Illinois Administrative Code › Title 77 - PUBLIC HEALTH › Part 250 - HOSPITAL LICENSING REQUIREMENTS › Subpart U - CONSTRUCTION REQUIREMENTS FOR EXISTING HOSPITALS › Section 250.2660 - Mechanical

Current through Register Vol. 48, No. 28, July 12, 2024
a) Any retrofit of
				existing heating, ventilating, or air conditioning systems for energy
				conservation purposes may meet any or all of the requirements of Section
				250.2480(Mechanical)
				in lieu of the parallel requirements of this Section.
b) Boiler feed pumps, return pumps, and
				circulating pumps shall be furnished in duplicate, each of which has a capacity
				to carry the full load. Blow off valves, relief valves, nonreturn valves,
				injectors and fittings shall be provided to meet the requirements of the city
				and state codes and recommendations of the American Society of Mechanical
				Engineers.
c) Air Conditioning,
				Heating and Ventilating Systems
1) The
				systems should be capable of providing the following temperatures and
				humidities in the following areas:
Temperature
Relative Humidity %
Area Designation
°F
°C
Min.
Max.
Operating Room
70-76*
21-24*
50
60
Delivery Room
70-76*
21-24*
50
60
Recovery Room
75
24
50
60
Intensive Care Units
75-80*
24-27*
30
60
Nursing Units
75
24
30
60
Special Care Nusery Units
75-80*
24-27*
30
60
Other patient areas
75
24
*Variable range required
2)
				Ventilation Systems
A) Air handling systems
				shall conform to NFPA 90A, Standard for Installation of Air Conditioning and
				Ventilating Systems.
B) Outdoor
				intakes shall be located as far as practical but not less than 15 feet from
				exhaust outlets of ventilation systems, combustion equipment stacks,
				medical-surgical vacuum systems, plumbing vent stacks, or from areas that may
				collect vehicular exhaust and other noxious fumes.
C) All ventilation air supplied to operating
				rooms, delivery rooms and nurseries shall be delivered at or near the ceiling
				of the area served, and all exhaust air from the area shall be removed near the
				floor level. At least two exhaust outlets shall be used in all operating and
				delivery rooms.
D) All central
				ventilation or air conditioning systems shall be equipped with filters having
				efficiencies no less than those specified in the following:
FILTER EFFICIENCIES FOR CENTRAL VENTILATION AND AIR
							 CONDITIONING SYSTEMS IN GENERAL HOSPITALS
Area Designation
Filter Efficiencies (percent)
Sensitive Areas*
50
Patient Care, Treatment, Diagnostic and Related
							 Areas
50
Food Preparation Areas and Laundries
50
Administrative, Bulk Storage and Soiled Holding
							 Areas
20
*Includes operating rooms, delivery rooms, nurseries,
							 recovery rooms, and intensive care units.
E)
				The filter shall be located upstream of the air conditioning equipment. If a
				prefilter is installed, it shall be located upstream of the air conditioning
				equipment. The main filter may be located before or after the
				equipment.
F) Access to filters for
				changing shall be provided outside of clean areas unless approved otherwise by
				the Department.
G) All filter
				efficiencies shall be average atmospheric dust spot efficiencies tested in
				accordance with the ASHRAE Handbook of Fundamentals.
H) Filter frames shall be durable and shall
				provide an airtight fit with the enclosing duct work. All joints between filter
				segments and enclosing duct work shall be gasketed or sealed to provide a
				positive seal against air leakage.
I) A manometer shall be installed across each
				filter bed serving central air systems.
J) Ducts that penetrate construction intended
				for X-ray or other ray protection shall maintain the effectiveness of the
				protection.
K) Fire and smoke
				dampers shall be constructed, located and installed in accordance with the
				requirements of NFPA 90A, Standard for Installation of Air Conditioning and
				Ventilating Systems. Exception: all systems, regardless of size, that serve
				more than one smoke or fire zone, shall be equipped with smoke detectors to
				shut down fans automatically as specified in Paragraph 4-3.1 of NFPA
				90A.
L) Laboratory hoods shall meet
				the following general requirements:
i) The
				exhaust system shall be separate from the building exhaust system;
				and
ii) The exhaust duct system
				shall be of noncombustible corrosion-resistant material consistent with the
				usage of the hood.
M)
				Laboratory hoods shall meet the following special requirements:
i) Each hood for the processing of infectious
				or radioactive materials shall have an adequate face velocity, shall be
				connected to an independent exhaust system, shall be provided with filters with
				99.97 percent efficiency (based on the DOD, diocytlphthalate test method as
				described in DOD Penetration Test Method MIL STD 282: Filter Units, Protective
				Clothing, Gas-Mask Components and Related Products: Performance Test Methods)
				in the exhaust system, and shall be designed and equipped to permit the safe
				removal, disposal and replacement of contaminated filters.
ii) Duct systems in which radioactive and
				strong oxidizing agents are present shall be constructed of corrosion-resistant
				material consistent with usage for a minimum distance 10 feet from the hood and
				shall be equipped with wash-down facilities.
N) The hood and duct system for cooking
				equipment used in processes producing smoke or grease-laden vapors shall comply
				with NFPA 96, Standard for Ventilation Control and Fire Protection of
				Commercial Cooking Operations. That portion of the fire extinguishment system
				required for protection of the duct system may be omitted when all cooking
				equipment is served by listed grease extractors.
O) Other exhaust hoods in food preparation
				centers shall have an adequate exhaust rate.
P) Clean-out openings shall be provided to
				allow proper cleaning of the duct system serving kitchen and food preparation
				areas.
Q) The ventilation system
				for anesthesia storage rooms shall conform to the requirements of NFPA 99,
				Standard for Health Care Facilities, including the gravity option
				system.
R) Boiler rooms shall be
				provided with sufficient outdoor air to maintain proper combustion rates for
				equipment.
S) Rooms containing
				heat-producing equipment, such as boiler rooms, heater rooms, food preparation
				centers, laundries, and sterilizer rooms, shall be ventilated.
T) For general pressure relationships and
				ventilation of certain hospital areas, see Table F.