ML20098G237: Difference between revisions
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# Audit Follow-Up Item Completed Action 1 NuScale will update the description of the Action Completed: A Final Safety Analysis Inservice Test (IST) program for the Report (FSAR), Section 3.9.6 markup was ECCS valves (including the provided to the NRC in NuScale letter LO-1119-subcomponent valves) in the Design 67833, dated, November 13, 2019. The final Certification Application (DCA), including changes were provided to the NRC in FSAR the planned request to depart from the Revision 4, Errata letter dated, April 1, 2020 ASME OM Code requirements for the (ML20092L899). | # Audit Follow-Up Item Completed Action 1 NuScale will update the description of the Action Completed: A Final Safety Analysis Inservice Test (IST) program for the Report (FSAR), Section 3.9.6 markup was ECCS valves (including the provided to the NRC in NuScale letter LO-1119-subcomponent valves) in the Design 67833, dated, November 13, 2019. The final Certification Application (DCA), including changes were provided to the NRC in FSAR the planned request to depart from the Revision 4, Errata letter dated, April 1, 2020 ASME OM Code requirements for the (ML20092L899). | ||
Inadvertent Actuation Block (IAB) valve testing, to reflect the lessons learned from the ECCS Valve Design Demonstration Testing. | Inadvertent Actuation Block (IAB) valve testing, to reflect the lessons learned from the ECCS Valve Design Demonstration Testing. | ||
To supplement the IAB valve alternative request described in the NuScale November 13, 2019, letter, Revision 5 to the DCA will need to include, as part of the IAB valve alternative, the additional request related to stroke exercising that NuScale described after the February 4 ACRS meeting. | To supplement the IAB valve alternative request described in the NuScale {{letter dated|date=November 13, 2019|text=November 13, 2019, letter}}, Revision 5 to the DCA will need to include, as part of the IAB valve alternative, the additional request related to stroke exercising that NuScale described after the February 4 ACRS meeting. | ||
2 NuScale will update the DCA provisions Action Completed: FSAR section 6.3 was for the ECCS valve performance (such as modified to include ECCS block range and release the IAB valve performance attributes) to setting. A markup was provided in NuScale letter reflect the lessons learned from the LO-1019-67659, dated October 24, 2019 ECCS Valve Design Demonstration (ML19297H199). In addition, FSAR chapter 15 Testing. analyses were revised to reflect the ECCS block range and release setting. These changes were provided in final form in FSAR Revision 4. | 2 NuScale will update the DCA provisions Action Completed: FSAR section 6.3 was for the ECCS valve performance (such as modified to include ECCS block range and release the IAB valve performance attributes) to setting. A markup was provided in NuScale letter reflect the lessons learned from the LO-1019-67659, dated October 24, 2019 ECCS Valve Design Demonstration (ML19297H199). In addition, FSAR chapter 15 Testing. analyses were revised to reflect the ECCS block range and release setting. These changes were provided in final form in FSAR Revision 4. | ||
3 NuScale will update the applicable ECCS Action Completed: The IAB range shift has been valve design documents to reflect the changed in the ECCS valve design specification lessons learned from the ECCS Valve document (EQ-B020-2140), and engineering Design Demonstration Testing. change orders have been approved for other affected NuScale documents. The design changes to the ECCS valve (e.g., the change in orifice placement and sizes), have been updated in the component models and drawings maintained by the vendor.}} | 3 NuScale will update the applicable ECCS Action Completed: The IAB range shift has been valve design documents to reflect the changed in the ECCS valve design specification lessons learned from the ECCS Valve document (EQ-B020-2140), and engineering Design Demonstration Testing. change orders have been approved for other affected NuScale documents. The design changes to the ECCS valve (e.g., the change in orifice placement and sizes), have been updated in the component models and drawings maintained by the vendor.}} | ||
Latest revision as of 09:34, 24 September 2022
| ML20098G237 | |
| Person / Time | |
|---|---|
| Site: | NuScale |
| Issue date: | 04/07/2020 |
| From: | Rad Z NuScale |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LO-0320-69419 | |
| Download: ML20098G237 (3) | |
Text
LO-0320-69419 April 7, 2020 Docket No.52-048 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738
SUBJECT:
