ISO 26262-5:2018: Product development at the hardware level

This course is about ISO 26262-4: Product development at the system level. All relevant clauses of this part of ISO 26262 are explained in the course. The following clauses are considered:

• Clause 6: Specification of hardware safety requirements

• Clause 7: Hardware design

• Clause 8: Evaluation of hardware architectural metrics

• Clause 9: Evaluation of the safety goal violations due to random hardware failures

• Clause 10: Hardware integration and testing

The following aspects are considered in Clause 6: Specification of hardware safety requirements:

• The ISO 26262 V-model for the hardware phase

• Refinement of the Hardware Software Interface (HSI)

• Characteristics and attributes for the hardware safety requirements

The following aspects are considered in Clause 7: Hardware design:

• Relevant aspects for creation of the hardware design

The following aspects are considered in Clause 8: Evaluation of hardware architectural metrics:

• Hardware fault classification (Safe Fault, Single Point Fault, Residual Fault, Dual Point Fault, Multiple Point Faults, Latent Fault)

• Examples for several hardware fault categories

• Decision Tree for fault classification according to ISO 26262

• Calculation of the Single Point Fault Metric (SPFM) and the Latent Fault Metric (LFM)

The following aspects are considered in Clause 9: Evaluation of the safety goal violations due to random hardware failures:

• Evaluation of the safety goal violations due to random hardware failures

• Calculation of the Probabilistic Metric of random Hardware Failures (PMHF)

The following aspects are considered in Clause 10: Hardware integration and testing:

• Methods to derive test cases

• Test methods

The course includes an exercise for determination of the hardware metrics SPFM, LFM and PMHF.

A possible solution for the exercise is presented in a video.

In the first part of the course you get a quick overview of all ISO 26262:2018 parts. Also the term functional safety is explained in the first part of the course. And you get an overview of functional safety standards for other industries, such as nuclear plants or process industry.

In case you already have some basic knowledge about functional safety and ISO 26262 the first part of the course is optional and you can skip it.