ML23171A004

International, NRC Meeting: Human Factors Engineering

ML23171A004
Person / Time
Site:	99902049
Issue date:	06/20/2023
From:	Bernie White Holtec, SMR
To:	Office of Nuclear Reactor Regulation
Shared Package
ML23171A001	List: ML23171A002 ML23171A004 ML23171A005
References
160-USNRC-048
Download: ML23171A004 (1)

Text

NRC Meeting:

Human Factors Engineering HOLTEC INTERNATIONAL Date: 20 June 2023 Presented By: Bob White SMR, LLC, A Holtec lnternatio~al Company Krishna P. Singh Technology C~mpus One Holtec Boulevard Camden,NJ08104,USA

[Not Export Controlled]

Meeting Agenda

Introductions

Purpose & Outcome Overview of HFE Program OER Summary FRA/FA Summary TA Summary S&Q Summary Simulator Configuration Control Open Forum O LTEC 11\\Jl EK NA T I O NA L

Introductions

NRC Staff Holtec Staff O L TEC INTERN A TI ONAL

Purpose and Outcome Purpose To provide a high-level overview of the SMR-160 Human Factors Engineering (HFE) milestones and discuss the HFE lmplementatio Plans.

Outcome To obtain feedback from the NRC staff on the HFE implementatio plans and examples of OER, FRA/FA and TA elements.

0 L T EC EK NA TI O NA L

Overvie\\N of HFE Program O LT EC El< NA fl O NA L The Human Factors Engineering (HFE) program is being implemented according to NUREG-0711 and related regulatpry requirements.

The first element is the Program Plan which is HOLTEC procedure HPP-160-1014.

The schedule is proprietary and will be discussed during th closed session.

Overvie\\N of HFE Program ( cont'd)

This procedure contains 11 Appendices - one for each of th other elements of the HFE program.

0 L TEC I I\\J T t K N A l I O N,\\ L Each Appendix represents the Implementation Plan for one lof the HFE program elements.

Question: How do we submit the Implementation Plans (procedure HPP-160-1014) for NRC review and feedback?

HFE Schedule

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O L TEC ll}lTERNAl I ON,\\L

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HFE Issues Tracking OLTEC 1/N l El< NA l I O NA L HFE issues are identified and tracked in the HFE Issue Trackirg System (HITS), which is a web-based database. HFE issues include:

known industry issues (typically identified in the OER) issues identified in one of the HFE program elements human engineering discrepancies (HED) identified during the HFE design (typically during the V&V process) issues identified during HSI design issues identified via simulator modeling

OER Scope The OER scope includes reviews of the following inputs:

predecessor and related plants and systems recognized industry HFE issues related HSI technology issues identified by plant personnel important human actions (IHAs)

OLTEC I i!,11 E K N A T I O N,\\ L

OER Screening and Prioritization OE is reviewed by a team to screen according to the followi Consider Each OE Issue Identified Relevant to the ~

SMR-160 Design No Linked to safety ~

Yes or production ?

Priority 1 (High)

Must be addressed Priority 2 (Medium)

Consider addressing and document Priority 3 (Low)

Does not need to be addressed other than documenting in the report.

OLTEC lliJl El{NA TI ON,\\L g:

OER Priorities The three priorities are defined as:

0 L TEC l r!J l ER NA I I ONA L Priority 1 issues are high priority and need to be addressed. Tr ese must have a documented way it is addressed. If it has not been addressed yet, it must be in the HITS database with a high pri, rity.

Priority 2 issues are moderate priority and should be assessed to determine if they should be addressed. If the issue has not been addressed yet, it should be in the HITS Database.

Priority 3 issues are low priority and normally not considered.

These issues are documented in the OER report but not entered into the HITS Database.

OER Documentation The OER report includes:

[.RN~Jo~f The sources of information and methodology used to perform! the OER Description of how the OER was conducted A list of the GER-identified issues that have been or will be incorporated including any open issues from the HITS

FRA/FA O LT EC 11\\./'I El< NA T I ON,\\ L The Functional Requirements Analysis and Function Allocatip n (FRA/FA) defines the plant's high-level functions of safety a111d power production and allocates the actions to human and system resources:

Establish a description of the plant functions that are required to operate the plant Establish the inter-relationships between plant functions Describe the allocation assignment of functions Assess the adequacy of functions against operational and hurman needs

FRA/FA Process

-, ~ ~TRN~Jo~f Step 1: Plant Function Identification and Decomposition is performed for overall plant design to identify all the plant functions required to accomplish plant goals.

Step 2: Functional Requirements Analysis is done for each ~igh-level function associated with the system, the requirements are identified, and the results are captured in the Function Description Form.

Step 3: Function Allocation divides the system functions identified in the previous steps into actions, evaluated, and allocated as automatic, manual, or shared control.

