Tuesday, January 1, 2019

[MW:28836] Re: Hot tap wps

it is a flow rate that you mentioned in WPS.

qualified PQR with severe condition where cooling rate is high and chances of burn through is high.
that's meaning.

On Thursday, October 18, 2018 at 2:51:21 PM UTC+3, puneeta...@gmail.com wrote:
Dear Experts,

We are actually in the process of making WPS for Hot Tapping . in this context while referring to API 1104 , unable to interpret the below paragraph from API 1104 In Service welding .

Kindly help in understanding

B.2.3.1.2 Pipeline Operating Conditions


For in-service welds, an increase in the severity of the pipeline operating conditions (in terms of weld cooling rates)
above the group qualified constitutes an essential variable.

Thanks in advance

Regards,

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