(iii) Make copies of all penned notifications readily available for inspection by a agent in the Department.
(2) Verify compliance of cylinder shells with all shell prerequisites; inspect inside prior to closing in both of those ends; verify heat treatment method as appropriate; obtain all samples for all exams and for Test analyses; witness all assessments; verify threads by gauge; report volumetric potential and bare minimum thickness of wall noted.
Open up-hearth or electric metal of uniform top quality should be employed. A warmth of metal designed below desk 1 in this paragraph (b), Test chemical analysis of and that is somewhat outside of the desired array, is acceptable, if satisfactory in all other respects, provided the tolerances demonstrated in table two In this particular paragraph (b) are usually not exceeded besides as permitted through the Associate Administrator. The next chemical analyses are approved:
(two) Cylindrical kind cylinder types need to be of circumferentially welded or brazed building; longitudinally brazed or silver-soldered seams are permitted.
(one) Unless of course in any other case mentioned, if a sample cylinder or specimen taken from many cylinders fails the prescribed take a look at, then two more specimens has to be chosen from your similar large amount and subjected on the prescribed check. If either of these fails the test, then the complete good deal must be rejected.
(i) The remaining cylinders in each large amount has to be analyzed with the evidence pressure water-jacket or direct expansion take a look at strategy as prescribed in CGA C-1. The bare minimum test tension should be managed for the precise timeframe and the tests tools must be calibrated as prescribed in CGA C-1.
Strain-retaining product needs to be determined by any appropriate system that doesn't compromise the integrity of your cylinder. Plates and billets for hotdrawn cylinders has to be marked with the heat amount.
(4) As a safety precaution, In the event the company elects to generate this exam before the hydrostatic exam, the maker should really structure the test apparatus so that the force is applied to the smallest area practicable, throughout the stage of closure, and in order to utilize the smallest achievable volume of air or gasoline.
(4) If the cylinder floor just isn't at first free of charge with the defects, the area may very well be machined or if not taken care of to reduce these defects presented the minimum amount wall thickness is managed.
(one) Circumferential seams should be by brazing only. Heads needs to be attached to shells through the lap brazing method and ought to overlap not below 4 instances the wall thickness. Brazing material will need to have a melting stage of not under 1000 °F.
The minimum wall thickness must be these which the wall pressure within the minimum amount specified examination pressure will not exceed 80 % of the minimum amount generate toughness nor exceed sixty seven percent of your minimum ultimate tensile power as verified by Actual physical checks in paragraph (i) of the portion.
A “root” bend test specimen need to be Minimize in the cylinder or welded test plate, employed for the tensile check laid out in paragraph (l)(1) of the segment and from any other seam or equal welded take a look at plate if the seam is welded by a method diverse from that employed for the key seam.
(ii) Just one specimen need to be taken from possibly head on a cylinder when both equally heads are created of a similar material. Even so, if The 2 heads are made of differing components, a specimen have to be taken from Each and every head.
(ii) The filling material has here to be uniform in good quality and free of voids, other than that a properly drilled in to the filling material beneath the valve is approved if the effectively is crammed with a cloth of this sort of style that the capabilities from the filling product aren't impaired;