Hydro Test & NET(NDE) of SA-106 (SA106) (ASME)

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ChangAn Kwon Member Join Date: Jan 2013 Posts: 7	Hydro Test & NET(NDE) of SA-106 (SA106) (ASME) 01/17/2013 5:38 AM
	Hello every good engineer. I have some question about purchasing SA-106 pipe. I'd like to know if hydro test for SA-106 pipe is certainly requried or not. I think NDE(NDT) is allowable instead of hydro test according to ASME Section.II. Plus, NDE(NDT) is allowed. if owner's specification is not mention about that hydro test of C.s pipe is necessary. Please answer my question and give your advice. Thanks.
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MJCronin Power-User Join Date: Oct 2009 Location: Central Midwest Posts: 455 Good Answers: 38	#1 Re: Hydro Test & NET(NDE) of SA-106 (SA106) (ASME) 01/17/2013 11:45 AM
	Chang.... A pressure test of a completed piping system is usually required by your piping code of constuction ( I assume here you are constructing a piping system) Are you using the SA106 for the construction of a piping system ora pressure vessel. ? What is your code of construction ? __________________ We have met the enemy....and he is us. POGO
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ChangAn Kwon Member Join Date: Jan 2013 Posts: 7	#2 In reply to #1 Re: Hydro Test & NET(NDE) of SA-106 (SA106) (ASME) 01/17/2013 6:21 PM
	Thank your for reply. I am designing the scetion.VIII pressure vessel and I woder whether Hydro test is necessary or not when I purchase a SA106. Thanks. ChangAn Kwon.
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bigg Guru Join Date: Jun 2010 Posts: 1296 Good Answers: 104	#3 In reply to #2 Re: Hydro Test & NET(NDE) of SA-106 (SA106) (ASME) 01/17/2013 7:00 PM
	The completed vessel will be hydrotested, so if this is part of the containment envelope it will be tested also. There are only 2 cases that I can think of that would require a mill hydro test: 1.The vessel's design is such that the cost to repair/replace this pipe in the minuscule probability that it fails final hydrotest would be so high as to justify the cost to test it individually before vessel fabrication. (You could perform this in-house instead of requiring the supplier to do it.) 2. If your customer requires it.
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ChangAn Kwon Member Join Date: Jan 2013 Posts: 7	#4 In reply to #3 Re: Hydro Test & NET(NDE) of SA-106 (SA106) (ASME) 01/17/2013 7:49 PM
	Thanks bigg. Your advice upgrade me.
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daniel leduc Member Join Date: Jan 2013 Posts: 5	#5 Re: Hydro Test & NET(NDE) of SA-106 (SA106) (ASME) 01/18/2013 12:31 PM
	The mill test certificat is a document that certify that the material you purchase comply with SA-106 and i would ask for it if i had to inspect a pressur vessel that was fabricated, repair or alter with that material.
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