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713.9.3 Trap seal maintenance.
A water supply pipe not less than 1/4 inch (6.4 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 (76 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.
713.10 Sterilizer vents and stacks.
Multiple installations of pressure and nonpressure 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.
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.
713.11 Sterilizer vent stack sizes.
Sterilizer vent stack sizes shall comply with Sections 713.11.1 through 713.11.4.
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 713.11.1.
Stack Size (inches) | Connection Size | ||
1 1/2 | 2" | ||
Stack Size (inches) | Connection Size | ||
1 1/2 | 2" | ||
1 1/2
a | 1 | or | 0 |
2
a | 2 | or | 1 |
2
b | 1 | and | 1 |
3
a | 4 | or | 2 |
3
b | 2 | and | 2 |
4
a | 8 | or | 4 |
4
b | 4 | and | 4 |
For SI: 1 inch = 25.4 mm.
a. Total of each size.
b. Combination of sizes.
713.11.2 Boiling-type sterilizers.
The size of a sterilizer vent stack shall be not less than 2 inches (51 mm) in diameter where serving a utensil sterilizer and not less than 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 713.11.1.
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 713.11.3.
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.
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