ML24347A062
| ML24347A062 | |
| Person / Time | |
|---|---|
| Site: | 99902069 |
| Issue date: | 12/12/2024 |
| From: | NRC |
| To: | NRC/NRR/DANU |
| References | |
| Download: ML24347A062 (4) | |
Text
From:
Brian Bettes Sent:
Thursday, December 12, 2024 9:18 AM To:
Delaney Simmons; Drew Peebles Cc:
Cayetano Santos; Josh Borromeo
Subject:
Audit Questions Related to Kairos Safety Analysis Methodology Topical Report Attachments:
2nd set of audit questions Kairos KP-SAM TR FINAL Public Version_Redacted.pdf Hello Delaney and Drew, Attached is the second set of audit questions related to the NRC staffs audit of Kaiross safety analysis topical report. This is the public version in which the proprietary and export-controlled information has been redacted. The non-public version has been shared with Kairos via the Box secure portal.
Please let me know if you have any questions.
- Best, Brian Brian L. Bettes Project Manager, Advanced Reactor Licensing Branch 1 Division of Advanced Reactors and Non-Power Production and Utilization Facilities Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission
Hearing Identifier:
KairosPower_PreApp_Public Email Number:
18 Mail Envelope Properties (SA1PR09MB110997B75D327138D45E206649C3F2)
Subject:
Audit Questions Related to Kairos Safety Analysis Methodology Topical Report Sent Date:
12/12/2024 9:17:51 AM Received Date:
12/12/2024 9:17:00 AM From:
Brian Bettes Created By:
Brian.Bettes@nrc.gov Recipients:
"Cayetano Santos" <Cayetano.Santos@nrc.gov>
Tracking Status: None "Josh Borromeo" <Joshua.Borromeo@nrc.gov>
Tracking Status: None "Delaney Simmons" <simmons@kairospower.com>
Tracking Status: None "Drew Peebles" <peebles@kairospower.com>
Tracking Status: None Post Office:
SA1PR09MB11099.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 640 12/12/2024 9:17:00 AM 2nd set of audit questions Kairos KP-SAM TR FINAL Public Version_Redacted.pdf 259370 Options Priority:
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No Reply Requested:
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Official Use Only - Proprietary and Export Controlled Information Official Use Only - Proprietary and Export Controlled Information o Confirm the experimental work described in section 4.3.1.6 of KP-TR-012-P-A, "KP-FHR Mechanistic Source Term Methodology Topical Report," revision 3 (ML22088A229), which we understand is outside the scope of this topical report, will be used to verify whether the assumption of an activity coefficient of 1.0 for the CsF vapor pressure is conservative.
[Question 5.5-1] Section 5.5.1, Bias Application, mentions that certain Flibe properties, including surface tension, are specified for salt spill events. Please describe how surface tension is used in the salt spill analysis and whether it has a significant impact on radionuclide release (e.g., via bubble formation and popping).