Re: [MW:20678] In-Service pipe damage

We put welding metal sleeve o clock spring sleeve, you must calculated the pressure with thicknes less deep of damage, I prefer install clock spring sleeve.

Enviado desde mi BlackBerry de Movistar

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From: Saidur Rahman <saidur04cuet@gmail.com>

Sender: materials-welding@googlegroups.com

Date: Fri, 25 Apr 2014 01:15:11 +0600

To: <materials-welding@googlegroups.com>

ReplyTo: materials-welding@googlegroups.com

Subject: [MW:20664] In-Service pipe damage

Dear Experts,

During Pipeline crossing of a Cross-Country pipeline project(30" OD API 5L X-60) In-Service pipe is damaged by Excavator teeth due to bad workmanship. Damage depth upto 2 mm. (In-Service pipe OD=30"; API 5L X-52. Pipeline containing Natural gas. Pressure approximately 1000 psig. No accident happened.) It is not possible to shut down the pipeline to repair because one region of the country will not get gas because only one supply line. As a Mechanical Engineer i know this damage portion is a point of stress concentration. Anytime anything can happened. What should i do.

Regards,

Saidur

QA/QC

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