Within what timeframe will alarm maintenance personnel respond for major malfunctions dealing with PL 1 & 2 resources?

Within what timeframe will alarm maintenance personnel respond for major malfunctions dealing with PL 1 & 2 resources?

• A. Within 2 hours
• B. Within 4 hours
• C. Within 24 hours
• D. Within 1 hour

Answer: (D)

For high-priority alarm systems, issues with PL 1 and PL 2 resources are considered safety-critical and require rapid on-site action. When a major malfunction affects these resources, the goal is to restore reliable alarm signaling as quickly as possible to support operators and prevent unsafe conditions. Therefore, the expected maintenance response time is within one hour. This tight window ensures that critical alarms remain available and that diagnostic work can begin promptly to minimize downtime and risk. The other options—2 hours, 4 hours, or 24 hours—do not provide the swift action needed for safety-critical systems, where delays can lead to missed alarms or extended exposure to hazardous conditions.

For high-priority alarm systems, issues with PL 1 and PL 2 resources are considered safety-critical and require rapid on-site action. When a major malfunction affects these resources, the goal is to restore reliable alarm signaling as quickly as possible to support operators and prevent unsafe conditions. Therefore, the expected maintenance response time is within one hour. This tight window ensures that critical alarms remain available and that diagnostic work can begin promptly to minimize downtime and risk. The other options—2 hours, 4 hours, or 24 hours—do not provide the swift action needed for safety-critical systems, where delays can lead to missed alarms or extended exposure to hazardous conditions.