European Union (Withdrawal) Bill

I am not familiar with the amendment which was voted down in the Commons. I believe it is perfectly possible for the UK to develop its own IAEA-accredited safeguards regime within the next few months, and I understand that a lot of work is being done on that already. I understand that Euratom’s treaties are mixed up with the EU treaties; therefore, is it not natural that, if there is an implementation period for putting into practice what comes afterward with the EU, the same will apply for Euratom?