I am sure that what he has told you is correct.
However, the gas regulations still say that any opening of the pipe should be by an RGI and the the pipe, although not in use should still be capped within the property.
Based on the advice given to you there would seem to be litle risk in you opening the pipe.
I cannot advise you to do that though as its contrary to the regulations!
But if you do then at least unscrew the cap first rather than just cutting with an angle grinder!
Tony
However, the gas regulations still say that any opening of the pipe should be by an RGI and the the pipe, although not in use should still be capped within the property.
Based on the advice given to you there would seem to be litle risk in you opening the pipe.
I cannot advise you to do that though as its contrary to the regulations!
But if you do then at least unscrew the cap first rather than just cutting with an angle grinder!
Tony