ML19098A780

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LLC - Submittal of Presentation Materials Entitled ACRS Full Committee Presentation: NuScale Chapter 9, Auxiliary Systems, PM-0319-64807, Revision 0
ML19098A780
Person / Time
Site: NuScale
Issue date: 04/02/2019
From: Rad Z
NuScale
To:
Document Control Desk, Office of New Reactors
References
L0-0419-64807
Download: ML19098A780 (21)
v • d • e


Text

L0-0419-64807 April 2, 2019 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 Presentation Materials Entitled "ACRS Full Committee Presentation: NuScale Chapter 9, Auxiliary Systems," PM-0319-64807, Revision 0 The purpose of this submittal is to provide presentation materials to the NRC for use during the upcoming Advisory Committee on Reactor Safeguards (ACRS) NuScale Full Committee meeting on April 4, 2019. The materials support NuScale's presentation of Chapter 9, "Auxiliary Systems" of the NuScale design certification application.

The enclosure to this letter is the non proprietary version of the presentation entitled "ACRS Full Committee Presentation: NuScale Chapter 9, Auxiliary Systems," PM-0319-64807, Revision 0.

This letter makes no regulatory commitments and no revisions to any existing regulatory commitments.

If you have any qu*estions, please contact Carrie Fosaaen at 541-452-7126 or at cfosaaen@nuscalepower.com.

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/z::;;;; Rad Director, Regulatory Affairs NuScale Power, LLC Distribution: Robert Taylor, NRC, OWFN-8H12 Michael Snodderly, NRC, TWFN-2E26 Samuel Lee, NRC, OWFN-8H12 Gregory Cranston, NRC, OWFN-8H12 Getachew Tesfaye, NRC, OWFN-8H12

Enclosure:

"ACRS Full Committee Presentation: NuScale Chapter 9, Auxiliary Systems," PM-0319-64807, Revision 0 NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360-0500 Fax 541.207.3928 www.nuscaleoower.com

L0-0419-64807

Enclosure:

"ACRS Full Committee Presentation: NuScale Chapter 9, Auxiliary Systems," PM-0319-64807, Revision 0 NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360-0500 Fax 541.207.3928 www.nuscalepower.com

NuScale Nonproprietary ACRS Full Committee Presentation:

NuScale Chapter 9, Auxiliary Systems PM-0319-64807 Revision: 0 Copyright 2019 by NuScale Power, LLC.

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Presentation Team Scott Harris Supervisor, Mechanical Systems

  • Corrie Nichol, Ph.D.

Refueling and Remote Handling Zackary Rad Director, Regulatory Affairs Zach Houghton Manager, Mechanical Design 2

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Reactor Building Crane

- Designed to ASME NOG-1 Type 1 (Meets NUREG-0554 requirements)

- Designed to be Seismic Category 1 (Required to withstand earthquake stress and retain load.)

- Movement uses redundant position control system interlocks

  • Risk Significant

- RBC has augmented Quality Control per Part Ill of the QAPD (because of Risk Significance)

- Augmented requirements conform to regulatory requirements. (SRP 9.1.5, NUREG-0554, NUREG-0612, and RG 1.13)

  • Non-Safety

- The RBC doesn't perform any functions that meet the regulatory definition of safety-*related.

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RBC Control System

  • Redundant limit switches

-"'. Hoist overtravel (upper limit switches, lower limit switches)

- Hoist overload

  • Interlocks

- Slack rope and Hoist drum rope mis-spooling

- Hoist overspeed

- Unbalanced load

- Reactor building crane-fuel handling machine (FHM) interlock

- Bridge and trolley overtravel limits

  • Safe Load Paths

- Restricted handling path and speed (30 fUmin traverse, 2 fUmin hoist)

- Operator monitored 4

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RBC Control System

  • E-stop system

- Physical relay controlled - no software

- Cuts power to motors and brakes (stops motors, sets brakes)

- Independent of any controls used for normal operation

  • Redundant Physical Load Control Systems

- Redundant gearboxes, cables, brakes on main hoist

- Redundant elements are all capable of performing their function individually at full load 5

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RBC Control System

  • In the event of failure of load lift control system:

- Redundant upper travel limit switches

- Two-blocking capable (Hard upper limit doesn't damage RBC)

- Raise to top of travel - fuel still covered, shielding maintained, reactor module base is 29 feet above the floor

  • In the event of a failure of travel control system:

- Traverse speed limited, operator monitors motion, speed is slow enough to enable operator to protect from impacts (30 ft/min)

- Energy absorbing hard stops, designed to protect in event of redundant limit switch failure (at end of travel for bridge and trolley) 6 PM-0319-64807 Revision: 0 Copyright 2019 by NuScale Power, LLC.

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Digital l&C Design and Development

  • Design and development of any RBC software-based components follows a rigorous quality assurance program to ensure high quality and reliable operation based on the safety and risk significance.
  • RBC Software Integrity Level (SIL)

- RBC is nonsafety-related, risk-significant which invokes SIL 3

- Independent verification and validation is required for SIL 3 and SIL 4 digital l&C.

