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LLC - Submittal of Human Factors Engineering Task Analysis Results Summary Report, RP-0316-17616 Revision 2. (Non-Proprietary Version)
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L0-0219-64509 April 29, 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 "Human Factors Engineering Task Analysis Results Summary Report," RP-0316-17616 , Revision 2

REFERENCE:

Letter from NuScale Power, LLC to U.S. Nuclear Regulatory Commission , "NuScale Power, LLC Submittal of First Set of Human Factors Engineering Documentation for Design Certification Application ," Dated December 29, 2016 (ML17004A222)

NuScale Power, LLC (NuScale) submitted Revision O of the Human Factors Engineering Task Analysis Results Summary Report, RP-0316-17616 , to the NRC (Reference). The purpose of this letter is to submit Revision 2 of the Human Factors Engineering Task Analysis Results Summary Report to the NRC. Revision 1 of the Human Factors Engineering Task Analysis Results Summary Report was not submitted to the NRC. contains the proprietary version of the report entitled "Human Factors Engineering Task Analysis Results Summary Report," RP-0316-17616 , Revision 2. NuScale requests that the proprietary version be withheld from public disclosure in accordance with the requirements of 10 CFR § 2.390. The enclosed affidavit (Enclosure 3) supports this request. Enclosure 1 has also been determined to contain Export Controlled Information. This information must be protected from disclosure per the requirements of 10 CFR § 810. Enclosure 2 contains the nonproprietary version of the report entitled "Human Factors Engineering Task Analysis Results Summary Report," RP-0316-17616, Revision 2.

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

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

Sincerely, Distribution: Gregory Cranston , NRC, OWFN-8H 12 Samuel Lee, NRC , OWFN-8H12 Prosanta Chowdhury, NRC, OWFN-8H12 : "Human Factors Engineering Task Analysis Results Summary Report," RP-0316-17616-P, Revision 2, proprietary version : "Human Factors Engineering Task Analysis Results Summary Report," RP-0316-17616-NP, Revision 2, nonproprietary version : Affidavit of Thomas A. Bergman , AF-0219-54510 NuScale Power, LLC 1100 NE Circle Blvd , Suite 200 Corvallis, Oregon 97330 Office 541.360-0500 Fax 541.207.3928 www.nuscalepower.com

LO-0219-64509 :

Human Factors Engineering Task Analysis Results Summary Report, RP-0316-17616-P, Revision 2, proprietary version NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360-0500 Fax 541.207.3928 www.nuscalepower.com

LO-0219-64509 :

Human Factors Engineering Task Analysis Results Summary Report, RP-0316-17616-NP, Revision 2, nonproprietary version NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360-0500 Fax 541.207.3928 www.nuscalepower.com

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 Human Factors Engineering Task Analysis Results Summary Report April 2019 Revision 2 Docket: 52-048 NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 www.nuscalepower.com

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 COPYRIGHT NOTICE This report has been prepared by NuScale Power, LLC and bears a NuScale Power, LLC, copyright notice. No right to disclose, use, or copy any of the information in this report, other than by the U.S.

Nuclear Regulatory Commission (NRC), is authorized without the express, written permission of NuScale Power, LLC.

The NRC is permitted to make the number of copies of the information contained in this report that is necessary for its internal use in connection with generic and plant-specific reviews and approvals, as well as the issuance, denial, amendment, transfer, renewal, modification, suspension, revocation, or violation of a license, permit, order, or regulation subject to the requirements of 10 CFR 2.390 regarding restrictions on public disclosure to the extent such information has been identified as proprietary by NuScale Power, LLC, copyright protection notwithstanding. Regarding nonproprietary versions of these reports, the NRC is permitted to make the number of copies necessary for public viewing in appropriate docket files in public document rooms in Washington, DC, and elsewhere as may be required by NRC regulations. Copies made by the NRC must include this copyright notice and contain the proprietary marking if the original was identified as proprietary.

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 Department of Energy Acknowledgement and Disclaimer This material is based upon work supported by the Department of Energy under Award Number DE-NE0008820.

This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 CONTENTS Abstract ....................................................................................................................................... 1 Executive Summary .................................................................................................................... 2 1.0 Introduction ..................................................................................................................... 3 1.1 Purpose ................................................................................................................. 3 1.2 Scope .................................................................................................................... 3 1.3 Abbreviations and Definitions ................................................................................ 4 2.0 Implementation ................................................................................................................ 6 2.1 Task Analysis Process Overview ........................................................................... 6 2.2 Task Analysis Team Composition and Responsibilities ......................................... 8 3.0 Methodology .................................................................................................................. 10 3.1 Task Analysis Development ................................................................................. 10 3.2 Task Identification ................................................................................................ 13 3.3 Task Determination Methodology ........................................................................ 13 3.3.1 Normal, Abnormal, Emergency, and Alarm Response Procedure Tasks ............. 13 3.3.2 Surveillance, Test, Inspection, and Maintenance Procedure Tasks ..................... 14 3.3.3 Tasks with Potentially Negative Consequences (Not Identified as Important Human Actions) ................................................................................... 14 3.4 Operational Sequence Diagrams ........................................................................ 15 3.5 Detailed Task Narratives...................................................................................... 16 3.5.1 Time Required for Performing Tasks ................................................................... 17 3.5.2 Personnel Required for Performing Tasks ........................................................... 18 3.5.3 Task Support Requirements ................................................................................ 18 3.5.4 Task Considerations ............................................................................................ 19 3.5.5 Inventory of Alarms, Controls, and Displays ........................................................ 21 3.5.6 Knowledge and Abilities Identification ................................................................. 21 3.6 Iterative Nature of Task Analysis ......................................................................... 22 3.6.1 Functional Requirements Analysis and Function Allocation and Task Analysis Database ............................................................................................... 22 3.6.2 New Task Criteria ................................................................................................ 23 3.7 Analysis of Feasibility and Reliability for Important Human Actions .................... 23 4.0 Summary of Results ..................................................................................................... 25

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 4.1 System Task Analysis Results ............................................................................. 25 4.1.1 Human-System Interface Inventory Development ............................................... 28 4.1.2 System Tasks Determined by Function ............................................................... 32 4.1.3 Alarm Response Task Determination Results ..................................................... 33 4.1.4 Surveillance Task Determination Results ............................................................ 34 4.1.5 Operational Sequence Diagram Results ............................................................. 35 4.2 Plant Task Analysis Results ................................................................................. 37 4.2.1 Miscellaneous Events and Evolutions ................................................................. 38 4.2.2 Anticipated Operational Occurrences .................................................................. 39 4.2.3 Infrequent Events ................................................................................................ 40 4.2.4 Accidents ............................................................................................................. 41 4.2.5 Special Events (SE) ............................................................................................ 43 4.2.6 Emergency Operating Procedures ...................................................................... 44 4.3 Task Support ....................................................................................................... 44 4.3.1 Task Attributes ..................................................................................................... 44 4.3.2 Personnel Task Designation ................................................................................ 46 4.3.3 New Task Results ................................................................................................ 48 4.4 Knowledges and Abilities ..................................................................................... 50 4.5 Important Human Action Results ......................................................................... 52 5.0 Analysis Conclusions ................................................................................................... 54 6.0 References ..................................................................................................................... 55 6.1 Source Documents .............................................................................................. 55 6.2 Referenced Documents ....................................................................................... 55

