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EHAB SALAMA
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Join Date: Sep 2011
Posts: 2

LEL Accaptable Range in Storage Tanks

09/06/2011 7:20 AM

Dear Sir

I have problem for our storage tanks, because it's rim seal has some damage parts,but

during measure LEL, I didn't know it that range in accptablerange or in risk

Ehab Salama

Inspection Engineer
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Pathfinder Tags: LEL %
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
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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#1

Re: LEL Accaptable Range in Storage Tanks

09/06/2011 8:06 AM

If LEL means "Lower Explosive Limit", then obviously the atmosphere has to be below it for safety. However, that doesn't mean that it is safe to enter the tank or to do any work on it. The forum needs much more information to be able to advise and, frankly, the sorts of procedures needed to carry out repairs to tanks are best determined locally. At this moment, for example, the forum doesn't know anything about these tanks nor what they contain!

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EHAB SALAMA
Participant

Join Date: Sep 2011
Posts: 2
#2
In reply to #1

Re: LEL Accaptable Range in Storage Tanks

09/07/2011 1:57 AM

Dear Sir

Actually, the problem that we notice some damage in rim seal, so for replacement this seal HSE , has been checked about any gas emission by using LEL % and as per his advice some times we have high rate of LEL and some times low so I don't know what is criteria.
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