FRA/FA Plant Function Identification example Goals 1.0 Ensure Safety High-Level Functions 1.3 RCS Integrity 1.4 Containment Integrity Processes 1--.._---i 1.3.1 Reactor Coolant Pressure Boundary Isolation 1.4.1 Containment Isolation 1.4.2 Containment Pressure and Temperature Control 1.4.3 Limit Concentration of Combustible Gas Systems

.-----.1 1.3.1.CVCS -Chemical and Volume Control System

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I 1.3.1.RHR - Residual Heat Removal System

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1.3.1.RCS - Reactor Coolant System

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1.3.1.MSS-Main Steam System 1--'-------~ l.4.l.CISO - Containment Isolation System*

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1.4.2.PCHR-Passive Containment Heat Removal System

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1.4.2.CBV-Containment Ventilation System 1-....... ------~ 1.4.3.CGCS-Combustible Gas Control System OLTEC lli,il LKN A l I O N,\\ L System Functions 1.3.1.CVCS.F00l - Reactdr Coolant Pressure Boundary Isolation Valv~ Actuation 1.3.l.CVCS.F002-Press~rizer Level 1----~---~ l.3.l.R HR.FOOl-RHR lsqlation Valve Actuat ion 1.3.1.R HR.F002-Low Te(nperature Overpressure Protectio 1--------11 1.3.1.RCS.F00l-Pressurizer Pressure l.3.l.RCS.F002-Overpr~ssure Protection 1--------11~ 1.3.1.MSS.FOOl-Overprl?ssure Protection 1---.....1.----11~ 1.4.1.CISO.F00l-Contaipment Isolation Valves Actuation*

1.4.2.PCHR.F00l-Maint8in Containment 1----+-----~ Press ure and Temperat~re 1----+--~ 1.4.2.CBV.F00l-Maintain Containment Press ure and Temp_e_ra_t.._t r_e ______ _

1.4.3.CGCS.FOOl-Monitf>ring and Mitigation of Combustible Gas

0 L T E C TA Process I N TtK N A TI O NA L The Task Analysis (TA) takes Human Actions (HA) identified i1n the FRA/FA and other HFE program elements and further analyzes them to identify the tasks that personnel must perform to accomplish the HA.

Task analysis encompasses a range of plant operating conditions, including startup, normal operations, abnormal operations, transient conditions, low power, shutdown, and refueling conditions.

TA Process (cont'd)

The task analysis includes four major steps:

OLTEC I IN I EK NA l I ONA L

1) Identify and Define Tasks - gathers the HAs to be analyzed an1 defines tasks that encompass all the HAs.

2) Develop Task Descriptions - develops task descriptions, whic include attributes about the task

3) Analyze Tasks - refines the Task Descriptions to include enough detail to allow requirements to be developed

4) Identify Requirements - identifies task requirements such as:

information, controls, alarms or other support needed to perform the task; K&A required; workload estimates; and constraints

0 L T EC TA Process (cont'd)

,. E I< N A f I O N 1\\ L Each task contains 3 elements:

1) Task Description Form documenting the HAs and task attribu1es

2) Task Analysis identifying specific tasks, subtasks and actions to perform the function containing HAs

3) Operational Sequence Diagram (OSD) to graphically shows th relationship between personnel and automated actions

S&Q RfOL TEC l i T~K NA T I ON r\\ l The Staffing & Qualification (S&Q) is applicable licensed operators as defined in 10CFRSS or optimized for SMR-160.

The SMR-160 intends to seek an exemption to the staffing guidante in 10 CFR 50.54(m) based on results of the HFE V&V and validation testing of the staffing plan. Currently no operator actions are credlited for DBAs with a digital control system containing defense-in-dept monitoring, tiered alarm system and computerized procedures.

Question: How is the workload scenario(s) for the unaffected unit determined?

OER, FRA/FA, TA examples Some OERs have been prioritized with examples for each priority ( 1, 2, and 3).

The initial FRA/FA for major systems are complete.

Some TAs for completed FRA/FAs have been prepared.

Question: How do we submit examples of completed OERs, FRA/FAs and TAs for NRC review and feedback?

O LTE C iit,1 1 ERN A T I O NA L

TAV&V Once the desktop simulator is ready, the HFE Verification &

Validation (V&V) will begin.

The HFE V&V will be used as part of the plant referenced simulator (PRS) testing and qualification.

HOLTEC will use qualified Subject Matter Experts (SM Es) for simulator testing, including HFE V&V.

OLTEC EKN A fl O NA L

Simulator Testing per ANSI/ ANS-3.5 e,~N~T

,~

ANSI/ANS-3.5-2018 will be used to perform simulator testin_.

Section 5.1 provides details for initial construction.

Question: Reg Guide 1.149 endorses the 2009 version, can we use the 2018 version?

Question: Section 5.1 implies that an SME can verify the simulator configuration. What training documentation is required for an SME?

Si111ulator Configuration Control OLTEC I IN TEK NA TI ON,\\ L HOLTEC will have a configuration control program in place t~

track plant (design) and simulator changes following declarJtion of a PRS.

Question: Will the NRC want to see a configuration control program during simulator development? How about after Hf FE V&V but prior to declaring a PRS?

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