Reheat procedure is authorized for turned down cylinders. Subsequent thereto, cylinders need to move all prescribed exams being acceptable. Maintenance by welding or spinning just isn't licensed.
Cylinders should be manufactured making use of devices and procedures enough to make certain Just about every cylinder manufactured conforms to the necessities of this subpart.
(4) As a security precaution, Should the manufacturer elects to make this test ahead of the hydrostatic examination, the company must structure the test apparatus so the force is placed on the smallest space practicable, across the place of closure, and so as to utilize the smallest feasible volume of air or gasoline.
Cylinders needs to be produced using devices and procedures enough to make sure that Every cylinder generated conforms to the necessities of the subpart. No defect is permitted that is likely to weaken the completed cylinder appreciably.
(iv) On the metallic plate connected to the highest of the cylinder or lasting section thereof; enough Room must be remaining on the plate to offer for stamping at the very least 6 retest dates; the plate needs to be no less than one⁄sixteen-inch thick and needs to be connected by welding, or by brazing.
Reheat treatment of rejected cylinders is approved one time. Subsequent thereto, cylinders should go all prescribed assessments being appropriate.
(ii) One specimen has to be taken from both head on a cylinder when both of those heads are created of a similar material. However, if The 2 heads are created of differing materials, a specimen need to be taken from Every single head.
(4) Establish porosity of filling and tare weights; validate compliance of marking with prescribed needs; get hold of important copies of metal shell studies prescribed in paragraph (b) of this segment; and furnish full check studies essential by this specification to the person who has done the producer with the cylinders and, on request, to the purchaser.
(1) Each pressure specimen will need to have a gauge length of two inches which has here a width not exceeding 1 and one-half inches. Except for the grip finishes, the specimen might not be flattened. The grip ends may very well be flattened to within a person inch of each and every conclusion of the reduced portion.
(iv) All straight threads must have at the very least 6 engaged threads, a decent in good shape, and a factor of security in shear of not less than 10 within the examination pressure with the cylinder. Shear tension need to be calculated by using the appropriate thread shear place in accordance with NBS Handbook H-28.
(two) A spun cylinder is a single wherein an finish closure within the finished cylinder has been welded through the spinning method.
(iii) Over a cylindrical part of the shell that extends further than the recessed base on the cylinder constituting an integral and non-tension Section of the cylinder.
Reheat therapy is licensed for turned down cylinders. Subsequent thereto, cylinders need to pass all prescribed exams to get suitable. Restore by welding or spinning will not be authorized.
Cylinders needs to be manufactured working with equipment and processes satisfactory to make certain Every cylinder developed conforms to the requirements of this subpart. No defect is permitted that is likely to weaken the finished container appreciably.