Safety Last

[Kitten]

I just wanted to make people aware of potential safety concerns surrounding the new and old equipment.  I have been told that this is of low concern as it will be unlikely to make people join the group, but I'd rather bring this to everyone's attention.

Eye wash station - Now that we have metal working as well as our normal wood working equipment and the general plethora of chemicals. I believe it's time we acquire an actual eye/face wash station and plumb it in within 10 seconds of the shop area, it's all too easy to get a chip or chemicals in the eyes while working.

E-Stop for lathe, mill, and mini lathe - I consider this to be a very urgent thing, it should not cost a fortune but the brass tacks of it is we would basically need:

E-Stops: ebay item# 370497654259 - Ideally you'd want 2 E-Stops per machine wired NC in series so if any is hit it disconnects power.

30A Contactor: ebay item# 181023963807 - This is intended to interrupt the flow of electricity if any of the e-stops are hit.

Reset button: ebay item# 350040793332 - Push to reset the trip condition

Line indicators: ebay item# 320855093218 - We should have 2 to indicate the presence of power on each of the hot lines

Terminal Strip: ebay item# 160740368985 - This is required to wire the e-stops to the contactor 

Enclosure: ebay item# 321015671629 - This is to house the contactor, indicator, push to reset button.

SOOW Cable: 14awg SOOW or similar cable to run to the e-stop boxes.

14AWG THHN: 2 colors of thhn for contactor wiring.

THHN Wire: Appropriate size THHN to run from contactor to boxes and or machines.

Respirator with acid gas filters: Respirator for pcb etching, the solution fumes acid as well as atomized acid from the agitation.

Long Nytrile Gloves: Gloves to provide protection from the acid.

Nytrile Apron: Apron to provide splash protection.

Chemical Splash Goggles: Provides splash protection from acid an various chemicals around the shop.

While this may seem like an unreasonable cost at this time, safety equipment really pays off when needed. I do feel that we really need E-Stops for the two lathes, and mill.  These tools are quite dangerous and mistakes do happen, E-Stops are designed in a way that any limb can activate them and cut power unlike switches an such that require some dexterity to operate. I personally believe that we will acquire a higher caliber of member if we show that there has been an effort to make our space as safe as possible. 

[Joe Ferguson]

Great concerns, looks to be good ideas for possible solutions. The effort so far is greatly appreciated. You / Someone should categorize the stuff we need (Chemical Safety, Lathe Safety, Mill Safety, etc) and add up the cost of each category and report back outlining the items like you have already, but with category and cost. While we wouldn't be able to go buy all these items at once, we can put them on the wiki / website and they can be purchased as needed. I know a lot of people already go buy small stuff we need every week and likely wouldn't mind chipping in on safety stuff, I think the barrier has been knowing WHAT to buy. If we have all outlined on the website it would be easier for all members to see. 

If someone would like to compile the rest of the info, just shoot it to me and I can take care of getting it on the wiki if you don't want to hassle with that.

Thanks,

--
- Joe Ferguson
http://www.midsouthmakers.org

[Danny Chamberlin]

What about adding a priority to the items (or at least what you think the priorty is :) )
Danny

[claudio donndelinger]

I'll start putting this in the wiki this weekend.

CD

[paul....@gmail.com]

I've seen places using either running water eyewash stations or, less often, bottled water eyewash stations. The bottled water should be a smaller investment, is it worth the savings?

P()

Sent via BlackBerry by AT&T

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From: Joe Ferguson <hal...@gmail.com>

Sender: midsout...@googlegroups.com

Date: Sat, 17 Nov 2012 12:10:50 -0600

To: midsout...@googlegroups.com<midsout...@googlegroups.com>

ReplyTo: midsout...@googlegroups.com

Subject: Re: [MidsouthMakers] Safety Last

[Kara Ferguson]

Bottled water eye stations typically have to be replaced every six months. The solution has a shelf life.

[Joe Ferguson]

Even with the shelf life, it may be cheaper over time than running plumbing. It may come down to a initial cost VS long term cost issue.

[paul....@gmail.com]

Long term, plumbing is worth it. But the move to the new space happened after I went into exile in Mississippi, so I haven't seen it and don't know if we're going to be there for a couple years.

