3202 USE OF CORROSIVE SUBSTANCES

3202.1 Acids or other corrosive substances may be used for cleaning windows only under the conditions set forth in this section.

3202.2 A scaffold shall be used.

3202.3 If the scaffold that is used is of the swinging type, it shall be suspended by a wire rope.

3202.4 The use of a fiber rope of any kind is prohibited.

3202.5 A highly dilute solution that is not more than five percent (5%) hydrochloric (muriaic) acid shall be used.

3202.6 The cleaner shall wear rubber gloves and shall apply the solution with a brush.

3202.7 All parts of the scaffolding and other equipment shall be liberally washed with water after each use to prevent corrosive reactions.

SOURCE: Section 11-2514, effective September 1, 1958, ch. 25, 5 DCR 28 (August 11, 1958); 11B DCRR, Special Edition.