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Re: [MW:20628] WPS as per API 650

By Materials & Welding
There are two type of stress releiving method , one is Mechanical ( Vibratory ) and another is Thermal which is nothing but PWHT

THANKS & BEST REGARDS
KG.PANDITHAN, AWS-CWI, CSWIP 3.1
CONSULTANT-WELDING & QUALITY


On Sat, Apr 19, 2014 at 8:42 AM, Marat Nurbekov <marat.nurbekov@gmail.com> wrote:

Dear Dr. Georgios Dilintas

Thank a lot for your answer but what about situation when Thermal stress relief is required? Shall PWHT been performed on PQR specimen

 

Thanks and regards

Marat Nurbekov


четверг, 17 апреля 2014 г., 15:11:34 UTC+5 пользователь George Dilintas написал:

If Thermal Stress Relief (PWHT) is not required by API 650, then you have not to perform a PWHT on your PQR specimen

    best regards

    Dr. Georgios Dilintas

    Authorized Nuclear Inspector
    Authorized Inspector Supervisor
    API 510 Inspector

    I&F REGIONAL TECHNICAL MANAGER
    BUREAU VERITAS HELLAS

    Tel: +30 210 40 63 113/4
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    (See attached file: Dilintas_George.vcf)

Inactive hide details for Marat Nurbekov ---16/04/2014 15:56:42---HI Dear Members, Could you help me? I work in project for CruMarat Nurbekov ---16/04/2014 15:56:42---HI Dear Members, Could you help me? I work in project for Crude Oil Tank. The tank shall

From: Marat Nurbekov <marat.n...@gmail.com>
To: material...@googlegroups.com
Date: 16/04/2014 15:56
Subject: [MW:20597] WPS as per API 650
Sent by: material...@googlegroups.com



HI Dear Members,
Could you help me? I work in project for Crude Oil Tank. The tank shall be constructed as per API650 and now I have some following doubts:
1) As you know WPS for API 650 has to be qualified as per ASME IX CODE and as per this code PWHT is essential variable but what about Thermal Stress Relief which is required as per API 650?
Shall I qualify WPS with Thermal Stress Relief or Thermal Stress Relief shall be performed when it is required as per API 650
2) For Crude Oil Tank shall be constructed Fire water pipe system and Drainage system. Company is going to use a plastic pipe material but there are not any notes regarding plastic materials in ASME IX and API 650.

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