If the tank ur building don't require PWHT or Thermal Stress Relieve as its been named in API 650 then u don't need to requalify ur wps but also remember, PWHT is required on the the clean out flush out door irrespective of the metal group and the assembly to be done separately. Group I,II,III metals do not need PWHT but the Clean-out-flush out door need to be thermal stress relieve so it can be done separately. Yet the WPS don't need requalification I suppose.
On Thu, Apr 17, 2014 at 6:04 PM, Bala Murugan <balamuruganqaqc@gmail.com> wrote:
Dear Marat,
If your job not required any PWHT then you no need to qualify your wps
with PWHT.As i worked with API 650 Iam very much confident about it.
And API 650 deals only with carbon plated oil tanks not plastics.
Thanks,
BALAMURUGAN M,
L&T,
INDIA,
PH +91 8763569606
On 4/17/14, george.dilintas@gr.bureauveritas.com
<george.dilintas@gr.bureauveritas.com> wrote:
>
> 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
> Fax: +30 210 40 63 118
> Cell: +30 69 44 64 62 04
> (See attached file: Dilintas_George.vcf)
>
>
>
> From: Marat Nurbekov <marat.nurbekov@gmail.com>
> To: materials-welding@googlegroups.com
> Date: 16/04/2014 15:56
> Subject: [MW:20597] WPS as per API 650
> Sent by: materials-welding@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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