Certification of the gas cylinders
The overwhelming majority of all gas cylinders’ defects, that disabled the using of the gas cylinders, may be diagnosed by the user by visual inspection on the spot. But some of the defects, like variance between the actual weight and capacity of the gas cylinder from the standard indicators, pressure level and some other indices may be checked only during the specific tests.
Geometry defects means the visual defects of the body frame of the gas cylinder (compression marks, dints, swellings, blisters, ballooning, shape changings).
Gas cylinder with the life-expired stamp or without any stamp
Discoloration or absence of colour labeling of the gas cylinders.
Defect isolation valve or the globe valve (checked by the soap solution bubble test)