ML19252A021
| ML19252A021 | |
| Person / Time | |
|---|---|
| Site: | NuScale |
| Issue date: | 09/12/2019 |
| From: | Cayetano Santos NRC/NRO/DLSE/LB1 |
| To: | Samson Lee Office of New Reactors |
| Santos C, 415-7270 | |
| References | |
| Download: ML19252A021 (7) | |
Text
September 12, 2019 MEMORANDUM TO:
Samuel S. Lee, Chief Licensing Branch 1 Division of Licensing, Siting, and Environmental Analysis Office of New Reactors FROM:
Cayetano Santos, Jr., Project Manager /RA/
Licensing Branch 1 Division of Licensing, Siting, and Environmental Analysis Office of New Reactors
SUBJECT:
SUMMARY
OF THE AUGUST 27, 2019, PUBLIC TELECONFERENCE REGARDING THE INITIAL TEST PROGRAM IN NUSCALE POWER, LLCS DESIGN CERTIFICATION APPLICATION On August 27, 2019, a Category 1 public teleconference was held between the U.S.
Nuclear Regulatory Commission (NRC) staff and NuScale Power, LLC (NuScale). The purpose of the meeting was to discuss Pool Leak Detection System Test # 6, Emergency Core Cooling System Test #47, and Module Assembly Equipment Test #50, as described in the initial test program of NuScales design certification application. The meeting notice was posted on the NRC website and is also in the NRCs Agencywide Documents Access and Management System under Accession Number ML19196A293. The Meeting Summary is provided as, which captures the summary of topics discussed. The Meeting Agenda and List of Attendees are provided as Enclosures 2 and 3, respectively.
CONTACT: Cayetano Santos Jr., NRO/DLSE 301-415-7270
S. Lee 2
Docket No.52-048
Enclosures:
- 1. Meeting Summary
- 2. Meeting Agenda
- via email NRO-002 OFFICE DLSE/LB1:PM DLSE/LB1:LA DLSE/LB1:PM NAME CSantos MMoore CSantos (signed)
DATE 09/12/2019 09/10/2019 09/12/2019
U.S. NUCLEAR REGULATORY COMMISSION PUBLIC TELECONFERENCE REGARDING POOL LEAK DETECTION SYSTEM TEST # 6, EMERGENCY CORE COOLING SYSTEM TEST #47, AND MODULE ASSEMBLY EQUIPMENT TEST #50 IN NUSCALE POWER, LLCS INITIAL TEST PROGRAM MEETING
SUMMARY
August 27, 2019 The purpose of this meeting with NuScale Power, LLC (NuScale) was for the U.S. Nuclear Regulatory Commission (NRC) staff to obtain further information on three test abstracts described in the initial test program (ITP).
Pool Leak Detection System Test # 6 The NRC staff noted that for the Pool Leak Detection System, no tests are provided in the ITP to confirm that the spent fuel pool is properly constructed or that the system functions as described in the design certification application. The NRC staffs understanding is that the leakage chase channels for this system are designed to allow for cleaning, periodic inspection, and the identification of leakage. Other designs have included pre-operational tests for the spent fuel pool to confirm no leakage occurs through the liner. The NRC staffs concern is that leakage of borated water from the spent fuel pool would impact the structural integrity of the concrete behind the liner. NuScale responded that testing of liner integrity is performed during construction and not as part of the ITP. The ITP does verify that the Radiation Waste Drain System sump detects leakage and notifies the main control room. NuScale agreed to consider the staffs concerns and evaluate whether additional changes are warranted for Pool Leak Detection System Test #6.
Emergency Core Cooling System Test #47 The NRC staff stated that Emergency Core Cooling System (ECCS) Test #47 should verify that the system performs as predicted in the safety analysis. The current acceptance criteria listed in ECCS Test #47 only considers whether a given parameter exceeds a specified value. The NRC staff noted that the acceptance criteria could be revised to consider the general trends of variables similar to what was done for Decay Heat Removal System Test #48. NuScale commented on the difficulty associated with developing correlations for the ECCS variables suitable for test acceptance criteria. The NRC staff commented that it is open to a first plant only test (FPOT) of ECCS performance for the first NuScale Power Module. NuScale agreed to consider the NRC staffs concerns and comments.
Module Assembly Equipment Test #50 The NRC staff noted that since the module assembly equipment (MAE) is part of a heavy load handling system used near the ultimate heat sink, assurance that the system functions properly is needed. NuScale responded that the MAE is unique in that their function is verified before fuel load by exercising the equipment in the placement of the first NuScale Power Module. The
2 NRC staff commented that the specific concern is the lack of any tests of the interlocks or safety features of the system to prevent a heavy load drop. NuScale agreed to develop a test for the MAE to address the NRC staffs concerns.
There was an opportunity for members of the public to provide comments and ask questions.
No comments or questions were received.
U.S. NUCLEAR REGULATORY COMMISSION PUBLIC TELECONFERENCE REGARDING POOL LEAK DETECTION SYSTEM TEST # 6, EMERGENCY CORE COOLING SYSTEM TEST #47, AND MODULE ASSEMBLY EQUIPMENT TEST #50 IN NUSCALE POWER, LLCS INITIAL TEST PROGRAM MEETING AGENDA August 27, 2019 1:00 p.m. - 2:30 p.m.
The purpose of this teleconference was for the U.S. Nuclear Regulatory Commission (NRC) staff to discuss Pool Leak Detection System Test # 6, Emergency Core Cooling System Test #47, and Module Assembly Equipment Test #50 as described in the initial test program.
Time Topic Speaker 1:00 p.m. - 1:05 p.m.
Introductions
All 1:05 p.m. - 2:15 p.m.
Discussion of Test # 6, Test # 47, and Test # 50 in the ITP NRC/NuScale 2:15 p.m. - 2:30 p.m.
Public Comments Public 2:30 p.m.
Adjourn All
U.S. NUCLEAR REGULATORY COMMISSION PUBLIC TELECONFERENCE REGARDING POOL LEAK DETECTION SYSTEM TEST # 6, EMERGENCY CORE COOLING SYSTEM TEST #47, AND MODULE ASSEMBLY EQUIPMENT TEST #50 IN NUSCALE POWER, LLCS INITIAL TEST PROGRAM LIST OF ATTENDEES August 27, 2019 1:00 p.m. - 2:30 p.m.
Name Organization Cayetano Santos U.S. Nuclear Regulatory Commission (NRC)
Kerri Kavanagh NRC Paul Prescott NRC Taylor Lamb NRC Ryan Nolan NRC Angelo Stubbs NRC Raul Hernandez NRC Jeffrey Schmidt NRC Nadja Joergensen NuScale Power, LLC (NuScale)
Chris Maxwell NuScale Edan Engstrom NuScale