In the TEM framework, which option corresponds to the meaning labeled B?

In the TEM framework, which option corresponds to the meaning labeled B?

• A. Actively monitor and assess the potential for damage
• B. Balance available barriers to avoid and trap errors
• C. Communicate threats and intentions timely and effectively
• D. Detect and isolate system failures

Answer: (B)

In TEM, barriers are the lines of defense that stop errors from turning into unsafe actions. The idea of balancing the available barriers to avoid and trap errors captures this practice: use multiple, complementary defenses so that if one barrier misses an error, others catch or prevent it before harm occurs. These barriers can be procedural (checklists, SOPs), technical (automation, alarms), or human (team cross-checks, clear communication), and they work best when they’re independent and coordinated rather than relying on a single safeguard. The other descriptions touch on related safety activities—monitoring potential damage, communicating threats, or detecting faults—but they don’t describe the defense-in-depth concept of balancing barriers to prevent and trap errors.

In TEM, barriers are the lines of defense that stop errors from turning into unsafe actions. The idea of balancing the available barriers to avoid and trap errors captures this practice: use multiple, complementary defenses so that if one barrier misses an error, others catch or prevent it before harm occurs. These barriers can be procedural (checklists, SOPs), technical (automation, alarms), or human (team cross-checks, clear communication), and they work best when they’re independent and coordinated rather than relying on a single safeguard. The other descriptions touch on related safety activities—monitoring potential damage, communicating threats, or detecting faults—but they don’t describe the defense-in-depth concept of balancing barriers to prevent and trap errors.