CAS CAS Automation Specialist Safety & Standards

Question 1

Which IEC standard defines functional safety requirements for electrical/electronic/programmable electronic safety-related systems?

Accepted Answer

IEC 61508

Answer

IEC 61508 is the foundational international standard for functional safety of E/E/PE safety-related systems.

Question 2

What does SIL stand for in the context of industrial automation safety?

Accepted Answer

Safety Integrity Level

Answer

SIL (Safety Integrity Level) is a measure of risk reduction provided by a safety function, defined in IEC 61508.

Question 3

Which OSHA regulation applies most directly to lockout/tagout procedures for energy control in automated machinery?

Accepted Answer

29 CFR 1910.147

Answer

29 CFR 1910.147 governs the control of hazardous energy (lockout/tagout) for general industry.

Question 4

In a Safety Instrumented System (SIS), what is the purpose of the final element?

Accepted Answer

To take action to bring the process to a safe state

Answer

The final element (e.g., a valve or motor contactor) executes the corrective action prescribed by the safety logic.

Question 5

What is the primary purpose of a Safety Integrity Level (SIL) verification study?

Accepted Answer

To confirm that a safety function meets its required risk reduction

Answer

SIL verification confirms that the designed safety function achieves the required probability of failure on demand (PFD) target.

(CAS) Certified Automation Specialist Practice Test