Question 954 Deck General

The correct answer is C) After ventilation and testing, and the tank is found safe for entry, someone should standby at the tank entrance while you are inside. This is the correct answer because it aligns with best safety practices for entering a water ballast tank that has been sealed for a long time. When a tank has been sealed, potentially hazardous gases can build up inside. After proper ventilation and testing to confirm the tank is safe for entry, it is critical to have a standby person at the entrance to monitor the situation and provide assistance if needed. This is a common safety requirement for confined space entry. The other options are either too restrictive (wearing a gas mask) or do not fully address the need for a standby person during the entry.