Re: [MW:24628] Lethal service requirement

Lethal service=high risk

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From: Kannayeram Gnanapandithan Sent: Κυριακή, 3 Απριλίου 2016 - 08:44 To: materials-welding Reply To: materials-welding@googlegroups.com Subject: Re: [MW:24622] Lethal service requirement

why do want PWHT for 8mm thick??

THANKS & BEST REGARDS,

KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

On Sat, Apr 2, 2016 at 4:41 PM, Vijay Patre <vijay.patre09@gmail.com> wrote:

Dear Sachin,
Check your project specification & process data sheet requirements.

Technically you can perform perform PWHT.

Regards,
Vijay Patre

On Apr 2, 2016 1:01 PM, "sachin sankhe" <sachin.sankhe@rediffmail.com> wrote:

Dear Friends,

Need your opinion on below

Equipment

Columns

Design Code

ASME SEC VIII Div.1

Process 

High Wet H2S service(NACE)

Wet Amine service

Very Toxic

Lethal(ASME SEC VIII, UW-2)

Metallurgy/Thk

Base Metal MOC=SA516 Gr.70

Thk=8mm

Clad MOC=SS316L

Clad thk=3mm

Problem

Is PWHT mandatory for clad vessel for above process condition?

For lethal service is PWHT not mandatory for clad vessel as per Table UCS56.1 Note (e)

Regards

Sachin Sankhe

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