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rajasekar_be Active Contributor Join Date: May 2009 Location: India Posts: 19	Atmospheric Tank 02/20/2014 12:31 PM
	Hi, I have one query regarding the atmospheric vessel (horizontal cylindrical) design pressure to calculate the shell/dish end plate thickness by ASME Sec VIII Div 1. The vessel internal design pressure will be considered as full of liquid if the client not specified any internal design pressure. And the vessel has opened to atmosphere (vent nozzle considered in all the vessels). But, I received one comment from one of our client saying that the internal design pressure shall be consider in the calculation is 1bar + Full of liquid. Is it correct or please clarify me.
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Tornado Guru Join Date: May 2009 Location: Richland, WA, USA Posts: 21017 Good Answers: 795	#1 Re: Atmospheric Tank 02/20/2014 1:17 PM
	The client is incorrect. This isn't an ASME Sec VIII Div 1 pressure vessel, anyway. __________________ In vino veritas; in cervisia carmen; in aqua E. coli.
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SolarEagle Guru Join Date: Mar 2007 Location: by the beach in Florida Posts: 33392 Good Answers: 1817	#2 Re: Atmospheric Tank 02/20/2014 1:44 PM
	1bar is vented tank....atmospheric pressure unmolested.... __________________ All living things seek to control their own destiny....this is the purpose of life
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#3 Re: Atmospheric Tank 02/20/2014 2:01 PM
	Do your clients know how you get answers to their technical questions? And technical guidance to perform your job?
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varunpassi Commentator Join Date: Jun 2009 Location: Chennai (India) Posts: 92 Good Answers: 2	#4 Re: Atmospheric Tank 02/21/2014 2:31 AM
	There are 2 things to be noted. ASME SEC VIII Div 1 is for pressure vessel. You generally do not design atmospheric tanks using SEC VIII. The code for those (atmospheric tank) is API 650 for vertical cyclindrical tanks for Oil, AWWA D100 for Water and API 620 for Low Pressure tanks. And yes for atmospheric tanks, there are instances where the design of tank shall be considering pressure of atmosphere + the maximum liquid level in tank. They shall also be checked for vacuum conditions. __________________ Varun Passi
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#5 Re: Atmospheric Tank 02/21/2014 8:54 AM
	Don't do this: Railroad tank car vacuum implosion - YouTube
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Codemaster Guru Join Date: Jul 2005 Location: Stoke-on-Trent, UK Posts: 4496 Good Answers: 137	#6 Re: Atmospheric Tank 02/21/2014 9:41 AM
	1 bar gauge or 1 bar absolute? __________________ Give masochists a fair crack of the whip
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Users who posted comments:

Codemaster (1); lyn (2); SolarEagle (1); Tornado (1); varunpassi (1)

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