  • NuScale Digital l&C Software Quality Assurance Program described in DCA Section 7.2.1, and complies with ASME NQA-1-2008 and NQA-1a-2009 7

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Initial Testing Program ASME NOG-1 and Other Required Controls Testing (from DCA Table 14.2-52 and 14.2-52a)

  • E-stop functionality
  • Functional testing of controls and components
  • Full load test
  • Test limit switches
  • Test speed limit at full load
  • Two-blocking
  • Brake function (redundant brakes for hoist and travel)
  • Lowering speed limit and lowering brake test 8

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Initial Testing Program Prerequisites

  • Site Acceptance Testing
  • Rated Load Test -ASME NOG Hoists (Main, Aux and Wet)
  • Rated Load Test -ANSI N14.6 - MLA and NPM lift fixture
  • Instrument Calibrations completed Component Testing
  • Controls - interlocks and limits on RBC motion tested
  • Loss of Control/Power or Seismic event - Results in no movement of bridge trolley, all hoists and brakes are set 9

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Initial Testing Program Component Testing (continued)

  • Load Path Verification includes:

- speeds - max limits enforced

- bridge/trolley movement - toggles from full speed to microspeed when in proximity to reference locations - other NPMs or load path boundary

- Main hoist movement - elevation enforced and proximity

- Main hoist rotation

- Full seating of NPM in reactor bay receiver 10 PM-0319-64807 Revision: 0 Copyright 2019 by NuScale Power, LLC.

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ITAAC ITAAC 03.10.01

  • ASME NOG-1 Inspection of main hoist machinery - redundant and non-redundant structural components - bridge, trolley, wire rope drum, hook, drive train, two-blocking and overload ITAAC 03.10.02 and 03.10.03
  • ASME NOG-1 Inspection of aux and wet hoist machinery - same scope as ITAAC 03.10.01 ITAAC 03.10.04
  • ASME NOG-1 main hoist Full Load (100o/o) and Rated Load (125°/o) testing ITAAC 03.10.05 and 03.10.06
  • ASME NOG-1 aux and wet hoists Full Load and Rated Load testing 11 PM-0319-64807 Revision: 0 Copyright 2019 by NuScale Power, LLC.

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ITAAC ITAAC 03.10.07

  • ANSI N 14.6 MLA single load path tested to 300°/o of Manufacturer's rating
  • ANSI N14.6 MLA dual load path tested to 150°/o of Manufacturer's rating

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Pool Liner

  • Liner Functions:

- Protect concrete from the borated pool water.

- Collect pool leakage and direct to sumps.

  • Seismic Category I LRWS
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Pool Liner

  • RXB floor slab is 1O feet of reinforced concrete
  • RXB floor slab is capable of withstanding a module drop from maximum hook height without damaging the concrete in such as a way as to cause significant damage to RXB concrete
  • Pool liner rupture would result in negligible loss from UHS inventory

- Flooding would fill gaps and channels between liner and RXB concrete 14 PM-0319-64807 Revision: 0 Copyright 2019 by NuScale Power, LLC.

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Reactor Pool Mixing

  • Spent Fuel Pool Cooling System

- 2x 1250 gpm pump & heat exchanger trains

  • Reactor Pool Cooling System

- 3x 1250 gpm pump & heat exchanger trains

  • Combined minimum operating flow (1 SFPCS / 1 RPCS)

- 3.6 Million gallons/ day (-7 Million gallon pool)

  • Sample points on discharge of RPCS, SFPCS, and PCUS
  • Conductivity monitors on outlet of RPCS, SFPCS, and PCUS

- Conductivity mismatch between systems could indicate a difference in boron concentration between pools 15 PM-0319-64807 Revision: 0 Copyright 2019 by NuScale Power, LLC.

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Reactor Pool Mixing X = SAMPLING PO INT

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Reactor Pool Mixing

- SR 3.1 .1 .1 (will use samples from RPCS to verify pool boron concentration) '

  • Every 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />

- SR 3.5.3.3

  • Every 31 Days
  • And within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> after each solution volume increase of> 15,000 gal 17 PM-0319-64807 Revision: 0 Copyright 2019 by NuScale Power, LLC.

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Acronyms

  • ANSI -American National Standards Institute
  • NPM - NuScale Power Module
  • ASME - American Society of Mechanical
  • PCS - Plant Control System Engineers
  • QAPD - Quality Assurance Program Description
  • aux - Auxiliary
  • PCUS- Pool Cleanup System
  • CNV - Containment Vessel
  • RBC - Reactor Building Crane
  • DCA - Design Certification Application
  • RFT- Refueling Tool
  • E-Stop - Emergency Stop
  • RG - Regulatory Guide
  • FHM - Fuel Handling Machine
  • RPCS - Reactor Pool Cooling System
  • ft- feet
  • gpm - gallons per minute
  • RXB - Reactor Building
  • l&C - Instrument and Control
  • SFPCS - Spent Fuel Pool Cooling System
  • ITAAC - Inspections, Tests, Analyses, and Acceptance Criteria
  • SIL- Software Integrity Level
  • MCS - Module Control System
  • SR - Surveillance Requirement
  • min - minute
  • SRP - Standard Review Plan
  • MLA - Module Lifting Adapter *
  • TS - Technical Specification

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Portland Office Richland Office 6650 SW Redwood Lane, 1933 Jadwin Ave., Suite 130 Suite 210 Richland, WA 99354 Porlland, OR 97224 541.360.0500 971.371.1592 Arlington Office Corvallis Office 2300 Clarendon Blvd., Suite 1110 1100 NE Circle Blvd., Suite 200 Arlington, VA 22201 Corvallis, OR 97330 541.360.0500 London Office 1st Floor Porlland House Rockville Office Bressenden Place 11333 Woodglen Ave., Suite 205 London SW1 E 5BH Rockville, MD 20852 United Kingdom 301. 770.0472 +44 (0) 2079 321700 Charlotte Office 2815 Coliseum Centre Drive, Suite 230 Charlotte, NC 28217 980.349.4804 http://www. nuscalepower. com

~ Twitter: @NuScale_Power NUSCALE' Power for all humankind 19 PM-0319-64807 Revision: 0 Copyright 2019 by NuScale Power, LLC.

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