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Re: [MW:23748] Impact Test Requirement for Welds of API-650 Storage Tank when Design Metal Temperature is below -7°C

By Materials & Welding
Dear

ASME SECIX is only a qualification code.Impact test requirements is out of the scope of SECIX.It is design code or client specification which specify impact test requirements as per service conditions.

Regards,
Mohammed Azharuddin

--------------------------------------------
On Sun, 18/10/15, Vanchinath S.A. <vanchinaths@gmail.com> wrote:

Subject: Re: [MW:23739] Impact Test Requirement for Welds of API-650 Storage Tank when Design Metal Temperature is below -7°C
To: materials-welding@googlegroups.com
Date: Sunday, 18 October, 2015, 8:57 AM

Design code
to be followed for impact test requirements. Follow API
650.


On 17 Oct 2015 13:27,
"SA" <sarfrazengineer@gmail.com>
wrote:
Dear All,
A Fuel
Oil tank has been designed as per API-650 code and it is
mentioned in this code that when design metal temperature is
below -7°C impact test shall be carried out for all welds
for all components. The statement in code is given
as: 
"9.2.2.2
When the design metal temperature is below -7°C (20 OF),
impact tests of the weld metal shall be made for all
procedures used for welding the components listed in 4 2.10
1, for welding attachments to these components, and for
fabricating shell nozzles and manholes from pipe and
forgings listed in 4.5. 
In our case, design metal
temperature is below -7°C i.e. -10°C but still welding
engineer is insisting that impact testing is not required as
per ASME Section IX (QW-403.5).
My question is that Tank is designed
as per API-650 and there is no reference that ASME section
IX would supersede  the above statement of API-650 where
impact testing shall be carried out when Design Metal
Temperature is below -7°C.
Can anybody guide on this
subject.
Thanks in
advance



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