In medical gas piping, how is diversity calculated?

In medical gas piping, the calculation of diversity is crucial for ensuring that the system is designed efficiently to meet the actual demand without oversizing the components. The correct method involves using simultaneous use factors provided in a table. This approach references established guidelines and empirical data that indicate how multiple outlets or stations are likely to be utilized at the same time.

These factors account for the fact that not all medical gas outlets will be in use simultaneously at full capacity, allowing for a more accurate assessment of demand and reducing unnecessary waste in the system design. By applying these use factors, designers can calculate a more realistic estimate of the total gas flow required, which helps in optimizing the pipeline size, pressure regulation, and overall system performance.

Other methods such as timing usage during peak hours or averaging the number of outlets may not accurately reflect the actual use of medical gases. Likewise, direct measurement of flow does not account for the simultaneous nature of outlet usage, which is central to determining diversity. Thus, relying on the straightforward and systematic use of simultaneous use factors allows designers to create safer, more effective medical gas systems.