(2) The look service temperature may be the coldest temperature for which a cylinder is acceptable. The required design and style support temperatures for every cryogenic liquid is as follows:
(iii) When size from the cylinder won't permit securing straight specimens, the specimens could be taken in any area or route and could be straightened or flattened chilly, by strain only, not by blows.
(1) Every single rigidity specimen will need to have a gauge length of two inches that has a width not exceeding just one and one particular-50 percent inches. Aside from the grip finishes, the specimen is probably not flattened. The grip finishes can be flattened to within just one particular inch of every conclude in the diminished portion.
(two) Cylindrical style cylinder patterns has to be of circumferentially welded or brazed building; longitudinally brazed or silver-soldered seams may also be permitted.
(1) Except or else stated, if a sample cylinder or specimen taken from loads of cylinders fails the prescribed check, then two more specimens should be chosen from the very same good deal and subjected to the prescribed take a look at. If either of those fails the exam, then all the great deal have to be rejected.
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(iii) For the objective of strain measurement, the Original pressure needs to be set although the specimen is under a worry of twelve,000 psi, as well as the pressure indicator reading has to be set within the calculated corresponding pressure.
(iii) The minimum amount check strain need to be taken care of at the least thirty seconds and adequately more time to be certain total growth. Any interior pressure applied immediately after heat-procedure and just before the official exam might not exceed ninety percent with the examination tension.
1 container taken at random from two hundred or fewer need to be hydrostatically tested to destruction. Rupture pressure needs to be provided as Portion website of the inspector's report.
A root bend take a look at specimen have to be faraway from the cylinder or welded exam plate used for the tensile examination specified in paragraph (m)(1) of the part. Specimens should be taken from throughout the longitudinal seam and needs to be prepared and tested in conformance with the requirements of CGA C-3.
(iii) Straight threads, obtaining a minimum of four engaged threads, to have restricted fit and calculated shear power at least 10 moments the exam strain of your container; gaskets necessary, suitable to stop leakage.
(ii) In using the “extension less than load” process, the full pressure (or “extension less than load”) comparable to the worry at which the 0.two per cent long term strain occurs may be determined with sufficient precision by calculating the elastic extension of your gauge length beneath correct load and adding thereto 0.
(ii) Taper threads need to be of the size not a lot less than as specified for American Conventional taper pipe threads.
(3) As a security precaution, if the manufacturer elects to produce this check prior to the hydrostatic exam, the company should structure the take a look at apparatus so which the tension is applied to the smallest location practicable, throughout the stage of closure, and so as to utilize the smallest attainable quantity of air or fuel.