(ii) Taper threads should be of a length not lower than that specified for American Normal taper pipe threads.
(iv) On a plate hooked up to the best on the cylinder or lasting portion thereof; adequate Area should be remaining over the plate to offer for stamping at the least six retest dates; the plate must be at least one⁄sixteen-inch thick and need to be connected by welding at a temperature of 1,a hundred °File, through all edges in the plate.
(i) Assuming the cylinder would be to be supported horizontally at its two finishes only and to be uniformly loaded in excess of its total size consisting of the load for each device of duration of the straight cylindrical part full of h2o and compressed to the desired exam force; the sum of two times the most tensile worry in the bottom fibers because of bending, moreover that in exactly the same fibers (longitudinal worry), resulting from hydrostatic test strain might not exceed eighty per cent in the minimum produce toughness in the metal at these types of optimum tension. Wall thickness have to be improved when necessary to fulfill the prerequisite.
Marking have to be done by stamping in the metallic with the cylinder. All markings has to be legible and Found on a shoulder.
Strain-retaining materials has to be recognized by any acceptable approach that doesn't compromise the integrity in the cylinder. Plates and billets for hotdrawn cylinders has to be marked with the heat amount.
(ii) Getting a certified chemical Investigation from the material or cylinder maker for each soften, or Forged of material; or
(iii) For the goal of strain measurement, the Preliminary pressure needs to be set even though the specimen is below a worry of twelve,000 psi, as well as the pressure indicator looking at has to be set at the calculated corresponding pressure.
(B) With info specifying the kind(s) and dimensions on the closures, which includes gaskets and another components required making sure that the packaging is able to efficiently passing the applicable effectiveness tests. This facts have to contain any strategies to generally be adopted, which include closure instructions for interior packagings and receptacles, to properly assemble and close the packaging for the goal of avoiding leakage in transportation.
A specimen need to be Lower from just one cylinder of each and every number of two hundred or less, or welded test plate. The specimen must be taken from across the significant seam and should be ready and tested in accordance with and should meet the necessities of CGA Pamphlet C-three.
(one) By very best appliances and strategies. No defect is acceptable that is likely to weaken the concluded container appreciably. A reasonably clean and uniform area end is necessary.
Cylinders must be produced working with gear and processes enough to make sure that Every single cylinder manufactured conforms to the requirements of the subpart. No defect is permitted that is probably going to weaken the concluded cylinder appreciably.
Repairs of rejected cylinders is authorized. Cylinders which are leaking must be rejected, other than that:
(b) Each and every this kind of twenty five,000 containers or considerably less, successively made each day, shall represent a good deal here and In the event the test container shall are unsuccessful, the whole lot shall be rejected or 10 further containers may be picked at random and subjected for the exam underneath which failure occurred.
(three) As a security precaution, if the producer elects for making this exam before the hydrostatic check, the producer really should design the check apparatus so the strain is placed on the smallest place practicable, within the place of closure, and in order to use the smallest possible quantity of air or gasoline.