WPS as per API 650

[Marat Nurbekov]

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.

[george....@gr.bureauveritas.com]

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)

Marat 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

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[Bala Murugan]

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....@gr.bureauveritas.com

<george....@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.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.
>
>
> --
> To post to this group, send email to material...@googlegroups.com

> To unsubscribe from this group, send email to materials-welding
> +unsub...@googlegroups.com

[george keribo]

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. 

[Marat Nurbekov]

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:

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[pgoswami]

Hi Murat,

 

Already there had been many correspondences on this issue. To clarify your query as per API-650, thermal stress relief and PWHT is the same (please see below the appropriate clause.).

 

Firewater piping and associated components must meet NFPA guidelines. As plastic  is a low melting materials, the use must be done with caution. Use the attachment with with highlights.

 

Hope this would be of help.

 

Thanks.

 

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Specialist

Ontario, Canada

pgos...@quickclic.net

pradip....@gmail.com

pradip_...@yahoo.ca

 

5.7.3 Spacing of Welds around Connections

See Figure 5-6 for spacing requirements listed in 5.7.3.1 through 5.7.3.4.

Note 1: Additional weld spacing requirements exist in this Standard. Other paragraphs and tables dealing with nozzles and manholes may

increase the minimum spacing.

Note 2: Whenever stress relief or thermal stress relief is used in this Standard, it shall mean post-weld heat treatment.

 

---

From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Marat Nurbekov
Sent: Wednesday, April 16, 2014 8:09 AM
To: material...@googlegroups.com

Subject: [MW:20597] WPS as per API 650

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[Marat Nurbekov]

Dear Pradip,
Thank you a lot for your answer. Now Everything is clear.

 

Regards Marat Nurbekov

суббота, 19 апреля 2014 г., 20:50:39 UTC+5 пользователь pgoswami написал:

[kannayeram gnanapandithan]

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

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[george....@gr.bureauveritas.com]

Dear Marat

if you have to perform stress relief  to comply with the requirements of API 650 - 5.7.4, then you have to perform 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)

Marat Nurbekov ---19/04/2014 14:08:41---Dear Dr. Georgios Dilintas Thank a lot for your answer but what about situation when Thermal stress

From: Marat Nurbekov <marat.n...@gmail.com>
To: material...@googlegroups.com
Date: 19/04/2014 14:08
Subject: Re: [MW:20623] WPS as per API 650
Sent by: material...@googlegroups.com

---

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
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
(See attached file: Dilintas_George.vcf)

Marat 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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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
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