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 TABLES Table 1-1. Abbreviations ......................................................................................................... 4 Table 1-2. Definitions .............................................................................................................. 5 Table 3-1. Task considerations ............................................................................................. 20 Table 3-2. VISION icon descriptions .................................................................................. 23 FIGURES Figure 2-1. Database structure ................................................................................................ 8 Figure 3-1. Task analysis flow path ........................................................................................ 12 Figure 3-2. Operational sequence diagram task decomposition example ............................. 16 Figure 4-1. Sample of CVCS master task list ........................................................................ 26 Figure 4-2. Sample of DHRS master task list ........................................................................ 27 Figure 4-3. Sample of ECCS master task list ........................................................................ 28 Figure 4-4. Hierarchy example of component-to-task relationship within the database ........ 29 Figure 4-5. Hierarchy example of instrumentation (and display) ........................................... 30 Figure 4-6. Hierarchy example of alarms to task relationship within the database ................ 31 Figure 4-7. Hierarchy example of controls ............................................................................. 32 Figure 4-8. Task examples for function of Purify the reactor coolant................................... 32 Figure 4-9. Alarm response hierarchy for CVCS ................................................................... 33 Figure 4-10. Example of CVCS alarm response procedure..................................................... 34 Figure 4-11. Surveillance hierarchy ......................................................................................... 35 Figure 4-12. CVCS operational sequence diagram for inadvertent boron dilution................... 36 Figure 4-13. ECCS operational sequence diagram for ECCS initiation ................................... 37 Figure 4-14. Miscellaneous events and evolution task examples ............................................ 38 Figure 4-15. Anticipated operational occurrences task examples ........................................... 40 Figure 4-16. Infrequent event examples .................................................................................. 41 Figure 4-17. Accident task examples ....................................................................................... 42 Figure 4-18. Special event task examples ............................................................................... 43 Figure 4-19. Emergency operating task examples .................................................................. 44 Figure 4-20. Task attribute cross reference example ............................................................... 45 Figure 4-21. Job position task examples for reactor operator 2/3 for CVCS ........................... 47 Figure 4-22. Job position determination for reactor operator 1 for ECCS................................ 48 Figure 4-23. Sample of new tasks for CVCS ........................................................................... 49 Figure 4-24. Example of CVCS skills and knowledges categories .......................................... 50 Figure 4-25. CVC component knowledge and ability example ................................................ 51 Figure 4-26. Important human action task and element example 1 ......................................... 52 Figure 4-27. Important human action task and element example 2 ......................................... 53

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 Abstract The task analysis (TA) is a significant element of the human factors engineering (HFE) program.

The purpose of the task analysis is to analyze human actions that are allocated to personnel during the function allocation (FA) process.

The functions allocated to plant personnel define the roles and responsibilities that can be accomplished via human actions or tasks. The results of the task analysis provide inputs to the following HFE activities; staffing and qualifications; human-system interface (HSI) design, procedure development, training program development, treatment of important human actions (TIHA) and task support verification (human factors verification and validation).

This results summary report (RSR) documents the methodology used in the TA process and the results of the analyses. The process used is consistent with the applicable provisions of Section 5 of NUREG-0711.

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 Executive Summary Consistent with the guidance of NUREG-0711 Section 5, the scope of the TA performed by NuScale includes a method to identify the specific tasks, personnel required to perform tasks, and identify alarms, displays, controls and task support needed to perform those tasks.

Functions allocated to human and system resources are determined during the function allocation process and made into tasks. The tasks are arranged into specific job categories and assigned to staff positions (e.g., licensed and non-licensed operators). The alarms, displays, controls and task support needed are design inputs for developing staffing and qualifications, HSI design, procedure development, training program development, TIHA and task support verification (human factors verification and validation).

This report is organized into six major sections and appendices. Section 1.0 describes the purpose and scope of the TA. Section 2.0 provides an overview of the TA implementation process and a description of the TA team composition and responsibilities. Section 3.0 describes the methodology and specifies the criteria for performing the task analysis. Section 4.0 and the appendices provide detailed examples of the results of the TA for the chemical and volume control system (CVCS), the decay heat removal system (DHRS), and the emergency core cooling system (ECCS). Section 5.0 provides a high-level conclusion derived from the TA activities. The source and referenced documents applicable to and used in the TA effort are listed in Section 6.0.

TA results for the remaining NuScale systems (other than the TA results for the three systems reported in Section 4.0) are available in the functional requirements analysis/function allocation (FRA/FA) & TA database.

This report supersedes RP-0914-8537, Human Factors Engineering Task Analysis Implementation Plan, in its entirety.

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 1.0 Introduction 1.1 Purpose This results summary report (RSR) provides a summary of the results of the TA for the NuScale Power plant as part of the human factors engineering (HFE) program. This report also includes the methodology used to achieve the results. The inputs from the other HFE program elements are described, and the outputs from the TA elements are identified.

1.2 Scope This RSR is focused on TA for activities performed by licensed operators in the main control room (MCR) during normal, abnormal, and emergency operating conditions.

Maintenance or refueling activities, activities completed by craft and technical personnel (i.e., mechanical, electrical, or instrumentation and control (I&C) maintenance; health physics; chemistry; engineering; or information technology), or activities associated with the technical support center, remote shutdown system, emergency operations facility, operations support center, or any other emergency response facilities are not included in the TA focus unless those activities are determined to impact licensed operator workload.

The tasks selected for analysis represent a range of plant operating modes, including startup, normal operations, low-power and shutdown conditions, transient conditions, abnormal conditions, emergency conditions, and severe accident conditions. The methodology for selection of the tasks is described in Section 3.2.

