Does anyone know if ANSI Z358 where they suggest tepid water for emergency fixtures will ever become code and be enforced? Do any of your customers require tepid water for emergency fixtures, despite the added cost?
I think it's smart to provide tepid water regardless if the code requires it or not. How many people do you know is going to be comfortable going under an emergency shower and have cold water dumped on them? It's not going to be much money to add a thermostatic mixing valve close to the fixture. Besides, in most cases, there's a hot water line available close to it.
Any suggestions for a point-of-use water heater on a combination shower/eyewash? I looked at the Eemax Series 12, http://www.eemax.com/SeriesTwelve030825.pdf , but the power requirements are a little much.
If you look at the 2002 Accumulative Supplement to the International Plumbing Code there is a reference to emergency fixtures
'Section 411.1 Change to read as shown:
411.1 Approval. Emergency showers and eyewash stations shall conform to ANSI Z358.1.'
If you are in an area under the jurisdiction of the 2002 IPC than it seems they would be enforcing ANSI Z358.1
I typically use a point of use tempering valve specifically designed for safety showers, rather circulating tepid water, unless you have a lot of safety showers. Speakman's web site has several valves.http://www.speakmancompany.com/products.ph...on=3&cat=39
Does the design for a tempered water safety shower sytem usually consist of point of use thermostatice mixing valves or do most of you run a tempered water recirculation system?
There are some corporations that do require tepid water. For example 3M requires it at ther facilities. We did a large campus for them in the late 80's that used a tempered water distribution system to serve all the showers and eyewash units in the laboratories.
Don't know when or if it become code and I don't have any clients who require tepid water. Ussually I approach the client about the benefits of tepid water and we most always leave it in the design unless it gets "value engineered" :roll: out.
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