in gas pipe line is running, and leakage is take place, if possible with out st

in gas pipe line is running, and leakage is take place,
if possible with out stop the gas is welding ?
how ?

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in gas pipe line is running, and leakage is take place, if possible with out stop the gas is weldin..

the gas flowing in the pipe line is inflammable and do not
take fast reactions to heat generated by the welding process.

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