant Accident for fission product cleanup - explain requiring operation within 12 minutes. Does this change impact any bounding containment analyses? | | : 2. Containment spray in recirculation mode following Loss-of-Coolant Accident for fission product cleanup |
| : 3. In Surveillance Requirement (SR) 3.6.3.1, the SR direction is to verify that the 48 inch containment purge valve is sealed closed with a frequency that is in accordance with the Surveillance Frequency Control Program. What is the initial frequency? Discuss how the frequency was determined and how the frequency may change over time. | | - explain requiring operation within 12 minutes. Does this change impact any bounding containment analyses? |
| | : 3. In Surveillance Requirement (SR) 3.6.3.1, the SR direction is to verify that the 48 inch containment purge valve is sealed closed with a frequency that is in accordance with the Surveillance Frequency Control Program. What is the initial frequency? Discuss how the frequency was determined and how the frequency may change over time. |
| : 4. In SR 3.6.3.7, explain the rational for the removal of the surveillance within 92 days after opening the containment purge supply and exhaust valves. | | : 4. In SR 3.6.3.7, explain the rational for the removal of the surveillance within 92 days after opening the containment purge supply and exhaust valves. |
| : 5. In the Bases, Containment Purge System (48 inch purge valves), the text was changed to delete the "no more than 200 hours per calendar year" flow path limit from the 48 inch purge valves. Is there a new limit? If a limit is no longer required, please justify. | | : 5. In the Bases, Containment Purge System (48 inch purge valves), the text was changed to delete the no more than 200 hours per calendar year flow path limit from the 48 inch purge valves. Is there a new limit? If a limit is no longer required, please justify. |
| Siva P. Lingam U.S. Nuclear Regulatory Commission Project Manager (NRR/DORL/LPL4-1) | | Siva P. Lingam U.S. Nuclear Regulatory Commission Project Manager (NRR/DORL/LPL4-1) |
| Diablo Canyon Nuclear Power Plant Location: O8-D5; Mail Stop: O8-B3 Telephone: 301-415-1564; Fax: 301-415-1222 2E-mail address: siva.lingam@nrc.gov | | Diablo Canyon Nuclear Power Plant Location: O8-D5; Mail Stop: O8-B3 Telephone: 301-415-1564; Fax: 301-415-1222 1 |
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| Hearing Identifier: NRR_PMDA Email Number: 2587 Mail Envelope Properties (20a5b60130aa4a5482e5c3ed8724c321) | | E-mail address: siva.lingam@nrc.gov 2 |
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| | Hearing Identifier: NRR_PMDA Email Number: 2587 Mail Envelope Properties (20a5b60130aa4a5482e5c3ed8724c321) |
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| ==Subject:== | | ==Subject:== |
| Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term per 10 CFR 50.67 (TAC Nos. MF6399 and MF6400) | | Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term per 10 CFR 50.67 (TAC Nos. MF6399 and MF6400) |
| Sent Date: 1/11/2016 9:22:09 AM Received Date: 1/11/2016 9:22:00 AM From: Lingam, Siva Created By: Siva.Lingam@nrc.gov | | Sent Date: 1/11/2016 9:22:09 AM Received Date: 1/11/2016 9:22:00 AM From: Lingam, Siva Created By: Siva.Lingam@nrc.gov Recipients: |
| | "Pascarelli, Robert" <Robert.Pascarelli@nrc.gov> |
| | Tracking Status: None "Dennig, Robert" <Robert.Dennig@nrc.gov> |
| | Tracking Status: None "Bettle, Jerome" <Jerome.Bettle@nrc.gov> |
| | Tracking Status: None "Woodyatt, Diana" <Diana.Woodyatt@nrc.gov> |
| | Tracking Status: None |
| | "'mjrm@pge.com'" <mjrm@pge.com> |
| | Tracking Status: None "Thatipamala, Ramakrishna" <RNTT@pge.com> |
| | Tracking Status: None "misf@pge.com" <misf@pge.com> |
| | Tracking Status: None "Wright, Michael (ENG)" <MDW4@pge.com> |
| | Tracking Status: None "Schrader, Kenneth (KJSe@pge.com)" <KJSe@pge.com> |
| | Tracking Status: None Post Office: HQPWMSMRS04.nrc.gov Files Size Date & Time MESSAGE 2623 1/11/2016 9:22:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: |
| | Recipients Received: |
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| Recipients: "Pascarelli, Robert" <Robert.Pascarelli@nrc.gov> Tracking Status: None "Dennig, Robert" <Robert.Dennig@nrc.gov> Tracking Status: None "Bettle, Jerome" <Jerome.Bettle@nrc.gov> Tracking Status: None "Woodyatt, Diana" <Diana.Woodyatt@nrc.gov>
| | NRR-PMDAPEm Resource From: Lingam, Siva Sent: Monday, January 11, 2016 9:22 AM To: Schrader, Kenneth (KJSe@pge.com) |
| Tracking Status: None "'mjrm@pge.com'" <mjrm@pge.com> Tracking Status: None "Thatipamala, Ramakrishna" <RNTT@pge.com> Tracking Status: None "misf@pge.com" <misf@pge.com>
| | Cc: Pascarelli, Robert; Dennig, Robert; Bettle, Jerome; Woodyatt, Diana; 'mjrm@pge.com'; |
| Tracking Status: None "Wright, Michael (ENG)" <MDW4@pge.com> Tracking Status: None "Schrader, Kenneth (KJSe@pge.com)" <KJSe@pge.com> Tracking Status: None
| |
| | |
| Post Office: HQPWMSMRS04.nrc.gov Files Size Date & Time MESSAGE 2623 1/11/2016 9:22:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:
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| 1 NRR-PMDAPEm Resource From:Lingam, Siva Sent: Monday, January 11, 2016 9:22 AM To: Schrader, Kenneth (KJSe@pge.com)
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| Cc:Pascarelli, Robert; Dennig, Robert; Bettle, Jerome; Woodyatt, Diana; 'mjrm@pge.com'; | |
| Thatipamala, Ramakrishna; misf@pge.com; Wright, Michael (ENG) | | Thatipamala, Ramakrishna; misf@pge.com; Wright, Michael (ENG) |
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| ==Subject:== | | ==Subject:== |
