How are alarms treated in CSOSS sequences?

• A. Alarms indicate discrepancies that require bypassing standard procedures.
• B. Alarms indicate discrepancies that may require stepping into casualty procedures or initiating safety checks and sequence aborts if needed.
• C. Alarms only affect routine maintenance.
• D. Alarms automatically stop all actions.

Answer: (B)

Alarms in CSOSS sequences act as signals of abnormal conditions that require careful response, not simply a routine notification. When an alarm occurs, it flags a discrepancy that may necessitate stepping into casualty procedures or performing safety checks, and potentially aborting the current sequence if the risk is too high. This means you assess the alarm, follow any casualty actions that apply, verify relevant safety interlocks and system status, and decide whether to continue, modify, or stop the operation. The action isn’t to bypass procedures or to treat alarms as only maintenance items, and it isn’t that alarms automatically halt everything; the appropriate response depends on the severity and the guidance within the CSOSS sequence.