DCHAS-L Discussion List Archive
Date: Fri, 3 Dec 2010 17:02:01 -0500
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From: ILPI <info**At_Symbol_Here**ILPI.COM>
Subject: Re: OHSA/NIOSH Permissible limits
In-Reply-To: <AANLkTimx-3P2SS3xzQWcQsV6JGNGdHTTtfHTzc7RWXKj**At_Symbol_Here**mail.gmail.com>
I sense the toxicologists
on the list getting all atingle here. Prepare for an avalanche of
replies! I'll leave the details of why the two organizations came
up with different numbers to others (short answer - different methods,
different studies, different criteria etc.)
The
best choice from any perspective is 0 ppm, and after that ALARA - As Low
As Reasonably Achievable. See
http://www.ilpi.com/msds/
ref/alara.html and the references therein for more on the ALARA
concept.
Rob
Toreki
=======================================================
Safety Emporium - Lab & Safety Supplies featuring brand
names
On Dec 3, 2010, at 4:22 PM, Jim Tung
wrote:
Hello, all:
When the NIOSH pocket guide has
different permissible limits (NIOSH versus OSHA), which is the better
one to follow?
For example, benzene's limit for NIOSH is 0.1 ppm
(10 hr workday), while OSHA's limit is 1 ppm (8 hour workday.)
Why the difference? =46rom a legal perspective, which is a better
choice?
Thanks in advance for any advice you might give;
obviously, any advice people might give is non-binding, you're not
responsible, legal mumbo-jumbo, blah, blah.
Cheers, Jim
Tung
Lead Hazardous Waste Coordinator
Obiter Research
LLC
Champaign, IL
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