The passport will be needed for travel outside the European Union
The passport can be valid for 1 year
If you want a passport valid vor 5 years it will cost you around 70 euro
Belgian citizens can obtain a passport at the 'Gemeente'
In Belgium an identity card (with photo) is obligatory
Belgium, Luxemburg and Liechtenstein were the first western european countries who were forced to have machine readable passports if their citizens want to enter the USA. Clearly the USA doesn't trust the Belgian passport administration. Well, the man who killed an allied leader of the opposition in Afganistan, travelled there with a Belgian passport.
USA - Dubai