(i) The remaining cylinders in Every great deal has to be examined with the evidence tension, drinking water-jacket, or direct enlargement check method as prescribed in CGA C-one. The bare minimum check tension need to be managed for the specific timeframe along with the tests devices have to be calibrated as prescribed in CGA C-1.
Mechanical tests should be executed to find out produce toughness, tensile power, elongation to be a percentage, and reduction of region of fabric being a share, as follows:
(one) A force, close to similar to but not a lot less than the service pressure, must be applied to just one side in the finished base more than a region of at the least one⁄sixteen of the overall space of the bottom although not less than 3⁄4 inch in diameter, such as the closure, for a minimum of a person moment, during which era the other side of the bottom exposed to pressure have to be covered with water and closely examined for indications of leakage.
Normal taper pipe threads demanded in all openings. The duration from the opening will not be less than as specified for American Common pipe threads; tapped to gauge; clean Slice, even, and with out checks.
Restore of welded seams by welding previous to method treatment method is approved. Subsequent thereto, containers have to be heat addressed and move all prescribed tests.
Cylinder heads, bodies or the completed cylinder, fashioned by drawing or urgent, needs to be uniformly and properly heat taken care of by an relevant approach revealed in desk one of appendix click here A of this section right before assessments.
(i) Nonflammable cryogenic liquids. Cylinders intended for use within the transportation of nonflammable cryogenic liquid need to have an outer jacket made from steel or aluminum.
(one) All seams of the cylinder should be fusion welded. A means has to be supplied for carrying out entire penetration from the joint. Only butt or joggle butt joints for the cylinder seams are approved. All joints inside the cylinder need to have moderately real alignment.
(ii) In utilizing the “extension below load” process, the entire strain (or “extension beneath load”), comparable to the pressure at which the 0.two percent everlasting strain occurs could be decided with enough accuracy by calculating the elastic extension in the gauge length under correct load and adding thereto 0.
Besides the necessities of § 178.35, the inspector's report for the Bodily test report, must point out the typical benefit for 3 specimens and also the minimum amount value for just one specimen for every large amount variety.
Designations and restricting chemical compositions of steel approved by this specification need to be as shown in desk 1 in paragraph (o) of the portion.
A “root” bend test specimen need to be Lower in the cylinder or welded test plate, utilized for the tensile examination specified in paragraph (l)(one) of this section and from another seam or equal welded examination plate if the seam is welded by a procedure different from that used for the foremost seam.
(i) A gauge size of no less than 24 occasions the thickness which has a width not about 6 times the thickness. The specimen, special of grip finishes, is probably not flattened. Grip ends can be flattened to within one particular inch of each and every finish in the lessened portion. When size of cylinder isn't going to permit securing straight specimens, the specimens could be taken in almost any place or path and may be straightened or flattened cold by stress only, not by blows.
Notwithstanding the variation supplied In this particular paragraph, each container must normally conform to your DOT 2Q container in accordance with § 178.33a. The following circumstances also use underneath Variation two—