Question:
Does one say the full nusach of the Kaddish for a siyum, on Shabbos or on a day one does not say Tachanun?
Answer:
The kaddish said by a siyum is not a sad kaddish, but an oppourtunity to sanctify H-shem’s name in public, and it is not said as something sad, therefore it can be said even on happy days.
Best Wishes
