System Safety Steering Group

"The NASA System Safety Steering Group (S3G) develops Agency-wide plans and strategies to improve the:

  1. Content of the system safety discipline and competency of the System Safety workforce, especially with regard to quantitative risk modeling and analysis, systems engineering, and risk management (including risk-informed decision making).
  2. Integration of system safety with related disciplines; including, but not limited to reliability, availability, and maintainability; risk management; risk assessment; systems engineering; cost and schedule analysis; and program/project management.
  3. Implementation of the system safety requirements of NPR 8000.4A, NPR 8715.3C, and NPR 8705.2B.
  4. Inclusion of system safety personnel early in project development and systems engineering."

System Safety Program Steering Group Charter


Homayoon Dezfuli

System Safety Technical Fellow

Learn more about System Safety Technical Fellow Homayoon Dezfuli.

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Points of Contact

Points of Contact

For details on contacting a System Safety Point of Contact (PoC) for your location, click below.

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Launch SATERN 

SATERN Courses

Course Title Course Number Buttons
Accident Precursor Analysis I SMA-SS-WBT-0007 Additional Details
Accident Precursor Analysis II SMA-SS-WBT-0014 Additional Details
Application of Bayesian Probability Inference to Probabilistic Risk Assessment of Space Systems SMA-SS-WBT-0004 Additional Details
Basic Fault Tree Analysis I SMA-SS-WBT-0009 Additional Details
Basic Fault Tree Analysis II SMA-SS-WBT-0010 Additional Details
Hazard Analysis Basics SMA-SS-WBT-200 Additional Details
Hazard Report Evaluation Basics SMA-SS-WBT-901 Additional Details
Modeling and Simulation in Probabilistic Safety Analysis SMA-SS-WBT-0015 Additional Details
P: Basics of System Safety SMA-SS-WBT-100 Additional Details
Probabilistic Risk Assessment Methods (PRAM) for Practitioners and Managers SMA-SS-WBT-0001 Additional Details
Probability & Statistics I SMA-SS-WBT-0005 Additional Details
Probability & Statistics II SMA-SS-WBT-0006 Additional Details
Risk Informed Decision Making (RIDM) SMA-SS-WBT-0013 Additional Details
Safety & Mission Assurance in the Acquisition Process SMA-SS-WBT-0023 Additional Details
System Safety Engineering SMA-SS-WBT-440 Additional Details
System Safety I SMA-SS-WBT-210 Additional Details
System Safety II SMA-SS-WBT-0012 Additional Details
System Safety Fundamentals SMA-SS-WBT-0002 Additional Details
Workshop in SAPHIRE Code and Probabilistic Risk Assessment for Space Systems SMA-SS-WBT-0003 Additional Details

Instructor-Led Courses

Course Title Course Number Buttons
Assessing Project Performance for STEP SMA-SS-ILT-APP Additional Details
Management of Space Technology for STEP SMA-SS-ILT-MSTP Additional Details
Performance-Based Statement Work for STEP SMA-SS-ILT-PBSOW Additional Details
Project Planning Analysis and Control for STEP SMA-SS-ILT-PPAC Additional Details

Policy and Guidance


Policy Title Buttons Buttons
NPD 8700.1 NASA Policy for Safety and Mission Success Additional Details See NPD 8700.1
NPR 8000.4 Risk Management Procedural Requirements Additional Details See NPR 8000.4
NPR 8705.2 Human Rating Requirements for Space Systems Additional Details See NPR 8705.2
NPR 8715.3, Chapter 2
NASA General Safety Program Requirements, System Safety Additional Details See NPR 8715.3
NASA/SP-2010-580 NASA System Safety Handbook, Volume 1: System Safety Framework and Concepts for Implementation Additional Details See NASA/SP-2010-580
NASA/SP-2014-612 NASA System Safety Handbook, Volume 2: System Safety Concepts, Guidelines, and Implementation Examples Additional Details See NASA/SP-2014-612
NASA/SP-2011-3422 NASA Risk Management Handbook Additional Details See NASA/SP-2011-3422
NASA/SP-2011-3421 Probabilistic Risk Assessment Procedures Guide for NASA Managers and Practitioners Additional Details See NASA/SP-2011-3421

Recommended Reading

Learn more about System Safety and related disciplines by reading these documents and those listed in the Policy and Guidance section.

The Role of NASA Safety Thresholds and Goals in Achieving Adequate Safety


NASA has recently instituted requirements for establishing agency-level safety thresholds and goals that define long-term targeted and maximum tolerable levels of risk to the crew as guidance to developers in evaluating “how safe is safe enough” for a given type of mission. This paper discusses some key concepts regarding the role of the Agency’s safety thresholds and goals in achieving adequate safety, where adequate safety entails not only meeting a minimum tolerable level of safety (e.g., as determined from safety thresholds and goals), but being as safe as reasonably practicable, regardless of how safe the system is in absolute terms.

See Paper

A Vision for System Safety


System Safety is the application of scientific, engineering, and management principles, criteria and techniques to optimize safety within the constraints of operational effectiveness, time and cost throughout all phases of the system life cycle. System Safety takes an integrated, system-level perspective towards safety, recognizing that safety is an emergent property that is defined only in the context of the whole system operating within a specified performance envelope. System Safety is an integral part of Systems Engineering and Risk Management that informs all decisions having the potential to affect safety.

See Paper