Eddy Current Test or Visual Eddy Test

Eddy-current testing is an electromagnetic testing method used in nondestructive testing (NDT) making use of electromagnetic induction to detect neck cracks (also known as Sustained Load Cracks) in 6351 aluminum cylinders made by Walter Kidde and Luxfer. Luxfer also manufactured cylinders for US Divers (USD) and Dacor. Sustained Load Cracks have been known to fail violently when being filled doing severe damage to the fill station operator and the dive shop.

An Eddy Current test is required by law at time of the hydrostatic test and should be done during every visual inspection. When the hydrostatic retest facility does an eddy current test they will stamp a VE after the retest stamp