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Nilesh
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India - Member - New Member

Join Date: Aug 2008
Posts: 61
Good Answers: 1

Hoist Testing

07/22/2010 7:12 AM

We were testing the hoist designed for 5 t but at 900 kg started sliding and the load remains at the same height.

Expert opinion for the root cause is requested.

With regards,

Nilesh.
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Anonymous Poster
#1

Re: Hoist Testing

07/22/2010 7:19 AM

The hoist failed the test.
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Nilesh
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India - Member - New Member

Join Date: Aug 2008
Posts: 61
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#3
In reply to #1

Re: Hoist Testing

07/22/2010 7:29 AM

That;s true but, can you tell me possible root cause for this failure as the Hoist was Installed since last 1 year before it was tested due to no approch to the area dut o scaff hOLDING ETC...

Itwas tested in presence of Local authority.

Regards,
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#4
In reply to #3

Re: Hoist Testing

07/22/2010 7:43 AM

Something has changed since the original test was carried out. Find out what it is and fix it.

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#2

Re: Hoist Testing

07/22/2010 7:27 AM

<...Expert opinion for the root cause is requested...>

Then why not let that expert witness the test?

No-one on CR4, apart from the original poster, has seen the test!

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RDGRNR
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Engineering Fields - Instrumentation Engineering - New Member

Join Date: Dec 2009
Location: San Antonio, TX USA
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Good Answers: 29
#5

Re: Hoist Testing

07/22/2010 10:39 AM

Nor will any responsible responder offer you any advice that will lead you to avoid any safety issues involved with such a test.

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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#6

Re: Hoist Testing

07/23/2010 12:32 AM

Please describe the hoist.

If it is an electrically powered drum winch, the motor brake might be slipping, or something may be blocking the brake from engaging.

If it is a hydraulic unit, a valve might be leaking by, or a cylinder piston seal may be leaking.

Your description of "started sliding and the load remains at the same height" is inconsistent.

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Anonymous Poster (1); Nilesh (1); PWSlack (2); RDGRNR (1); Tornado (1)

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