> Gents,
>
> Pad plate for pipe support has been welded with tank shell before hydrotest.
> After hydrotest we have done fitup of pipe support on the pad plate which
> was already welded with shell.
> To avoid distortion during the welding 2 stiffner support provided both
> sides of the pipe support and welded less than 1'' tack weld with the low
> hydrogen electrode|(E-7018).
>
> Please see the attached figure for your referrence.
>
>
>
> 2011/5/2 Jorge Mejía Lema <jmejialema@gmail.com>
>
>> Please read the following para gphs API 650 , Eleven Edition:*
>>
>> 7.2.1.11
>> *Non-structural small attachments such as insulation clips, studs and pins
>> but not insulation support rings or bars may
>>
>> be welded by the arc stud, capacitor discharge or shielded metal arc
>> process to the exterior of the shell including reinforcing plates
>>
>> or PWHT assemblies and roof either before or after hydrostatic testing is
>> performed, but before the tank will be filled with product
>>
>> provided:
>>
>> a. The attachment locations meet the spacing requirements of 5.8.1.2a.
>>
>> b. The arc stud welding process is limited to 10 mm (
>> 3/8 in.) maximum diameter studs or equivalent cross-section.
>>
>> c. The maximum shielded metal arc electrode is limited to 3 mm (
>> 1/8 in.) diameter and shall be a low-hydrogen type.
>>
>> d. The attachment welds, except for those made by the capacitor discharge
>> method, shall be inspected per 7.2.3.5. The attachment
>>
>> welds made by the capacitor discharge method shall be visually examined
>> for
>> all types and groups of shell materials.
>>
>> e. All stud welding and capacitor discharge procedures have been qualified
>> in accordance with ASME Section IX. Capacitor discharge
>>
>> procedures do not require procedure qualification provided the power
>> output
>> is 125 watt-sec or less.
>>
>> The shielded metal arc weld procedures shall meet the requirements of
>> Section 9 for qualification for use.
>> *
>>
>> 7.3.6 Hydrostatic Testing Requirements
>>
>> 7.3.6.1
>> *This hydrostatic test of the tank shall be conducted before permanent
>> external piping is connected to the tank. Attachments
>>
>> to the shell defined in 5.8.1.1, located at least 1 m (3 ft) above the
>> water level, and roof appurtenances may be welded during the filling
>>
>> of the tank. After completion of the hydro-test, only non-structural small
>> attachments may be welded to the tank in accordance
>>
>> with 7.2.1.11. Any welded joints above the test-water level shall be
>> examined for leakage by one of the following methods:
>> Regards,
>> Jorge Mejía, Colombia, South America
>>
>> 2011/5/1 <rosli@labuanship.com>
>>
>>> Dhana,
>>>
>>> You need to redo the HT if the welding of temporary support attached to
>>> pressure part, refer to your tank construction code. Thanks
>>>
>>> Regards
>>> RM
>>>
>>> Sent by Maxis from my BlackBerry® smartphone
>>> ------------------------------
>>> *From: *SOHAIB GHNAIMAT <sohaib_cegco@yahoo.com>
>>> *Sender: *materials-welding@googlegroups.com
>>> *Date: *Sun, 1 May 2011 10:16:21 -0700 (PDT)
>>> *To: *<materials-welding@googlegroups.com>
>>> *ReplyTo: *materials-welding@googlegroups.com
>>> *Subject: *Re: [MW:10909] Hydrotest-API 650
>>>
>>> Re-Hydro test should be done.
>>>
>>> Regards,
>>>
>>> Sohaib
>>>
>>> ------------------------------
>>> *From:* DHANASEKARAN SUBRAMANIAM <subramaniamdhanasekaran7@gmail.com>
>>> *To:* materials-welding@googlegroups.com
>>> *Sent:* Sun, May 1, 2011 8:40:39 AM
>>> *Subject:* [MW:10902] Hydrotest-API 650
>>>
>>> Gents,
>>> After the completion of a tank hydro test, some temporary attachment
>>> welding has been made on the shell and roof plates.
>>> What action needs to be taken at this stage, kindly provide the action
>>> plan with code references.
>>>
>>>
>>> Your Immediate response is highly appreciated.
>>>
>>>
>>>
>>>
>>> --
>>> *WITH REGARDS*,
>>> *DHANASEKARAN .S ,*
>>> *Mob.no <http://mob.no/>: +96893220429.
>>> *
>>>
>>> --
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>>
>>
>>
>> <http://www.chiefsmilies.com/wp/ie.php?plg=ie&subs=gmail&elm=sign>
>>
>> --
>> To post to this group, send email to materials-welding@googlegroups.com
>> To unsubscribe from this group, send email to
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>> For more options, visit this group's bolg at
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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.
>>
>
>
>
> --
> *WITH REGARDS*,
> *DHANASEKARAN .S ,*
> *Mob.no: +96893220429.
> *
>
> --
> To post to this group, send email to materials-welding@googlegroups.com
> To unsubscribe from this group, send email to
> materials-welding+unsubscribe@googlegroups.com
> For more options, visit this group's bolg at
> http://materials-welding.blogspot.com/
> 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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To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
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