During the emergency EOT procedure, which action should be repeated until the HEU indicates vented pressure?

During the emergency EOT procedure, which action should be repeated until the HEU indicates vented pressure?

• A. Lift the red cover of the EMERGENCY SWITCH and activate the emergency valve on the EOT
• B. Check the HEU indicator
• C. Monitor the EOT venting
• D. Notify the supervisor

Answer: (A)

The action to lift the red cover and activate the emergency valve on the EOT must be repeated until the HEU shows vented pressure. In an emergency venting scenario, you need to actively trigger the emergency valve so pressure is released step by step. The HEU indicator provides the confirmation that venting has occurred; you keep performing the valve activation cycles until that reading confirms vented pressure. Merely checking the HEU, watching the venting, or notifying someone does not accomplish venting by itself, though those steps may accompany the process. The key is repeatedly engaging the emergency valve under the red cover until the system indicates it is fully vented.

The action to lift the red cover and activate the emergency valve on the EOT must be repeated until the HEU shows vented pressure. In an emergency venting scenario, you need to actively trigger the emergency valve so pressure is released step by step. The HEU indicator provides the confirmation that venting has occurred; you keep performing the valve activation cycles until that reading confirms vented pressure. Merely checking the HEU, watching the venting, or notifying someone does not accomplish venting by itself, though those steps may accompany the process. The key is repeatedly engaging the emergency valve under the red cover until the system indicates it is fully vented.