NuScale Power, LLC Submittal of Remaining Closure Items for the Emergency Core Cooling System Valve Failure Mode Effects Analysis Audit Items
REFERENCES:
- 1. Memorandum from Samuel Lee, U.S Nuclear Regulatory Commission to Marieliz Vera Amadiz, U.S. Nuclear Regulatory Commission Staff Report of Regulatory Audit of Failure Modes and Effects Analysis and Other Supporting Documents for Emergency Core Cooling System Valves in the NuScale Power, LLC Design Certification Application, dated August 14, 2018 (ML18219B634)
- 2. NuScale Letter to NRC, NuScale Power, LLC Submittal of Resolution Plans and Classification for ECCS Valve FMEA Audit Follow-Up Items, dated September 21, 2018 (ML18264A312)
- 3. NuScale Letter to NRC, NuScale Power, LLC Submittal of Responses to ECCS Valve FMEA Audit Follow-Up Items, dated August 21, 2019 (ML19233A203)
- 4. NuScale Letter to NRC, NuScale Power, LLC Submittal of ECCS Valve FMEA Audit Supplemental Items, dated October 24, 2019 (ML19297H199)
- 5. NuScale Letter to NRC, NuScale Power, LLC Submittal of Changes to Final Safety Analysis Report, Section 3.9.6, Functional Design, Qualification, and Inservice Testing Programs for Pumps, Valves and Dynamic Restraints, dated November 13, 2019 (ML19317E531)
The purpose of this letter is to provide the NRC with closure information related to the emergency core cooling system valve failure mode effects analysis audit items. This documents the remaining follow-up items from the NRC Audit (Reference 1) as agreed to by NuScale Power, LLC in the closure plan (Reference 2). Closure of additional follow-up items were provided in References 3, 4 and 5. The attachment to this letter provides the remaining closure information.
This letter makes no regulatory commitments and no revisions to any existing regulatory commitments.
NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360-0500 Fax 541.207.3928 www.nuscalepower.com
LO-0320-69419 Page 2 of 2 04/07/2020 If you have any questions, please contact Rebecca Norris at 514-602-1260 or at RNorris@nuscalepower.com.
Sincerely, Zackary W. Rad Director, Regulatory Affairs NuScale Power, LLC Distribution: Gregory Cranston, NRC, OWFN-8H12 Michael Dudek, NRC, OWFN-8H12
Attachment:
Remaining Closure Items for the Emergency Core Cooling System Failure Mode Effects Analysis Audit Items NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360-0500 Fax 541.207.3928 www.nuscalepower.com
LO-0320-69419 Attachment Page 1 of 1 Remaining Closure items for the Emergency Core Cooling System Valve Failure Mode Effects Analysis Audit Items The following table provides NuScales status and closure details regarding the Emergency Core Cooling System (ECCS) Valve Failure Mode Effects Analysis (FMEA) Audit agreed to by NuScale.
- Audit Follow-Up Item Completed Action 1 NuScale will update the description of the Action Completed: A Final Safety Analysis Inservice Test (IST) program for the Report (FSAR), Section 3.9.6 markup was ECCS valves (including the provided to the NRC in NuScale letter LO-1119-subcomponent valves) in the Design 67833, dated, November 13, 2019. The final Certification Application (DCA), including changes were provided to the NRC in FSAR the planned request to depart from the Revision 4, Errata letter dated, April 1, 2020 ASME OM Code requirements for the (ML20092L899).
Inadvertent Actuation Block (IAB) valve testing, to reflect the lessons learned from the ECCS Valve Design Demonstration Testing.
To supplement the IAB valve alternative request described in the NuScale November 13, 2019, letter, Revision 5 to the DCA will need to include, as part of the IAB valve alternative, the additional request related to stroke exercising that NuScale described after the February 4 ACRS meeting.
2 NuScale will update the DCA provisions Action Completed: FSAR section 6.3 was for the ECCS valve performance (such as modified to include ECCS block range and release the IAB valve performance attributes) to setting. A markup was provided in NuScale letter reflect the lessons learned from the LO-1019-67659, dated October 24, 2019 ECCS Valve Design Demonstration (ML19297H199). In addition, FSAR chapter 15 Testing. analyses were revised to reflect the ECCS block range and release setting. These changes were provided in final form in FSAR Revision 4.
3 NuScale will update the applicable ECCS Action Completed: The IAB range shift has been valve design documents to reflect the changed in the ECCS valve design specification lessons learned from the ECCS Valve document (EQ-B020-2140), and engineering Design Demonstration Testing. change orders have been approved for other affected NuScale documents. The design changes to the ECCS valve (e.g., the change in orifice placement and sizes), have been updated in the component models and drawings maintained by the vendor.