P()

Sent via BlackBerry by AT&T

---

From: Joe Ferguson <hal...@gmail.com>

Sender: midsout...@googlegroups.com

Date: Sat, 17 Nov 2012 12:33:00 -0600

[Joe Ferguson]

We will be there until at least July 2014

[Kitten]

Possible Funding sources: Laser Cutter Fund. Last i heard we were still a couple grand off from this goal, what's the harm in taking 200 or 300 out to make the group a safer place. I don't feel this will impact the overall goal too much.

Chemical Safety: 

Gloves: Grainger #4T428 Sz 10, 22 Mil thickness - $11.65 (Priority #2)

Apron: Grainger #4T299 Sz L, 45" Long - $14.10 (Priority #2)

Goggles: Grainger #3RYE9 - $6.45 (Priority #2)

Goggles: Grainger #2KFX8 - $25.35 (Priority #3)

Respirator Medium: Grainger #3PB40 - $39.45 (Priority #3)

Respirator Large: Grainger #3PB41 - $39.45 (Priority #3)

Filters: Grainger #4JG12 - $30.75 (Priority #3)

Total: $167.20

Metal Working Safety: (PRIORITY #1) 

E-Stops: Ebay #370497654259 - $6.99x6

Contactor: Ebay #181023963807 - $33.90

Reset Button: Ebay #350040793332 - $6.61

Indicators: Ebay #320855093218 - $13.90

Terminal Strip: Ebay #160740368985 - $3.99

NEMA Box: Ebay #321015671629 - $29.03

SOOW Cord and Misc parts like fuse an fuse holder: $50

Total: $179.37

Grand Total excluding eye wash station: 346.57

[Joe Ferguson]

Thanks for adding more info!

[Kara Ferguson]

E-stops are purchased.

--

Kara Ferguson

Curious Tales of a Southern Life
www.KaraFerguson.net 

Midnight Screaming: for your dark fiction addiction
www.midnightscreaming.com

@KaraFerguson

[Kara Ferguson]

The e-stops will be here between 12/5 and 12/21. Consider that my giftmas present to the space.

[Kitten]

Kara, Thank you very much

[Kitten]

I should have noted earlier that the E-Stop system proposed is a line voltage method, we may want to consider going to a 24V system but that'd require a 30A 2 pole minimum 24v coil contactor with aux contacts and an additional 30 dollar 24 volt din rail power supply but would be marginally safer if someone cut through a cord somehow. In the proposed system there would be a 1/4 amp fuse and fuse holder in line with the hots as well as a ground wire in the actual wiring. The purchased E-Stops are fine for either method and are in plastic enclosures so a shock risk would only be present on damaged wiring. 

I personally don't feel at this time the added expense is warranted but I figured that it should be up for a group opinion/vote.

[Ed Stafford]

Hey.. just an aside on the wiring.. if it's a 30-Amp circuit, I think you'll want to use 10ga copper wiring.  14ga is normally for 15-Amp circuits.. Granted, I only really know house wiring so if I'm wrong, please speak up.

On Sat, Nov 17, 2012 at 4:15 PM, Kitten <ske...@gmail.com> wrote:

I should have noted earlier that the E-Stop system proposed is a line voltage method, we may want to consider going to a 24V system but that'd require a 30A 2 pole minimum 24v coil contactor with aux contacts and an additional 30 dollar 24 volt din rail power supply but would be marginally safer if someone cut through a cord somehow. In the proposed system there would be a 1/4 amp fuse and fuse holder in line with the hots as well as a ground wire in the actual wiring. The purchased E-Stops are fine for either method and are in plastic enclosures so a shock risk would only be present on damaged wiring. 

I personally don't feel at this time the added expense is warranted but I figured that it should be up for a group opinion/vote.

--
Ed Stafford

[Kitten]

The 16 or 14 AWG wire would only run from the coil on the contactor through the NO aux contacts as well as all of the NC E-Stop contacts in series. 10AWG would come into the top of the contactor main contacts and then go out the bottom o the main contacts to all protected outlets.  That way if someone hits any of the E-Stops the contactor opens as well as the aux contacts and prevents the contactor from re-energizing once the fault is cleared until you hit the push to reset button which is wired as NO to power.  Pressing reset energizes the coil and closes the main contacts and aux contacts allowing it to remain energized when the reset button is released.

I apologize for any confusion caused by my poor description.

[Ben Eishen]

Picked up the indicator lamp. 
--
Ben S. Eishen
773.234.7436 | b...@eishen.com