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 1.3 Abbreviations and Definitions Table 1-1. Abbreviations Term Definition AOO anticipated operational occurrences CFDS containment flooding and drain system CVCS chemical and volume control system D3CA diversity and defense-in-depth coping analysis DHRS decay heat removal system ECCS emergency core cooling system FA function allocation FRA/FA functional requirements analysis and function allocation HED human engineering discrepancy HFE human factors engineering HFEITS human factors engineering issue tracking system HSI human-system interface I&C instrumentation and controls IHA important human action KA knowledge and abilities MCR main control room OER operating experience review OJE on-the-job evaluation OJT on-the-job training OSD operational sequence diagram PMP program management plan PRA probabilistic risk assessment RSR results summary report SE special event SK skills and knowledge SME subject matter expert S&Q staffing and qualifications

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 TA task analysis TAA transient and accident analysis TIHA treatment of important human actions V&V verification and validation Table 1-2. Definitions Term Definition Element A discrete human action executed to support a task.

The identification of functions that must be performed to satisfy the FRA/FA nuclear power plants overall goals. Function allocation determines which tasks are manual, automatic, or a combination of the two.

The VISION Developer application is a relational database that is used to store the FRA/FA, task analysis, staffing and qualifications FRA/FA & TA database analysis, development of human-system interfaces (HSI), procedures, and training data. In this document it is also referred to as the FRA/FA

& TA database or database.

The plant functions describe how the plant meets NuScales mission Plant functions statement of safe, scalable, affordable, electrical generation using nuclear power.

An individual with appropriate knowledge in a specific area or SME discipline that has sufficient experience and education to competently develop or review a licensing topical report in that discipline.

A group of activities with a common purpose, often undertaken in Task close temporal proximity.

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 2.0 Implementation 2.1 Task Analysis Process Overview The purpose of TA is to systematically determine the requirements for information, control, and task support. The TA results establish HSI inventory requirements, including alarms, controls, displays, procedures, and training programs to support accomplishment of tasks. TA encompasses a range of plant operating conditions, including startup, normal operations, low-power and shutdown conditions, transient conditions, abnormal conditions, emergency conditions, and severe accident conditions.

Input to TA from HFE program elements include the following:

Tasks identified in the operating experience review (OER) as human performance issues are evaluated for similarity with tasks identified for the plant. The TA confirms that the human performance issues are resolved by the plant design or HSI. The TA also resolves any task-related human engineering issues identified during OER.

Human actions, as determined in functional requirements analysis and FRA/FA process (Reference 6.2.2), are decomposed during TA to identify control tasks and related monitoring tasks. Actions allocated to a machine (automation) are decomposed to identify tasks for monitoring, and TA confirms the allocations.

Important human actions (IHAs) identified by the probabilistic risk assessment (PRA), transient and accident analysis (TAA), and diversity and defense-in-depth coping analyses (D3CA) are analyzed for feasibility and reliability in the TA. Time constraints on IHAs are analyzed to allow for performance-shaping factors and necessary added time margins for completion of the task.

Output from TA to other HFE program elements includes the following:

The HSI inventory and its characteristics generated by the TA include the alarms, controls, displays, and procedures needed to monitor plant-critical functions, and to monitor and control their success paths. The HSI design uses the detailed TA results and inventory of alarms, controls, and displays to establish alarm logic, display and control designs, procedure step acceptance criteria, and grouping of HSI inventory, especially for task-oriented screens. Staffing assumptions related to roles and responsibilities of operators and crew size are developed for the concept of operations portion of HSI design.

Tasks are arranged into specific job categories and assigned to staff positions (e.g.,

licensed operators, non-licensed operators). This provides input to the control room staffing plan validation operator training (Reference 6.2.3) and is analyzed in the staffing and qualifications (S&Q) HFE element.

Tasks are assigned knowledge and abilities (KA) required to perform the tasks.

These KA requirements provide the foundation for the operator training program development.

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 The TA information is captured in the FRA/FA & TA database. This is the same database that contains the FRA/FA information and is described in further detail in Section 3.6.1.

The database is divided into three hierarchies: analysis, objective design, and program development.

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                    }}2(a),(c)

Figure 2-1. Database structure 2.2 Task Analysis Team Composition and Responsibilities TA is conducted and supported by an experienced team that includes input from the HFE team and from the system engineering, safety analysis, and operations organizations. The qualifications of the HFE team members are as stipulated in the NuScale HFE program management plan (PMP) (Reference 6.2.1). The TA team lead and the remainder of the team are selected by the HFE supervisor from the HFE team members. As described in the HFE PMP, the HFE supervisor has the authority and organizational placement to reasonably ensure that the tasks assigned to the TA personnel who do not directly report to the supervisor are completed. The TA team includes a FRA/FA & TA database coordinator. Assigned by the team lead, the database coordinator is responsible for managing the information that is recorded in the FRA/FA & TA database. The TA team includes several senior reactor operators and other personnel with significant experience in the operation of commercial nuclear power plants. © Copyright 2019 by NuScale Power, LLC 8

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 A TA team and TA team lead are selected by the HFE supervisor from available HFE team members to conduct TA. The TA team lead is responsible for:

organizing the TA team
directing the development of the FRA/FA & TA database
assigning team member responsibilities
managing resources and review schedule
ensuring that TA issues are completed with supporting documentation and entered into human factors engineering issue tracking system (HFEITS) as necessary
production of the FRA/FA & TA database reports Responsibilities of TA team members conducting the reviews and disposition the individual review items include
reviewing TA documentation for identification of accuracy of the functional requirements analysis.

task determination.

reviewing the database and using reports to cross examine the results
continuing revisions to the data as necessary.

The FRA/ FA and TA database administrator is responsible for the following:

ensuring the data is properly entered in the database
formatting/running reports to provide output from the database The HFE team is responsible for supporting the task analysis. The qualifications of the HFE team members supporting this HFE program element are stipulated in the current NuScale HFE PMP (Reference 6.2.1). The FRA/FA & TA database coordinator manages the information that is put into the FRA/FA & TA database.

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 3.0 Methodology The HFE program includes TA as part of a series of analyses that relies primarily on design documents, subject matter experts (SME), and operating experience. TA is a resource for S&Q, development of HSI, procedures, and training program. For efficiency, the team conducts the FRA/FA and TA in sequence or in parallel, depending on the complexity of the functions and associated tasks. Where functions and tasks are not complex, have low safety significance, or are not expected to vary significantly from how other commercial nuclear power plants conduct them, the FRA, FA, and TA sequence may extend further to include preliminary development of HSI, procedures, and training. The TA methodology remains the same whether conducted alone or as the first step in a series. Rigid sequencing is not practical for HFE analyses as the iterative nature of both the design and the HFE process necessitates significant flexibility. For example, new or modified tasks in the task analysis would require updating the function allocation table; conversely, changes to the function allocation table are reflected in the task analysis. Those changes are made or the necessary changes become HFE issues and are tracked using HFEITS. 3.1 Task Analysis Development The step sequence for TA development (refer to Figure 3-1) is as follows:

