Under what circumstances should a scuba cylinder be visually inspected?

How often should I take my scuba cylinder to be visually inspected by my dive Centre?

Annual Dive Tank Inspection and Testing

5) require that your scuba diving tank be visually inspected and pressure tested at a certified testing station once per year.

Why is cylinder inspection necessary?

The cylinder is inspected for dents, cracks, gouges, cuts, bulges, laminations and excessive wear, heat damage, torch or electric arc burns, and corrosion damage.

What is proper care for scuba cylinder?

Always block or secure your tank so it can’t fall over easily or roll around, which can damage it, other equipment or you. Besides rinsing your cylinder and valve with fresh water and storing it in a cool place, don’t allow it to completely empty – always store it with air inside to keep moisture out.

What pressure are scuba tanks tested to?

A hydrostatic test involves pressurising the cylinder to its test pressure (usually 5/3 or 3/2 of the working pressure) and measuring its volume before and after the test.

When should a crankshaft always be carefully inspected?

Journals must be carefully inspected and measured for wear, out-of-roundness, taper, hour glass or barrel distortion. If worn beyond specifications (typically more than . 001″ of specified diameter), the journals must be reground to undersize and polished to restore the bearing surface.

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What do you inspect in the cylinder head?

Cylinder Head

Use a bright light to inspect for cracks, and investigate any suspicious areas with a magnifying glass or microscope. Carbon deposits must be cleaned from the inside of the head, and paint must be removed from the outside for this inspection.