The best Side of bar 178
The best Side of bar 178
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(four) As a security precaution, Should the maker elects to make this examination ahead of the hydrostatic exam, the producer really should layout the exam apparatus so the stress is applied to the smallest spot practicable, throughout the point of closure, and in order to make use of the smallest achievable volume of air or fuel.
usually means the person whose title and handle or symbol seems as Portion of the specification markings needed by this part or, for a packaging marked With all the symbol of an acceptance company, the individual on whose behalf the approval agency certifies the packaging.
The fabric should be identified by any appropriate method except that plates and billets For warm-drawn cylinders must be marked with the warmth number.
(two) A spun cylinder is 1 through which an end closure while in the concluded cylinder has been welded because of the spinning course of action.
(two) If a sign of your title on the producer or other identification of the packaging as specified from the proficient authority is necessary, the identify and address or symbol from the maker or even the acceptance agency certifying compliance Along with the UN standard needs to be entered. Symbols, if employed, must be registered With all the Affiliate Administrator.
(one) Markings have to be stamped plainly and completely on shoulder or prime head of jacket or with a completely attached plate or head protective ring.
(four) Figure out porosity of filling and tare weights; verify compliance of marking with prescribed prerequisites; acquire needed copies of steel shell experiences prescribed in paragraph (b) of this portion; and furnish comprehensive take a look at studies demanded by this specification to the one who has done the producer of your cylinders and, upon ask for, for the purchaser.
The finished cylinders has to be uniformly and correctly warmth dealt with just before assessments. Heat therapy of cylinders in the approved analyses have to be as here follows:
(iv) All straight threads should have no less than six engaged threads, a good fit, and an element of security in shear of at least 10 at the test pressure from the cylinder. Shear worry need to be calculated by utilizing the right thread shear area in accordance with NBS Handbook H-28.
(ii) In using the “extension below load” technique, the overall pressure (or “extension underneath load”) comparable to the anxiety at which the 0.2 % lasting pressure takes place may very well be identified with ample precision by calculating the elastic extension on the gauge length below correct load and incorporating thereto 0.
(i) If the chosen cylinder passes the drinking water-jacket or immediate growth check, the remaining cylinders in Just about every ton have to be tension tested via the proof force water-jacket or immediate expansion examination process as prescribed in CGA C-one.
(2) Validate compliance of cylinder shells with all shell needs, inspect within in advance of closing in the two finishes, confirm warmth cure as proper; receive all samples for all exams and for Look at analyses, witness all exams; confirm threads by gauge, report volumetric potential and bare minimum thickness of wall noted.
(two) Once the porosity of each and every cylinder will not be recognised, a cylinder taken at random from lots of 200 or a lot less need to be examined for porosity. If the take a look at cylinder fails, Every cylinder while in the good deal could be analyzed individually and people cylinders that pass the test are appropriate.