18-29-713.9.1 Multiple installations.

   Where bedpan washers are located above each other on more than one floor, a local vent stack is permitted to be installed to receive the local vent on the various floors. Not more than three bedpan washers shall be connected to a 2-inch (50 mm) local vent stack, not more than six to a 3-inch (75 mm) local vent stack and not more than twelve to a 4-inch (100 mm) local vent stack. In multiple installations, the connections between a bedpan washer local vent and a local vent stack shall be made with tee or tee-wye sanitary pattern drainage fittings installed in an upright position.

(Amend Coun. J. 11-8-12, p. 38872, § 259)

18-29-713.9.2 Trap required.

   The bottom of the local vent stack, except where serving only one bedpan washer, shall be drained by means of a trapped and vented waste connection to the sanitary drainage system. The trap and waste shall be the same size as the local vent stack.

18-29-713.9.3 Trap seal maintenance.

   A water supply pipe not less than 1/4 inch (6 mm) in diameter shall be taken from the flush supply of each bedpan washer on the discharge or fixture side of the vacuum breaker, shall be trapped to form not less than a 3-inch (75 mm) water seal, and shall be connected to the local vent stack on each floor. The water supply shall be installed so as to provide a supply of water to the local vent stack for cleansing and drain trap seal maintenance each time a bedpan washer is flushed.

18-29-713.10 Sterilizer vents and stacks.

   Multiple installations of pressure and non-pressure sterilizers shall have the vent connections to the sterilizer vent stack made by means of inverted wye fittings. Access shall be provided to vent connections for the purpose of inspection and maintenance.

18-29-713.10.1 Drainage.

   The connection between sterilizer vent or exhaust openings and the sterilizer vent stack shall be designed and installed to drain to the funnel or basket-type waste fitting. In multiple installations, the sterilizer vent stack shall be drained separately to the lowest sterilizer funnel or basket-type waste fitting or receptor.

18-29-713.11 Sterilizer vent stack sizes.

   Sterilizer vent stack sizes shall comply with Section 18-29-713.11.1 through Section 18-29-713.11.4.

18-29-713.11.1 Bedpan steamers.

   The minimum size of a sterilizer vent serving a bedpan steamer shall be 1 1/2 inches (38 mm) in diameter. Multiple installations shall be sized in accordance with Table 18-29-713.11.1.

Table 18-29-713.11.1
Stack Sizes for Bedpan Steamers and Boiling Type Sterilizers (Number of Connections of Various Sizes Permitted to Various-Sized Sterilizer Vent Stacks)

Stack Size (inches)	Connection Size
	1 1/2"		2"
1 1/2 a	1	or	0
2 a	2	or	1
2 b	1	or	1
3 a	4	or	2
3 b	2	or	2
4 a	8	or	4
4 b	4	or	4

 

For SI: 1 inch = 25.4 mm.

a.   Total of each size.

b.   Combination of sizes.

18-29-713.11.2 Boiling-type sterilizers.

   The minimum size of a sterilizer vent stack shall be 2 inches (51 mm) in diameter where serving a utensil sterilizer and 1 1/2 inches (38 mm) in diameter where serving an instrument sterilizer. Combinations of boiling-type sterilizer vent connections shall be sized in accordance with Table 18-29-713.11.1.

18-29-713.11.3 Pressure sterilizers.

   Pressure sterilizer vent stacks shall be 2 1/2 inches (64 mm) minimum. Those serving combinations of pressure sterilizer exhaust connections shall be sized in accordance with Table 18-29-713.11.3.

Table 18-29-713.11.3
Stacks Sizes for Pressure Sterilizers (Number of Connections of Various Sizes Permitted to Various- Sized Vent Stacks)

Stack Size (inches)	Connection Size
	3/4"	1"	1 1/4"	1 1/2"
1 1/2 a	3 or	2 or	1	–
1 1/2 b	2 and	1	–	–
2 a	6 or	3 or	2 or	1
2 b	3 and	2	–	–
2 b	2 and	1 and	1	–
2 b	1 and	1 and	–	1
3 a	15 or	7 or	5 or	3
3 b	1 and	1 and 5 and	2 and	2 1

 

For SI: 1 inch = 25.4 mm.

a.   Total of each size.

b.   Combination of sizes.