Which color indicates the zone is appropriate for over pressure?

Which color indicates the zone is appropriate for over pressure?

• A. Green
• B. Blue
• C. Yellow
• D. Red

Answer: (A)

Color coding in damage control spaces tells you whether a space is suitable for maintaining an overpressure barrier. Green signifies that the zone is properly pressurized for overpressure operations and safe to enter and work in under those conditions, because the space is kept at a positive pressure relative to surrounding areas, helping to keep hazardous atmospheres out. Red generally indicates danger or non-entry conditions, yellow signals caution and the need for special procedures or PPE, and blue denotes other specific requirements. So green is the color that shows the zone is appropriate for overpressure.

Color coding in damage control spaces tells you whether a space is suitable for maintaining an overpressure barrier. Green signifies that the zone is properly pressurized for overpressure operations and safe to enter and work in under those conditions, because the space is kept at a positive pressure relative to surrounding areas, helping to keep hazardous atmospheres out. Red generally indicates danger or non-entry conditions, yellow signals caution and the need for special procedures or PPE, and blue denotes other specific requirements. So green is the color that shows the zone is appropriate for overpressure.