20 Questions
Which architectural techniques are familiar to individuals developing candidate architectures for achieving resilience?
Techniques for addressing adversity-driven considerations
In the Risk Management Process, what types of risks and opportunities are handled?
Risks and opportunities identified by resilience activities
What approach supports the circular economy throughout a product's life cycle?
Sustainability Engineering
What is the main focus of the Business or Mission Analysis Process in terms of resilience?
Identification of adversities and expectations for performance under those adversities
What is included in the stakeholder needs and requirements definition process in relation to resilience?
Identification of stakeholder needs and expectations for capability under adverse conditions
What is the primary consideration in the System Architecture Definition Process with respect to resilience?
Viewpoints selected to support the representation of resilience
What type of hazard is represented by an inexperienced driver driving a car on an icy road?
Socio-technical hazard
What is the primary focus of system safety engineering?
Understanding system environment, proposed system, and use
What is crucial for recognizing safety-critical requirements in system safety engineering?
Maintaining traceability
In the context of Systems Engineering, what is a key goal during System Architecture Definition and Design Definition?
To enable reuse, remanufacturing, or recycling of materials
What do the ISO 14000 series of environmental management standards provide methods for?
Analyzing and assessing industrial operations and their impacts on the environment
What are the key quality characteristics for a circular closed-loop system according to the text?
Resilient products and manufacturability considerations for recovering valuable resources after useful life
What is an important consideration for effective safety decision-making?
Recognizing dependencies between hazards
What is the nature of safety as mentioned in the text?
It is an emergent property and cannot be guaranteed 100%
What does good system safety engineering require according to the text?
A combination of qualified people, effective processes, appropriate governance, and culture
What should safety engineering processes strive to integrate tightly with?
Operational efficiencies and cost reduction
According to Akroyd-Wallis (2018), what should SE practitioners exercise caution when employing for safety critical systems?
Agile software techniques
In which phase of the System Architecture Definition should key safety functions and safety performance be captured?
Stakeholder Needs and Requirements Definition
What type of personnel drive safety performance according to the text?
Suitably Qualified and Experienced Personnel
When should safety practitioners be involved in the decision-making process according to the text?
When key decisions are made
Study Notes
- System safety engineering encompasses the engineering of socio-technical operational systems and management systems, with safety being an emergent property of the engineered system in its real operational environment.
- Safety management involves minimizing hazards through design, technical mitigations, or procedural controls to reduce likelihood or impact of accidents.
- Good system safety engineering requires a combination of qualified people, effective processes, appropriate governance, and culture.
- Acceptable safety levels vary across industries and countries, with definitions ranging from compliance with regulations to evaluating and mitigating identified hazards.
- Safety is an emergent property and cannot be guaranteed 100%, as hazards may be unknown or uneliminable.
- Most accidents result from multiple causal factors and serve as critical feedback on system safety in operation.
- Dependencies between hazards are important to recognize for effective safety decision-making.
- Hazardous situations can occur without system element failure due to design or implementation errors or misaligned mental models.
- Regulators assess safety risk in terms of both likelihood and severity of harm.
- Hazards can result from various sources including intrinsic, functional, socio-technical, and management/wider cultural factors.
Test your knowledge of system safety engineering, which focuses on engineering the system of interest, the wider socio-technical operational system, and the socio-technical management system. Explore the impact of usage, maintenance, and management on system safety and the criticality of aligning mental models of stakeholders.
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