Illinois Compiled Statutes
Chapter 820 - EMPLOYMENT
820 ILCS 245/ - Work Under Compressed Air Act.

(820 ILCS 245/1) (from Ch. 48, par. 261)
Sec. 1.

When used in this Act, unless the context indicates otherwise, the
term
(a) "Caisson" means a wood, steel, concrete or reenforced concrete
air-tight and water-tight chamber in which it is possible for men to work
to excavate material.
(b) "Lock" means a chamber designed to facilitate the passage of men and
materials from an air pressure greater than normal, as in a compartment,
caisson or tunnel, to the ground or water level or normal air pressure.
(c) "Pressure" means gauge air pressure in pounds per square inch.
(d) "Tunnel" means a subterranean passage or chamber.

(Source: Laws 1939, p. 614.)
 
(820 ILCS 245/1.5)
Sec. 1.5. Federal regulations; operation of Act.
(a) Except as provided in subsection (b), Sections 1 through 6 of this Act are inoperative on and after the effective date of this amendatory Act of the 102nd General Assembly.
(b) If at any time the Safety and Health Regulations for Construction standards at 29 CFR 1926.800 through 29 CFR 1926.804 are repealed or revoked, the Director of Labor shall adopt a rule setting forth a determination that this Act should be reviewed and reinstated, in whole or in part, in order to protect the health and safety of Illinois' workers. On the date such a rule is adopted, this Act shall again become operative.

(Source: P.A. 102-1071, eff. 6-10-22.)
 
(820 ILCS 245/2) (from Ch. 48, par. 262)
Sec. 2.

The working period of any person under compressed air in any
compartment, caisson, tunnel or places shall be divided into two periods
under compressed air with an interval of rest between the two periods. If
the air pressure exceeds fifteen pounds per square inch, the said interval
of rest must be spent in the open air. Persons who have not previously
worked in compressed air, when the air pressure exceeds fifteen pounds per
square inch, shall work therein only one of the two said periods during the
first twenty-four hours of their employment. Except in cases of extreme
emergency no person shall be employed or subjected to pressure exceeding
fifty pounds per square inch. The maximum number of hours to each period
and the minimum rest intervals between the periods during any twenty-four
hours for any pressure as given in columns one and two of the following
table shall be set opposite such pressure in columns three, four, five, six
and seven of said table:

..............................................................


*The employer may determine the time of each period when the pressure is
not more than fifteen pounds per square inch, provided that the total for
the periods does not exceed eight hours. The limits or hours as specified
in said table shall apply according to the maximum pressure attained at any
time during the period.

(Source: Laws 1939, p. 614.)
 
(820 ILCS 245/3) (from Ch. 48, par. 263)
Sec. 3.

No person employed in compressed air shall be permitted to pass
from the working chamber to normal air, except after decompression in a lock as follows:
(a) Where the air pressure is greater than normal and not more than fifteen
pounds per square inch, the time of decompression shall be at least two minutes;
(b) Where the air pressure is more than fifteen pounds per square inch,
and not more than twenty-six pounds per square inch, decompression shall
be at the average rate of not more than three pounds per minute;
(c) Where the air pressure is more than twenty-six pounds per square inch,
and not more than thirty-three pounds per square inch, decompression shall
be at the average rate of not more than two pounds per minute;
(d) Where the air pressure is more than thirty-three pounds per square
inch, decompression shall be at the average rate of not more than one pound per minute;
(e) Where the air pressure is more than fifteen pounds per square inch,
a stage decompression shall be used in which a drop of one-half of the maximum
gauge pressure shall be at the rate of five pounds per minute. The remaining
decompression shall be at a uniform rate and the total time of decompression
shall equal the time specified for the original maximum pressure;
(f) The time of decompression shall be posted in each man lock.

(Source: Laws 1939, p. 614.)
 
(820 ILCS 245/4) (from Ch. 48, par. 264)
Sec. 4.

Every employer of workers in compressed air and every agent,
foreman, manager or superintendent thereof in charge of such work, shall be
responsible for the observance of this Act.

(Source: Laws 1939, p. 614.)
 
(820 ILCS 245/5) (from Ch. 48, par. 265)
Sec. 5.

Any employer of workers under compressed air or any agent, foreman,
manager or superintendent thereof in charge of such work, who violates any
of the provisions of this Act shall be deemed guilty of a petty offense.

(Source: P.A. 77-2437.)
 
(820 ILCS 245/6) (from Ch. 48, par. 266)
Sec. 6.

It shall be the duty of the Department of Labor to enforce the
provisions of this Act and prosecute all violations of the same before any
Court of competent jurisdiction in this State, and for that purpose the
Department of Labor, its officers and duly authorized employees are hereby
empowered to visit and inspect at all reasonable times, all places where
work is done in compressed air.

(Source: Laws 1939, p. 614.)
 
(820 ILCS 245/7) (from Ch. 48, par. 267)
Sec. 7.

The invalidity of any portion of this Act shall in no way affect
the validity of any other portion hereof.

(Source: Laws 1939, p. 614.)
 
(820 ILCS 245/8) (from Ch. 48, par. 268)
Sec. 8.
This Act may be cited as the Work Under Compressed Air Act.

(Source: P.A. 86-1475.)

Structure Illinois Compiled Statutes