Check out Safety Emporium for your N95, N99, and face shield needs.
Date: Thu, 28 Oct 2010 14:55:20 -0400
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: ILPI <info**At_Symbol_Here**ILPI.COM>
Subject: Re: Lab safety showers
In-Reply-To: <AANLkTin2B52Ufb_4UmTcYvB_57WgDY-CT27jKRzh70ua**At_Symbol_Here**mail.gmail.com>
Wow, thanks for sharing.
That one is a poster child for Bad
Regulations.
1. Let's say the berm encompasses
a 4' x 4' area around the shower. That's 16 square feet, one inch
high, for a volume of 1.33 cubic feet = 10 gallons. Under ANSI
Z358, showers must put out at least 20 gallons per minute. And
that shower is likely to flow for 5, if not 15 minutes. So the
berm is essentially useless.
Now, if the reg is
calling for a berm that say, stretches across an entire hallway or
doorway - heck, or just around the drain itself, that might work by
flooding the rest of the building, as all it does is make the floor
drain non-functional. Plugging the floor drain permanently is an
easier solution.
2. The amount of hazardous
material on a victim is going to be so exceedingly small and so diluted
in the drains that it boggles the mind. Seriously - you get what,
10 mL of concentrated acid on you and that washes down the drain with
100 gallons of water? Yeesh. And if the stuff was so nasty
toxic that it is a hazard even that dilue, this city review department
thinks it's better to spread the hazmat all over the building and down a
couple floors onto various objects and people than it is to send it down
the drain.
3. When you're blinded by something
and trying to find a shower on foot or on a wheelchair, even that 1"
sloped bump is a barrier. And no doubt a trip hazard the rest of
time no matter how well it's marked with floor
tape.
Rob Toreki
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Safety Emporium - Lab & Safety Supplies featuring brand
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On Oct 28, 2010, at 2:31 PM, Betsy
Shelton wrote:
I am currently involved in construction of two new
laboratories and was instructed by the city commercial building review
department to include a 1" high curb around the shower area to keep
hazmat from entering the floor drain in the event of a spill.
Also, the curb has to be sloped on both sides to allow
accessibility.
--
Best regards,
Betsy
Shelton
512.636.1905
retrosynthesis**At_Symbol_Here**gmail.com
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