(2) The design support temperature will be the coldest temperature for which a cylinder is ideal. The needed structure provider temperatures for each cryogenic liquid is as follows:
(ii) The minimum exam tension has to be preserved a minimum of 30 seconds and sufficiently longer to make sure comprehensive enlargement. Any inside tension applied just after warmth-remedy and former towards the Formal test might not exceed ninety % of your check pressure.
A Actual physical check have to be carried out to find out generate energy, tensile energy, and elongation as follows:
Cylinders has to be created making use of devices and procedures ample to ensure that Every cylinder generated conforms to the necessities of this subpart. No defect is permitted that is likely to weaken the concluded cylinder appreciably.
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(3) Every single check cylinder must withstand flattening to nine times the wall thickness without the need of cracking. In the event the alternate bend exam is applied, the examination specimens must continue to be uncracked when bent inward all over a mandrel from the way of curvature with the cylinder wall right until the interior edges are in a distance aside not increased as opposed to diameter in the mandrel.
(four) Ascertain porosity of filling and tare weights; verify compliance of marking with prescribed requirements; acquire vital copies of metal shell reviews; and furnish total reviews required by this specification to the person who has done the manufacture of your cylinders and, on ask for, to your purchaser.
(one) Welding or brazing is licensed for that attachment of neckrings and footrings which happen to be non-force pieces, and only to the tops and bottoms of cylinders possessing a company tension of five hundred psig or considerably less.
(3) For free standing cylinders, The bottom thickness needs to be at the least two times the least wall thickness together the line of Call in between the cylinder base and the floor once the cylinders are during the vertical place.
A root bend examination specimen must be faraway from the cylinder or welded take a look at plate useful for the tensile take a look at laid out in paragraph (m)(1) of this part. Specimens has to be taken from through the longitudinal seam and have to be organized and analyzed in conformance with the necessities of CGA C-three.
Cylinders must be made utilizing gear and procedures suitable to make certain that Just about every cylinder made conforms to the necessities of this subpart. No defect is acceptable that is probably going to weaken the concluded cylinder appreciably.
S = bar 178 Mc/I (iii) To compute the most longitudinal tensile worry as a result of hydrostatic examination stress, the following method must be utilized:
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(one) Markings must be stamped plainly and permanently on shoulder or major head of jacket or on the forever connected plate or head protective ring.