High pressure flex hose failure videos?
High pressure flex hose failure videos?
(OP)
I have been hired to do some safety engineering work. In my exploration of the work site I have found numerous high pressure (up to 6000 psig) flex hoses without restraints. These are high quality stainless convoluted or stainless/PTFE hose, but many are decades old. They receive a visual inspection yearly but that doesn't mean much to me. My experience is that these inspections are pencil whipped.
I have suggested they immediately implement a requirement to install restraints on hoses being used at 150 psig or more. (This is the industry standard.) It has been met with a little resistance by those resistant to any changes. So I need to prove to these guys how serious this isse
can be.
I know I've seen an old video from the '60s where a high pressure stainless hose about 20' long fails and proceeds to destroy absolutely everything around it, including smashing cinder block walls. All the videos I can find on the Internet show hydrostatic failures, pull test failures, restraints actually working, or the gas being shut off immediately after failure (which wouldn't happen in a real failure.)
Has anyone else seen this video or know where I
might be able to get it? Or something similar? Thanks!!
I have suggested they immediately implement a requirement to install restraints on hoses being used at 150 psig or more. (This is the industry standard.) It has been met with a little resistance by those resistant to any changes. So I need to prove to these guys how serious this isse
can be.
I know I've seen an old video from the '60s where a high pressure stainless hose about 20' long fails and proceeds to destroy absolutely everything around it, including smashing cinder block walls. All the videos I can find on the Internet show hydrostatic failures, pull test failures, restraints actually working, or the gas being shut off immediately after failure (which wouldn't happen in a real failure.)
Has anyone else seen this video or know where I
might be able to get it? Or something similar? Thanks!!





RE: High pressure flex hose failure videos?
What is the industry standard to which you refer?
Ted
RE: High pressure flex hose failure videos?
http://www.whipsock.com/details-specs
Ted
RE: High pressure flex hose failure videos?
I do know the Navy has some strict standards working with their steam systems - maybe you can find something there... Just a thought.
OR call a MFG of 6,000 psi hoses - pick up the the that heavy phone and call...
RE: High pressure flex hose failure videos?
Good luck,
Latexman
RE: High pressure flex hose failure videos?
RE: High pressure flex hose failure videos?
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Now I work in the industrial gas industry, and the same 'industry standard' applies, but I can't say where it might be written. If I look at any hoses over about 100 psi, I would expect to find hose restraints on either end. You might try CGA codes. I think you're right in insisting on the hose restraints. That situation would scare me too.
RE: High pressure flex hose failure videos?
The key is in how the braid is welded to the corrugated section of the hose. It all gets back to the adage that 'a chain is only as strong as its weakest link.'
Maybe you should review your hose specs for the applications in question. We regularly use them in applications in the multiple of thousands of PSI without any other restraint than the braid.
rmw