(i) The remaining cylinders in Every great deal has to be examined because of the evidence stress, drinking water-jacket, or direct enlargement take a look at technique as prescribed in CGA C-1. The minimal exam pressure need to be preserved for the precise timeframe plus the testing equipment has to be calibrated as prescribed in CGA C-1.
(ii) In using the “extension beneath load” technique, the overall pressure (or “extension beneath load”) comparable to the worry at which the 0.2 percent long lasting pressure occurs may be identified with enough accuracy by calculating the elastic extension on the gauge length less than proper load and introducing thereto 0.
The completed cylinders need to be uniformly and correctly heated previous to tests. Warmth remedy of the cylinders on the approved Examination should be as follows:
(ii) The porous filling content have to be uniform in high quality and freed from voids, except that a very well drilled in to the filling materials beneath the valve is licensed Should the perfectly is crammed with a fabric of this kind of variety that the capabilities from the filling materials aren't impaired;
Cylinders have to be created employing machines and processes enough to make certain Every cylinder created conforms to the necessities of this subpart. No fissure or other defects is permitted that is probably going to weaken the finished cylinder appreciably. A reasonably clean and uniform area finish is necessary. If not initially absolutely free from such defects, the area might be machined or in any other case handled to reduce these defects.
(one) Each individual cylinder should be uniformly and correctly heat taken care of just before check by the applicable method shown in desk 1 of appendix A to this component. Warmth treatment have to be achieved In fact forming and welding functions, apart from that when brazed joints are made use of, warmth therapy must observe any forming and welding functions, but may be completed just before, for the duration of or once the brazing operations (see paragraph (m) of the part for weld repairs).
(iii) For the objective of strain measurement, the Original pressure should be set whilst the specimen is under a strain of 12,000 psi, as well as the pressure indicator looking through has to be established in the calculated corresponding pressure.
(3) A plugged cylinder is a single wherein a everlasting closure in the bottom of a finished cylinder has actually been effected by a plug.
A Bodily check need to be performed to ascertain generate energy, tensile strength, elongation, and reduction of place of fabric as follows:
(i) The remaining cylinders in Each individual ton have to be tested through the proof pressure water-jacket or direct enlargement test system as prescribed in CGA C-one. The minimum check tension must be managed for the particular timeframe as well as the tests gear have to be calibrated as prescribed in CGA C-1.
(iii) The minimum examination stress need to be maintained at least 30 seconds and sufficiently for a longer period to ensure total enlargement. Any interior pressure used right after warmth-treatment method and just before the Formal check might not exceed ninety % of your examination pressure.
Content have to be identified by any ideal method besides that plates and billets For warm-drawn cylinders need to be marked with warmth amount.
Cylinders have to be created applying devices and processes satisfactory to ensure that Every cylinder produced conforms to the necessities of this subpart. No fissure or other defect is permitted that is probably going to weaken get more info the finished container appreciably. The overall surface complete may not exceed a roughness of 250 RMS. Particular person irregularities including attract marks, scratches, pits, etc., should be held to some bare minimum in step with fantastic higher anxiety stress vessel manufacturing procedures.
(ii) The filling content has to be uniform in quality and freed from voids, besides that a perfectly drilled to the filling product beneath the valve is authorized When the well is stuffed with a fabric of such kind that the features from the filling materials usually are not impaired;