If an SCBA regulator free-flows in the field, what is the correct sequence of actions?

If an SCBA regulator free-flows in the field, what is the correct sequence of actions?

• A. Ignore the flow and keep using the regulator until you finish.
• B. Open the cylinder valve to stop air, move to safety, and tag out for repair.
• C. Close the cylinder valve to stop air, move to safety, and tag out for repair.
• D. Remove the mask and disconnect the regulator immediately.

Answer: (C)

When an SCBA regulator free-flows, the first priority is to stop the air supply at the source, then get to a safe location, and finally tag the unit out for repair. Closing the cylinder valve immediately stops the air from flowing, which preserves the remaining air you have and prevents further loss. Once the flow is stopped, you can move to a safe area where you’re not exposed to hazards, and then tag the regulator out so maintenance can fix it and prevent its use until it’s repaired. Why the other actions aren’t appropriate: continuing to use the regulator despite a free-flow wastes air and can leave you without breathing air in a dangerous environment. Opening the cylinder valve would increase the flow, not stop it, so it makes the problem worse. Removing the mask and disconnecting the regulator immediately would cut off your air supply and leave you at risk; stay with the mask, stop the flow, move to safety, then isolate the equipment for repair.

When an SCBA regulator free-flows, the first priority is to stop the air supply at the source, then get to a safe location, and finally tag the unit out for repair. Closing the cylinder valve immediately stops the air from flowing, which preserves the remaining air you have and prevents further loss. Once the flow is stopped, you can move to a safe area where you’re not exposed to hazards, and then tag the regulator out so maintenance can fix it and prevent its use until it’s repaired.

Why the other actions aren’t appropriate: continuing to use the regulator despite a free-flow wastes air and can leave you without breathing air in a dangerous environment. Opening the cylinder valve would increase the flow, not stop it, so it makes the problem worse. Removing the mask and disconnecting the regulator immediately would cut off your air supply and leave you at risk; stay with the mask, stop the flow, move to safety, then isolate the equipment for repair.