Which type of SCUBA cylinder must be visually inspected for safety at least once every 12 months?

Open-circuit SCUBA cylinders are required to undergo a visual inspection for safety at least once every 12 months to ensure that they are in good working condition and free from defects. This regular inspection is a critical part of the maintenance process, as it helps identify any potential issues, such as corrosion, dents, or cracks, that might compromise the safety of the diver.

This requirement is outlined in industry standards and regulations to ensure the safety of divers, as open-circuit systems are the most common type used for recreational diving. The visual inspection provides assurance that the cylinder will function properly and safely during dives.

While other types of cylinders, like closed-circuit or composite cylinders, may have their own specific inspection requirements, the open-circuit cylinders have the standardized mandate for annual visual inspections as part of their maintenance protocol. Regular maintenance and inspections are vital for safety in diving, and following these guidelines helps ensure that divers can rely on their equipment while underwater.