Cal. Code Regs. Tit. 8, § 6100 - Temperature, Illumination, Sanitation and Ventilation
(a) Temperature of all working chambers which
are subjected to compressed air shall, by means of after-coolers or other
suitable devices, be maintained at a temperature not to exceed 85 degrees
Fahrenheit.
(b) Illumination in
compressed air chambers shall be by electricity exclusively and two independent
electric-lighting systems with independent sources of supply shall be used. The
emergency source shall be arranged to become automatically operative in the
event of failure of the regularly used source. Electrical installations and
equipment shall comply with applicable portions of the Electrical Safety Orders
in Title 8 of the CCR.
(c) The
minimum intensity of illumination on any walkway, ladder, stairway, or working
level shall not be less than 10-foot candles, and in all work places the
illumination shall at all times be such as to enable employees to see
clearly.
(d) Sanitary, heated,
illuminated, and ventilated dressing rooms and drying rooms shall be provided
for all employees engaged in compressed air work. Such rooms shall contain
suitable benches and lockers. Bathing accommodations (showers at the ratio of 1
to 10 employees per shift) equipped with running hot and cold water along with
suitable and adequate toilet accommodations shall be provided. One toilet for
each 15 employees, or fractional part thereof, shall be provided. While in a
compressed air environment and the toilet bowl is shut by a cover, there shall
be an air space so that the bowl or bucket does not implode when the pressure
is increased. All parts of caissons and other working compartments shall be
kept in a sanitary condition.
(e)
Ventilation in the locks and chambers, with the exception of the medical
chamber, shall be such that the air quality meets the requirement of Section
5144(i).
(f) Exhaust valves and exhaust pipes shall be
provided and operated so that the working chamber shall be well ventilated, and
there shall be no pockets of dead air. Outlets may be required at intermediate
points along the main low pressure air supply line to the heading to eliminate
such pockets of dead air. Ventilating air shall be not less than 30 cubic feet
per minute per person.
(g) The air
in the workplace shall be analyzed by the employer not less than once each
shift, and records of such tests shall be kept on file at the place where the
work is in progress. The test results shall be within the permissible exposure
limits (PEL's) specified in the Section
5155, for hazardous gases and
within 10 percent of the lower explosive limit of flammable gases.
(h) Forced ventilation shall be provided
during decompression. During the entire decompression period, forced
ventilation through chemical or mechanical air purifying devices that will
ensure a source of fresh air shall be provided.
(i) When an oxygen breathing gas system is
used during decompression, the employer shall take one, or both, of the
following steps to ensure that the concentration of oxygen inside the chamber
or lock does not exceed twenty five percent (25%) by volume:
(1) The oxygen breathing gas system shall
capture the oxygen that is not consumed by the user and directly exhaust it to
a well ventilated area outside of the lock or chamber;
(2) An oxygen meter shall be used to
continuously monitor the oxygen concentration inside the chamber or
lock.
Notes
2. Amendment of subsection (e) and new subsections (i)-(i)(2) filed 3-10-2010; operative 4-9-2010 (Register 2010, No. 11).
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
2. Amendment of subsection (e) and new subsections (i)-(i)(2) filed 3-10-2010; operative 4-9-2010 (Register 2010, No. 11).
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