| Hi John,
If you are fabricating the tanks with the open vents you must follow as per API 650,,7.3.7.2,which states below:
Upon completion, the roof of a tank not designed to be gas-tight, such as a tank with peripheral circulation vents or a tank with free or open vents, shall receive only visual inspection of its weld joints, unless otherwise specified by the Purchaser.
Thanks and Regards,
Thiru. --- On Mon, 27/6/11, Rajagopal Kannan <rajagopal.kannan@gmail.com> wrote:
From: Rajagopal Kannan <rajagopal.kannan@gmail.com>
Subject: Re: [MW:11488] VACUUM TEST FOR SOTRAGE TANKS ROOF AS PER API 650
To: materials-welding@googlegroups.com
Date: Monday, 27 June, 2011, 4:01 PM
Dear John, No, Roof do not require vacuum testing. If you have access to both the sides of roof, you can deploy and NDT for weld examination. Thanks and best Regards, K.Rajagopal
On Sun, Jun 26, 2011 at 10:25 AM, manoj john <manojacgnr@gmail.com> wrote: Dear All experts,
Please give me information about vacuum test of roof for storage tanks
as per API 650.
I am fabricating sotrage tanks as per API 650 with fixed roof with
open vent nozzle and designed for Atmospheric pressure.
My doubt is whether this tank roof require vacuum testing as per API 650.
Thanks and Best Regards.
John Abraham
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