- a) The mill, tank, vat or vessel is equipped with a cover which completely covers the mill, tank, vat or vessel opening, except for an opening no larger than necessary to allow for safe clearance for a mixer shaft. Such cover shall extend at least ½ inch beyond the outer rim of the opening or be attached to the rim.
- b) The cover remains closed, except when production, sampling, maintenance, or inspection procedures require access.
- c) The cover is maintained in good condition, such that when in place, it maintains contact with the rim of the opening for at least 90% of the circumference of the rim.
No person shall operate an open-top mill, tank, vat or vessel, with a volume of more than 12 gallons for the production of paint or ink unless:
(Source: Added at 12 Ill. Reg. 7311, effective April 8, 1988)