06. Confirmation Measures
L2 10 L Confirmation Measures
Confirmation Measures Purpose
Confirmation measures serve two purposes:
- that a functional safety project conforms to ISO 26262, and
- that the project really does make the vehicle safer.
The people who carry out confirmation measures need to be independent from the people who actually developed the project.
Confirmation Measures Definitions
Confirmation review
Ensures that the project complies with ISO 26262. As the product is designed and developed, an independent person would review the work to make sure ISO 26262 is being followed.
Functional safety audit
Checking to make sure that the actual implementation of the project conforms to the safety plan is called a functional safety audit.
Functional safety assessment
Confirming that plans, designs and developed products actually achieve functional safety is called a functional safety assessment.
You will not be required to write out a full confirmation measure section in the final project's safety plan; but you will need to show that you understand the purpose of the confirmation measures.
Levels of Independence
The person who developed a document, plan, design or product should not be the same person who carries out a confirmation measure; confirmation measures require independence.
ISO 26262 requires different levels of independence depending on what part of the functional safety lifecycle is under review.
For example, the department or company who develops a Hazard Analysis and Risk Assessment (HARA) needs to be completely separate from the department or company who makes sure the HARA was carried out according to ISO 26262. That’s because HARA is the critical first step in identifying high risk situations.
On the other hand, a person who develops a system that is rated low risk can be on the same team as the person who reviews the system for ISO 26262 compliance.
Quiz: DIA (Development Interface Agreement)
DIA
SOLUTION:
- Clarify the responsibilities of the different parties involved in a functional safety project
- Describe the work products that each company will provide
- Help avoid disputes between companies
- Clarifies who will be responsible for any safety issues in post-production
Quiz: Confirmation Measures
Confirmation Measures