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System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

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Page 1: System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

System Safety & Mission Assurance (SS&MA)

for Sub-Class D Missions

Steve Jara

NASA Ames System Safety & Mission Assurance Division

Page 2: System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

SS&MA: A set of system safety and quality management processes that minimize the risk associated with each system and phase of a project’s life cycle. They are normally executed by/with:

• Independent experts (not responsible for the project’s cost/schedule)

• A high degree of independent verification & validation (V&V)

• A flow-down of requirements throughout the supply chain

• A closed-loop root cause analysis based corrective action system

• A de-emphasis on their impact to project cost & schedule

Page 3: System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

Sub-Class D Missions: Low budget fast paced projects executed under a set of streamlined processes aimed at mitigating only the most significant risks to mission success. They are normally executed by/with: • An atmosphere of innovation & creativity

• Cross-trained thinly spread teams (with limited oversight)

• A high percentage of COTS & low heritage parts

• A high degree of reliance on vendor SS&MA processes

• An open-loop “make-it-work” corrective action system

• An emphasis on cost & schedule

Page 4: System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

Why apply SS&MA on Sub-Class D Missions?

• Traditional arguments against:• Stifles innovation & creativity (rules based)

• Too costly & time consuming

• Unnecessary when risk of mission failure is acceptable

• The real story; SS&MA is critical to mission success:• Tailorable, flexible, & identifies where rules are good

enough or where innovation is required

• Cost can be limited to initial risk assessments followed by the mitigation of the most significant risk

• Ensures projects allocate their limited resources judiciously and intelligently

Mission failure is not acceptable due to blindly/poorly applied processes; SS&MA provides critical insight & intelligence

Page 5: System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

Specifically, with respect to safety, SS&MA• Helps project’s understand & comply with applicable safety

requirements• Range

• Payload Safety Working Group

• Launch provider (via Interface Control Documents)

• Generates required safety documents• Verifies supporting evidence and closure to supporting documents

• Champions a safe working environment during all phase of the project life cycle

Page 6: System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

Specifically, with respect to mission assurance, SS&MA• Helps project’s understand & comply with applicable quality

requirements, including but not limited to:• ISO9001/AS9100 Quality Management

• Workmanship

• EEE parts

• Generates required quality documents• Verifies supporting evidence and closure to supporting documents

• Champions a “do it right the first time” working environment during all phases of the project life cycle

Page 7: System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

SS&MA during hardware fabrication & assembly• SS&MA supports hazard report verification and closure

• Supports inspections to verify controls required by hazard reports

• SS&MA helps determine areas that require additional oversight (prioritizing safety over mission success)

• Apply an “eyes wide open” SS&MA approach; mission success builds upon rather than undermines safety requirements

• Establish the level of risk the project while not compromising safety

• Creative thinking outside the box is acceptable after safety definitions and design are understood

• Workmanship standards are not mandatory for electronic assemblies and COTs unless project (based on SS&MA recommendation) deems necessary

Page 8: System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

SS&MA during environmental testing: Environmental testing closes many V&V requirements in interface ICD, safety compliance, range safety, and Payload Safety Review Panel (PSRP) documents

• SS&MA should witness each test (including the test set-up) and requirements closing; this ensures each applicable requirement is verified without unnecessary expenditure of time or resources

• This ensures that all questions and/or RIDs/RFAs generated during technical reviews are addressed such that open items and hazard reports can be closed without having to repeat a test

Page 9: System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

Fitting SS&MA within a Sub-Class D mission’s budget & schedule• Embed/integrate SS&MA into all project elements & phases

• Cross-train key project personnel in basic SS&MA principles

• Hold everyone responsible for SS&MA

• Ensure SS&MA is a topic during all project meetings & reviews

• Use of peer reviews should be employed to compensate for the lack of independence (when a dedicated SS&MA lead is unavailable)

• Appoint one individual as the SS&MA lead

• May be independent & exclusive or a project member with other responsibilities (i.e., systems engineer, discipline lead, etc.)

• If not independent & exclusive, the project should use SMEs from the SS&MA organization as consultants and peer reviewers

• The SS&MA lead should work project-wide SS&MA issues

• Should assess & prioritize the order in & degree to which SS&MA actions are implemented based on project risk, phase, schedule, & budget

Page 10: System Safety & Mission Assurance (SS&MA) for Sub-Class D Missions Steve Jara NASA Ames System Safety & Mission Assurance Division

Lesson Learned (optimizing SS&MA)• Documentation must be readable and easily understandable

• Streamlining and reducing the amount of documents will save time and can aid in their readability (i.e., omit all boiler plate and unnecessary information)

• Invest the effort to develop a high fidelity concept of operations description• Shows how each subsystem of the design helps meet the mission goals

• Minimizes potential mismatches between system materials and the mission environment(s)

• Provides a mission-wide starting point for all hazard analyses

• Minimizes the possibility of designing and building to unverifiable requirements

• Research, understand, and plan to comply with the safety requirements early• The requirements are defined and the process is clear (e.g., range, PSRP)

• Leverage the expertise of the groups the project must interface with to meet safety and design requirements• PSRP, Range Safety, vehicle provider, and others can help clarify and understand

requirements

• They do this all the time and can save a project from doing unnecessary work: ask for their lesson learned and best practices

• And most importantly it establishes their buy-in and support, making the task of presenting a compliance argument to them relatively easier