Sometimes when u have to do a Tie in, bolt tightening doesn't guarantee abscense of leaks because of bolted spools can´t be perfectly fitted, then some clients requieres a leak test prior to comissioning the facility.
BR
Alexis
Date: Wed, 6 Oct 2010 22:25:39 -0700
From: karthik6684@yahoo.com
Subject: Re: [MW:7409] difference between tightening test and tightness test in piping work.
To: materials-welding@googlegroups.com
Dear Mr.Dilip, As per B31.1,Section 137.1 - The tightness test is a pressure test as required by code and it shall be done after all NDE and PWHT work finished.The pressure testing of the piping systems is to ensure the leak tightness shall be acceptable for the determination of any leaks in piping sub assemblies. AS per your quiery,i understood that you are doing Initial Service test.But the Initial service test is normally specified by some customer.If your customer specify for Initial service test,please follow,ASME B31.1,Section 137.7. Thanks & Regards, (Karthik) Karthikeyan.S QA/QC Manager Getabec Energy Co.,Ltd. 379,Moo6,Soi8,Nikhomphatana, Rayong-21180, Thailand. Phone: 0066 38 897035-8 (Off) Fax: 0066 38 897034 Hand Phone: 0066 892512282 --- On Thu, 10/7/10, ctcit-an&mma-Dilip Kumar <dilipkumar@ctci.co.th> wrote:
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