1. Identify tasks

2. Develop detailed task narrative

3. Decompose tasks

4. Develop operational sequence diagram

5. Verify IHAs

6. Identify task attributes

7. Identify high workload tasks

8. Identify task job position

9. Determine KAs

10. Define task support requirements

11. Identify performance shaping factors (assess workload)

12. Determine inventory of components, alarms, displays, and controls to support accomplishment of tasks

13. Output to HSI usability testing, control room staffing plan validation, procedures, and training

14. Modified tasks or new tasks are reviewed for TA development

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 Note that not all steps are conducted for each task. TA is iterative and higher levels of analysis are conducted as the plant design progresses. Also, as noted below, more complex tasks result in more detailed task narratives and involve more aspects of the overall TA. TA steps may be omitted or conducted out of sequence during some iteration. The overall TA process is shown in Figure 3-1. © Copyright 2019 by NuScale Power, LLC 11

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                             }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 3.2 Task Identification Tasks to be analyzed represent a range of plant operating modes, including startup, normal operations, low-power and shutdown conditions, transient conditions, abnormal conditions, emergency conditions, and severe accident conditions. All tasks, regardless of the importance, are analyzed so that the full extent of the work load can be determined. Examples of tasks to be analyzed include, but are not limited to, the following:

IHAs determined through the human reliability portion of the PRA and deterministic means (e.g., TAA, D3CA). TA for IHAs assumes use of the alarms, controls, displays, automation, and procedures that are normally available and operable during the scenario being analyzed.
tasks not identified as IHAs through probabilistic or deterministic means but which have negative consequences if performed incorrectly.
tasks that are identified to be new, compared to currently operating nuclear plants.
tasks that, while not new, are performed significantly differently from the currently operating nuclear plants.
tasks related to monitoring and control of automated systems that are important to plant safety and the use of automated support aids for personnel, such as computer-based procedure.
tasks related to identifying the failure or degradation of automation, and implementing backup responses.
tasks anticipated to impose high demands on personnel (e.g., administrative tasks that contribute to workload and challenge ability to monitor the plant).
tasks important to plant safety that are undertaken during maintenance, tests, inspections, and surveillances.
tasks with potential concerns for personnel safety Identification of tasks to be analyzed is performed by SMEs on the basis of their experience at current operating nuclear plants. The process typically includes review of operating experience and available system design material.

3.3 Task Determination Methodology 3.3.1 Normal, Abnormal, Emergency, and Alarm Response Procedure Tasks All tasks are analyzed for normal, abnormal, and emergency response operating procedures. Tasks based on use of operating procedures are analyzed in greater detail in later iterations as the plant design progresses. Personnel performing the analyses include former operators of commercial U.S. nuclear power plants and other SMEs. Procedures are not available for initial TA; therefore, the tasks analyzed are based on © Copyright 2019 by NuScale Power, LLC 13

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 procedures from similar systems and processes (see Section 4.1.2, 4.1.3, and Section 4.1.5 examples). 3.3.2 Surveillance, Test, Inspection, and Maintenance Procedure Tasks Tasks related to surveillance, test, inspection, and maintenance procedures in the main control room (MCR) performed by the control room staff are identified. Human errors during the performance of surveillance, test, inspection, and maintenance procedures may result in components being in a state that induces a plant transient or triggers a precursor to a plant transient. In both cases, the surveillance, test, inspection, and maintenance actions are selected for task analysis to identify defenses against these errors. The process is iterative in nature and is kept current over the plants life cycle, from design development through decommissioning. Safety-related surveillance, test, inspection, and maintenance tasks are identified. The SME reviews the design material available, including system design packages, piping and instrument diagrams (P&IDs), logic diagrams, and electrical schematics for each system the task involves, and determines the tasks necessary to perform the surveillance, test, inspection, and maintenance functions of the system. Surveillance, test, inspection, and maintenance activities that by SME judgment have challenged operating crews at current commercial U.S. operating nuclear plants, or which potentially impact the ability of a NuScale plant operating crew to manage up to twelve units in one control room, are selected for TA. The SME documents the safety-related surveillance, test, inspection, and maintenance activities for each system using the technical specifications as the basis. Systems are distributed among several SMEs for this selection process. 3.3.3 Tasks with Potentially Negative Consequences (Not Identified as Important Human Actions) Negative consequences are defined as any action, task, or condition that places personnel, equipment, or the plant in jeopardy. Examples include:

a condition requiring an unplanned down power
a condition requiring a reactor trip or initiation of emergency equipment
an emergency action level declaration
a condition that places the plant in an unplanned technical specification action statement entry that requires plant shutdown When selecting human actions that are not identified as IHAs but have potentially negative consequences (such as precursors to plant transients), SMEs review the OER, the PRA and use their own experience. Activities related to transients or PRA that by

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 SME judgment were caused by challenges to operating crews at current commercial U.S. operating nuclear plants or which potentially impact the ability of a NuScale plant operating crew to manage up to twelve units in one control room are selected for TA. The SME documents the basis for selecting these activities for TA. These tasks that have potentially negative consequences are considered; abnormal, emergency and annunciator response tasks and are covered in these procedures (see Section 4.1.5 examples). 3.4 Operational Sequence Diagrams An operational sequence diagram (OSD) is created for safety-related tasks and used to aid in evaluating the flow of information from the point where the operator first becomes involved with the system to the completion of the task. Information flow includes operator decisions, operator control activities, and the transmission of data. Operator actions are identified in a top-down sequential format. The objective is to show how the information flows between the operators and the HSI from the beginning to the end of the task. The sequencing of the tasks provides input for the plant operating procedures and defines the activities that plant personnel are trained to execute. The functional allocation and task description provide the objective and operating parameters for operator tasks. In order to identify the stimulus and response relationship for each lowest level task, each task is decomposed by identifying the parent task, subtasks, and task elements. Depending on their types and complexity, tasks may be performed sequentially, in parallel, or in any order. Tasks may also be conditional, may involve coordinated actions among crew members, or among crew members and local personnel. Figure 3-2 is a simplified OSD example for the decay heat removal system (DHRS) showing how the task Actuate DHR is decomposed into its tasks. The figure demonstrates the sequence and decision points the operator follows to verify DHRS is achieving the function of removing fuel bundle heat. The table at the bottom of the drawing identifies the tasks by number, which corresponds to the tasks in the drawing (see Section 4.1.5 examples). © Copyright 2019 by NuScale Power, LLC 15

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                     }}2(a),(c)

Figure 3-2. Operational sequence diagram task decomposition example 3.5 Detailed Task Narratives For tasks that are identified for TA, a detailed task narrative is written. The purpose of the narrative is to provide:

a description of the objectives of a specific system's operator tasks
an overview of the activities personnel are expected to accomplish to complete the task
a description of alarms, information, controls, and task support needed to accomplish the task
a basic outline of the procedure steps

