Grigri FAIL / inversion when loaded from below

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Petzl has a specific warning on their website that certain models of the Grigri belay device can potentially fail if they receive a large load from below. Admittedly this would be a very unusual situation, but there are some cases when it could happen.
Here's a video clip made by Kevin Govan showing the mechanism of failure.
(Actual fail happens about 2:00.)

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Комментарии
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It has happened to me while I was setting in my home gym, thankfully, the rope didn't slide out, it passed behind the notch but stayed (I don't know how) engaged (also, I had knots tied under me, even if it slept, it would have stopped) but that was pretty scary

( I apologize in advance if my English is not perfect)

LilBoutentrain
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why would you give a firemans belay w a grigri lmao

ericmichaelmac
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I imagine this becomes more likely the older and more worn the Grigri is?

Mike-ozcv
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The grigri is clearly an excellent tool for use in mountain terrain and when used properly and with respect to its known failure modes is extremely safe....but the problem with moving parts is that they introduce a wider spectrum of configurations over which new failure modes can creep in. That is the trade off for devices of this kind. Personally, I do not love the feel of a grigri enough to carry one but I am not dogmatic about it. The added benefit of my abstention is that I don't really need to keep track of all these kinds of dangers. I really appreciate the clarity of this video. Thank you for posting it!

arnoldkotlyarevsky
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If you completely misuse the device with a rope that’s too skinny the device can fail? Who would’ve thought

nsanborn