| Diablo Canyon 1 and 2 - Requests for Addi tional Information for License Amendment Request 15-03 to Adopt the Alternative So urce Term per 10 CFR 50.67 (TAC Nos. | | Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term per 10 CFR 50.67 (TAC Nos. |
| MF6399 and MF6400)By a letter dated June 17, 2015 2015 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15176A539), as supplemented by letters dated August 31, October 22, November 2, November 6, and December 17, 2015 (ADAMS Accession Nos. ML15243A363, ML15295A470, ML15321A235, ML15310A522, and ML16004A363, respectively | | MF6399 and MF6400) |
| ), Pacific Gas and Electric (PG&E, the licensee), submitted a license amendment request (LAR) to revise the licensing bases to adopt the alternative source term (AST) as allowed by Title 10 of the Code of Federal Regulations (10 CFR), Part 50, Section 50.67, "Accident source term," for Diablo Canyon Power Plant (DCPP), Units 1 and 2. Please note the following official requests for additional information (RAIs) from our Containment and Ventilation Branch (SCVB) for the AST LAR. Please provide your responses within 30 days from the date of this e-mail. We transmitted the draft RAIs to you on December 7, 2015, and we had a clarification call on January 7, 2016. Your timely responses will allow the U.S. Nuclear Regulatory Commission staff to complete its review on schedule. | | By a letter dated June 17, 2015 2015 (Agencywide Documents Access and Management System (ADAMS) |
| | Accession No. ML15176A539), as supplemented by letters dated August 31, October 22, November 2, November 6, and December 17, 2015 (ADAMS Accession Nos. ML15243A363, ML15295A470, ML15321A235, ML15310A522, and ML16004A363, respectively), Pacific Gas and Electric (PG&E, the licensee), submitted a license amendment request (LAR) to revise the licensing bases to adopt the alternative source term (AST) as allowed by Title 10 of the Code of Federal Regulations (10 CFR), Part 50, Section 50.67, Accident source term, for Diablo Canyon Power Plant (DCPP), Units 1 and 2. Please note the following official requests for additional information (RAIs) from our Containment and Ventilation Branch (SCVB) for the AST LAR. Please provide your responses within 30 days from the date of this e-mail. We transmitted the draft RAIs to you on December 7, 2015, and we had a clarification call on January 7, 2016. Your timely responses will allow the U.S. Nuclear Regulatory Commission staff to complete its review on schedule. |
| : 1. Assuming 100 cfm [cubic feet per minute] damper leakage, what impact does the installed back-draft dampers have on CR ventilation analyses assumptions or unfiltered in-leakage testing methods/results? | | : 1. Assuming 100 cfm [cubic feet per minute] damper leakage, what impact does the installed back-draft dampers have on CR ventilation analyses assumptions or unfiltered in-leakage testing methods/results? |
| : 2. Containment spray in recirculation mode following Loss-of-Coolant Accident for fission product cleanup - explain requiring operation within 12 minutes. Does this change impact any bounding containment analyses? | | : 2. Containment spray in recirculation mode following Loss-of-Coolant Accident for fission product cleanup |
| : 3. In Surveillance Requirement (SR) 3.6.3.1, the SR direction is to verify that the 48 inch containment purge valve is sealed closed with a frequency that is in accordance with the Surveillance Frequency Control Program. What is the initial frequency? Discuss how the frequency was determined and how the frequency may change over time. | | - explain requiring operation within 12 minutes. Does this change impact any bounding containment analyses? |
| | : 3. In Surveillance Requirement (SR) 3.6.3.1, the SR direction is to verify that the 48 inch containment purge valve is sealed closed with a frequency that is in accordance with the Surveillance Frequency Control Program. What is the initial frequency? Discuss how the frequency was determined and how the frequency may change over time. |
| : 4. In SR 3.6.3.7, explain the rational for the removal of the surveillance within 92 days after opening the containment purge supply and exhaust valves. | | : 4. In SR 3.6.3.7, explain the rational for the removal of the surveillance within 92 days after opening the containment purge supply and exhaust valves. |
| : 5. In the Bases, Containment Purge System (48 inch purge valves), the text was changed to delete the "no more than 200 hours per calendar year" flow path limit from the 48 inch purge valves. Is there a new limit? If a limit is no longer required, please justify. | | : 5. In the Bases, Containment Purge System (48 inch purge valves), the text was changed to delete the no more than 200 hours per calendar year flow path limit from the 48 inch purge valves. Is there a new limit? If a limit is no longer required, please justify. |
| Siva P. Lingam U.S. Nuclear Regulatory Commission Project Manager (NRR/DORL/LPL4-1) | | Siva P. Lingam U.S. Nuclear Regulatory Commission Project Manager (NRR/DORL/LPL4-1) |
| Diablo Canyon Nuclear Power Plant Location: O8-D5; Mail Stop: O8-B3 Telephone: 301-415-1564; Fax: 301-415-1222 2E-mail address: siva.lingam@nrc.gov | | Diablo Canyon Nuclear Power Plant Location: O8-D5; Mail Stop: O8-B3 Telephone: 301-415-1564; Fax: 301-415-1222 1 |
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| Hearing Identifier: NRR_PMDA Email Number: 2587 Mail Envelope Properties (20a5b60130aa4a5482e5c3ed8724c321) | | E-mail address: siva.lingam@nrc.gov 2 |
| | |
| | Hearing Identifier: NRR_PMDA Email Number: 2587 Mail Envelope Properties (20a5b60130aa4a5482e5c3ed8724c321) |
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| ==Subject:== | | ==Subject:== |
| Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term per 10 CFR 50.67 (TAC Nos. MF6399 and MF6400) | | Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term per 10 CFR 50.67 (TAC Nos. MF6399 and MF6400) |
| Sent Date: 1/11/2016 9:22:09 AM Received Date: 1/11/2016 9:22:00 AM From: Lingam, Siva Created By: Siva.Lingam@nrc.gov | | Sent Date: 1/11/2016 9:22:09 AM Received Date: 1/11/2016 9:22:00 AM From: Lingam, Siva Created By: Siva.Lingam@nrc.gov Recipients: |
| | | "Pascarelli, Robert" <Robert.Pascarelli@nrc.gov> |
| Recipients: "Pascarelli, Robert" <Robert.Pascarelli@nrc.gov> Tracking Status: None "Dennig, Robert" <Robert.Dennig@nrc.gov> Tracking Status: None "Bettle, Jerome" <Jerome.Bettle@nrc.gov> Tracking Status: None "Woodyatt, Diana" <Diana.Woodyatt@nrc.gov> | | Tracking Status: None "Dennig, Robert" <Robert.Dennig@nrc.gov> |
| Tracking Status: None "'mjrm@pge.com'" <mjrm@pge.com> Tracking Status: None "Thatipamala, Ramakrishna" <RNTT@pge.com> Tracking Status: None "misf@pge.com" <misf@pge.com> | | Tracking Status: None "Bettle, Jerome" <Jerome.Bettle@nrc.gov> |
| Tracking Status: None "Wright, Michael (ENG)" <MDW4@pge.com> Tracking Status: None "Schrader, Kenneth (KJSe@pge.com)" <KJSe@pge.com> Tracking Status: None | | Tracking Status: None "Woodyatt, Diana" <Diana.Woodyatt@nrc.gov> |
| | | Tracking Status: None |
| Post Office: HQPWMSMRS04.nrc.gov Files Size Date & Time MESSAGE 2623 1/11/2016 9:22:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:}} | | "'mjrm@pge.com'" <mjrm@pge.com> |
| | Tracking Status: None "Thatipamala, Ramakrishna" <RNTT@pge.com> |
| | Tracking Status: None "misf@pge.com" <misf@pge.com> |
| | Tracking Status: None "Wright, Michael (ENG)" <MDW4@pge.com> |
| | Tracking Status: None "Schrader, Kenneth (KJSe@pge.com)" <KJSe@pge.com> |
| | Tracking Status: None Post Office: HQPWMSMRS04.nrc.gov Files Size Date & Time MESSAGE 2623 1/11/2016 9:22:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: |
| | Recipients Received:}} |
Letter Sequence RAI |
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MONTHYEARML15191A4942015-07-10010 July 2015
NRR E-mail Capture - NRC Staff'S Acceptance Review Determination, Entergy Fleet Relief Request EN-15-1 Proposed Alternative to Use ASME Code Case N-789-1 (TAC Nos. MF6340-MF6349)
Project stage: Acceptance Review
ML15219A0162015-08-13013 August 2015
Supplemental Information Needed for Acceptance of Requested Licensing Action, License Amendment Request to Revise Licensing Basis to Adopt the Alternative Source Term
Project stage: Acceptance Review
DCL-15-105, Supplement to License Amendment Request 15-03, Application of Alternative Source Term.2015-08-31031 August 2015
Supplement to License Amendment Request 15-03, Application of Alternative Source Term.
Project stage: Supplement
ML15252A0062015-09-0808 September 2015
NRR E-mail Capture - Diablo Canyon, Units 1 and 2 - Acceptance Review of LAR 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67
Project stage: Acceptance Review
ML15265A6002015-09-22022 September 2015
NRR E-mail Capture - Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67
Project stage: RAI
ML15266A5322015-09-23023 September 2015
NRR E-mail Capture - Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67
Project stage: RAI
ML15278A0492015-10-0101 October 2015
NRR E-mail Capture - Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67
Project stage: RAI
ML15280A4432015-10-0707 October 2015
NRR E-mail Capture - Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67
Project stage: RAI
ML15293A6022015-10-20020 October 2015
NRR E-mail Capture - Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67
Project stage: RAI
ML15336A1022015-12-0202 December 2015
NRR E-mail Capture - Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67
Project stage: RAI
ML16004A3542015-12-11011 December 2015
Response to NRC Request for Additional Information Regarding License Amendment Request 15-03, Application of Alternative Source Terms Summary of Dose Analysis & Results, Revision 1
Project stage: Response to RAI
ML16004A3562015-12-17017 December 2015
Response to NRC Request for Additional Information Regarding License Amendment Request 15-03, Application of Alternative Source Term.
Project stage: Response to RAI
ML16004A3552015-12-17017 December 2015
Response to NRC Request for Additional Information Regarding License Amendment Request 15-03, Regulatory Guide 1.183 Conformance Tables, Revision 1
Project stage: Response to RAI
ML16004A3572015-12-17017 December 2015
Response to NRC Request for Additional Information Regarding License Amendment Request 15-03 - Updated Final Safety Analysis Report Markup, Revision 1. Part 2 of 3
Project stage: Response to RAI
DCL-15-152, Response to NRC Request for Additional Information Regarding License Amendment Request 15-03 - Updated Final Safety Analysis Report Markup, Revision 1. Part 3 of 32015-12-17017 December 2015
Response to NRC Request for Additional Information Regarding License Amendment Request 15-03 - Updated Final Safety Analysis Report Markup, Revision 1. Part 3 of 3
Project stage: Response to RAI
ML16004A3612015-12-17017 December 2015
Response to NRC Request for Additional Information Regarding License Amendment Request 15-03 - Updated Final Safety Analysis Report Markup, Revision 1. Part 1 of 3
Project stage: Response to RAI
ML16011A3172016-01-11011 January 2016
NRR E-mail Capture - Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67
Project stage: RAI
DCL-16-019, Response to NRC Request for Additional Information Regarding License Amendment Request 15-03, Application of Alternative Source Term.2016-02-10010 February 2016
Response to NRC Request for Additional Information Regarding License Amendment Request 15-03, Application of Alternative Source Term.
