ML13357A252: Difference between revisions
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| document type = E-Mail | | document type = E-Mail | ||
| page count = 5 | | page count = 5 | ||
| project = TAC:MF2574 | |||
| stage = RAI | |||
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=Text= | |||
{{#Wiki_filter:1NRR-PMDAPEm Resource From:Lyon, Fred Sent:Monday, December 23, 2013 11:05 AM To:Wideman Steve G Cc:Muilenburg William T; Fici Melanie R; Blair Jeff T | |||
==Subject:== | |||
RE: Wolf Creek Generating Station - Request fo r Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574)That works for us. Replace the original ESGB-RAI-1 and -2 with the question below, and call it ESGB-RAI-1. Thanks, Fred From: Wideman Steve G [mailto:stwidem@WCNOC.com] | |||
Sent: Monday, December 23, 2013 9:57 AM To: Lyon, Fred Cc: Muilenburg William T; Fici Melanie R; Blair Jeff T | |||
==Subject:== | |||
RE: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574) | |||
Fred - in looking at revised ESGB-RAI-2, it really appears to be essentially the same as ESGB-RAI-1 with the exception of describing the analysis methodology. It would appear to me that the revised ESGB-RAI-2 should replace the original ESGB-RAI-1 and ESGB-RAI-2. | |||
Steve ESGB-RAI-1 | |||
Please identify all sources of post-loss-of-coolant accident (LOCA) strong acid generation in containment and time dependent values of strong acid concentrations in the sump for a period of 30 days post-LOCA. | |||
ESGB-RAI-2 Please describe the ORIGEN-S computer code used to determine the pH in the sump water post-LOCA and the differences between it and ORIGEN-2/ARP. Please provide the input and output data of the program. | |||
Describe the analysis methodology used to determine the pH in the sump water during the period of 30 days post-LOCA. Include detailed calculations of time dependent pH values in the sump during a 30 day period post-LOCA to demonstrate that the pH remains basic throughout this time period. | |||
From: Lyon, Fred [mailto:Fred.Lyon@nrc.gov | |||
] Sent: Monday, December 23, 2013 8:39 AM To: Wideman Steve G Cc: Muilenburg William T | |||
==Subject:== | |||
FW: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574) | |||
Steve, you were right. Please see the revised question below, and replace ESGB-RAI-2 in my RAI letter. You can reference this email in your response. Thanks, Fred | |||
From: Obodoako, Aloysius Sent: Monday, December 23, 2013 9:31 AM 2To: Lyon, Fred | |||
==Subject:== | |||
RE: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574) | |||
Hi Fred, | |||
I reviewed the RAI and draft licensee response and it answers my question. I think I must have confused the reactor vessel environment and the post-LOCA sump analyses. The intent of ESGB-RAI-2 was to request for the following information: | |||
Describe the analysis methodology used to determine the pH in the sump water during the period of 30 days post-LOCA. Include detailed calculations of time dependent pH values in the sump during a 30 day period post-LOCA to demonstrate that the pH remains basic throughout this time period. | |||
How do you propose we move forward. Should I draw up another RAI, which we will issue formally to gather this information or can we modify ESGB-RAI-2 such that it reflects the above request? | |||
Aloysius | |||
From: Lyon, Fred Sent: Friday, December 20, 2013 8:03 AM To: Obodoako, Aloysius Cc: Kulesa, Gloria | |||
==Subject:== | |||
FW: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574) | |||
Please see the proposed answer below to your RAI question. The licensee wants to make sure they understand what you're asking for and why. The question didn't seem to be logical since they didn't use a computer code to do the pH determination. Let me know if you need to chat with them. | |||
Thanks, Fred (x2296) | |||
From: Wideman Steve G [mailto:stwidem@WCNOC.com] | |||
Sent: Thursday, December 19, 2013 10:11 AM To: Lyon, Fred Cc: Fici Melanie R | |||
==Subject:== | |||
RE: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574) | |||
Fred - per our discussion on December 18, 2013 regarding RAI ESGB-RAI-2, provided below is the draft response for your discussion with the technical branch. | |||
ESGB-RAI-2: "Please describe the ORIGEN-S computer code used to determine the pH in the sump water post-LOCA and the differences between it and ORIGEN-2/ARP. Please provide the input and output data of the program." | |||
DRAFT RESPONSE: In Enclosure VI of the LAR, Section 4.4.2.1 (page 4-105) it indicates that no computer codes were used in this analysis (referring to the containment sump pH analysis). This section specifically states: | |||
