Section 12481 - Examination of Can Closures and Can Closure Machines(a) Visual Examination. During regular production runs, a constant watch shall be maintained for gross maladjustments such as deadheads, cut-overs, and other similar double seam defects. Maintaining this constant check may be accomplished in several ways, depending on the type of closing machine, line speeds, and general equipment layout. It may best be performed by training the closing machine operator to recognize irregularities by visual examination. However, an adequate check program can be maintained through use of other trained personnel. The operator, can closure supervisor, or other qualified personnel shall visually examine, at intervals of not more than thirty minutes, the top seam of a randomly selected can from each seaming station, and shall record his observations. Additional visual seam inspections shall be made immediately after a can-jam in a closing machine, or after start-up of a machine following a prolonged shut-down. All pertinent observations shall be recorded. If irregularities are found, the action taken shall be noted.
(b) Tear-down Examination. Tear-down examinations shall be made at a frequency of at least one can per seaming station every four hours or each major fraction thereof. Such examinations shall be made as soon as possible after starting up following a shut-down, waiting only long enough for the machine to "warm up." Cans for visual inspection shall be taken during this warm-up period. The results of the tear-down examinations shall be recorded.(c) General Observations. Following are some of the various factors which influence double seam quality and which shall be examined in the course of the can seam examination: (1) Condition of the seaming equipment--whether or not the mechanical operation and adjustment of the closing machine give the proper seam contours.(2) Can material--variations in tinplate thickness.(3) Can size--roll contours change with can size to accommodate variations in plate thickness. Other pertinent observations shall also be recorded indicating the presence or absence of such defects as cut-overs, droops, etc.
Cal. Code Regs. Tit. 17, § 12481
1. New section filed 3-13-67; effective thirtieth day thereafter (Register 67, No. 11). Note: Authority cited: Section 28440, Health and Safety Code. Reference: Sections 28310- 28322, Health and Safety Code.
1. New section filed 3-13-67; effective thirtieth day thereafter (Register 67, No. 11).