Re: [RE-wrenches] Battery based hydrogen incidents

4953 Cell: 707-321-2937 Office: 707-789-9537 Fax:707-769-9037 From: Darryl Thayer To: RE-wrenches Sent: Wed, December 15, 2010 9:14:15 AM Subject: Re: [RE-wrenches] Battery based hydrogen incidents Yes they happen, Robb Cary of Battery Testing Co. has

Re: [RE-wrenches] Battery based hydrogen incidents

30+ years experience in solar off-grid & battery backup systems, and 10 years before that designing and building heavy industrial battery-powered vehicles that were powered by tons of L-16 traction batteries.  Here has been my experience:   1.  Large industrial vehicle in corner of shop on charger,

Re: [RE-wrenches] Battery based hydrogen incidents

To: re-wrenches@lists.re-wrenches.org Sent: Thursday, December 16, 2010 7:52 AM Subject: Re: [RE-wrenches] Battery based hydrogen incidents These descriptions of battery explosions certainly drive home the point that one should always always wear protective gear when working on batter

Re: [RE-wrenches] Battery based hydrogen incidents

I can tie this for utter foolishness. Early in my off-grid days, a friend and I split a load of telephone company batteries. His hydro system would regularly boil off electrolyte in its season, so he checked fluid levels a lot. One time he left his flashlight in his cabin. But being a safety-meet

Re: [RE-wrenches] Battery based hydrogen incidents

;Allan Sindelar Sent: Wednesday, December 15, 2010 11:10 AM To: <mailto:re-wrenches@lists.re-wrenches.org>re-wrenches@lists.re-wrenches.org Subject: Re: [RE-wrenches] Battery based hydrogen incidents Knowledge of two incidents - sort of. About ten years ago a Hydrocap on an L16 blew ap

Re: [RE-wrenches] Battery based hydrogen incidents

than not venting your battery shed. From: Luke Christy Sent: Thursday, December 16, 2010 8:52 AM To: re-wrenches@lists.re-wrenches.org Subject: Re: [RE-wrenches] Battery based hydrogen incidents These descriptions of battery explosions certainly drive home the point that one should always

Re: [RE-wrenches] Battery based hydrogen incidents

These descriptions of battery explosions certainly drive home the point that one should always always wear protective gear when working on batteries. I have a story that may take the prize for the most foolish behavior yet described (thankfully I wasn't involved until the cleanup stage).

Re: [RE-wrenches] Battery based hydrogen incidents

t;I need to water these things?".. the system was a few years old.Dan BrownFoxfire Energy Corp.Renewable Energy Systems(802)-483-2564www.Foxfire-Energy.comNABCEP #092907-44 Original Message ---- Subject: Re: [RE-wrenches] Battery based hydrogen incidents From: "Joel Davi

Re: [RE-wrenches] Battery based hydrogen incidents

Davidson - Original Message - From: Dana To: 'RE-wrenches' Sent: Wednesday, December 15, 2010 8:10 AM Subject: [RE-wrenches] Battery based hydrogen incidents Ken - To meet the flow have run 2 and 3 fans to meet the flow. 2" output from the fan into a 4

[RE-wrenches] Battery based hydrogen incidents

Larry Crutcher Sent: Wednesday, December 15, 2010 12:35 PM To: RE-wrenches Subject: Re: [RE-wrenches] Battery based hydrogen incidents I was hesitant to reply because I surely will look foolish, but perhaps it may help someone in the future. I did something very stupid back in 2001 that cause

Re: [RE-wrenches] Battery based hydrogen incidents

H2S is slightly heavier than air, but I vent with the inlets on line with the tops of the battery, and the outlet at the highest point. If there is a lot of space around the bottom of the batteries, I might lower the inlets some, but not enough for the airflow to contribute to much cooling effec

Re: [RE-wrenches] Battery based hydrogen incidents

Solar, Larry Crutcher wrote: From: Starlight Solar, Larry Crutcher Subject: Re: [RE-wrenches] Battery based hydrogen incidents To: "RE-wrenches" Date: Wednesday, December 15, 2010, 1:35 PM I was hesitant to reply because I surely will look foolish, but perhaps it may help some

Re: [RE-wrenches] Battery based hydrogen incidents

H2S has a mole weight of 34 and Oxygen has a mole wt of 32 and nitrogen has a mole weight of 28   H2S will blend and not gravity seperate from air.  --- On Wed, 12/15/10, Jonathan Hill wrote: From: Jonathan Hill Subject: Re: [RE-wrenches] Battery based hydrogen incidentsTo: "RE-wrenches" Date: Wed

Re: [RE-wrenches] Battery based hydrogen incidents

orkmanship" every week at our service center. Larry Crutcher Starlight Solar Power Systems 928-342-9103 - Original Message - From: Kent Osterberg To: RE-wrenches Sent: Wednesday, December 15, 2010 10:21 AM Subject: Re: [RE-wrenches] Battery based hydrogen incidents

Re: [RE-wrenches] Battery based hydrogen incidents

acid in my eyes, thanks to splash resistant goggles, but lost all my clothes.  Darryl --- On Wed, 12/15/10, Randy Brooks wrote: From: Randy Brooks Subject: Re: [RE-wrenches] Battery based hydrogen incidents To: "RE-wrenches" Date: Wednesday, December 15, 2010, 12:48 PM Fello

Re: [RE-wrenches] Battery based hydrogen incidents

Ray-Is H2S lighter or heavier than air? Should it be vented from the top or bottom of the enclosure? Thanks. Jonathan Hill, solar applications engineerSierra Solar Systems563C Idaho Maryland RoadGrass Valley, CA 95945Celebrating our 30th year in solar!tech info and foreign orders:  (530) 273-6754 o