"No computer codes were used in this analysis. To determine the pH in the CLB analysis, NaOH and H3BO3 molarities were first calculated and then used with Oak Ridge National Laboratory (ORNL) titration curve data to determine the pH of the spray and sump solutions during the injection and recirculation phases of ECCS | |||
operation." | |||
3The information provided in Section 4.4.2.1 is similar to a V. C. Summer Nuclear Station letter submitted on June 15, 2009 (ADAMS Accession Number ML091680063) in response to a similar RAI question. | |||
Steve Wideman WCNOC Licensing 620-364-4037 Cell - 620-490-0449 | |||
From: Lyon, Fred [mailto:Fred.Lyon@nrc.gov | |||
] Sent: Monday, December 16, 2013 2:46 PM To: Wideman Steve G Cc: Muilenburg William T | |||
==Subject:== | |||
FW: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574) | |||
From: nrc_mail_1-2 Resource [mailto:nrc_mail_1-2.Resource@nrc.gov | |||
] Sent: Monday, December 16, 2013 10:46 AM To: Lyon, Fred | |||
==Subject:== | |||
Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westin ghouse Core Desi gn and Safety Analysis (TAC No. MF2574) | |||
Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574) | |||
ADAMS Accession No.: ML13345B335 | |||
--- The attached document is being sent to you per your request to receive electronic mailings, if you wish to be removed follow the instructions below. The document is publicly available and will be accessible via the public web site Electronic Reading Room in the Agency Document Access and Management System (ADAMS), | |||
http://www.nrc.gov/reading-rm/adams.html , generally within six days. To access this document use the ADAMS number provided in this email. Documents containing proprietary or safeguards information are not publicly available and will not be sent using the electronic mailing system. You are currently subscribed to wolfcreek as: | |||
Fred.Lyon@nrc.gov | |||
. To unsubscribe: Please go to the NRC's public website http://www.nrc.gov/public-involve/listserver/plants-by-region.html Once at the site, type in your e-mail address in the space provided and check the box(es) that correspond to the list(s) you would like to unsubscribe from. | |||
Then click the Un subscribe button. | |||
4 or send an email to lyris@nrc.gov with the following information in the subject line unsubscribe wolfcreek Fred.Lyon@nrc.gov | |||
Hearing Identifier: NRR_PMDA Email Number: 969 Mail Envelope Properties (Fred.Lyon@nrc.gov20131223110400) | |||
==Subject:== | |||
RE: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574) Sent Date: 12/23/2013 11:04:43 AM Received Date: 12/23/2013 11:04:00 AM From: Lyon, Fred Created By: Fred.Lyon@nrc.gov Recipients: "Muilenburg William T" <wimuile@WCNOC.com> Tracking Status: None "Fici Melanie R" <mefici@WCNOC.com> Tracking Status: None "Blair Jeff T" <jeblair@WCNOC.com> | |||
Tracking Status: None "Wideman Steve G" <stwidem@WCNOC.com> Tracking Status: None | |||
Post Office: Files Size Date & Time MESSAGE 7290 12/23/2013 11:04:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:}} |
Revision as of 10:05, 3 July 2018
ML13357A252 | |
Person / Time | |
---|---|
Site: | Wolf Creek ![]() |
Issue date: | 12/23/2013 |
From: | Lyon F Division of Operating Reactor Licensing |
To: | Wideman S G Wolf Creek |
References | |
MF2574 | |
Download: ML13357A252 (5) | |
Text
1NRR-PMDAPEm Resource From:Lyon, Fred Sent:Monday, December 23, 2013 11:05 AM To:Wideman Steve G Cc:Muilenburg William T; Fici Melanie R; Blair Jeff T
Subject:
RE: Wolf Creek Generating Station - Request fo r Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574)That works for us. Replace the original ESGB-RAI-1 and -2 with the question below, and call it ESGB-RAI-1. Thanks, Fred From: Wideman Steve G [1]
Sent: Monday, December 23, 2013 9:57 AM To: Lyon, Fred Cc: Muilenburg William T; Fici Melanie R; Blair Jeff T
Subject:
RE: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574)
Fred - in looking at revised ESGB-RAI-2, it really appears to be essentially the same as ESGB-RAI-1 with the exception of describing the analysis methodology. It would appear to me that the revised ESGB-RAI-2 should replace the original ESGB-RAI-1 and ESGB-RAI-2.
Steve ESGB-RAI-1
Please identify all sources of post-loss-of-coolant accident (LOCA) strong acid generation in containment and time dependent values of strong acid concentrations in the sump for a period of 30 days post-LOCA.
ESGB-RAI-2 Please describe the ORIGEN-S computer code used to determine the pH in the sump water post-LOCA and the differences between it and ORIGEN-2/ARP. Please provide the input and output data of the program.
Describe the analysis methodology used to determine the pH in the sump water during the period of 30 days post-LOCA. Include detailed calculations of time dependent pH values in the sump during a 30 day period post-LOCA to demonstrate that the pH remains basic throughout this time period.
