From:
Samuella Sigmann <000017d7b6a35b3a-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject:
Re: [DCHAS-L] [External] [DCHAS-L] History Lesson-Tempered Water Required for Eyewash/Safety Showers..
Date:
Dec 7, 2022 00:27 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID:
<71f8a3e0-41ea-5a0a-c0fa-488a0bffcf4c**At_Symbol_Here**appstate.edu>
In-Reply-To:
<CAAszpkwvWMv5Cu7tOJWbKNVsURd3zdYxHKUy-nmBeXemn+5+bw**At_Symbol_Here**mail.gmail.com>
Just a fine point. Tempered water is not the same a tepid water to a
plumber.
As
defined by ANSI Z358.1-2014, tepid refers to, “A flushing fluid
temperature
conducive to promoting a minimum 15 minute irrigation period. A
suitable range
is 16 - 38º C (60 -100º F).”11 When the topic came up
the next time
in the weekly meeting, the plumber said that the mixing valves
had been set at
104 °F. I pointed out that that temperature was much too high
for emergency safety
equipment water. The plumber had looked up the temperature for
“tempered” water,
which according to the International Plumbing Code is, “Water
having a
temperature range between 85°F (29°C) and 110°F (43°C)”.12
Sigmann -
https://pubs.acs.org/doi/full/10.1021/acs.chas.2c00008
On 12/6/2022 4:16 PM, Margaret Rakas
wrote:
Hi all--
I know that tempered water has been required for eyewashes
and safety showers for a number of years..and I know this
group has a good memory. WHAT YEAR was the ANSI requirement
for 60-100F water made effective?
thank you all so much...
Margaret
--
Margaret A. Rakas, Ph.D.
Lab Safety & Compliance Director
Clark Science Center
413-585-3877 (p)
