Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 653 - DESIGN, OPERATION AND MAINTENANCE CRITERIA
Subpart H - CROSS-CONNECTIONS
Section 653.804 - Heat Exchange Cross-Connections
Universal Citation: 35 IL Admin Code ยง 653.804
Current through Register Vol. 48, No. 38, September 20, 2024
a) Instantaneous water heaters or water storage heaters using shell and tube design steam-fired heat exhangers shall be acceptable for heating water for domestic use under the following conditions:
1) The purity of the steam supplied to the
heat exchangers shall meet United States Food and Drug Administration (USFDA)
requirements for steam that may contact food. Boiler water and steam condensate
additivies shall meet requirements of USFDA regulation
21 CFR
173.310(1983).
2) Double check-valve assembly meeting
requirements of Section
653.801(d)
shall be installed in the cold water inlet
piping of the heat exchanger. The unit shall be tested annually and required
service performed within 15 days.
3) A maintenance log shall be maintained and
include the information specified in Section
653.802(e)(4).
b) Instantaneous water heaters and water storage heaters using shell and tube design hot water boiler-fired heat exhangers shall be acceptable for heating water for domestic use under the following conditions:
1) Chemical additives
to control corrosion and scale of the hot water boiler system shall not contain
toxic chemicals (e.g., chromate or nitrite based inhibitors).
A) Chemicals approved by United States
Environmental Protection Agency (USEPA) or USFDA which will not breakdown to
harmful substances in the system may be applied for scale and corrosion control
in public water supplies (e.g., food grade castic soda, sodium silicate, sodium
polyphosphate).
B) The addition of
sodium sulfite as an oxygen scavenger in hot water boilers is acceptable when
approved double check-valves, in compliance with Section
653.801(d),
are installed.
2) A
double check-valve assembly, in compliance with Section
653.801(d),
shall be installed in the cold water inlet piping of the heat exchanger.
A) The unit shall be tested annually and
required service performed within 15 days.
B) A maintenance log shall be maintained and
include information specificed in Section
653.802(e)(4).
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