(two) The design provider temperature is the coldest temperature for which a cylinder is suitable. The needed structure service temperatures for each cryogenic liquid is as follows:
(iii) If due to welded attachments on the very best head There's inadequate floor from which to take a specimen, it might be taken from a consultant head of the same warmth cure since the examination cylinder.
(1) Every single pressure specimen will need to have a gauge length of two inches by using a width not exceeding a person and a person-fifty percent inches. Except for the grip ends, the specimen may not be flattened. The grip finishes could be flattened to within a person inch of each and every stop of your decreased area.
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(i) The word “spun” or “plug” have to be positioned close to the DOT specification marking when an stop closure within the concluded cylinder has actually been welded by the spinning course of action, or effected by plugging.
The inspector shall prepare a report that contains, in a least, the applicable information mentioned in CGA C-11. Any extra facts or markings that are demanded via the relevant specification need to be demonstrated over the check report. The signature on the inspector about the studies certifies the procedures of manufacture and warmth procedure of cylinders ended up noticed and located satisfactory.
(ii) In using the “extension below load” method, the entire pressure (or “extension less than load”), comparable to the tension at which the 0.2 % long-lasting strain occurs might be decided with ample accuracy by calculating the elastic extension of your gauge size less than correct load and introducing thereto 0.
(4) As a security precaution, If your company elects to produce this test before the hydrostatic exam, the company really should structure the check equipment so which the force is applied to the smallest area practicable, round the issue of closure, and in order to make use of the smallest feasible quantity of air or gas.
(three) Without spending a dime standing cylinders, the base thickness have to be not less than two occasions the least wall thickness together the road of Make contact with in between the cylinder base and the floor once the cylinders are while in the vertical situation.
(i) The remaining cylinders in Every single whole lot has to be tested by the evidence pressure h2o-jacket or direct growth test process as prescribed in CGA C-one. The minimal check strain have to be managed for the precise timeframe plus the tests machines have to be bar 178 rtp calibrated as prescribed in CGA C-1.
(one) Openings are permitted in heads only. They must be circular and may not exceed 3 inches in diameter or a single 3rd of the cylinder diameter, whichever is significantly less. Every opening within the cylinder has to be offered with a fitting, manager or pad, both integral with, or securely hooked up to, the cylinder physique by fusion welding.
(ii) In utilizing the “extension beneath load” strategy, the entire pressure (or “extension under load”) similar to the strain at which the 0.two % long term pressure takes place can be established with ample precision by calculating the elastic extension on the gauge length less than suitable load and incorporating thereto 0.
(ii) Just one specimen have to be taken from possibly head over a cylinder when both heads are created of a similar materials. Even so, if The 2 heads are created of differing products, a specimen must be taken from Each and every head.
(ii) A single cylinder need to be picked from Each and every large amount and be hydrostatically pressure examined to destruction. If this cylinder bursts beneath five (five) periods the company pressure, then two supplemental cylinders from your exact same lot since the Beforehand analyzed cylinder has to be selected and subjected to this test.