[RE-wrenches] Acid containment

Mon Mar 30 10:37:21 PDT 2015

If you call up a chemical resistant chart the options are not huge PVC is
good that's why battery vents are PVC.

On the EDPM:  you fold & only cut up high! I was thinking on this and you
could lay the EDPM down folded up & tacked on the back & sides and then lay
down a sheet of plywood to "protect" the EDPM from getting damaged as you
move your battery bank into place, then pull the front EDPM up, attach the
front panel and secure the EDPM to the upper inside front panel. It's like
origami or making an envelope out of a flat sheet of paper.

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Dana Orzel 

Great Solar Works, Inc -  NABCEP # 051112-136

E - dana at solarwork.com  - Web - solarwork.com 

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From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On
Behalf Of frenergy
Sent: Monday, March 30, 2015 11:19 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Acid containment

Kirpal, Allen, Dana, Benn

        Yes, I'm curious about sealing laps, joints, corners, etc also.
I've seen the PVC shower pan material...we'll see if its wide enough for our
application, I always banked on about 3" up the side of a battery box would
hold many gallons of acid.   Benn, I did a search on this in the Wrench
archives and someone mentioned the spray liner would soften (and then fail?)
over time when exposed  to acid.

Bill

----- Original Message ----- 

From: Benn Kilburn <mailto:benn at skyfireenergy.com>  

To: RE-wrenches <mailto:re-wrenches at lists.re-wrenches.org>  

Sent: Monday, March 30, 2015 9:48 AM

Subject: Re: [RE-wrenches] Acid containment

Allan,

How would you deal with a seam that happens to lay within the containment
area?  Do you seal/adhere it somehow? With what?   Or do you find that you
can get the liner sheets large enough that you just 'stuff it in' (for lack
of a better term), and then in the corners do you just double it over to
make a tight fit? Or make cuts in the corners...?

Thanks,

Benn Kilburn

SkyFire Energy Inc. 

780-906-7807

On Mar 30, 2015, at 10:26 AM, Allan Sindelar <allan at sindelarsolar.com>
wrote:

Bill,
We have lined plywood boxes with either EPDM roofing membrane or vinyl pond
liner, depending on local availability, and both have worked well. Being a
flexible sheet, it is folded up the sides and stapled above the containment
zone.
Allan

Allan Sindelar
 <mailto:allan at sindelarsolar.com> allan at sindelarsolar.com
NABCEP Certified PV Installation Professional
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder (Retired), Positive Energy, Inc.
505 780-2738 cell

On 3/30/2015 10:03 AM, frenergy wrote:

Fellow Wrenches, 

       I just called Tap Plastics hoping they would solve my problem of
battery acid containment within a plywood battery box.  I was surprised by
their response that the acrylic was not impervious to acid and polyethylene
would not work because sealants nor caulking adhere to it properly.  They
did not have anything that would work. 

       I've used those individual battery boxes from an auto parts store
(~$12/each) but they take up more space than just the batteries.  Has anyone
ever used ice dam underpayment, like Grace? Better idea? 

Thanks for any advice, 

Bill 
Feather River Solar Electric 

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