ML13342A002: Difference between revisions

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| issue date = 12/05/2013
| issue date = 12/05/2013
| title = 12/5/13 E-mail from R.Guzman to B.Shingleton - Follow-up RAI to Pressure Temperature Curve LAR Supplement 3, Oconee Nuclear Station Units 1, 2, and 3 (TAC Nos. MF0763/64/65)
| title = 12/5/13 E-mail from R.Guzman to B.Shingleton - Follow-up RAI to Pressure Temperature Curve LAR Supplement 3, Oconee Nuclear Station Units 1, 2, and 3 (TAC Nos. MF0763/64/65)
| author name = Guzman R V
| author name = Guzman R
| author affiliation = NRC/NRR/DORL/LPLII-1
| author affiliation = NRC/NRR/DORL/LPLII-1
| addressee name = Newman S C, Shingleton B
| addressee name = Newman S, Shingleton B
| addressee affiliation = Duke Energy Carolinas, LLC
| addressee affiliation = Duke Energy Carolinas, LLC
| docket = 05000269, 05000270, 05000287
| docket = 05000269, 05000270, 05000287
| license number =  
| license number =  
| contact person = Guzman R V
| contact person = Guzman R
| case reference number = TAC MF0763, TAC MF0764, TAC MF0765
| case reference number = TAC MF0763, TAC MF0764, TAC MF0765
| document type = E-Mail
| document type = E-Mail
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=Text=
=Text=
{{#Wiki_filter:From: Guzman, Richard Sent: Thursday, December 05, 2013 4:33 PM To: 'Newman, Stephen'; Shingleton, Boyd Subject: RE: Oconee Nuclear Station _ NRC Commitment and RAI Submittals Boyd, As we discussed, based on his preliminary review of the 11/29/13 supplemental response, the technical reviewer has determined that the information regarding the upper-shelf energy evaluation for the RPV lower head is not complete. Below is a description of the follow-on information request. We can support a teleconference to discuss in more detail if needed.
{{#Wiki_filter:From:                     Guzman, Richard Sent:                     Thursday, December 05, 2013 4:33 PM To:                       'Newman, Stephen'; Shingleton, Boyd
 
==Subject:==
RE: Oconee Nuclear Station _ NRC Commitment and RAI Submittals
: Boyd, As we discussed, based on his preliminary review of the 11/29/13 supplemental response, the technical reviewer has determined that the information regarding the upper-shelf energy evaluation for the RPV lower head is not complete. Below is a description of the follow-on information request. We can support a teleconference to discuss in more detail if needed.
The November 29, 2013, upper-shelf energy (USE) evaluation for the RPV lower head materials having fluences greater than 1017 n/cm2 is incomplete. The licensee states that only USE decreases. Without referencing the initial USE values for the RPV lower head materials, it is not known whether or not the USE at 54 EFPY (considering USE decreases) will be above 50 ft-lbs.
The November 29, 2013, upper-shelf energy (USE) evaluation for the RPV lower head materials having fluences greater than 1017 n/cm2 is incomplete. The licensee states that only USE decreases. Without referencing the initial USE values for the RPV lower head materials, it is not known whether or not the USE at 54 EFPY (considering USE decreases) will be above 50 ft-lbs.
The technical reviewer notes that there are two options to consider if the initial USE values associated with the lower head materials cannot be located: (1) using generic initial USE values applicable to Oconee RPV lower heads, or (2) using the equivalent margins analysis of ASME Code, Section XI, Appendix K, supplemented by RG 1.161, "Evaluation of Reactor Pressure Vessels with Charpy Upper-Shelf Energy Less Than 50 ft-lb."  We can also discuss these approaches, if applicable, during the teleconference call. Thanks, Rich  
The technical reviewer notes that there are two options to consider if the initial USE values associated with the lower head materials cannot be located: (1) using generic initial USE values applicable to Oconee RPV lower heads, or (2) using the equivalent margins analysis of ASME Code, Section XI, Appendix K, supplemented by RG 1.161, Evaluation of Reactor Pressure Vessels with Charpy Upper-Shelf Energy Less Than 50 ft-lb. We can also discuss these approaches, if applicable, during the teleconference call.
: Thanks, Rich Rich Guzman Sr. Project Manager NRR/DORL US NRC 301-415-1030 From: Newman, Stephen [mailto:Stephen.Newman@duke-energy.com]
Sent: Friday, November 29, 2013 5:05 AM To: Guzman, Richard Cc: Wasik, Christopher J; Shingleton, Boyd; Severance, Sandra N