Project stage: Response to RAI
ML16048A2322016-02-17017 February 2016
NRR E-mail Capture - Diablo Canyon 1 and 2 - Met Data Second Round of Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67 (TAC Nos. MF6399 and MF640
Project stage: RAI
ML16071A4412016-03-0707 March 2016
Entergy Fleet Relief Request No. RR-EN-15-1-Proposed Alternative to Use ASME Code Case N-789-1 - E-mail from G.Davant to R.Guzman - Response to Second RAI (MF6340 - MF6349)
Project stage: Request
DCL-16-044, Response to NRC Request for Additional Information Regarding License Amendment Request 15-03, Application of Alternative Source Term.2016-04-21021 April 2016
Response to NRC Request for Additional Information Regarding License Amendment Request 15-03, Application of Alternative Source Term.
Project stage: Response to RAI
2015-08-31
[Table View] |
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Category:E-Mail
MONTHYEARML23334A0912023-11-30030 November 2023
NRR E-mail Capture - Diablo Canyon 1 and 2 - Audit Questions for License Amendment Associated with TSTF-505, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b
ML23335A1012023-11-0606 November 2023
OEDO-23-00350-NRR - Screen-in Email - 10 CFR 2.206 Petition from Mother'S for Peace and Change.Org Regarding Diablo Canyon
ML23306A0422023-11-0202 November 2023
NRR E-mail Capture - Acceptance Review Diablo Canyon Request to Adopt 10 CFR 50.69, risk-informed Categorization and Treatment of SSCs
ML23230A0702023-08-18018 August 2023
NRR E-mail Capture - Acceptance Review - Diablo Canyon Request to Revise Technical Specifications to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times RITSTF Initiative 4b
ML23165A2702023-06-14014 June 2023
NRR E-mail Capture - Acceptance Review - Diablo Canyon Revision to the Unit 1 Reactor Vessel Material Surveillance Program Withdrawal Schedule
ML23157A2392023-06-0505 June 2023
Limited Appearance Statement from Nina Babiarz in the Matter of the Diablo Canyon ISFSI License Renewal Application
ML23096A1792023-04-0606 April 2023
NRR E-mail Capture - Request for Additional Information Diablo Canyon Exemption Request Regarding Senior Reactor Operator License Application
ML23094A1032023-04-0404 April 2023
NRR E-mail Capture - Acceptance Review - Diablo Canyon Exemption Request Regarding Senior Reactor Operator License Application
ML23076A0932023-03-16016 March 2023
16-2023 Email - Estimate of Spent Nuclear Fuel in Tons
ML23067A0202023-03-0808 March 2023
NRR E-mail Capture - Diablo Canyon Nuclear Power Plant Evacuation Time Estimate Analysis Review
ML23046A1132023-02-13013 February 2023
Transmittal Email, Paul Bessette to Gibson, 2/13/23, Filing of Formal Opposition to PG&E Exemption Request
ML23046A1042023-02-13013 February 2023
Transmittal Email, Diane Curran to Gibson, 2/13/23, Filing of Formal Opposition to PG&E Exemption Request
ML23052A2042023-01-10010 January 2023
E-mail from Paul Bessette Dated 01/10/2023 Regarding Diablo Canyon
ML22326A1632022-11-21021 November 2022
Licensee Comment Email on Post-Shutdown Emergency Plan Amendment
ML22266A0012022-09-22022 September 2022
(External Sender) E-Mail Diablo Canyon Power Plant, Unit Nos. 1 and 2 - Total Amount of Spent Nuclear Fuel Stored in Tons
ML22241A1142022-08-29029 August 2022
NRR E-mail Capture - Acceptance Review - Diablo Canyon Application to Revise Technical Specifications to Adopt TSTF-569, Revision of Response Time Testing Definitions
ML22194A8872022-07-11011 July 2022
September 2022 Emergency Preparedness Exercise Inspection - Request for Information Email
ML22187A2652022-07-0606 July 2022
NRR E-mail Capture - Request for Additional Information: Diablo Canyon Exemption Request for Part 73 force-on-force Training Due to COVID-19
ML22105A0702022-04-15015 April 2022
NRR E-mail Capture - Acceptance Review - Diablo Canyon Request to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspections
ML22090A0832022-03-31031 March 2022
NRR E-mail Capture - Acceptance Review - Diablo Canyon Request for Approval of a Certified Fuel Handler Training and Retraining Program
ML22089A1672022-03-29029 March 2022
Email - Acknowledgement of NRC Receipt of Diablo Canyon ISFSI Renewal Application
ML22087A0412022-03-25025 March 2022
NRR E-mail Capture - Acceptance Review - Diablo Canyon Request for Approval of Alternative Security Measures for Early Warning System
ML22061A2192022-03-0202 March 2022
NRR E-mail Capture - Request for Additional Information - Diablo Canyon Proposed Changes to Emergency Plan for post-shutdown and Permanently Defueled Condition
ML21323A0652021-11-19019 November 2021
NRR E-mail Capture - Acceptance Review - Diablo Canyon Revision of Emergency Plan for post-shutdown Condition
ML21264A6722021-09-21021 September 2021
NRR E-mail Capture - Revised Schedule: Diablo Canyon Request to Revise Technical Specification to Reflect the Permanent Cessation of Reactor Operation
ML21215A3432021-08-0303 August 2021
NRR E-mail Capture - Request for Additional Information - Diablo Canyon Request to Revise Technical Specification 3.8.1, AC Sources - Operating to Support Diesel Fuel Oil Transfer System Component Planned Maintenance
