Which item is not typically addressed in an overall safety plan per IEC61508?

• A. Functional safety management procedures.
• B. Qualifications of personnel for lifecycle phases.
• C. A brief description of validation and testing activities.
• D. Equipment cost measures.

Answer: (D)

The item that is not typically addressed in an overall safety plan per IEC61508 is related to cost measures of equipment. The standard focuses primarily on the safety lifecycle and the processes that need to be in place to ensure that safety is maintained throughout the lifecycle of a safety-related system.

Functional safety management procedures are critical for outlining how safety is to be managed. They ensure that there are clear guidelines and frameworks for identifying and managing safety risks.

Qualifications of personnel for lifecycle phases relate to ensuring that individuals involved in various phases of the safety lifecycle possess the necessary skills and expertise, which is essential for maintaining a high standard of safety throughout the project.

A brief description of validation and testing activities is also crucial, as verifying that systems meet their specified safety requirements through proper testing is a key part of assuring functional safety.

In contrast, while cost measures can be a consideration during the planning of projects and budgeting, they do not directly pertain to the safety-centric focus of IEC61508 standards, which prioritize functional safety and risk management over financial considerations.