From: Lyon, Fred [mailto:Fred.Lyon@nrc.gov
] Sent: Monday, December 23, 2013 8:39 AM To: Wideman Steve G Cc: Muilenburg William T
Subject:
FW: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574)
Steve, you were right. Please see the revised question below, and replace ESGB-RAI-2 in my RAI letter. You can reference this email in your response. Thanks, Fred
From: Obodoako, Aloysius Sent: Monday, December 23, 2013 9:31 AM 2To: Lyon, Fred
Subject:
RE: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574)
Hi Fred,
I reviewed the RAI and draft licensee response and it answers my question. I think I must have confused the reactor vessel environment and the post-LOCA sump analyses. The intent of ESGB-RAI-2 was to request for the following information:
Describe the analysis methodology used to determine the pH in the sump water during the period of 30 days post-LOCA. Include detailed calculations of time dependent pH values in the sump during a 30 day period post-LOCA to demonstrate that the pH remains basic throughout this time period.
How do you propose we move forward. Should I draw up another RAI, which we will issue formally to gather this information or can we modify ESGB-RAI-2 such that it reflects the above request?
Aloysius
From: Lyon, Fred Sent: Friday, December 20, 2013 8:03 AM To: Obodoako, Aloysius Cc: Kulesa, Gloria
Subject:
FW: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574)
Please see the proposed answer below to your RAI question. The licensee wants to make sure they understand what you're asking for and why. The question didn't seem to be logical since they didn't use a computer code to do the pH determination. Let me know if you need to chat with them.
Thanks, Fred (x2296)
From: Wideman Steve G [2]
Sent: Thursday, December 19, 2013 10:11 AM To: Lyon, Fred Cc: Fici Melanie R
Subject:
RE: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574)
Fred - per our discussion on December 18, 2013 regarding RAI ESGB-RAI-2, provided below is the draft response for your discussion with the technical branch.
ESGB-RAI-2: "Please describe the ORIGEN-S computer code used to determine the pH in the sump water post-LOCA and the differences between it and ORIGEN-2/ARP. Please provide the input and output data of the program."
DRAFT RESPONSE: In Enclosure VI of the LAR, Section 4.4.2.1 (page 4-105) it indicates that no computer codes were used in this analysis (referring to the containment sump pH analysis). This section specifically states:
"No computer codes were used in this analysis. To determine the pH in the CLB analysis, NaOH and H3BO3 molarities were first calculated and then used with Oak Ridge National Laboratory (ORNL) titration curve data to determine the pH of the spray and sump solutions during the injection and recirculation phases of ECCS
operation."
3The information provided in Section 4.4.2.1 is similar to a V. C. Summer Nuclear Station letter submitted on June 15, 2009 (ADAMS Accession Number ML091680063) in response to a similar RAI question.
Steve Wideman WCNOC Licensing 620-364-4037 Cell - 620-490-0449
From: Lyon, Fred [mailto:Fred.Lyon@nrc.gov
] Sent: Monday, December 16, 2013 2:46 PM To: Wideman Steve G Cc: Muilenburg William T
Subject:
FW: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574)
From: nrc_mail_1-2 Resource [mailto:nrc_mail_1-2.Resource@nrc.gov
] Sent: Monday, December 16, 2013 10:46 AM To: Lyon, Fred
Subject:
Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westin ghouse Core Desi gn and Safety Analysis (TAC No. MF2574)
Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574)
ADAMS Accession No.: ML13345B335
--- The attached document is being sent to you per your request to receive electronic mailings, if you wish to be removed follow the instructions below. The document is publicly available and will be accessible via the public web site Electronic Reading Room in the Agency Document Access and Management System (ADAMS),
http://www.nrc.gov/reading-rm/adams.html , generally within six days. To access this document use the ADAMS number provided in this email. Documents containing proprietary or safeguards information are not publicly available and will not be sent using the electronic mailing system. You are currently subscribed to wolfcreek as:
Fred.Lyon@nrc.gov
. To unsubscribe: Please go to the NRC's public website http://www.nrc.gov/public-involve/listserver/plants-by-region.html Once at the site, type in your e-mail address in the space provided and check the box(es) that correspond to the list(s) you would like to unsubscribe from.
Then click the Un subscribe button.
4 or send an email to lyris@nrc.gov with the following information in the subject line unsubscribe wolfcreek Fred.Lyon@nrc.gov
Hearing Identifier: NRR_PMDA Email Number: 969 Mail Envelope Properties (Fred.Lyon@nrc.gov20131223110400)
Subject:
RE: Wolf Creek Generating Station - Request for Additional Information Re: Transition to Westinghouse Core Design and Safety Analysis (TAC No. MF2574) Sent Date: 12/23/2013 11:04:43 AM Received Date: 12/23/2013 11:04:00 AM From: Lyon, Fred Created By: Fred.Lyon@nrc.gov Recipients: "Muilenburg William T" <wimuile@WCNOC.com> Tracking Status: None "Fici Melanie R" <mefici@WCNOC.com> Tracking Status: None "Blair Jeff T" <jeblair@WCNOC.com>
Tracking Status: None "Wideman Steve G" <stwidem@WCNOC.com> Tracking Status: None
Post Office: Files Size Date & Time MESSAGE 7290 12/23/2013 11:04:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received: