I think at least in FAA land, it's known as an "diverse departure assessment" - see the link below, usually in EASA (UK CAA?) land the rules follow in fairly similar format even if the naming etc. is different;
https://www.faa.gov/regulations_poli..._Chapter_1.pdf
Last edited by First.officer; 13th Nov 2021 at 09:11.
Reason: typo