epri flood protection project statusjan 23, 2017 · functionality to stop survey and resume (with...

© 2017 Electric Power Research Institute, Inc. All rights reserved.

David ZiebellSenior Technical Leader

1/23/17NRC External Flooding Research

Workshop

EPRI Flood Protection Project

Status

2© 2017 Electric Power Research Institute, Inc. All rights reserved.

Topics

Highlights: 2015 EPRI Flood Protection Systems Guide

Scope of 2016-17 Flood Design Basis Best Practices Guideline

Timeline for Development of Guideline

Sample of 2016 Survey Questions


Flood Protection Systems Guide – Available to Members

12 Utilities Involved in TAG

Good Initial Industry Feedback

Significant Product Downloads Since Publication 11/24/15

Product ID: 3002005423


Flood Protection Systems Guide – 2015 Technical Report

Immediate response to assist members by providing flood protection feature guidance.

Focused on feature descriptions, design criteria, inspections, and available testing methods.


Flood Protection Systems Guide – Section Overview Section 2: Types of Flood Barriers Used in Nuclear Power Plant Applications

Section 3: Current Testing Methods and Acceptance Criteria

Section 4: Design Considerations Associated with Flood Protection Components

Section 5: In-service Inspection, Testing, and Maintenance Recommendations

Section 6: Industry Performance Analysis

Section 7: Establishing and Managing Flood Bases Requirements


Flood Protection Systems Guide Overview

Section 2: Types of Flood Barriers Sections of Guide Structured by

Categories and Components Initially Defined in Section 2:– Passive Components– Active Components

Flood Barrier Penetration Seal (FBPS) – A material, combination of materials, or pre-manufactured device installed inside a penetration through a flood barrier to seal the opening and maintain the flood rating of the barrier. Typical penetrations include openings to accommodate the passage of pipe, tubes, conduits, cable trays, cables and ventilation ducts.


Flood Protection Systems Guide Overview Section 3: Current Testing Methods and Acceptance Criteria

– Summary of Historic Penetration Seal Testing Methods– Primer for follow-on work related to test criteria development


Flood Protection Systems Guide Overview Section 4: Design Considerations

– Focus on Flood Barrier Penetration Seals (FBPS) Mechanical Penetrations Electrical Penetrations Ventilation Penetrations Combination Penetrations



Section 5: In-service Inspection, Testing, and Maintenance Recommendations



Section 7: Establishing and Managing a Flood Bases– Best practices from within TAG outlined– Primer for Design Basis Best Practices Guideline focused more on “programmatic” aspects


2016/2017: Best Practices Guideline - Design/Licensing Basis

NSIAC requested that EPRI develop guidance by end of 2017.

Document Purpose: Collect best practices from the industry for maintaining an external flooding design/licensing basis.

Focused on External Flooding but will acknowledge overlap between external and internal flooding.


Design/Licensing Basis Best Practices Guideline - Outline

Design (Method) Qualification (QA Requirements) Maintenance (Procedures) Modification (Design Change Process) Inspection (Flooding Design Basis Walk downs) Testing (Periodic Surveillance of Flood Protection Features) Mitigation (Mitigating Strategies) Training Reevaluations Integrated Assessment Documentation and Reporting


Best Practices Guideline – Section Outlines Design (Method)

– Identification of features– Acceptable methods– Consolidated documents– PRA

Qualification (QA Requirements) – Appendix B controls for back up– Augmented quality requirements or something else– Attributes

Maintenance (Procedures) – Plant Configuration for Full Range of Operation– Work Management Procedures– Risk assessment during maintenance and aggregate risk– Maintenance Rule– PMs– Installation and Testing


Best Practices Guideline - Design/Licensing Basis Modification (Design Change Process)

– Requirements for Flooding Design Basis– New Seal Type Qualification for Design Basis

Inspection (Flooding Design Basis Walkdowns) – Lessons Learned from NEI 12-07– Additional Requirements– Sampling of Flood Protection Features

Testing (Periodic Surveillance of Flood Protection Features) – WCAP 17700-NP– Barrier Surveillance– Active / Passive / Temporary

Mitigation (Mitigating Strategies) – Procedures in place and time requirements– Compliment FLEX Guidance without Duplication– Capture Lessons Learned from 50.54(f) Response


Best Practices Guideline - Design/Licensing Basis Training

– Periodic Training– Reasonable Simulation– Validate Assumed Time Requirements– Qualifications

Reevaluations– NUREG/CR 7046– Triggers– Computer Software– Vulnerability Determination Process

Integrated Assessment (IA)– Pending Content from Appendix G and IA Document

Documentation and Reporting– Walkdown Forms from NEI 12-07 may be used– Testing Results– Existing Engineering Evaluations or Calculations


Best Practices Guideline – Next Steps

– Survey sent to 70+ Utility Contacts on June 14th, 2016

– Survey ended September 20, 2016, 76% completion rate, 100 % of US utilities

– Technical Advisory Group will have review 1st Draft report Q1 2017

– Publication Q4 2017


Detailed Web-Based Survey Developed

Independent specialty firm conducted survey.Detailed Industry TAG Review of Questions:

– Only 1 opportunity to collect this information.– Common titles for utility contacts:Flood (External and/or Internal) Protection Program ManagersExternal Hazards Program ManagersFukushima Task Force ManagersCivil Design EngineersFire Protection Program Managers


Data Collection Process for SurveyWeb-based methodology

– Invitation and up to five reminders to non-respondents– Branded by EPRI and invitation “signed” by Ken Canavan (Director Plant Technology,

EPRI)– Questionnaire format Multi-page questionnaire Skip patterns/auto fills programmed and transparent to respondent View contains progress bar Functionality to stop survey and resume (with previous responses saved) at a later

time Ability to upload documents

Initial Invitation

Reminder #1

Reminder #2

Two weeksafter initial invitation

Two weeksafter Reminder #1

Reminder #3


Reminder #4

Two weeks after Reminder #3

Reminder #5


Advance Letters

~30 and ~7 days before field opens


Examples of Survey Questions

What is the maximum D/P your flood protection features are required to withstand?Do you have an External Flood Protection Program?Which departments are involved in management and support

of these flood protection features?Are routine external periodic flood protection self-

assessments being performed?What are configuration control methods being used for

various features?What training / qualifications are required?


EPRI Point of Contact

Project Manager:David Ziebell ([email protected]) – 404-316-9823

Supporting / Prior EPRI Participants:Jeff Greene, Senior Technical LeaderSam Harvey, Principal Technical Leader

mailto:[email protected]


Together…Shaping the Future of ElectricityPresenter:John E. WeglianSenior Technical [email protected]

Technical Lead:David ZiebellSenior Technical [email protected]



epri flood protection project statusjan 23, 2017 · functionality to stop survey and resume (with...

Documents