----- Original Message -----
From: Ahmed Elias
To: materials-welding@googlegroups.com
Sent: Mon, 14 Mar 2011 18:00:57 +0530 (IST)
Subject: Re: [MW:10335] Existing Tank
to check the strength of shell to bottom plate
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On Sun, Mar 13, 2011 at 6:01 PM, akshat agrawal <agrawalakshat@indiatimes.com> wrote:
what if complete bottom plate welds are vacuum box tested using soap solution?? in that case, what is the purpose of hydrotest??
Regards,
Akshat Agrawal
----- Original Message -----
From: K.Babu
To: materials-welding@googlegroups.com
Cc: srinu p
Sent: Sat, 12 Mar 2011 19:56:27 +0530 (IST)
Subject: Re: [MW:10296] Existing Tank
Hi
As per API 653 Cl 12.3 , you need to do Hydrotest,
Since replacing the bottom plate considered as an major repair you have to do hydrotest
On Fri, Mar 11, 2011 at 8:29 PM, srinu p <sree.dream6@gmail.com> wrote:
Dear All,
We have two existing tanks ( 20 years old) 3 mtrs height and 5.7 mtrs dia.. Bottom plate thickness - 8 mm.
As per client requirement we have shift the tanks to another place and also they want to change the Bottom plate.
1. As per API standard or any other standards, if we change the bottom plate, which type tests are required for bottom plate inspection. My opinion is Vaccum Box and DPI or MPI tests are enough? or Any other tests are required?
2.And also if we are using same bottom plate UT thickness guage checking and VB, DPI/MPI tests are enough? Is it acceptable?
Please share your experience.
regards,
P.Srinu
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Thanks & regards,
K.Babu
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AHMED MUHAMMAD ELIAS
MECHANICAL ENGINEER
MECHANICAL ENGINEER
ASNT LEVEL II NDT INSPECTOR
IRAQ :-+9647710951885,+9647503136603
PLEAS FEEL FREE TO CONTACT ME FOR ANY INQUIRY
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