Library

A Spreadsheet Tool for Managing Probabilistic Risk Assessment Data

by Michael J. Heckwolf; Gary A. Epstein

This paper describes a real-world application describing the development of a comprehensive spreadsheet tool for managing the results of..

  • Filetype: pdf
  • Publish date: 2011-01
  • Keywords:RAMS 2011 Proceedings,Probabilistic Risk Assessment, Fault Tree, Simulation

Vehicle Wide Optimization of Subsystem Trade Study Option Selection

by Mattenberger,Chris

The Altair lunar lander design team was able toimplement a process of Risk Informed Design utilizing the Valador Reliability Tool in order to achieve high reliability...

  • Filetype: pdf
  • Publish date: 2010-01
  • Keywords:RAMS 2010 Proceedings,Probabilistic Risk Assessment, Systems Engineering

Probabilistic Risk Assessment for Decision Making during Spacecraft Operations

by Meshkat, Leila

The focus of this paper is on describing the particular methods used for PRA modeling during the operational phase of a spacecraft by gleaning insight from recently conducted case studies on two operational Mars orbiters...

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Probabilistic Risk Assessment, Safety and Risk Management, Weibull

Reliability and Quality of Service in Weighted Probabilistic Networks using Algebraic Decision Diagrams

by Bobbio, Andrea; Terruggia, Roberta

We discuss two types of interpretation of weights: weights as distances and weights as capacities. Correspondingly, two different algorithms based on a data structure called Algebraic Decision Diagram (ADD), are discussed and presented...

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Networks, System Reliability, Probabilistic Risk Assessment

Concept for the NASA Risk and Reliability Data Collection and Analysis Environment

by Groen, Frank J.; Smith, Curtin Lee

This paper describes the concept of a data collection and analysis environment that is being developed to support the collection, analysis, and distribution of R&M data...

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Probabilistic Risk Assessment, Bayesian Analysis, Data Analysis

Risk Analysis for Transportation Projects

by Franklin, Paul H.

This paper discusses application of risk management to transportation projects. Insufficient attention to risk management can lead to significant cost overruns and schedule delays...

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Safety and Risk Management, Reliability Model, Probabilistic Risk Assessment

Assessment of Launch Vehicle Debris Risk During Ascent Aborts

by Gee, Ken; Mathias, Donovan L.

In the event of a space launch vehicle explosion during ascent, the debris field generated by the explosion poses a risk to the crew. To evaluate this risk, a model of the debris environment was created to determine the probability of a debris strike...

  • Filetype: pdf
  • Publish date: 2008-02
  • Keywords:RAMS 2008 Proceedings,Probabilistic Risk Assessment, Safety and Risk Management

Simulation Assisted Risk Assessment Applied to Launch Vehicle Conceptual Design

by Lawrence,Scott; Mathias, Donovan L. Go, Suzie; Gee, Ken

A simulation-based risk assessment approach is presented and is applied to the analysis of abort during the ascent phase of a space exploration mission...

  • Filetype: pdf
  • Publish date: 2008-02
  • Keywords:RAMS 2008 Proceedings,Probabilistic Risk Assessment, Safety and Risk Management

Software Tools for PRA

by Li, Ming; Pruessner, Paula S.

Probabilistic Risk Assessment (PRA) is performed to assess the probability of failure or success of a system’s operation. Results provided by the risk assessment methodology are used to make decisions concerning choice of improvements to the design...

  • Filetype: pdf
  • Publish date: 2008-02
  • Keywords:RAMS 2008 Proceedings,Probabilistic Risk Assessment

A Unified Model for Evaluating the Safety Integrity Level of Safety Instrumented Systems

by Bukowski, Julia

This paper proposes a new figure of merit (FOM) for evaluating safety integrity levels (SIL) for safety instrumented systems (SIS)...

  • Filetype: pdf
  • Publish date: 2008-02
  • Keywords:RAMS 2008 Proceedings,Safety and Risk Management, Reliability Model, Probabilistic Risk Assessment, Markov

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