1'' Line Tapping

Gents…..

I guess someone can help me on this.

We have a 1'' line which carry HC gas
Material - Carbon Steel
Pressure - < 1 bar

We want to take a tapping point from this line. We cut the line using cold cutting. There is no immediate isolation point available near the tapping point.

I heard about some balloon type plug that can be fitted inside the pipe to get a positive isolation

My question is
1. Is it possible to do this on a 1'' line
2. What is the product name and the procedure to do this
3. Vendor details, if any.

Thank you in advance,

Regards,


Sabir