Re: [MW:5106] Corrosion Allowance for Tank Design as per BS14015:2004

Dear Mr. Hrishi,

Thanks for your reply. But this comments was given by engineering consultant. Not by client.

Client was not specified anything in their tender document. As of us we have considered min thick for shell, bottom and roof plate. If we should consider CA means what will be the minimum? that is confusing us.

Regards,
Vijay.

On Fri, May 7, 2010 at 5:24 AM, <hrishikm07@gmail.com> wrote:

Dear vi jay

Your client is right. You should have ensured client specification before starting the design exercise. There should be a minimum CA considered in the design which will not impart any strength.
Refer cl 5.3.2 of API 650 (guess API is your design code)

Hrishi
Sent on my BlackBerry® from Vodafone Essar
From: Vijay <k.vijayaraj@gmail.com>
Date: Thu, 6 May 2010 20:44:24 +0400
To: <materials-welding@googlegroups.com>
Subject: [MW:5095] Corrosion Allowance for Tank Design as per BS14015:2004

Dear All,

Please clarify me the below.

We designed a Tank and send for approval to the client. As per the code there is nothing mentioned about corrosion allowance. As per the tender spec. there is nothing mentioned about corrosion allowance. We got this below reply from engineer.

It is normal practice to provide 3 mm corrosion allowance on shell & base and 1.5 mm for roof material. The requirement is usually from Clients project specifications.

In the present case there is no concern related to Shell as provided thickness is more than actual required thickness plus corrosion allowance. But for the base and roof material no corrosion allowance is available / considered.

As we do not know, if, there are any company project specifications to be followed,

Based on confirmation we will proceed to review and comment the drawing..

Kindly help Us.

Regards,
Vijay.
Advanced Oilfield Technology Company LLC,
Muscat.

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