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 61131-3

Answer

IEC 62443

Answer

IEC 60870

Question 2

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

Accepted Answer

Safety Integrity Level

Answer

System Integration Level

Answer

Sequential Interlock Logic

Answer

Signal Interface Layer

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 1910.119

Answer

29 CFR 1926.417

Answer

29 CFR 1910.303

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

To detect a hazardous condition

Answer

To process the safety logic

Answer

To provide operator alerts only

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

To select the least expensive safety device

Answer

To certify operator training programs

Answer

To validate network cybersecurity

Question 6

Which document defines the process hazard analysis (PHA) lifecycle stage in the ISA 84 / IEC 61511 standard for process industry SIS?

Accepted Answer

The Safety Requirements Specification (SRS)

Answer

Layer of Protection Analysis (LOPA)

Answer

Hazard and Operability Study (HAZOP)

Answer

Functional Safety Assessment (FSA)