>
> acid water hah i work around ph 2.38 water liming it during the summer.
> insane how fast it will eat steel out
>
fre 2019-05-24 klockan 23:38 -0700 skrev Chuck Guzis via cctalk:
> On 5/24/19 9:12 PM, Carlos E Murillo-Sanchez via cctalk wrote:
>
> > Sulfuric acid is hard to wash off; the amount that made it to the
> > room
> > must have been pretty small, otherwise people couldn't be allowed
> > in.
> > And,
On 5/24/19 9:12 PM, Carlos E Murillo-Sanchez via cctalk wrote:
> Sulfuric acid is hard to wash off; the amount that made it to the room
> must have been pretty small, otherwise people couldn't be allowed in.
> And, if it was bad enough to corrode boards, imagine what that would do
> to your lungs
Mark Matlock via cctalk wrote:
The discussion on raised floors in data centers reminded me of an
interesting past experience. My company had installed its first supervisory
process control system in an enzyme plant. The plant had been around for quite
some time and the process control syst
Mark Matlock via cctalk wrote:
The discussion on raised floors in data centers reminded me of an
interesting past experience. My company had installed its first supervisory
process control system in an enzyme plant. The plant had been around for quite
some time and the process control syst
> On May 24, 2019, at 12:35 PM, Mark Matlock via cctalk
> wrote:
>
> The discussion on raised floors in data centers reminded me of an
> interesting past experience. My company had installed its first supervisory
> process control system in an enzyme plant. ...
>
> The only bad thing a
The discussion on raised floors in data centers reminded me of an
interesting past experience. My company had installed its first supervisory
process control system in an enzyme plant. The plant had been around for quite
some time and the process control system was part of a retrofit of the
I should have been more clear in my last response. The 2x2 grid of the floor
tiles does not extend to the floor, but to an intermediate layer with wider
spacing of the supports at the floor level.
On 5/23/19 5:25 PM, Craig Ruff via cctech wrote:
I should have been more clear in my last response. The 2x2 grid of the
floor tiles does not extend to the floor, but to an intermediate layer
with wider spacing of the supports at the floor level.
Thank you for the clarification.
I expected so
pic Posts<mailto:cctalk@classiccmp.org>
Subject: Re: Raised Floors
> Purdue's insurer REQUIRES fire sprinklers in data centers. And it's not
> atypical from what I've heard. They are all dry, pre-action systems, which
> eliminate most of the danger of it accidentally dump
Purdue's insurer REQUIRES fire sprinklers in data centers. And it's not
atypical from what I've heard. They are all dry, pre-action systems, which
eliminate most of the danger of it accidentally dumping water. It's
unlikely that with a dry pipe, pre-action system water will be dumped
somewhere
On 5/22/19 9:41 AM, Grant Taylor via cctalk wrote:
Both of the data centers / raised floors in my office have fire
sprinklers. I don't know if they lines are charged or dry. (I'll
inquire.)
I received an answer this morning stating that the fire sprinklers in
the DC are "charged with air an
> On May 22, 2019, at 11:00 AM, cctech-requ...@classiccmp.org wrote:
> From: Grant Taylor
>
> On 5/21/19 5:33 PM, Craig Ruff via cctech wrote:
>> The NCAR Wyoming Supercomputer Center has raised floors of about 20 feet.
>
> Did the support posts go all the way down? Or was there some sort of
On 5/22/19 5:46 PM, Craig Ruff via cctech wrote:
It was moderately open below the floor, there are columns that
support the grid.
The raised floor at work has posts (I guess you could call them columns)
at the corner of every tile that run down to the floor. This is why I'm
asking if the pos
On 5/22/19 9:08 AM, Patrick Finnegan via cctalk wrote:
Purdue's insurer REQUIRES fire sprinklers in data centers.
Both of the data centers / raised floors in my office have fire
sprinklers. I don't know if they lines are charged or dry. (I'll inquire.)
The local fire department does a walk
On Wed, 22 May 2019, Chuck Guzis wrote:
So how are data centers cooled with water now? Does the water cool
coldplates directly?