ML21189A0462021-07-0707 July 2021
NRR E-mail Capture - Draft Request for Additional Information - Diablo Canyon Emergency Amendment Request to Revise Technical Specification 3.7.8, Auxiliary Saltwater (Asw) System
ML21188A0382021-07-0707 July 2021
(External_Sender) DCPP Draft Emergency LAR - Asw
DCL-21-046, Email for Emergency LAR for TS 3.7.8, Auxiliary Saltwater (Asw) System2021-07-0707 July 2021
Email for Emergency LAR for TS 3.7.8, Auxiliary Saltwater (Asw) System
ML21189A0662021-07-0707 July 2021
NRR E-mail Capture - Additional Draft Request for Additional Information - Diablo Canyon Emergency Amendment Request to Revise Technical Specification 3.7.8, Auxiliary Saltwater (Asw) System
ML21189A0442021-07-0707 July 2021
NRR E-mail Capture - Request for Additional Information - Diablo Canyon Emergency Amendment Request to Revise Technical Specification 3.7.8, Auxiliary Saltwater (Asw) System
ML21124A0612021-05-0404 May 2021
NRR E-mail Capture - Acceptance Review - Diablo Canyon Request to Revise Technical Specification 3.8.1, AC Sources - Operating to Support Diesel Fuel Oil Transfer System Component Planned Maintenance
ML21104A3642021-04-14014 April 2021
NRR E-mail Capture - Request for Additional Information - Diablo Canyon Proposed Technical Specifications and Revised License Conditions for the Permanently Defueled Condition
ML21062A0642021-03-0202 March 2021
NRR E-mail Capture - Request for Additional Information for Diablo Canyon Generic Letter 2004-02 Submittal (L-2017-LRC-0000)
ML21054A3112021-02-23023 February 2021
NRR E-mail Capture - Acceptance Review: Diablo Canyon Request for One-Time Exemption from Select 10 CFR 55.59 Requirements
ML21012A4432021-01-12012 January 2021
NRR E-mail Capture - Acceptance Review - Diablo Canyon Request to Revise Technical Specification to Reflect the Permanent Cessation of Reactor Operation
ML20328A3002020-11-23023 November 2020
Email from Cgnp to the NRC - Comment Diablo Canyon Nuclear Power Plant, Units 1 and 2 - Dcdep Public Meeting - November 24, 2020
ML20329A0692020-11-23023 November 2020
NRR E-mail Capture - Request for Additional Information: Diablo Canyon COVID-19 Exemption Request to Extend force-on-force Exercise
ML20323A4532020-11-18018 November 2020
NRR E-mail Capture - Request for Additional Information: Diablo Canyon COVID-19 Exemption Request to Extend Firearms Requalification
ML20261H4232020-09-17017 September 2020
NRR E-mail Capture - Request for Additional Information: Diablo Canyon Unit 2 Fall 2019 Steam Generator Tube Inspection Report
ML20239A9492020-08-26026 August 2020
(External Sender) E-Mail Comment by D. Lochbaum Regarding Diablo Canyon Unit 1 AFW System Piping
ML20239A7282020-08-24024 August 2020
(External-Sender) E-mail Comments on No Significant Hazards Determination for Diablo Canyon LAR
ML20239A7752020-08-24024 August 2020
(External-Sender) E-mail Comments on No Significant Hazards Determination for Diablo Canyon LAR
ML20240A2302020-08-23023 August 2020
(External-Sender) E-mail Public Comment by D. Lochbaum Regarding Diablo Canyon Safety Issue
ML20234A2422020-08-20020 August 2020
NRR E-mail Capture - Diablo Canyon Additional Request for Additional Information: Exigent License Amendment Request for Application to Provide a New Technical Specification 3.7.5, Auxiliary Feedwater System, Condition G EPID: L-2020-LLA-017
ML20233A8592020-08-19019 August 2020
Mothers for Peace Public Comment on Exigent LAR to Modify TS 3.7.5, Auxiliary Feedwater System
ML20233A3222020-08-18018 August 2020
Comment (4) e-mail from D. Lochbaum Regarding Diablo Canyon Exigent LAR
ML20231A2372020-08-17017 August 2020
NRR E-mail Capture - Diablo Canyon Additional Request for Additional Information: Exigent License Amendment Request for Application to Provide a New Technical Specification 3.7.5, Auxiliary Feedwater System, Condition G EPID: L-2020-LLA-017
ML20232C6482020-08-17017 August 2020
Lochbaum Public Comment 1 on Exigent LAR to Modify TS 3.7.5, Auxiliary Feedwater System
ML20230A0732020-08-14014 August 2020
NRR E-mail Capture - Diablo Canyon Request for Additional Information: Exigent License Amendment Request for Application to Provide a New Technical Specification 3.7.5, Auxiliary Feedwater System, Condition G
2023-08-18
[Table view]
Category:Request for Additional Information (RAI)
MONTHYEARML24024A2072024-01-24024 January 2024
Inservice Inspection Request for Information
IR 05000275/20240152023-10-10010 October 2023
Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection (050002752024015 and 050003232024015)
ML23249A2782023-09-0606 September 2023
Inservice Inspection Request for Information
ML23159A2382023-07-25025 July 2023
Request for Additional Information for the Technical Review of the Application for Renewal of the Diablo Canyon Independent Spent Fuel Storage Installation (Cac/Epid Nos. 001028/L-2022-RNW-0007)
ML23159A2372023-07-25025 July 2023
ISFSI Renewal RAI Transmittal Letter Enclosure
ML23096A1792023-04-0606 April 2023
NRR E-mail Capture - Request for Additional Information Diablo Canyon Exemption Request Regarding Senior Reactor Operator License Application
