NOTE: When specification requires test for only 1 out of each lot of 200 or less cylinders, the check on the others must be indicated by a notation hereon reading, "Each cylinder was subjected to a pressure of square inch and showed no defect." ------- pounds per 1 If the tests are made by a method involving the measurement of the amount of liquid forced into the cylinder by the test pressure, then the basic data, on which the calculations are made, such as the pump factors, temperature of liquid, coefficient of compressibility of liquid, etc., must also be given. Report approximate maximum and minimum volumetric capacity for the lot. The tare weight of each cylinder was determined and a record thereof is attached hereto. Each cylinder has been equipped with safety devices--- A certified report of manufacture and test of the steel shells is attached hereto. I hereby certify that, subject to the acceptability of the reports covering the steel shells, all of these cylinders proved satisfactory in every way and comply with the requirements of the Interstate Commerce Commission specification No. 8AL. Signed... § 78.60-25 Guided bend test jig. (a) Dimensions as follows: (Inspector) NOTE: Dimensions shown for die and plunger are for %" thick material only. The following dimensions shall be used for other thicknesses. Thickness of plunger member=4x thickness of test specimen. Radius of plunger member=2x thickness of test specimen. Width of opening, die member=6x thickness of test specimen+%". Radius of die member=3X thickness of test specimen +16". § 78.60-26 Alternate guided bend test jig. (a) Dimensions as follows: Dimensions shown are suitable for bending lap-weld specimens of .05" to .133" material thickness. A piece of 2" pipe may be slipped over the mandrel for turning. For any specimen thickness, fillers of appropriate thickness shall be added to one or both sides of the specimen as shown to obtain the required elongation A B (b) Alternate guided bend test jig. Dimensions as follows: § 78.63 Specification 9; inside containers, seamless or welded or brazed steel cylinders. § 78.63-1 Compliance. (a) Required in all details. § 78.63-2 Type, size, and service pressure-(a) Type and size. Must be seamless, welded, or brazed (brazing material must have a melting point of not less than 1,000° F.). The maximum water capacity of containers in this class shall not exceed 86 cubic inches. Longitudinal seams are prohibited, except that containers constructed from longitudinally welded steel tubing are authorized: Provided, That certification is made by the tubing manufacturer that the tubing has been pressure tested to a fiber stress of 24,000 pounds per square inch as calculated by the formula D § 78.63-3 Inspection by whom and where. (a) By competent inspector; chemical analyses and tests, as specified, to be made within limits of the United States. Interested inspectors are authorized. (a) § 78.63-4 Duties of inspector. Inspect all material and reject any not complying with requirements. (b) Verify compliance with the requirements of § 78.63-5 by submitting copy of certified chemical analysis obtained from the steel manufacturer for each heat of steel (ladle analysis acceptable); or if such evidence is lacking, then a sample from each coil or sheet must be analyzed and results submitted. (c) Verify compliance of cylinders with all requirements including markings; inspect inside before closing in both ends; verify heat treatment as proper; select samples for all tests and for check chemical analyses; witness all tests; verify threads by gauge; report volumetric capacity (see report form) and minimum thickness of wall noted. § 78.63-5 Steel. (a) Open-hearth or electric steel of uniform quality. Content percent for the following not over: Carbon, 0.150; phosphorus, 0.045; sulphur, 0.055. § 78.63–6 Identification of material. (a) Required; any suitable method. § 78.63-7 Defects. (a) Material with seams, cracks, laminations, or other injurious defects, not authorized. § 78.63-8 Manufacture. (a) By proper appliances and methods; dirt and scale to be removed as necessary to afford proper inspection; no defect acceptable that is likely to weaken the finished cylinder appreciably; reasonably smooth and uniform surface finish required. Seams must be made as follows: (1) Circumferential seams. Except as provided in subparagraph (2) of this paragraph by welding or by brazing. Heads attached by brazing must have a driving fit with the shell, unless the shell is crimped, swedged, or curled over the skirt or flange of the head, and be thoroughly brazed until complete penetration by the brazing material of the brazed joint is secured. Depth of brazing from end of shell must be at least four times the thickness of shell metal. (2) A container made of two hemispherical heads, each having an integral tangential cylindrical skirt portion assembled so that the two cylindrical skirt portions telescope one within the other is authorized but must meet the following additional requirements for the skirt portions; one be a driving fit within the other; they be of equal length and telescoped for their full length; the length of the overlap be not less than 8 nor more than 10 times the thickness of the thinner of the two skirts; the overlapping joint be brazed (not welded) so as to get complete penetration for the full length of the joint. § 78.63-9 Wall thickness. (a) The wall stress at 600 pounds per square inch shall not exceed 24,000 pounds per square inch, except that for longitudinally welded steel tubing the stress shall not exceed 20,400 pounds per square inch. The minimum wall for any cylinder shall be 0.040 inch. For the container authorized in § 78.63-8 (a) (2) the wall thickness of the cylinder shall be taken as the sum of the thickness of the two skirts (without allowance for the brazing material between). t-thickness in inches; C=0.85 (design factor); S and D have same significance as in paragraph (b) of this section. The minimum thickness of head or skirt shall be 0.040 inch. The thickness of the skirt shall be not less than the thickness of the head. § 78.63-10 Heat treatment. (a) Body and heads must be uniformly and properly heat treated prior to tests. § 78.63-11 Openings in cylinders. (a) Each opening in cylinders, except those for safety devices, must be provided with a fitting, boss, or pad, securely attached to cylinder by brazing or by welding or by threads. If threads are used, they must comply with the following: (1) Threads must be clean cut, even, without checks, and tapped to gauge. (2) Taper threads to be of length not less than as specified for American Standard taper pipe threads. (3) Straight threads, having at least 4 engaged threads, to have tight fit and calculated shear strength at least 10 times the test pressure of the cylinder; gaskets required, adequate to prevent leakage. (b) Closure of fitting, boss, or pad must be adequate to prevent leakage. § 78.63-12 Safety devices. (a) Devices must be as required by the Interstate Commerce Commission's regulations that apply. (See §§ 73.34 (f) and 73.301 (i) of this chapter.) § 78.63-13 Pressure tests. (a) Each cylinder produced shall be tested at an internal pressure1 of at least 400 pounds per square inch and not exceeding 600 pounds per square inch, held for at least 'Warning: Where air or gas pressure is used for testing, means designed to protect personnel is recommended. |