Rich Guzman Sr. Project Manager NRR/DORL US NRC 301-415-1030
==Subject:==
Oconee Nuclear Station _ NRC Commitment and RAI Submittals
: Richard, Please find attached two submittals associated with a reactor vessels internals inspection program LAR commitment and a PT Limit Curve LAR RAI. Both letters are dated 11/29/13. Please let me know that you received them intact.
Best Regards,


From: Newman, Stephen [mailto:Stephen.Newman@duke-energy.com]  Sent: Friday, November 29, 2013 5:05 AM To: Guzman, Richard Cc: Wasik, Christopher J; Shingleton, Boyd; Severance, Sandra N Subject: Oconee Nuclear Station _ NRC Commitment and RAI Submittals  Richard,  Please find attached two submittals associated with a reactor vessels internals inspection program LAR commitment and a PT Limit Curve LAR RAI. Both letters are dated 11/29/13. Please let me know that you received them intact.
Stephen C. Newman Sr. Engineer, Regulatory Affairs Oconee Nuclear Station (864) 873-4388}}
Best Regards, Stephen C. Newman Sr. Engineer, Regulatory Affairs Oconee Nuclear Station (864) 873-4388  
}}

Latest revision as of 10:36, 4 November 2019

12/5/13 E-mail from R.Guzman to B.Shingleton - Follow-up RAI to Pressure Temperature Curve LAR Supplement 3, Oconee Nuclear Station Units 1, 2, and 3 (TAC Nos. MF0763/64/65)
ML13342A002
Person / Time
Site: Oconee  Duke Energy icon.png
Issue date: 12/05/2013
From: Richard Guzman
Plant Licensing Branch II
To: Newman S, Shingleton B
Duke Energy Carolinas
Guzman R
References
TAC MF0763, TAC MF0764, TAC MF0765
Download: ML13342A002 (2)
v • d • e


Text

From: Guzman, Richard Sent: Thursday, December 05, 2013 4:33 PM To: 'Newman, Stephen'; Shingleton, Boyd

Subject:

RE: Oconee Nuclear Station _ NRC Commitment and RAI Submittals

Boyd, As we discussed, based on his preliminary review of the 11/29/13 supplemental response, the technical reviewer has determined that the information regarding the upper-shelf energy evaluation for the RPV lower head is not complete. Below is a description of the follow-on information request. We can support a teleconference to discuss in more detail if needed.

The November 29, 2013, upper-shelf energy (USE) evaluation for the RPV lower head materials having fluences greater than 1017 n/cm2 is incomplete. The licensee states that only USE decreases. Without referencing the initial USE values for the RPV lower head materials, it is not known whether or not the USE at 54 EFPY (considering USE decreases) will be above 50 ft-lbs.

The technical reviewer notes that there are two options to consider if the initial USE values associated with the lower head materials cannot be located: (1) using generic initial USE values applicable to Oconee RPV lower heads, or (2) using the equivalent margins analysis of ASME Code,Section XI, Appendix K, supplemented by RG 1.161, Evaluation of Reactor Pressure Vessels with Charpy Upper-Shelf Energy Less Than 50 ft-lb. We can also discuss these approaches, if applicable, during the teleconference call.

Thanks, Rich Rich Guzman Sr. Project Manager NRR/DORL US NRC 301-415-1030 From: Newman, Stephen [1]

Sent: Friday, November 29, 2013 5:05 AM To: Guzman, Richard Cc: Wasik, Christopher J; Shingleton, Boyd; Severance, Sandra N

Subject:

Oconee Nuclear Station _ NRC Commitment and RAI Submittals

Richard, Please find attached two submittals associated with a reactor vessels internals inspection program LAR commitment and a PT Limit Curve LAR RAI. Both letters are dated 11/29/13. Please let me know that you received them intact.

Best Regards,

Stephen C. Newman Sr. Engineer, Regulatory Affairs Oconee Nuclear Station (864) 873-4388

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