ML23047A0062023-02-21021 February 2023
Request for Additional Information Alternative Security Measures for Early Warning System (EPID: L-2022-LLA-0029) (Public Version)
ML23041A1862023-02-17017 February 2023
Request for Information Regarding Diablo Canyon Power Plant, Units 1 and 2 - December 8, 2022, Public Meeting
ML22258A1112022-09-14014 September 2022
2022 Diablo Canyon PIR Request for Information
ML22200A2572022-07-19019 July 2022
Notification of In-service Inspection (Inspection Report 05000323/2022004) and Request for Information
ML22187A2652022-07-0606 July 2022
NRR E-mail Capture - Request for Additional Information: Diablo Canyon Exemption Request for Part 73 force-on-force Training Due to COVID-19
ML22152A1502022-06-21021 June 2022
Request for Additional Information Regarding License Amendment Request for Technical Specifications and Revised License Conditions for the Permanently Defueled Condition
ML22122A1412022-05-0505 May 2022
.02 Doc Request
ML22068A2312022-03-17017 March 2022
Notification of NRC Design Bases Assurance Inspection (Team) 05000275/2022011 and 05000323/2022011 and Initial Request for Information
ML22061A2192022-03-0202 March 2022
NRR E-mail Capture - Request for Additional Information - Diablo Canyon Proposed Changes to Emergency Plan for post-shutdown and Permanently Defueled Condition
ML21363A1692021-12-29029 December 2021
Inservice Inspection Request for Information
ML22019A0412021-12-29029 December 2021
RFI
ML21215A3432021-08-0303 August 2021
NRR E-mail Capture - Request for Additional Information - Diablo Canyon Request to Revise Technical Specification 3.8.1, AC Sources - Operating to Support Diesel Fuel Oil Transfer System Component Planned Maintenance
ML21130A3642021-06-21021 June 2021
DC 2021401 Information Request
ML21104A3642021-04-14014 April 2021
NRR E-mail Capture - Request for Additional Information - Diablo Canyon Proposed Technical Specifications and Revised License Conditions for the Permanently Defueled Condition
ML21062A0642021-03-0202 March 2021
NRR E-mail Capture - Request for Additional Information for Diablo Canyon Generic Letter 2004-02 Submittal (L-2017-LRC-0000)
ML20329A0692020-11-23023 November 2020
NRR E-mail Capture - Request for Additional Information: Diablo Canyon COVID-19 Exemption Request to Extend force-on-force Exercise
ML20323A4532020-11-18018 November 2020
NRR E-mail Capture - Request for Additional Information: Diablo Canyon COVID-19 Exemption Request to Extend Firearms Requalification
ML20301A2212020-10-27027 October 2020
Notification of an NRC Fire Protection Baseline Inspection (NRC Inspection Report 05000275/2021010 and 05000323/2021010) and Request for Information
ML20261H4232020-09-17017 September 2020
NRR E-mail Capture - Request for Additional Information: Diablo Canyon Unit 2 Fall 2019 Steam Generator Tube Inspection Report
ML20231A2372020-08-17017 August 2020
NRR E-mail Capture - Diablo Canyon Additional Request for Additional Information: Exigent License Amendment Request for Application to Provide a New Technical Specification 3.7.5, Auxiliary Feedwater System, Condition G EPID: L-2020-LLA-017
ML20230A0732020-08-14014 August 2020
NRR E-mail Capture - Diablo Canyon Request for Additional Information: Exigent License Amendment Request for Application to Provide a New Technical Specification 3.7.5, Auxiliary Feedwater System, Condition G
ML20280A5432020-06-0303 June 2020
DC 2020 PIR Request for Information
ML20041E6012020-02-10010 February 2020
NRR E-mail Capture - Diablo Canyon Nuclear Power Plant, Units 1 and 2 - Request for Additional Information for Post -Shutdown Decommissioning Activities Report (PSDAR)
ML19262G7482019-08-0909 August 2019
Request for Information
ML19149A6012019-05-28028 May 2019
NRR E-mail Capture - Request for Additional Information (Supplemental) - License Amendment Request (LAR) to Revise Emergency Plan Response Organization Staffing and Augmentation
ML19123A2162019-05-0202 May 2019
NRR E-mail Capture - Diablo Canyon Nuclear Power Plant -Request for Exemption from Operator Written Examination and Operating Test - Request for Additional Information
ML19084A2572019-03-21021 March 2019
NRR E-mail Capture - Request for Additional Information - License Amendment Request (LAR) to Revise Emergency Plan Response Organization Staffing and Augmentation
ML19043A9452019-02-20020 February 2019
Notification of Inspection (NRC Inspection Report 05000275/2019002, 05000323/2019002 and Request for Information
ML17306A9382017-11-0202 November 2017
NRR E-mail Capture - Request for Additional Information - Request for Approval for Application of Full Weld Overlay REP-RHR-SWOL, Diablo Canyon Power Plant, Units 1 and 2
ML17152A3192017-06-0101 June 2017
NRR E-mail Capture - Request for Additional Information (RAI)- Relief Requests NDE-SLH U2, NDE-LSL U2, NDE-LHC U2, NDE-LHM U2, and NDE-ONV U2 (CAC Nos. MF9386 Through MF9390)
ML17102B6072017-04-12012 April 2017
NRR E-mail Capture - Request for Additional Information (RAI) - Revised Emergency Action Level Schemes Pursuant to Nuclear Energy Institute (NEI) 99-01, Revision 6