Sort of, see for example the Rittal LCP system.
I've had only a couple of instances where cooling water was used. In
All current high-density rack systems need l
On Wed, May 22, 2019 at 3:43 AM Jim Manley via cctalk
wrote:
> Someone should be sued and go to prison for signing off on permits that
> would allow water to get anywhere near a DC - it's a violation of the
> National Electric Code, for starters. If anyone sees something like that,
> it should b
On 2019-05-22 10:00 a.m., Paul Koning via cctalk wrote:
On May 22, 2019, at 6:57 AM, Stefan Skoglund via cctalk
wrote:
ons 2019-05-22 klockan 08:45 + skrev Wayne S via cctalk:
...
Funny, but Halon is outlawed and having it around did seem to bother
them. It was replaced with some othe
> On May 22, 2019, at 6:57 AM, Stefan Skoglund via cctalk
> wrote:
>
> ons 2019-05-22 klockan 08:45 + skrev Wayne S via cctalk:
>> ...
>> Funny, but Halon is outlawed and having it around did seem to bother
>> them. It was replaced with some other gas system that i can't
>> remember the n
On Wed, 22 May 2019 at 10:34, Stefan Skoglund via cctalk
wrote:
> Halon should be completely and fully illegal in civilian installations.
In 1990 or 1991 I was inside a computer room when somebody
accidentally pushed an elbow into the fire emergency button.. and the
halon went off. Big room, many
ons 2019-05-22 klockan 08:45 + skrev Wayne S via cctalk:
> All true. Just sayin' that water can get into the DC even when it's
> not intended.
> When fighting a fire in another part of a structure, the water may
> find it's way into the DC.
>
> Not sure about not allowing water to get near
PS.. Sorry about the top posting. I'm old and i forgot.
Wayne
> On May 22, 2019, at 1:45 AM, Wayne S wrote:
>
> All true. Just sayin' that water can get into the DC even when it's not
> intended.
> When fighting a fire in another part of a structure, the water may find it's
> way into the
All true. Just sayin' that water can get into the DC even when it's not
intended.
When fighting a fire in another part of a structure, the water may find it's
way into the DC.
Not sure about not allowing water to get near a dc, can you explain that
statement?
The 2 Liebert a/c units that coo
Have to rephrase what i said about the Liebert units being water cooled. They
used water for humidity control not for cooling. They used regular refrigerant
for that.
Wayne
> On May 22, 2019, at 1:50 AM, Wayne S wrote:
>
> PS.. Sorry about the top posting. I'm old and i forgot.
>
>
> Way
ons 2019-05-22 klockan 01:42 -0600 skrev Jim Manley via cctalk:
> No firefighter in their right mind is going to knowingly pump a drop
> of
> water anywhere near or in the direction of a data center, let alone
> into
> it. That's why they're equipped with Halon or other oxygen
> displacement,
> co
No firefighter in their right mind is going to knowingly pump a drop of
water anywhere near or in the direction of a data center, let alone into
it. That's why they're equipped with Halon or other oxygen displacement,
cooling, and flame suppression systems, and the FDs are equipped with
appropriat
.
From: cctech on behalf of Craig Ruff via cctech
Sent: Tuesday, May 21, 2019 4:33:07 PM
To: cct...@classiccmp.org
Subject: Re: Raised Floors
The NCAR Wyoming Supercomputer Center has raised floors of about 20 feet. The
auxilary cooling and PDUs are
On 5/21/19 5:33 PM, Craig Ruff via cctech wrote:
The NCAR Wyoming Supercomputer Center has raised floors of about 20 feet.
Did the support posts go all the way down? Or was there some sort of
grid work that supported the raised floor above an open area that
contained the PDUs?
I ask becaus
The NCAR Wyoming Supercomputer Center has raised floors of about 20 feet. The
auxilary cooling and PDUs are installed down there. Needless to say, you don't
pull a floor tile there unless you are on the facility staff!
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