Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 653 - DESIGN, OPERATION AND MAINTENANCE CRITERIA
Subpart F - CHLORINATION
Section 653.601 - Chlorination - Engineering Design Criteria
Universal Citation: 35 IL Admin Code ยง 653.601
Current through Register Vol. 48, No. 38, September 20, 2024
a) Procedure for Submitting Plans and Specifications - Design documents for chlorination shall be prepared and submitted in accordance with 35 Ill. Adm. Code 602.
b) Chlorinator equipment shall be:
1) capable of maintaining a minimum free
chlorine residual of 0.2 mg/l or a minimum combined residual of 0.5 mg/l in all
active parts of the distribution system at all times;
2) large enough to satisfy the immediate
chlorine demand and give a measurable residual of at least 2.0 mg/l under all
operating conditions after contact; and
3) capable of feeding chlorine to the water
being treated at a dosage rate of at least 5.0 mg/l except when the water has a
high chlorine demand. Factors in determining chlorine demand are:
A) pH;
B) water temperature;
C) contact time;
D) presence in the water of substances having
chlorine demand such as hydrogen sulfide, iron, manganese and nitrogenous
compounds including ammonia; and
E)
supplemental treatment such as aeration which reduces chlorine
demand.
c) Selection of Chemical - Chlorine compounds shall meet requirements of Section 653.202 and AWWA Standards for Disinfection B300.
d) Chemical Feed Equipment
1) Gas or solution feed equipment shall be
used for adding chlorine.
2)
Duplicate chlorination facilities shall be provided when operating conditions
do not allow repair of the chlorinator during off-pumping periods.
3) Standby chlorination equipment shall be
installed and operational at water supplies treating surface water.
4) Spare parts consisting of at least the
commonly expendable parts such as glassware, fittings, hose clamps and gaskets
shall be available for emergency repairs.
e) Equipment Location and Storage of Chemical
1) Gas Feed Equipment
A) Gas feed equipment and all cylinders shall
be located in a separate room away from other operating areas. The room shall
be free from excessive heat.
B)
Chlorination equipment shall be accessible for repair and
maintenance.
C) Ventilation shall
be provided for gas chlorinators and cylinders.
i) Mechanical forced-air ventilation shall be
installed where natural ventilation to the outside atmosphere is not
available.
ii) Mechanical
forced-air ventilation shall be capable of providing one complete air change
per minute. Suction shall be located within 12 inches of floor level.
iii) Mechanical forced-air ventilation
equipment shall be capable of producing a negative pressure in the area
contaminated with chlorine gas and discharging the chlorine gas to a safe
location away from the evacuated space.
D) All 150 pound chlorine cylinders - full,
empty or in use - shall be chained upright. One ton containers shall be secured
to prevent movement.
E) Chlorine
cylinders shall be stored in an area not exposed to direct sunlight.
F) One set of corrosion-resistant scales
shall be provided for weighing each gas chlorine cylinder in service.
2) Solution Feed Equipment
A) Corrosion-resistant containers shall be
provided for solution feeders.
B)
Containers shall have non-corrodible covers with overhanging edges. Openings
shall be constructed to prevent contamination.
C) Scales or a volumetric measuring device
shall be provided for determining the amount of solution fed.
f) Safety-Respiratory Protection Equipment
1) Respiratory protection
equipment consisting of self-contained, pressure-demand breathing units meeting
requirements of the National Institute for Occupational Safety and Health
(NIOSH) shall be provided where gas chlorination is used.
A) The units shall use compressed air and
have at least a 30 minute capacity.
B) It is recommended that the units be
compatible with or exactly the same as units used by the local fire
department.
2)
Respiratory protection equipment shall be stored in an accessible location
outside the room housing gas chlorination facilities.
3) All personnel involved in the use and
maintenance of gas chlorination facilities shall be able to properly operate
the breathing equipment. All personnel shall have periodic refresher training
exercises using the equipment.
4) A
source of certified air under
29
CFR Section 1910.183(1983)
shall be used for refilling the tanks.
5) The equipment shall be checked at regular
intervals to assure that it is in good working condition.
Disclaimer: These regulations may not be the most recent version. Illinois may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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