ML16347A0032016-12-0909 December 2016
NRR E-mail Capture - Request for Additional Information (RAI) - Diablo Canyon Power Plant License Amendment Request for Adoption of NEI 94-01
ML16326A3562016-11-21021 November 2016
NRR E-mail Capture - Request for Additional Information - License Amendment Request to Adopt Nuclear Energy Institute (NEI) 94-01, Revision 2-A for Diablo Canyon Power Plant, Units 1 and 2 - CAC Nos. MF7731 and MF7732
ML16048A2322016-02-17017 February 2016
NRR E-mail Capture - Diablo Canyon 1 and 2 - Met Data Second Round of Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67 (TAC Nos. MF6399 and MF640
ML16011A3652016-02-0202 February 2016
Requests for Additional Information for the Review of the Diablo Canyon Power Plant, Units 1 and 2, License Renewal Application - Set 39 (TAC Nos. ME2896 and ME2897)
ML16011A3172016-01-11011 January 2016
NRR E-mail Capture - Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term Per 10 CFR 50.67
ML15358A0022015-12-23023 December 2015
Request for Additional Information Email (Follow-up Pra), Request to Adopt National Fire Protection Association NFPA 805, Performance-Based Standard for Fire Protection for LWR Generating Plants (2001 Edition)
ML15357A3822015-12-23023 December 2015
Request for Additional Information, Round 4 - Amendment Request to Replace Digital Process Protection System for Reactor Protection System and Engineered Safety Features Actuation System Functions
ML15295A3732015-11-0505 November 2015
Requests for Additional Information Related to the Diablo Canyon LRA Environmental Review
ML15287A1652015-10-23023 October 2015
Requests for Additional Information Related to the Diablo Canyon LRA Environmental Review - SAMA
ML15267A7742015-10-0101 October 2015
Request for Additional Information Associated with Near-Term Task Force Recommendation 2.1 Seismic Evaluations
ML15217A4812015-09-24024 September 2015
Requests for Additional Information for the Review of the Diablo Canyon Power Plant, Units 1 and 2, License Renewal Application Set-38 TAC Nos. ME2896 and ME2897
ML15238B7742015-08-27027 August 2015
Request for Additional Information Associated with Near-Term Task Force Recommendation 2.1, Seismic Reevaluations
ML15153A0332015-06-29029 June 2015
Request for Additional Information Associated with Near-Term Task Force Recommendation 2.1, Seismic Reevaluations
2024-01-24
[Table view] |
Text
NRR-PMDAPEm Resource From: Lingam, Siva Sent: Monday, January 11, 2016 9:22 AM To: Schrader, Kenneth (KJSe@pge.com)
Cc: Pascarelli, Robert; Dennig, Robert; Bettle, Jerome; Woodyatt, Diana; 'mjrm@pge.com';
Thatipamala, Ramakrishna; misf@pge.com; Wright, Michael (ENG)
Subject:
Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term per 10 CFR 50.67 (TAC Nos.
MF6399 and MF6400)
By a letter dated June 17, 2015 2015 (Agencywide Documents Access and Management System (ADAMS)
Accession No. ML15176A539), as supplemented by letters dated August 31, October 22, November 2, November 6, and December 17, 2015 (ADAMS Accession Nos. ML15243A363, ML15295A470, ML15321A235, ML15310A522, and ML16004A363, respectively), Pacific Gas and Electric (PG&E, the licensee), submitted a license amendment request (LAR) to revise the licensing bases to adopt the alternative source term (AST) as allowed by Title 10 of the Code of Federal Regulations (10 CFR), Part 50, Section 50.67, Accident source term, for Diablo Canyon Power Plant (DCPP), Units 1 and 2. Please note the following official requests for additional information (RAIs) from our Containment and Ventilation Branch (SCVB) for the AST LAR. Please provide your responses within 30 days from the date of this e-mail. We transmitted the draft RAIs to you on December 7, 2015, and we had a clarification call on January 7, 2016. Your timely responses will allow the U.S. Nuclear Regulatory Commission staff to complete its review on schedule.
- 1. Assuming 100 cfm [cubic feet per minute] damper leakage, what impact does the installed back-draft dampers have on CR ventilation analyses assumptions or unfiltered in-leakage testing methods/results?
- 2. Containment spray in recirculation mode following Loss-of-Coolant Accident for fission product cleanup
- explain requiring operation within 12 minutes. Does this change impact any bounding containment analyses?
- 3. In Surveillance Requirement (SR) 3.6.3.1, the SR direction is to verify that the 48 inch containment purge valve is sealed closed with a frequency that is in accordance with the Surveillance Frequency Control Program. What is the initial frequency? Discuss how the frequency was determined and how the frequency may change over time.
- 4. In SR 3.6.3.7, explain the rational for the removal of the surveillance within 92 days after opening the containment purge supply and exhaust valves.
- 5. In the Bases, Containment Purge System (48 inch purge valves), the text was changed to delete the no more than 200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> per calendar year flow path limit from the 48 inch purge valves. Is there a new limit? If a limit is no longer required, please justify.
