Re: [MW:32997] PWHT of blind flanges not having welding

I suppose except Manway, all blind flanges are temporary and it comes with a trunion attachment

Thanks & Regards

J.Gerald Jayakumar

On Monday, 28 March, 2022, 07:15:06 am GMT+4, Balakrishnan Srinivasan <sbkay333@gmail.com> wrote:

Check the MTC of the blind flange, if it fulfills the requirement of sour service/ NACE, it might have been normalized at the fabrication shop. Then no need for PWHT as of best of understanding.

Warm Regards,

Balakrishnan S

On Mon, Feb 28, 2022 at 2:20 PM Gerry Lourens <Gerry.Lourens@newage-eng.com> wrote:

No Welding thus PWHT not required

 Kind Regards

Gerry lourens

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Gerry Lourens Welding Engineer
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On Mon, Feb 28, 2022 at 10:33 AM Muhammed Ibrahim PK <ibratech@gmail.com> wrote:

Gentlemen,

Please advice PWHT required or not for small blind flanges also if the vessel is in sour service.The blinds having no welding on it.

As per my understanding PWHT is only for weld, not for base metal.

If welding on blinds like davit, manway handle can be justified. Is it required for other blinds not having any weld on it.

Experts please provide your view on it.

Reg,

Ibrahim

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