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 Narrative descriptions of operator activities contain detail for an operator to correlate the described task to the results of the completed task analysis. The length of the narrative is commensurate with the complexity of the task it describes. Each task narrative includes:

title - assign a task title and identifier
alarms and cautions that are associated with the task or that aid in the completion of the task
parameters the operator must know or be able to locate during performance of the task and a means of knowing if actions taken to attain parameters are adequate (feedback)
decisions the operator must make in performing the task - the type of decision and how operator evaluates choices prior to reaching a decision
action(s) expected of the operator, accuracy requirements for the action(s), time available for the action(s), and ergonomic properties of the controls for completion of the action
communication needs for the operator and associated teammates and alternative communication methods
workload - the anticipated or measured cognitive and physical workload needed to complete the task
tools or equipment needed for the task, protective clothing, job aids, or procedures needed
workspace needed to perform the task and environmental conditions applicable for the task
situational - ways that situations affect the outcome of the task such as time pressure, extreme environments, and team staffing shortages
hazards - means for identification and mitigation of hazards for completion of the task The task narratives are captured in the task title, within the task attributes. Task narratives are revised as relationships between tasks are better defined. The order and sequence of all tasks selected for TA are crucial to understanding workload and communication needs (see Section 4.3 examples).

3.5.1 Time Required for Performing Tasks The time required to perform a task is a combination of cognitive processing time, physical movement time, and HSI response time (e.g., screen navigation, control operation, instrumentation and controls (I&C) platform processing, plant system response). Calculations of time required for task performance factor in decision making (which may or may not be part of cognitive processing depending on task complexity), © Copyright 2019 by NuScale Power, LLC 17

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 communications with the operations team, task support requirements, situational and performance-shaping factors, and workplace factors and hazards for each step of a task. Concerning IHAs, the analysis of time required is also based on a documented sequence of operator actions. The estimated time for operators to complete the credited action is sufficient to allow successful execution of applicable steps in the emergency operating procedure. Time estimates for individual task components (e.g., acknowledging an alarm, selecting a procedure, verifying that a valve is open, starting a pump), and the basis for the estimates are established through a method applicable to the HSI characteristics of digital computer-based I&C. The time available to perform the actions is based on analysis of the plant response to the anticipated operational occurrences, accidents, and infrequent and special events SEs), in accordance with NUREG-0711 (Section 4.3 examples). 3.5.2 Personnel Required for Performing Tasks The number of personnel required to perform each task is determined by the task narrative, complexity of the task, time required to perform the task, and the time available. The task narrative developed for basic TA includes such information as

job function(s)/title(s) of person(s) who performs task.
requirements for communication with other operations personnel while performing task.
how different levels of staffing affect the performance of a task.
task time estimate.

Where detailed TA determines that workload for any individual task or analyzed sequence of tasks is excessive, an HFE issue is entered in the HFEITS database. Designers then have options such as re-allocation of functions, changes to operator roles and responsibilities, changes to the number of operators, and changes to the HSI design to address the issue (see Section 4.3 examples). 3.5.3 Task Support Requirements Typically, task support requirements are defined during the early TA (see 1.1.1 examples). However, if not known, a later TA iteration captures such things as the following:

written job aids
reference material
calculation sheets
tools
equipment

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2

protective clothing
instrument range
instrument units
instrument resolution - typically 1 percent of the range, but SME may specify if other
instrument refresh/update rate - considering limitations of the I&C platform
instrument display characteristics
instrument trend required, Y/N
calculations to be automated, Y/N 3.5.4 Task Considerations Each task is evaluated to identify situational and performance-shaping factors that increase the cognitive workload and may influence human reliability. Examples include stress, reduced staffing, time pressure, and extreme environmental conditions. Table 3-1 shows how the HFE team compares the NUREG-0711 with the NuScale attributes (see Section 4.3 examples).

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 Table 3-1. Task considerations Topic Examples (NUREG-0711) Task Attribute (NuScale) Alerts alarms and warnings alarms and warnings (alerts) Information parameters (units, precision, and parameters (units, precision, and accuracy) accuracy) feedback needed to indicate adequacy of feedback needed to indicate adequacy of actions taken actions taken Decision-making decision type (relative, absolute, decision type (relative, absolute, probabilistic) evaluations to be performed probabilistic) evaluations to be performed Response actions to be taken actions to be taken (element steps) task frequency and required accuracy task frequency and required accuracy time available and temporal constraints time available (IHAs); task time (non-IHA) (task ordering) time constraints physical position (stand, sit, squat, etc.) physical position (stand, sit, etc.) biomechanics biomechanics force required movements (lift, push, turn, pull, crank, biomechanics description (turn, pull, etc.) etc.) forces needed Teamwork and coordination needed between the team coordination needed between the team Communication performing the work performing the work personnel communication for monitoring communication with other groups information or taking control actions communication reporting external communication Workload cognitive workload cognitive workload physical workload physical workload overlap of task requirements (serial vs. overlap of task requirements (procedure parallel task elements) development) task relationships and task type Task Support special and protective clothing special and personnel protective job aids, procedures or reference equipment materials needed procedures tools and equipment needed job aids job aid description procedures procedure description reference material reference material description tools, materials, and equipment needed Workplace Factors ingress and egress paths to the worksite ingress and egress paths to the worksite workspace needed to perform the task (work paths) typical environmental conditions (such as workspace needed to perform the task lighting, temp, noise) typical environmental conditions (such as lighting, temp, noise) Situational and stress stress Performance Shaping time pressure time pressure Factors extreme environmental conditions extreme environmental conditions reduced staffing staffing conditions Hazard Identification identification of hazards involved, e.g., hazards potential personal injury © Copyright 2019 by NuScale Power, LLC 20

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 3.5.5 Inventory of Alarms, Controls, and Displays ((

                                                  }}2(a),(c)

Note that the TA SME uses qualitative language to define alarm and control setpoints (e.g., high, low), but actual setpoint determination is made by the plant designers. 3.5.6 Knowledge and Abilities Identification In addition to the attributes included in the detailed task narrative, each task is analyzed to determine the KA needed for success of the task. The KA is used to complete other HFE activities such as the training program content and S&Q. The NuScale KAs are benchmarked against a modern pressurized water reactor using NUREG-2103, and a gap analysis is performed. The results of this analysis are used to develop the NuScale-specific KA catalog to address the unique characteristics of the NuScale Power plant design. © Copyright 2019 by NuScale Power, LLC 21

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 The results of this analysis are used to develop the NuScale-specific KA catalog written to specifically address the unique nature of the design (e.g., the design does not include reactor coolant pumps so the NuScale KA catalog contains no KAs related to operation of reactor coolant pumps, but does include KAs related to monitoring natural circulation of core flow (see Section 4.4). 3.6 Iterative Nature of Task Analysis The HFE program itself is iterative in that elements of the program are input to other elements and some design issues are only resolved by changing assumptions or re-analyzing based on new data. For example, applicable human engineering discrepancies (HEDs) initiated during OER and FRA/FA are resolved in TA, while TA output includes the following:

early definition of roles and responsibilities for individuals that are analyzed in S&Q for an overall operations team view
a list of HSI inventory and characteristics for HSI design
information and controls needed for task support that are used for procedure development
determination of required KA, which leads to learning objectives for training program development When problems arise during HFE program activities after TA, HEDs are initiated; resolution of those HEDs may result in changes to or re-work of the TA.

