Reheat therapy is authorized for turned down cylinders. Even so, Each individual reheat treated cylinder have to subsequently go all the prescribed checks. Fix by welding isn't authorized.
(two) Each individual opening in a spherical kind of cylinder need to be provided which has a fitting, manager, or pad of weldable metal securely connected towards the cylinder by fusion welding.
A Bodily examination needs to be carried out to find out generate strength, tensile strength, and elongation as follows:
(ii) A single cylinder have to be picked from Every lot and become hydrostatically pressure analyzed to destruction. If this cylinder bursts under five (5) situations the provider force, then two further cylinders in the similar lot since the Earlier tested cylinder have to be selected and subjected to this test.
A specimen must be removed from just one cylinder of each and every great deal of two hundred or less, or welded exam plate. The welded check plate has to be of on the list of heats while in the wide range of 200 or less which it represents, in a similar condition and around precisely the same thickness given that the cylinder wall other than that in no scenario ought to it's of a lesser thickness than that demanded for a quarter dimension Charpy impact specimen. The weld should be produced by the identical treatments and subjected to precisely the same warmth cure as the key weld over the cylinder.
(iii) When dimensions from the cylinder does not permit securing straight specimens, the specimens might be taken in almost any location or way and will be straightened or flattened chilly, by tension only, not by blows.
Tension-retaining content must be identified by any suitable technique that doesn't compromise the integrity on the cylinder. Plates and billets for hotdrawn cylinders have to be marked with the warmth variety.
The completed containers has to be uniformly and appropriately heat-handled prior to checks. Warmth-therapy of containers in the authorized analysis needs to be as follows:
Finishes: The best of the container has to be intended using a force reduction program consisting of radial scores on the top seam(s). The underside with the container have to be meant to buckle in a pressure greater compared to the tension at which the highest buckles and vents.
(i) The remaining cylinders in each great deal must be tested from the evidence pressure water-jacket or direct enlargement test approach as prescribed in CGA C-one. The minimal check force have to be managed for the precise timeframe along with the tests equipment needs to be calibrated as prescribed in CGA C-one.
The minimum wall thickness from the cylinder should be such the calculated wall tension in the least essential take a look at force might not exceed the least price of the following:
Heads fashioned by drawing or pressing have to be uniformly and correctly heat treated ahead of checks. Cylinders with integral shaped heads or bases have to be subjected to your normalizing Procedure.
Cylinders with bottoms closed in by spinning have to be subjected to some leakage test by environment the inside air or fuel force to not lower than the support pressure. Cylinders which leak needs to be turned down.
(2) If an indication from the identify in the company or other identification with the packaging as specified through the capable authority is required, the name get more info and handle or symbol from the maker or even the acceptance company certifying compliance Along with the UN normal must be entered. Symbols, if applied, should be registered While using the Affiliate Administrator.