- Part Number:1910
- Part Number Title:Occupational Safety and Health Standards
- Subpart:1910 Subpart R
- Subpart Title:Special Industries
- Standard Number:
- GPO Source:
Ranges (bleaching continuous). Continuous bleaching ranges are of several types and may be made for cloth in rope or open-width form. The goods, after wetting out, pass through a squeeze roll into a saturator containing a solution of caustic soda and then to an enclosed J-box. A V-shaped arrangement is attached to the front part of the J-box for uniform and rapid saturation of the cloth with steam before it is packed down in the J-box. The cloth, in a single strand rope form, passes over a guide roll down the first arm of the "V" and up the second. Steam is injected into the "V" at the upper end of the second arm so that the cloth is rapidly saturated with steam at this point. The J-box capacity is such that cloth will remain hot for a sufficient time to complete the scouring action. It then passes a series of washers with a squeeze roll in between. The cloth then passes through a second set of saturator, J-box, and washer, where it is treated with the peroxide solution. By slight modification of the form of the unit, the same process can be applied to open-width cloth.
Nip guards. All nip guards shall comply with Table R-1.
Table R-1—Guard Openings
[Openings in the guard or between the guard and working surface shall not be greater than the following]
|Distance of opening from nip point||Maximum width of opening|
|0 to 1½||¼|
|1½ to 2½||3/8|
|2½ to 3½||½|
|3½ to 5½||5/8|
|5½ to 6½||¾|
|6½ to 7½||7/8|
|7½ to 8½||1¼|
The measurements in Table R-1 are all in inches.
Swiveled double-bar gates. Swiveled double-bar gates shall be installed on all warpers operating in excess of 450 yards per minute. These gates shall be so interlocked that the machine cannot be operated until the gate is in the "closed position," except for the purpose of inching or jogging.
[39 FR 23502, June 27, 1974, as amended at 40 FR 23073, May 28, 1975; 49 FR 5324, Feb. 10, 1984; 61 FR 9227, March 7, 1996; 63 FR 33450, June 18, 1998; 81 83006, Nov. 18, 2016]