Siva P. Lingam U.S. Nuclear Regulatory Commission Project Manager (NRR/DORL/LPL4-1)
Diablo Canyon Nuclear Power Plant Location: O8-D5; Mail Stop: O8-B3 Telephone: 301-415-1564; Fax: 301-415-1222 1
E-mail address: siva.lingam@nrc.gov 2
Hearing Identifier: NRR_PMDA Email Number: 2587 Mail Envelope Properties (20a5b60130aa4a5482e5c3ed8724c321)
Subject:
Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term per 10 CFR 50.67 (TAC Nos. MF6399 and MF6400)
Sent Date: 1/11/2016 9:22:09 AM Received Date: 1/11/2016 9:22:00 AM From: Lingam, Siva Created By: Siva.Lingam@nrc.gov Recipients:
"Pascarelli, Robert" <Robert.Pascarelli@nrc.gov>
Tracking Status: None "Dennig, Robert" <Robert.Dennig@nrc.gov>
Tracking Status: None "Bettle, Jerome" <Jerome.Bettle@nrc.gov>
Tracking Status: None "Woodyatt, Diana" <Diana.Woodyatt@nrc.gov>
Tracking Status: None
"'mjrm@pge.com'" <mjrm@pge.com>
Tracking Status: None "Thatipamala, Ramakrishna" <RNTT@pge.com>
Tracking Status: None "misf@pge.com" <misf@pge.com>
Tracking Status: None "Wright, Michael (ENG)" <MDW4@pge.com>
Tracking Status: None "Schrader, Kenneth (KJSe@pge.com)" <KJSe@pge.com>
Tracking Status: None Post Office: HQPWMSMRS04.nrc.gov Files Size Date & Time MESSAGE 2623 1/11/2016 9:22:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
Recipients Received:
NRR-PMDAPEm Resource From: Lingam, Siva Sent: Monday, January 11, 2016 9:22 AM To: Schrader, Kenneth (KJSe@pge.com)
Cc: Pascarelli, Robert; Dennig, Robert; Bettle, Jerome; Woodyatt, Diana; 'mjrm@pge.com';
Thatipamala, Ramakrishna; misf@pge.com; Wright, Michael (ENG)
Subject:
Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term per 10 CFR 50.67 (TAC Nos.
MF6399 and MF6400)
By a letter dated June 17, 2015 2015 (Agencywide Documents Access and Management System (ADAMS)
Accession No. ML15176A539), as supplemented by letters dated August 31, October 22, November 2, November 6, and December 17, 2015 (ADAMS Accession Nos. ML15243A363, ML15295A470, ML15321A235, ML15310A522, and ML16004A363, respectively), Pacific Gas and Electric (PG&E, the licensee), submitted a license amendment request (LAR) to revise the licensing bases to adopt the alternative source term (AST) as allowed by Title 10 of the Code of Federal Regulations (10 CFR), Part 50, Section 50.67, Accident source term, for Diablo Canyon Power Plant (DCPP), Units 1 and 2. Please note the following official requests for additional information (RAIs) from our Containment and Ventilation Branch (SCVB) for the AST LAR. Please provide your responses within 30 days from the date of this e-mail. We transmitted the draft RAIs to you on December 7, 2015, and we had a clarification call on January 7, 2016. Your timely responses will allow the U.S. Nuclear Regulatory Commission staff to complete its review on schedule.
- 1. Assuming 100 cfm [cubic feet per minute] damper leakage, what impact does the installed back-draft dampers have on CR ventilation analyses assumptions or unfiltered in-leakage testing methods/results?
- 2. Containment spray in recirculation mode following Loss-of-Coolant Accident for fission product cleanup
- explain requiring operation within 12 minutes. Does this change impact any bounding containment analyses?
- 3. In Surveillance Requirement (SR) 3.6.3.1, the SR direction is to verify that the 48 inch containment purge valve is sealed closed with a frequency that is in accordance with the Surveillance Frequency Control Program. What is the initial frequency? Discuss how the frequency was determined and how the frequency may change over time.
- 4. In SR 3.6.3.7, explain the rational for the removal of the surveillance within 92 days after opening the containment purge supply and exhaust valves.
- 5. In the Bases, Containment Purge System (48 inch purge valves), the text was changed to delete the no more than 200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> per calendar year flow path limit from the 48 inch purge valves. Is there a new limit? If a limit is no longer required, please justify.
Siva P. Lingam U.S. Nuclear Regulatory Commission Project Manager (NRR/DORL/LPL4-1)
Diablo Canyon Nuclear Power Plant Location: O8-D5; Mail Stop: O8-B3 Telephone: 301-415-1564; Fax: 301-415-1222 1
E-mail address: siva.lingam@nrc.gov 2
Hearing Identifier: NRR_PMDA Email Number: 2587 Mail Envelope Properties (20a5b60130aa4a5482e5c3ed8724c321)
Subject:
Diablo Canyon 1 and 2 - Requests for Additional Information for License Amendment Request 15-03 to Adopt the Alternative Source Term per 10 CFR 50.67 (TAC Nos. MF6399 and MF6400)
Sent Date: 1/11/2016 9:22:09 AM Received Date: 1/11/2016 9:22:00 AM From: Lingam, Siva Created By: Siva.Lingam@nrc.gov Recipients:
"Pascarelli, Robert" <Robert.Pascarelli@nrc.gov>
Tracking Status: None "Dennig, Robert" <Robert.Dennig@nrc.gov>
Tracking Status: None "Bettle, Jerome" <Jerome.Bettle@nrc.gov>
Tracking Status: None "Woodyatt, Diana" <Diana.Woodyatt@nrc.gov>
Tracking Status: None
"'mjrm@pge.com'" <mjrm@pge.com>
Tracking Status: None "Thatipamala, Ramakrishna" <RNTT@pge.com>
Tracking Status: None "misf@pge.com" <misf@pge.com>
Tracking Status: None "Wright, Michael (ENG)" <MDW4@pge.com>
Tracking Status: None "Schrader, Kenneth (KJSe@pge.com)" <KJSe@pge.com>
Tracking Status: None Post Office: HQPWMSMRS04.nrc.gov Files Size Date & Time MESSAGE 2623 1/11/2016 9:22:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
Recipients Received:
