Industry PRA Leader

Scientech has been providing leading-edge PRA services in the U.S. and internationally for over 25 years. We are experts in all areas including level 1, level 2, level 3, internal and external events, and all operating modes.

Full Range of Capabilties

Level 1 PRA – At Power

  • Initiating Events
  • Accident Sequence Analysis
  • Success Criteria Development
  • Data Analysis
  • Human Reliability Analysis (HRA)
  • Quantification
  • Updates to meet Reg. Guide 1.200

Level 2 - At Power

  • Plant Damage States (PDSs) Definition
  • PDS Assignments
  • Containment Event Trees
  • Phenomenological Assessments (including MAAP and MELCOR)
  • Source term end state Assignments
  • MAAP and MELCOR Analysis – phenomena and accident progression
  • MAAP and MELCOR Analysis – source term

Low Power / Shutdown

  • Plant Operation States (POS)
  • PRA
  • Level 2 POS
  • MAAP for Level 2

MAAP Analysis and Update

  • MAAP parameter file
  • Extend MAAP parameter file to new versions

PRA Applications

  • Risk Monitor / Safety Monitor / EOOS Model Development and Maintenance
  • MSPI
  • Maintenance Rule 10CFR50.65
  • Air Operated Valves
  • GL 89-10 Motor Operated Valves
  • Risk Informed STI
  • Risk Informed Technical Specifications

Other External Events

  • External Events Screening Analysis
  • High Winds

Software Expertise

  • CAFTA
  • WinNUPRA
  • WinCAP
  • MAAP / MELCOR
  • EOOS
  • Safety Monitor
  • Risk Spectrum
  • Riskman
  • New Applications

Seismic PRA

  • Project Management / Technology Transfer
  • Probabilistic Seismic Hazard Analysis
  • Seismic Fragility Evaluation
  • Data Collection
  • Hazard Screening
  • Plant Walkdowns
  • Qualitative Screening
  • Seismic PRA and Seismic Margins
  • Peer Review Support
  • Finding and Observation Resolution

Flooding PRA

  • Project Management / Technology Transfer
  • Define Flood Areas and SSCs
  • Identify Flood Sources
  • Identify Mitigation Features
  • Plant Walkdowns
  • Qualitative Screening
  • Characterize Flood Scenarios
  • Flood Initiating Event Analysis
  • Flood Consequence Analysis
  • Evaluate Flood Mitigation Strategies
  • PRA Modeling of Flood Scenarios
  • Quantitative Analysis

Fire PRA

  • Project Management / Technology Transfer
  • Plant Boundary Definition and Portioning
  • Component Selection
  • Cable Selection
  • Qualitative Screening
  • Fire Risk Models
  • Ignition Frequencies
  • Initial Quantification
  • Fire Scoping
  • Detailed Circuit Analysis
  • Detailed Circuit Failure Likelihood Analysis
  • Fire Modeling
  • Main Control Room Analysis
  • Multi-Compartment Analysis
  • Fire HRA
  • Seismic / Fire Interactions
  • Quantification & Results Insights
  • Uncertainty and Sensitivity Analysis

Training

  • All PRA Topics
  • PRA Software
  • MAAP
  • MELCOR
  • Reliability Analysis
  • HRA