ML21214A079
| ML21214A079 | |
| Person / Time | |
|---|---|
| Site: | HI-STORE |
| Issue date: | 08/02/2021 |
| From: | Holtec |
| To: | Office of Nuclear Material Safety and Safeguards |
| Cuadrado-Caraballo J | |
| References | |
| Download: ML21214A079 (10) | |
Text
www.holtec.com Holtec International - HISTORE RAIs - Chapters 3, 6, 7, and 9
Chapter 3 RAIs
RAI 32
NRC requests personnel actions for excessive contamination Holtec will update SAR chapter to provide description of decontamination activities
RAI 33
NRC needs justification on canister lid surveys representing the entire canister Holtecs response provides information on why the lid is expected to have more contamination than any other locations www.holtec.com l Page 2
Chapter 6 RAIs RAI 61 is proprietary - in summary - Holtec will provide the requested analysis
RAI 62
NRC requests justification related to the pressure and temperature of the canisters under monthly average temperature Holtec will provide revised temperature and pressure induced stresses
RAI 65
NRC requests clarification on use of approved methodology for operational limit Holtec will clarify SAR language accordingly www.holtec.com l Page 3
Chapter 6 RAIs
RAI 67
NRC requests information on removal of outlet vents during HITRAC use Holtec will clarify the SAR to indicate the need for a temporary screen
RAI 68
NRC needs information on time limits for vent blockage Holtec will update the SAR to address these time limits
RAI 69
NRC requests clarification on safety classification of temperature monitoring equipment throughout the SAR Holtec will revise other portions of the SAR for consistency www.holtec.com l Page 4
Chapter 6 RAIs RAI 611 NRC requests clarifications to the SAR and Tech Specs to give appropriate headings and descriptions Holtec will clarify SAR and Tech Specs accordingly RAI 612 NRC requests a maximum ambient temperature for operations Holtec will update the SAR accordingly RAI 618 - RAI is proprietary, but in brief, Holtec will provide requested analysis www.holtec.com l Page 5
Chapter 6 RAIs RAI 619 NRC requests assumptions related to CTB collapse Holtec will update thermal chapter based on updated structural building qualification RAI 621 NRC needs further details on reduced concrete density after transfer cask accident Holtec will provide the requested technical justification RAI 625 NRC requests justification for Unconditionally Safe Threshold concept Holtec will update SAR to remove UST www.holtec.com l Page 6
Chapter 6 RAIs RAI 626 NRC requests clarification of transportation cask condition after building collapse Holtec will update SAR based on updated structural analysis RAI 628 NRC needs clarification of the time limits for air flow blockage while MPC is in the HI TRAC Holtec will update the notes to reference appropriate analyses RAI 632 NRC requests demonstration that thermal stresses have been appropriately addressed Holtec will provide supporting analyses for demonstration RAI 634 NRC requests clarification on rod rupture pressure increase impact on heat transfer Holtec will update SAR www.holtec.com l Page 7
Chapter 7 RAIs RAI 713 NRC requests updated Technical Specifications based on the HISTAR 190 Holtec will update Tech Specs to incorporate HISTAR 190 information RAI 714 NRC needs clarification on closure lid and dose rate locations Holtec response will clarify that the lid configuration is the same, additional description will be added to the SAR RAI 715 - Proprietary RAI, Holtec will provide requested information www.holtec.com l Page 8
Chapter 7 RAIs RAI 716 RAI requests Holtec Calculation Holtec will provide with RAI responses RAI 718 RAI asks for more information related to the methodology and material properties used in C14 generation calculation Holtec response will provide explanation RAI 719 NRC requests justification for the air activation and definition of proximity of dose location Holtec response will provide the requested justification and clarification www.holtec.com l Page 9
Chapter 9 RAIs
RAI 93
NRC needs clarification on onsite operations prior to receipt inspection Holtec response will clarify that confinement is not challenged prior to receipt inspection
RAI 96
NRC requests updated materials license based on response to RAI 96 Holtec will provide with RAI responses www.holtec.com l Page 10