Question: Replace or repair?

[duazo2009]

Please help me by providing your opinion on the following issue:

While cutting a replaceable pipe inside furnace, a cut mark by gas cutting tool is found on adjacent good pipe. A cut mark of 3 mm depth and 6 mm diameter is created on a 3 inch (originally 5.49 mm thickness) A335 Gr. P5 pipe. Should I replace the pipe or locally repair the mark by welding. It is mentionable that overall thickness of the pipe is satisfactory.

Sumon,

Since it is replaceable, change it with a new one. don't put yourself in a situation wherein the service life of your furnace as well as the lives of innocent would be in a jeopardy.

Cheers,

duazo2009