Safety Shower and Eyewash Philosophy 3

[sshep]

My Friends,

We are building a multiple unit chemical complex. I am working on the facilities team which is handling the common systems, including the potable water and safety showers/eye baths.

We have two different designs from two different units. The first design is simply a distribution to the safety showers via our potable water system. The second design is a circulating system back to a tank which includes dosing- the intent is to insure the water does not become stagnant and unhealthy. My only experience is in older plants with a normal distribution, this circulating option is new to me.

Are there any standards or advice which you can offer to help make a decision? If the decision is made purely on cost, then a circulating system makes no sense.

best wishes,
sshep

 

[pennpiper]

Check OSHA (Occupational Safety & Health Administration)

prognosis: Lead or Lag

 

[sshep]

Thanks for the reply, but I was hoping for something more specific with respect to a reference.

Do you know if there a specific OSHA regulation (CFR19??.???) or API std that I should be looking at?

best wishes,
sshep

 

[danw2]

According to my notes from a meeting several years ago that involved wireless notification to a control room of eyewash station useage, the ANSI standard addressing emergency eyewash and shower equipment mentioned was ANSI [Z]358.1-2004.

I don't have a copy and never read one, so I'm not sure whether it covers your interest or not.

 

[786392]

Dear,

Probably this replies your querry

http://www.grainger.com/Grainger/static/emergency-shower-eye-wash-station-requirements-120.html

Best Regards
Qalander(Chem)

 

[786392]

Some more links

http://www.stanford.edu/dept/EHS/prod/mainrencon/Labdesign/Section_1-2_Safety_Eyewash_Showers.pdf

http://www.ehs.unr.edu/Documents/Eyewash-ShowerStations.pdf

http://www.professionalequipment.com/guide-to-eyewash-shower-reqs/articles/

Best Regards
Qalander(Chem)

 

[Latexman]

sshep,

The circulating system also allows filtration to continuously remove solids and controlling the temperature to prevent scalding in summer and to prevent freezing in winter. The water can be sterilized with UV light too. There are many advantages. Unfortunately, it is more expensive. Some companies standardize on the circulating one.

Have you ever run a dead ended SS/EB in an old plant with galvanized pipe? You had to clear the rust or let the water cool before you could use it.

Good luck,
Latexman

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[CFen]

The spec you want to look at is ANSI Z358.1 2009. That is the latest and greatest referring to safety showers and eye washes. There are a number of companies out there that have products to help you do exactly what you are thinking about (check out Haws Co). They were very helpful. One very important aspect that is now included in the code is that the water must be temperate (between 60-100°F).