Safety Alert please read!

[Nemo]

FYI, here is an email I just received.

Dear FIRST Team Member,

Clippard has been made aware of an incident where the white
polypropylene air tank had burst. There are several factors that
could have led to this and Clippard is evaluating the issue. We have
yet to replicate the occurrence at a pressure below 700 psi, and
believe this to be an isolated occurrence. However, working with
tanks under pressure can lead to dangerous circumstances and
precautions must be taken.

Until a full evaluation is complete and in the interest of safety,
Clippard recommends that your team dispose of their current tanks and
replace them with the SS-1154, the 32in3 metal version, at no charge.
To replace your tank, reply to this email and include your team name
and number of tanks to be replaced. We apologize for any
inconvenience and wish you all success in your upcoming competition.


Sincerely,

Clippard Instrument Laboratory, Inc.

[Jon Stratis]

You really can't beat that for customer service!

[dcarr]

We have at least 8 of the Clippard Tanks...until we know for sure if they're actually bad, I think that if anything we'll just ask for the minimum number of replacements that we actually need on robots this season. If they are indeed safe, the weight savings are worth it.

[zeldathegood]

Does someone have the email address to request replacement air tanks from Clippart?

Thanks!

[Team3266Spencer]

One of our air tank's was cracked on the "rim" right out of the box. We're glad we spotted it before we put it on to our robot all thanks to this thread. Thank you, and were glad everyone's okay!

[Al Skierkiewicz]

Spencer,
I bet that the manufacturer will want to know or see that defect.

[ToddF]

One legal way to provide some measure of protection of your tanks from external damage, or shrapnel containment would be to use expandable mesh sleeving. This is the stuff usually used for wire bundling, and which also can be used to make pneumatic muscles.

McMaster Carr has it in various colors in a size suitable for slipping your tank inside.
ID range: 1 1/2" to 3 1/2"
Part number: 9284K419
Price: $14.53 for 10 feet.

[Al Skierkiewicz]

Todd,
While this product might contain the broken parts, I would not want to mislead people into thinking this a good fix. This mesh is designed for something entirely different.

[jeser#1772]

this picture describes how my team are handling the air cylinders after this tread


If you have definitive decisions please let us know, we are in Brazil ... swap or buy new cylinders would lose more than 2 weeks

Jeser
1772

[JohnChristensen]

I know this thread is old news, but I want to caution teams with these tanks still on hand. One of our mentors attempted to install a 90 degree fitting (plastic -- from FIRST Choice) on one of our tanks today, he was only able to turn the fitting about 400 degrees before the rib on the port cracked open. It was a hairline crack, hardly even noticeable to the eye, however it extended the entire length of the threads and was about an 1/8" deep. Since he was watching for this to happen, the flaw was discovered before a real problem occurred. Our plan had been to test each tank with shop air (~140psi) prior to use, after seeing how fast these crack we are moving on to other tanks. If you are going to continue using these tanks, please do so with caution.