1 / 17

FRANX Code for Fire PRA Analysis

FRANX Code for Fire PRA Analysis. PSA2008 09/08/2008 Jeff Riley Richard Anoba / Anoba Consulting Bijan Najafi / SAIC. Overview. Where does FRANX fit into the process Some key FRANX features. Some history. FRANC Started in 1995 (Exelon) Scenario by scenario screening calculations XINIT

makoto
Download Presentation

FRANX Code for Fire PRA Analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. FRANX Code forFire PRA Analysis PSA200809/08/2008 Jeff Riley Richard Anoba / Anoba Consulting Bijan Najafi / SAIC

  2. Overview • Where does FRANX fit into the process • Some key FRANX features

  3. Some history • FRANC • Started in 1995 (Exelon) • Scenario by scenario screening calculations • XINIT • Started in 2003 (OPPD) • Model morphing • FRANX • 2008 • Combine FRANC and XINIT • Add interfaces to cable and fire propagation

  4. Fire Sources & Freq(scenarios) Cable & EquipmentLocations Fire Progression& Damage Plant Effect(PSA Model) Software Overview

  5. Integration Diagram

  6. Scenario Management • Define fire scenarios • Zone (supports multiple zones) • Relevant fire attributes (Duration, size, …) • Severity factor & non-suppression probability • Fire Impacts • Failed equipment, spurious events

  7. Scenario Details

  8. Mapping Scenarios to Fire Impacts • Induced initiator • Direct impact • Multi-layer mapping from cable database • Support for unknown locations • Support for success and degraded effects if needed

  9. Special fire effects • Spurious operation • Changes to HRA due to fire • New human actions, changed probabilities, blocked recoveries • Other fire-spceific model changes

  10. Deterministic Evaluation • Boolean Failure • Status Panel

  11. CDF Quantification • Full PRA model • Accepts Mutually Exclusive Files, Flags etc. • Recovery rules • CDF calculation from CCDP • Screening / Hiding

  12. Scenario Validation & Refinement • Ones-run cutsets allows diagnosis • Track cutsets through fault tree • Calculate importances

  13. Integration with Risk Monitor • New PRA model is constructed that includes fire initiators and scenario information (human actions, NSP, etc.) • Allows simultaneous calculation of all fire impacts • Model can be used with real-time model in risk monitors such as EOOS

  14. Interface to Cable Data • FRANX mapping database • Import from more sophisticated database • Plant Raceway/Cable Data • Cable/BE Data

  15. Fire Effects • Calculates Ignition Frequency and non-suppression probability • Calculates fire progression and subsequent Equipment Impacts • Import then into FRANX

  16. Future work Fire Propagation Model • Incorporate simple calculations of fire frequencies and damage effects Configuration Risk Management Improvements • Track status of fire barriers, suppression systems, etc. • Ability to change the status of barriers etc.. (not possible now) Other External Events • Incorporate additional flood & siesmic specific features

  17. Together…Shaping the Future of Electricity

More Related