On boilers connected with one another by what is known as headerlines, all valve connections thereto shall be closed and securely fastened while the boiler or boilers are being washed, cleaned, or repaired for the protection of the person so engaged.
225 ILCS 705/7.20
On boilers connected with one another by what is known as headerlines, all valve connections thereto shall be closed and securely fastened while the boiler or boilers are being washed, cleaned, or repaired for the protection of the person so engaged
Laws 1953, p. 701.
Official source: Illinois General Assembly. Reproduced from public-domain Illinois statutes; confirm against the official source for the current text. Not legal advice.