In addition, since TA is conducted for some plant systems before other system designs have commenced, system and component design changes may result in changes to systems previously designed. In these cases, TA input assumptions are likely to change. TA SMEs revise the TA as details of the plant, system, or component designs emerge. 3.6.1 Functional Requirements Analysis and Function Allocation and Task Analysis Database The VISION developer application is a relational database that is used to store the FRA/FA, task analysis, and staffing and qualification data. In this document it is also referred to as the FRA/FA & TA database, or database. The TA results of all NuScale systems are available in the database. Screen snapshots from the database are provided below. The letters and icons in the hierarchy used in the database are described in Table 3-2. The series of screen snapshots in this section are actual images from the database. The hierarchy is arranged in such a way to lay a foundation for training, task analysis, staffing and qualification, and HSI. The image inset in the database screenshot is an illustration of the cross-reference table in which the data is stored for each item in the hierarchy. The cross-reference tables allow for retrieval of the data in many different forms and allows for the data to be changed in one location and used for different outputs. © Copyright 2019 by NuScale Power, LLC 22

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 Table 3-2. VISION icon descriptions 3.6.2 New Task Criteria New tasks are developed if they are tasks for new systems compared to existing nuclear plants or tasks that, while not new, are performed significantly different from existing plants. Following is the NuScale criteria for determining if a task should be considered new:

the system is unique or modified significantly for NuScale or not commonly used in the commercial industry
any component or feature that is unique or modified significantly to NuScale or not commonly used in the commercial industry
any component or feature that has a high reliance on automation Tasks that are considered new to NuScale are linked to the New Task table in VISION 3.7 Analysis of Feasibility and Reliability for Important Human Actions The feasibility and reliability analysis for IHA addresses the following:
time available and time required to perform actions
use of techniques to minimize bias
sequence of actions
estimated time for operators to complete credited actions

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 Time available to perform actions is the length of time from the initiation of the task to the time the task needs to be completed as defined in the analysis, which identifies the IHA (e.g., PRA, D3CA, TAA). Applicable regulatory guidance is considered for the analyses that determine each IHA, and for any task which industry experience identifies as a potential IHA. The time available is based on plant response to the anticipated operational occurrence or accident. As discussed in Section 3.5.1, the time required to complete a task considers cognitive processing time, physical movement time, and HSI response time. The time-required calculation is based on an understanding of the sequence of operator actions and takes into account secondary tasks. Time-required estimates for IHAs are simulated and measured when feasible, or obtained through operator and expert interviews, software modeling of human behavior during tasks, and OERs. Analysis of the TIHA HFE element identified two IHAs. See the HFE TIHA RSR for more information (Reference 6.2.5). © Copyright 2019 by NuScale Power, LLC 24

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 4.0 Summary of Results The function allocations determined as part of the HFE element FRA and FA provide the foundation for TA. Detailed task analysis is the foundation for the development of operating procedures and the operator training program. Task analysis allows the HFE team member to identify tasks and distinguish between system tasks, plant-related tasks, alarm response tasks, and surveillance tasks. The process also assists the team member in determining the job position(s) responsible for the tasks, HSI inventory, and task attributes. ((

                                                    }}2(a),(c)

Three illustrative system examples are included in this report. The systems included are chemical and volume control system (CVCS), DHRS, and emergency core cooling system (ECCS). These examples were chosen since CVCS is a complicated system, has a safety related and risk significant function, and contains an important human action that, if it fails, would lead to the need to perform another IHA to unisolate and initiate containment injection via the containment flooding and drain system (CFDS). DHRS and ECCS are relatively simple systems but have safety-related and risk-significant functions. In addition to the TA results of the three example systems, the TA results of the remaining NuScale systems are also available in the database. 4.1 System Task Analysis Results As discussed in Section 3.0, tasks identified for analysis represent a range of operating modes for a 12-module plant, including startup, normal operations, low-power and shutdown conditions, transient conditions, abnormal conditions, emergency conditions, and severe accident conditions. Severe accident conditions include those that affect multiple units simultaneously. Evaluation of the PRA results identified two IHAs (Reference 6.2.5). Evaluation of the deterministic analysis results identified no IHAs (Reference 6.2.5). © Copyright 2019 by NuScale Power, LLC 25

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                }}2(a),(c)

((

                                                                                                  }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                  }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                     }}2(a),(c)

Figure 4-3. Sample of ECCS master task list 4.1.1 Human-System Interface Inventory Development TA provides input to the HSI inventory and characterization, and for the HSI style guide, providing the foundation for the HSI design, HSI design verification, and task support verification. Task support verification is performed as part of the human factors verification and validation activities and ensures that the alarms, displays, controls, and task support needed for personnel to perform their tasks are provided. Figure 4-4, Figure 4-5, Figure 4-6, and Figure 4-7 provide examples of the relationship between tasks and components, displays, alarms and controls, and how they relate to the development of HSI inventory (Reference 6.2.4). © Copyright 2019 by NuScale Power, LLC 28

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 This data is used to determine the following:

        *    ((
        }}2(a),(c),ECI

((

                                                                                                 }}2(a),(c),ECI Figure 4-4.          Hierarchy example of component-to-task relationship within the database Each system is analyzed to determine which equipment and displays are required to ensure proper monitoring and control of the system. Each instrument (and display) is analyzed to determine the tasks needed to support equipment operation.

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                       }}2(a),(c),ECI

((

                                                                                                     }}2(a),(c),ECI Figure 4-5.        Hierarchy example of instrumentation (and display)

Each system is analyzed to determine which alarms are needed to determine the system functions are met. With each alarm that is determined to be valid for the system, a task needs to be written to alert the operators. If human action needs to be taken, then one or more tasks need to be developed to support the system. ((

                                      }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                }}2(a),(c),ECI Figure 4-6.        Hierarchy example of alarms to task relationship within the database Each system is analyzed to ensure proper process control. Each control is analyzed to determine the tasks needed to support equipment operation. ((
                                }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                             }}2(a),(c),ECI Figure 4-7. Hierarchy example of controls 4.1.2    System Tasks Determined by Function Each system function is analyzed and tasks are developed that support the system functions.

