user, or maker. The symbol must be registered with the Bureau of Explosives. Duplications unauthorized. (3) Inspector's official mark. (4) Date of test (such as 1-54 for January 1954). (5) Additional markings are permitted. (b) Sequence of marks. Number shall be just below the ICC marking; identifying symbol shall be just below the number; inspector's official mark shall be near the serial number. Date of test shall be so placed that dates of subsequent test can easily be added. Symbol in front of or following the number with space between, or symbol and serial number stamped into welded valve spud directly above the ICC mark located on head of cylinder are also authorized. Other variations in sequence of marks authorized only when necessitated by lack of space. (c) Location of markings. Markings may be stamped plainly and permanently in the following locations on the cylinder: (1) On shoulders and top heads not less than 0.087 inch thick. (2) On neck, valve boss, valve protection sleeve, or similar part permanently attached to top end of cylinder. (3) On a plate attached to the top of the cylinder or permanent part thereof; sufficient space must be left on the plate to provide for stamping at least six retest dates; the plate must be at least 16 inch thick and must be attached by welding, or by brazing at a temperature of at least 1,100° F., throughout all edges of the plate. (4) Variations in location of markings authorized only when necessitated by lack of space. (d) Size of marks. Space permitting, at least 4 inch high. [Order 13, 19 F. R. 1283, Mar. 6, 1954] § 78.56-20 Authorized steel. (a) Open hearth or electric steel of uniform quality and of the following chemical analyses is authorized (see footnote 1 of table): 1 A heat of steel made under any of the above specifications, chemical analysis of which is slightly out of the specified range, is acceptable, if satisfactory in all other respects, provided the standard permissible variations from specified chemical ranges and limits published in the American Iron and Steel Institute Products Manual, "Alloy Steel: Semifinished; Hot Rolled and Cold Finished Bars", dated July 1955, are not exceeded or are approved by the Bureau of Explosives. Addition of other elements to obtain alloying effect is not authorized. This designation shall not be restrictive and the commercial steel is limited in analysis shown in the table. [Order 13, 19 F. R. 1283, Mar. 6, 1954, as amended by Order 25, 21 F. R. 3014, May 5, 1956] tached hereto. The heat numbers (Were were not) marked on the material. All material was inspected and all that was accepted was found free from seams, cracks, laminations and other injurious defects. The compliance of cylinders with specification requirements was verified including markings, condition of inside, tests, threads, etc. All cylinders with defects which might prove injurious were rejected. The proc esses of manufacture and heat treatment were supervised and found to be efficient and satisfactory. The cylinder walls were measured and the minimum thickness noted was inch. The outside diameter was determined by a close approximation to be inches. Hydrostatic tests, tensile tests of material, and other tests as prescribed in specification ICC 4AA480 were made in the presence of the inspector and all cylinders accepted were found to be in compliance with the requirements of that specification. Records thereof are attached hereto. Each cylinder been equipped (Has-has not) with safety devices as follows:. I hereby certify that all of those cylinders proved satisfactory in every way and comply with the requirements of Interstate Commerce Commission specification No. 4AA480 except as follows: Exceptions (Manufacturer's name) test reports are in the files of the manufacturer. Note: Any omission of analyses by heats, if authorized, must be accounted for by notation hereon reading "The prescribed certificate of the manufacturer of material has been secured, found satisfactory, and placed on file," or by attaching a copy of the certificate. Chemical analyses were made by NOTE: When specifications require 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 - pounds per square inch and showed no defect." 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. ? Do not include removable cap but state whether with or without valve. These weights must be accurate to a tolerance of 1 percent. 3 Report approximate maximum and minimum volumetric capacity for the lot. [Order 13, 19 F. R. 1283, Mar. 6, 1954] (Signed) § 78.56-22 Guided bend test jig. (a) Dimensions as follows: 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". [Order 13, 19 F. R. 1284, Mar. 6, 1954] § 78.56-23 Alternate guided bend test jig. (a) Dimensions as follows: NOTE: Dimensions shown are suitable for bending lap-weld specimens of 0.05" to 0.133" 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. [Order 27, 21 F. R. 7605, Oct. 4, 1956] § 78.57-2 Type, size, service pressure1 and service temperature. (a) Type and size. Must be fusion welded; not over 1,000 pounds water capacity (nominal). (b) The service pressure shall be at least 150 and not over 500 pounds per square inch. (c) The service temperature shall be minus 320° F. [Order 27, 21 F. R. 7605, Oct. 4, 1956] § 78.57-3 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. [Order 27, 21 F. R. 7605, Oct. 4, 1956] The service pressure limits the use of the cylinder. It is shown by marks on the cylinder; for example: ICC-4L200 indicates the service pressure as 200 pounds per square inch. 2 The service temperature is the lowest temperature at which the cylinder may be used. D § 78.57-4 Duties of inspector. (a) Inspect all material and reject any not complying with requirements of this specification. (b) Verify chemical analysis of each heat of material by analysis or by obtaining certified analysis: Provided, That a certificate from the manufacturer thereof, giving sufficient data to indicate compliance with requirements, is acceptable when verified by check analyses of samples taken from one cylinder out of each lot of 200 or less. (c) Verify compliance with all specification requirements. Obtain samples for all tests. Obtain samples for check chemical analyses, where required. Witness all tests. Report volumetric capacity, tare weight (see report form), and minimum thickness of wall noted. (d) Render complete report (§ 78.57-22) to purchaser, cylinder maker, and the Bureau of Explosives. [Order 27, 21 F. R. 7605, Oct. 4, 1956] § 78.57-5 Material. (a) Designations and limiting chemical compositions of steel authorized by this specification shall be as shown in § 78.57-21 (a), Table I. [Order 27, 21 F. R. 7605, Oct. 4, 1956] |