United States Nuclear Regulatory Commission - Protecting People and the Environment

NRC-RES/EPRI 2019 Fire Probabilistic Risk Assessment Workshop

Module I – Probabilistic Risk Assessment

On this page:

Course Overview

The U.S. Nuclear Regulatory Commission (NRC), Office of Nuclear Regulatory Research (RES), will sponsor a fire module workshop on fire probabilistic risk assessment (PRA). Working under a Memorandum of Understanding (MOU) for Cooperative Nuclear Safety Research, RES and Electric Power Research Institute (EPRI) have been developing state-of-the-art methods for conducting fire PRAs. In September 2005, the collaboration produced "EPRI/NRC-RES Fire PRA Methodology for Nuclear Power Facilities" (NUREG/CR-6850/EPRI 1011989), which is the subject of this 2019 course. Training will also include discussions relating to the fire PRA portion of the ASME/ANS PRA Standard.

Module I: PRA

This module covers the technical tasks for development of both the system and operator response to a fire. Specifically, this module covers NUREG/CR-6850, EPRI 1011989 Volume 2, Tasks:

  • Component Selection (Task 2)
  • Qualitative Screening (Task 4)
  • Fire-Induced Risk Model (Task 5)
  • Quantitative Screening (Task 7)
  • Fire Risk Quantification (Task 14)
  • Uncertainty and Sensitivity Analysis (Task 15)

This module is suited for PRA practitioners responsible for the systems modeling aspects of the fire PRA. Specifically, participants in this module should possess the following knowledge:

  • A general knowledge of PRA as applied to nuclear power plants, including typical approaches, modeling techniques (event trees, fault trees, interfaces between PRA and HRA), and the quantification of PRA models.
  • Some familiarity with plant systems typically found in nuclear power plants. A simplified, but reasonably realistic example of a few plant systems will be used to demonstrate the methodology.
  • Some familiarity with P&IDs and their use in developing PRAs

When:

Monday – Thursday June 24 – 27, 2019 8am – 4:30pm
Friday June 28, 2019 8am – 12pm

Where:
US NRC Professional Development Center in the greater Washington, DC area.
11555 Rockville Pike
Rockville, MD 20852
(All visitors must check-in at the security desk located inside One White Flint North at NRC Headquarters)

To top of page

Agenda (June 24–28, 2019)

MONDAY JUNE 24
TIME TOPIC PRESENTER
7:40 a.m. Arrival  
8:00 a.m. Welcome and Introduction Nick Melly
8:15 a.m. SNPP At-Power PRA Model Development Nick Melly
10:00 a.m. Break  
10:30 a.m. SNPP At-Power PRA Model Development (continued) Nick Melly
12:00 p.m. Lunch  
1:00 p.m. SNPP At-Power PRA Model Development (continued) Nick Melly
3:00 p.m. Break  
3:30 p.m. SNPP At-Power PRA Model Development (continued) Nick Melly
4:30 p.m. Adjourn  

To top of page

TUESDAY JUNE 25
TIME TOPIC PRESENTER
7:40 a.m. Arrival  
8:00 a.m. Introduction and Overview Nick Melly
10:00 a.m. Break  
10:30 a.m. Sample Plant Overview Nick Melly
12:00 p.m. Lunch  
1:00 p.m. Task 2 – Component Selection Nick Melly
3:00 p.m. Break  
3:30 p.m. Task 2 – Component Selection (continued) Nick Melly
4:30 p.m. Adjourn  

To top of page

WEDNESDAY JUNE 26
TIME TOPIC PRESENTER
7:40 a.m. Arrival  
8:00 a.m. Task 2 – Component Selection (continued) Nick Melly
10:00 a.m. Break  
10:30 a.m. Task 2 – Component Selection (continued) Nick Melly
12:00 p.m. Lunch  
1:00 p.m. Task 5 – Fire-Induced Risk Model Nick Melly
3:00 p.m. Break  
3:30 p.m. Task 5 – Fire-Induced Risk Model (continued) Nick Melly
4:30 p.m. Adjourn  

To top of page

THURSDAY JUNE 27
TIME TOPIC PRESENTER
7:40 a.m. Arrival  
8:00 a.m. Task 5 – Fire-Induced Risk Model (continued) Nick Melly
10:00 a.m. Break  
10:30 a.m. Task 5 – Fire-Induced Risk Model (continued) Nick Melly
12:00 p.m. Lunch  
1:00 p.m. Task 4 – Qualitative Screening Nick Melly
3:00 p.m. Break  
3:30 p.m. Task 7 – Quantitative Screening Nick Melly
4:30 p.m. Adjourn  

To top of page

FRIDAY JUNE 28
TIME TOPIC PRESENTER
7:40 a.m. Arrival  
8:00 a.m. Task 14 – Fire Risk Quantification and Task 15 – Uncertainty and Sensitivity Nick Melly
10:00 a.m. Break  
10:30 a.m. Questions, Wrap Up Nick Melly
12:00 p.m. Adjourn  

Please note this agenda provides an estimate of the schedule for the course and times may vary at instructor's discretion.

To top of page

Course Material

A link to download the materials will be provided approximately 2 weeks prior to the course.

Staff

Instructor:

Mr. Nicholas Melly is a Fire Protection Engineer employed by the U.S. Nuclear Regulatory Commission in the Office of Nuclear Regulatory Research.  He has nine years of experience working for the NRC in the area of Probabilistic Risk Assessment (PRA) and experience with the incorporation of internal fire hazards into the Standardized Plant Analysis Risk (SPAR) Models for use by the NRC inspectors. He has a B.S. in fire protection engineering from the University of Maryland.

Nicholas Melly
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Mail Stop T-10A12
Washington, DC 20555-0001
Email: Nicholas.Melly@nrc.gov
Phone: (301) 415-2392

Course Manager:

Tammie Rivera
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Mail Stop T-10A12
Washington, DC 20555-0001
Email: Tammie.Rivera@nrc.gov
Phone: (301) 415-2376

Registration

Registration is now closed for the NRC-RES/EPRI 2019 Fire Probabilistic Risk Assessment, Module I Workshop.

To top of page

Page Last Reviewed/Updated Tuesday, June 11, 2019