The analysis includes equipment operation needed for the task based on the process and equipment operation (e.g., start or stop a pump). ((

                                                                 }}2(a),(c),ECI

((

                                                                                             }}2(a),(c),ECI Figure 4-8. Task examples for function of Purify the reactor coolant

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 4.1.3 Alarm Response Task Determination Results Alarms are identified using criteria established during HSI design and analyzed in task analysis. An alarm is a mechanism for informing an operator of an abnormal plant condition for which an operator action is required. Tasks have been assigned to the alarms to develop alarm response procedures. ((

                                                                        }}2(a),(c),ECI

((

                                                                                                 }}2(a),(c),ECI Figure 4-9.        Alarm response hierarchy for CVCS

((

                                                                   }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                               }}2(a),(c),ECI Figure 4-10.       Example of CVCS alarm response procedure 4.1.4    Surveillance Task Determination Results Tasks related to surveillance, test, inspection, and maintenance procedures are identified for TA. Human errors during the performance of surveillance, test, and inspection may result in components being in a state that induces a plant transient or can trigger a precursor to a plant transient. In both cases, the surveillance, test, and inspection actions are selected for task analysis to identify defenses against these errors.

((

                                           }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                }}2(a),(c),ECI Figure 4-11.         Surveillance hierarchy 4.1.5    Operational Sequence Diagram Results The objective of OSD is to show the information flow between the operators and the HSI from the beginning to the end of the task. It also shows the operator actions if the automatic actions fail. The sequencing of the tasks provides input for the plant operating procedures and defines the activities that plant personnel are trained to execute. Figure 4-12 an example of a CVCS OSD and Figure 4-13 is an example of an ECCS OSD.

((

        }}2(a),(c),ECI

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                     }}2(a),(c),ECI Figure 4-12.       CVCS operational sequence diagram for inadvertent boron dilution

((

                                      }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                    }}2(a),(c)

Figure 4-13. ECCS operational sequence diagram for ECCS initiation 4.2 Plant Task Analysis Results The TA provides the information needed to build a complete HSI inventory and the characteristics of that inventory needed to monitor and control critical functions during normal and abnormal operating conditions. This group of tasks includes those tasks with potentially negative consequences (not classified as IHAs). The following plant tasks are within scope for the task analysis and include

miscellaneous events and evolutions
anticipated operational occurrences (AOO)
infrequent events
accidents

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2

special events (SE)
emergency operating procedures Examples of each of these are shown in Sections 4.2.1 through 4.2.6.

4.2.1 Miscellaneous Events and Evolutions Miscellaneous events and evolutions are events that are not covered under anticipated operating occurrences, infrequent events, accidents, special events, or emergency operating events. ((

                                                                                                 }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 4.2.2 Anticipated Operational Occurrences An AOO is a condition of normal operation that is expected to occur one or more times during the life of the plant. Figure 4-15 is an example of the AOO tasks associated with the NuScale plant. ((

                               }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                }}2(a),(c),ECI Figure 4-15. Anticipated operational occurrences task examples 4.2.3    Infrequent Events Infrequent event is used to apply to transients that have a frequency between 1E-2 and 1E-4 per year and dose acceptance criteria is less than or equal to 10 percent of accident dose. ((
                           }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                     }}2(a),(c)

Figure 4-16. Infrequent event examples 4.2.4 Accidents Accidents are defined as postulated as design basis events that are not expected to occur during the lifetime of a reactor. Figure 4-17 is an example of the accident tasks associated with the NuScale plant. © Copyright 2019 by NuScale Power, LLC 41

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                             }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 4.2.5 Special Events (SE) Special events have been identified by the NRC and are not categorized by their effect on system behavior or likelihood of occurrence. These events are analyzed to demonstrate conformance with NRC regulations. ((

                                                                                                 }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 4.2.6 Emergency Operating Procedures Emergency operating procedures are plant procedures that direct operator actions necessary to mitigate the consequences of transients and accidents that have caused plant parameters to exceed module protection system set points or engineered safety feature set points, or other established limits. ((

                                                                                                        }}2(a),(c)

Figure 4-19. Emergency operating task examples 4.3 Task Support 4.3.1 Task Attributes Tasks attributes are assigned to each task by the SME to identify various aspects of the task that are characteristic of that task. ((

        }}2(a),(c) Task attributes on the right shows examples and results such as the following:

time pressure
primary operator (for job responsibilities)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2

cognitive work load
communication with other groups (internal)
communication - reporting and external communication
consequences of inaccurate performance
stress
time available (IHAs only)
task type
task time
frequency
time constraints (IHAs only)

((

                                                                                               }}2(a),(c),ECI Figure 4-20. Task attribute cross reference example

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 4.3.2 Personnel Task Designation Job positions are used to determine the workload for each of the operating positions. This is also a method to identify training requirements based on tasks assigned per position. ((

        }}2(a),(c)

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                            }}2(a),(c),ECI Figure 4-21. Job position task examples for reactor operator 2/3 for CVCS

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                                        }}2(a),(c)

Figure 4-22. Job position determination for reactor operator 1 for ECCS 4.3.3 New Task Results New tasks are developed if they are tasks for new systems compared to existing nuclear plants or tasks that, while not new, are performed significantly differently from existing plants. ((

                                      }}2(a),(c),ECI

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                               }}2(a),(c),ECI Figure 4-23. Sample of new tasks for CVCS

((

                            }}2(a),(c),ECI

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                  }}2(a),(c),ECI 4.4      Knowledges and Abilities KAs are important to ensure the personnel have the proper training to perform the tasks.

((

                                               }}2(a),(c)

((

                                                                                              }}2(a),(c),ECI Figure 4-24. Example of CVCS skills and knowledges categories

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                                                     }}2(a),(c)

((

                  }}2(a),(c),ECI

((

                                                                                            }}2(a),(c),ECI Figure 4-25. CVC component knowledge and ability example

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 4.5 Important Human Action Results ((

                                              }}2(a),(c)