Re: [RE-wrenches] Battery based hydrogen incidents

I really think the real venting issue is H2S (hydrogen sulfide) gas, which is deadly at high enough concentrations, causes head aches at lower concentrations, and is just awful to smell at any concentration. I think you would have to literally design a battery box to explode to ever get to the 4

Re: [RE-wrenches] Battery based hydrogen incidents

belive anything, but seriously trust through action. > > From: re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kent Osterberg > Sent: Wednesday, December 15, 2010 10:21 AM > To: RE-wrenches > Subject: Re: [RE-wrench

Re: [RE-wrenches] Battery based hydrogen incidents

remember the situation, he called it a "learning experience", one he didn't wish to repeat. Dan --- On Wed, 12/15/10, jay peltz wrote: From: jay peltz Subject: Re: [RE-wrenches] Battery based hydrogen incidents To: "RE-wrenches" Date: Wednesday, December 15, 2010, 1

Re: [RE-wrenches] Battery based hydrogen incidents

14 years of battery bank experience. Witnessed results of one fire involving 4 strings of L16s at 48 volts. Fire was confined to battery storage area. Not from an explosion but overcharging a dead string. On a personal note, I have seen and felt the shock wave from an exploding 8D 30 years ago.

Re: [RE-wrenches] Battery based hydrogen incidents

Hi Dana, In 22 years of installing off grid systems I have never seen or heard of one, but then, we have always vented our battery based systems, even the VRLA type batteries.. Daryl Penobscot Solar Design > Hi Dana, > > I've been 16 years all offgrid, no reports that I know of. > > jay

Re: [RE-wrenches] Battery based hydrogen incidents

AM To: RE-wrenches Subject: Re: [RE-wrenches] Battery based hydrogen incidents Sounds like, in general, that the off-grid industry has been fortunate to not have hydrogen explosions. That's good. No explosions here either. But one shouldn't take that as evidence that it couldn't

Re: [RE-wrenches] Battery based hydrogen incidents

-wrenches.org Subject: Re: [RE-wrenches] Battery based hydrogen incidents Knowledge of two incidents - sort of. About ten years ago a Hydrocap on an L16 blew apart. Not our installation; I suspect that it became plugged up or overheated, as the array had been recently enlarged. Explosion was contained

Re: [RE-wrenches] Battery based hydrogen incidents

Osterberg wrote: From: Kent Osterberg Subject: Re: [RE-wrenches] Battery based hydrogen incidents To: "RE-wrenches" Date: Wednesday, Decembe

Re: [RE-wrenches] Battery based hydrogen incidents

ries could have resulted. > He has since relocated his batteries to a dedicated (and vented) battery > space. > > Dan > > > --- On Wed, 12/15/10, Kent Osterberg wrote: > > From: Kent Osterberg > Subject: Re: [RE-wrenches] Battery based hydrogen incidents > To

Re: [RE-wrenches] Battery based hydrogen incidents

Wed, 12/15/10, Kent Osterberg wrote: From: Kent Osterberg Subject: Re: [RE-wrenches] Battery based hydrogen incidents To: "RE-wrenches" Date: Wednesday, December 15, 2010, 11:21 AM Sounds like, in general, that the off-grid industry has been fortunate to not have hydrogen

Re: [RE-wrenches] Battery based hydrogen incidents

Sounds like, in general, that the off-grid industry has been fortunate to not have hydrogen explosions.  That's good.  No explosions here either.  But one shouldn't take that as evidence that it couldn't happen.  I don't believe this is a circumstance where it is better to be lucky than good. 

Re: [RE-wrenches] Battery based hydrogen incidents

I am on road today, would love to comment more.  maybe later Darryl --- On Wed, 12/15/10, Warren Lauzon wrote: From: Warren Lauzon Subject: Re: [RE-wrenches] Battery based hydrogen incidents To: "RE-wrenches" Date: Wednesday, December 15, 2010, 11:05 AM In the 30+ years th

Re: [RE-wrenches] Battery based hydrogen incidents

Dana, 25 yrs experience. No incidents. Dave From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dana Sent: Wednesday, December 15, 2010 11:10 AM To: 'RE-wrenches' Subject: [RE-wrenches] Battery based hydrogen inciden

Re: [RE-wrenches] Battery based hydrogen incidents

In the 30+ years that we have been in the solar business, we have never seen or even heard of a single one. From: Dana Sent: Wednesday, December 15, 2010 9:10 AM To: 'RE-wrenches' Subject: [RE-wrenches] Battery based hydrogen incidents Ken – To meet the flow have run 2 and

Re: [RE-wrenches] Battery based hydrogen incidents

Me neither, in 30 years! Jonathan Hill, solar applications engineerSierra Solar Systems563C Idaho Maryland RoadGrass Valley, CA 95945Celebrating our 30th year in solar!tech info and foreign orders:  (530) 273-6754 order line: (888) ON-SOLAR (US only)   FAX:  (530) 273-1760e-mail:  

Re: [RE-wrenches] Battery based hydrogen incidents

Hi Dana, I've been 16 years all offgrid, no reports that I know of. jay peltz power On Dec 15, 2010, at 8:10 AM, Dana wrote: > Ken – > > To meet the flow have run 2 and 3 fans to meet the flow. 2” output from the > fan into a 4” header with a matching 2.5” inlet as far away on the lowest >

[RE-wrenches] Battery based hydrogen incidents

Ken - To meet the flow have run 2 and 3 fans to meet the flow. 2" output from the fan into a 4" header with a matching 2.5" inlet as far away on the lowest portion of the battery box. In 22+ years in off grid installations I have yet to see or even hear of one hydrogen explosion. I get