Not known Details About bar 178
Not known Details About bar 178
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All spun cylinders and plugged cylinders must be examined for leakage by dry gas or dry air pressure just after the bottom has long been cleaned and is particularly cost-free from all moisture, subject matter to the next conditions and constraints:
(iii) Each individual ligament which separates two openings should be not less than three times the normal of the diameters of The 2 openings.
(3) A plugged cylinder is one during which a everlasting closure in the bottom of a concluded cylinder is effected by a plug.
Cylinders must be created using machines and processes adequate to make certain that Just about every cylinder created conforms to the requirements of this subpart. No defect is permitted that is probably going to weaken the finished cylinder appreciably.
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The inspector shall get ready a report that contains, in a minimum, the relevant information and facts mentioned in CGA C-11. Any extra info or markings which are expected with the relevant specification must be revealed over the examination report. The signature of your inspector to the stories certifies that the procedures of manufacture and warmth remedy of cylinders ended up noticed and located satisfactory.
Two exam specimens cut from one cylinder representing Each and every lots of two hundred cylinders or considerably less has to be subjected towards the mechanical Houses test, as follows:
(1) Welding or brazing is authorized for the attachment of neckrings and footrings which might be non-pressure areas, and only to your tops and bottoms of cylinders aquiring a provider pressure of five hundred psig or less.
(two) Warmth treatment method isn't essential after welding or brazing weldable minimal carbon areas to attachments, laid out in paragraph (f)(one) of this area, of similar material that have been Formerly welded or brazed to the top or base of cylinders and thoroughly warmth dealt with, presented this sort of subsequent welding or brazing doesn't deliver a temperature in excess of 400 °File in any Element of the top or base materials.
Welding or brazing for virtually any function whatsoever is prohibited, besides that welding by spinning is permitted to shut The underside of spun cylinders. Machining or grinding to provide suitable floor complete at issue of closure is required.
(iv) Long lasting volumetric expansion may not exceed ten % of the total volumetric enlargement at test strain.
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Cylinders need to be created utilizing products and procedures suitable to make certain each cylinder made conforms to the requirements of the subpart. No fissure or other defect is permitted that is probably going to weaken the completed container appreciably. The general surface area complete might not exceed a roughness of 250 RMS. website Particular person irregularities such as attract marks, scratches, pits, and many others., need to be held to your least according to superior significant anxiety stress vessel producing procedures.
(2) If a sign from the identify from the maker or other identification in the packaging as specified through the qualified authority is needed, the name and deal with or image in the manufacturer or perhaps the acceptance company certifying compliance Along with the UN regular have to be entered. Symbols, if used, has to be registered Along with the Affiliate Administrator.