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Re: [MW:32428] Regarding Impact testing for pipe supports.

By Materials & Welding

According to ASME B31.3, permanent support material shall be suitable for service as per below snap shot.

Inline image

It depends on the number of Supports installed to have a thorough check, if it is few in Number Then you can perform a PMI or chemical analysis by collecting chippings on the support material and check for Nickel.

S275JR do not contain Nickel whereas A333 Gr,6 contains max 0.4% Nickel.

Another method is metallography but it is expensive as you need to hire an external consultant.

WEld is not a problem as you have welded using E8018C3 (with 0.8 - 1.2 % Nickel) suitable for the service.

Thanks & Regards

J.Gerald Jayakumar




On Wednesday, 23 June, 2021, 10:42:54 am IST, mohit aggarwal <aggarwalmoh@gmail.com> wrote:


Hi Experts, 

Hope you are doing well!

We have one problem arises on construction site of material mix-up without any physical traceability i.e. In LTCS line some pipe supports welded of CS material SPS-F-8001 or Structural Material S275 JR but welding done with LTCS 8018-C3 consumable.

Line service is Pressurized LPG with MDMT -45 deg C. material of pipe-SA333 Gr6.

My query is how this can be sort out as client raise the objection of traceability.

Regards
Mohit Aggarwal.


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