((

                                                                                             }}2(a),(c),ECI Figure 4-26. Important human action task and element example 1

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 ((

                                                      }}2(a),(c),ECI

((

                                                                                             }}2(a),(c),ECI Figure 4-27. Important human action task and element example 2

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 5.0 Analysis Conclusions The architecture and process in which the data is collected allows for a wide range of results. Changes can be made in a way that keeps the data consistent across elements of the HFE process; FRA/FA, OER, TA, S&Q, and V&V. TA has also been a major input for the control room staffing plan validation (work load analysis) for the operators. Tasks that are high stress, high consequence of inaccurate performance, high cognitive work load, etc., have been identified to determine the overall operator work load. With the work load established, efforts are made to lower the operator work load through HSI design, automation, procedures, and training. The results of the control room staffing plan validation are described in Reference 6.2.3 Tasks are an integral part of operating procedures, which makes TA the foundation for all procedures required to operate the plant during startup, normal, shutdown, abnormal, and emergency conditions. This makes TA crucial to the safe operation of the plant. SMEs provide input to the design where deficiencies may exist that involve human factors improvement or enhancement to the plant design. TA is the cornerstone for cognitive and performance-based operator training that is required for S&Q. Task-based learning objectives are determined and the knowledge and abilities are identified for the operator training program. TA is essential for HSI development and the V&V process. Each MCR task is demonstrated on the HSI to ensure the operators can perform the tasks in an accurate and timely manner. Task support verification ensures the HSI provides the needed alarms, information, controls, and task support for personnel to perform their tasks. TA and HSI development are vital to the safe operation of the plant. © Copyright 2019 by NuScale Power, LLC 54

Human Factors Engineering Task Analysis Results Summary Report RP-0316-17616-NP Rev. 2 6.0 References 6.1 Source Documents 6.1.1 U.S. Nuclear Regulatory Commission, Human Factors Engineering Program Review Model, NUREG-0711, Rev. 3, 2012. 6.2 Referenced Documents 6.2.1 NuScale Human Factors Engineering Program Management Plan, RP-0914-8534. 6.2.2 Human Factors Engineering Functional Requirements Analysis and Function Allocation Results Summary Report, RP-0316-17615. 6.2.3 Control Room Staffing Plan Validation Results, RP-0516-49116. 6.2.4 Human Factors Engineering Human-System Interface Results Summary Report, RP-0316-17619. 6.2.5 Human Factors Engineering Treatment of Important Human Actions Results Summary Report, RP-0316-17618. © Copyright 2019 by NuScale Power, LLC 55

LO-0219-64509 : Affidavit of Thomas A. Bergman, AF-0219-64510 NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360-0500 Fax 541.207.3928 www.nuscalepower.com

NuScale Power, LLC AFFIDAVIT of Thomas A. Bergman I, Thomas A. Bergman, state as follows: (1) I am the Vice President of Regulatory Affairs of NuScale Power, LLC (NuScale), and as such, I have been specifically delegated the function of reviewing the information described in this Affidavit that NuScale seeks to have withheld from public disclosure, and am authorized to apply for its withholding on behalf of NuScale. (2) I am knowledgeable of the criteria and procedures used by NuScale in designating information as a trade secret, privileged, or as confidential commercial or financial information. This request to withhold information from public disclosure is driven by one or more of the following: (a) The information requested to be withheld reveals distinguishing aspects of a process (or component, structure, tool, method, etc.) whose use by NuScale competitors, without a license from NuScale, would constitute a competitive economic disadvantage to NuScale. (b) The information requested to be withheld consists of supporting data, including test data, relative to a process (or component, structure, tool, method, etc.), and the application of the data secures a competitive economic advantage, as described more fully in paragraph 3 of this Affidavit. (c) Use by a competitor of the information requested to be withheld would reduce the competitors expenditure of resources, or improve its competitive position, in the design, manufacture, shipment, installation, assurance of quality, or licensing of a similar product. (d) The information requested to be withheld reveals cost or price information, production capabilities, budget levels, or commercial strategies of NuScale. (e) The information requested to be withheld consists of patentable ideas. (3) Public disclosure of the information sought to be withheld is likely to cause substantial harm to NuScales competitive position and foreclose or reduce the availability of profit-making opportunities. The accompanying report reveals distinguishing aspects about the method by which NuScale develops its human factors engineering task analyses. NuScale has performed significant research and evaluation to develop a basis for this method and has invested significant resources, including the expenditure of a considerable sum of money. The precise financial value of the information is difficult to quantify, but it is a key element of the design basis for a NuScale plant and, therefore, has substantial value to NuScale. If the information were disclosed to the public, NuScale's competitors would have access to the information without purchasing the right to use it or having been required to undertake a similar expenditure of resources. Such disclosure would constitute a misappropriation of NuScale's intellectual property, and would deprive NuScale of the opportunity to exercise its competitive advantage to seek an adequate return on its investment. (4) The information sought to be withheld is in the enclosed report entitled "Human Factors Engineering Task Analysis Results Summary Report," RP-0316-17616-P, Revision 2. The enclosure contains the designation Proprietary" at the top of each page containing proprietary information. The information considered by NuScale to be proprietary is identified within double braces, "(( }}" in the document. (5) The basis for proposing that the information be withheld is that NuScale treats the information as a trade secret, privileged, or as confidential commercial or financial information. NuScale relies upon AF-0219-64510 Page 1 of 2

the exemption from disclosure set forth in the Freedom of Information Act ("FOIA"), 5 USC § 552(b)(4), as well as exemptions applicable to the NRC under 10 CFR § 2.390(a)(4) and 9.17(a)(4). (6) Pursuant to the provisions set forth in 10 CFR § 2.390(b)(4), the following is provided for consideration by the Commission in determining whether the information sought to be withheld from public disclosure should be withheld: (a) The information sought to be withheld is owned and has been held in confidence by NuScale . (b) The information is of a sort customarily held in confidence by NuScale and, to the best of my knowledge and belief, consistently has been held in confidence by NuScale. The procedure for approval of external release of such information typically requires review by the staff manager, project manager, chief technology officer or other equivalent authority, or the manager of the cognizant marketing function (or his delegate), for technical content, competitive effect, and determination of the accuracy of the proprietary designation. Disclosures outside NuScale are limited to regulatory bodies, customers and potential customers and their agents, suppliers, licensees, and others with a legitimate need for the information, and then only in accordance with appropriate regulatory provisions or contractual agreements to maintain confidentiality. (c) The information is being transmitted to and received by the NRC in confidence. (d) No public disclosure of the information has been made, and it is not available in public sources. All disclosures to third parties, including any required transmittals to NRC, have been made, or must be made, pursuant to regulatory provisions or contractual agreements that provide for maintenance of the information in confidence. (e) Public disclosure of the information is likely to cause substantial harm to the competitive position of NuScale, taking into account the value of the information to Nu Scale, the amount of effort and money expended by NuScale in developing the information, and the difficulty others would have in acquiring or duplicating the information. The information sought to be withheld is part of NuScale's technology that provides NuScale with a competitive advantage over other firms in the industry. NuScale has invested significant human and financial capital in developing this technology and Nu Scale believes it would be difficult for others to duplicate the technology without access to the information sought to be withheld. I declare under penalty of perjury that the foregoing is true and correct. Executed on April 29, 2019 AF-0219-64510 Page 2 of 2}}

ML19119A393

Text

SUBJECT:

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